JP7618025B2 - Tobacco sheet for non-combustion heating type flavor inhaler, non-combustion heating type flavor inhaler, and non-combustion heating type flavor inhaler system - Google Patents

Description

The present invention relates to a tobacco sheet for a non-combustion heating type flavor inhaler, a non-combustion heating type flavor inhaler, and a non-combustion heating type flavor inhalation system.

In a combustion type flavor inhaler (cigarette), a tobacco filler containing tobacco leaves is burned to obtain flavor. As an alternative to the combustion type flavor inhaler, a non-combustion heating type flavor inhaler has been proposed, which obtains flavor by heating a flavor source such as a tobacco sheet instead of burning it. The heating temperature of the non-combustion heating type flavor inhaler is lower than the combustion temperature of the combustion type flavor inhaler, for example, about 400°C or less. Since the heating temperature of the non-combustion heating type flavor inhaler is thus low, in order to increase the amount of smoke, an aerosol generating agent can be added to the flavor source in the non-combustion heating type flavor inhaler. The aerosol generating agent is vaporized by heating to generate an aerosol. The aerosol is supplied to the user together with flavor components such as tobacco components, so that the user can obtain a sufficient flavor.

A non-combustion heating type flavor inhaler may include, for example, a tobacco-containing segment filled with a tobacco sheet or the like, a cooling segment, and a filter segment. The axial length of the tobacco-containing segment of a non-combustion heating type flavor inhaler is shorter than the axial length of the tobacco-containing segment of a normal combustion type flavor inhaler in relation to the heater. Therefore, in a non-combustion heating type flavor inhaler, a large amount of tobacco sheet or the like is filled in a short section of the tobacco-containing segment in order to ensure the amount of aerosol generated during heating. In order to fill a large amount of tobacco sheet or the like in a short section, a tobacco sheet with low expansion bulk, i.e., high density, is usually used in a non-combustion heating type flavor inhaler. Note that expansion bulk is a value indicating the volume when a predetermined mass of tobacco sheet shreds is compressed at a constant pressure for a certain time. For example, Patent Documents 1 and 2 disclose tobacco sheets used in non-combustion heating type flavor inhalers.

Patent No. 5969923 International Publication No. 2020/058814

However, the inventors have found that when considering the heating method, the heating capacity of the heater, and the generation of aerosol, the use of a tobacco sheet with low bulk (high density) increases the total heat capacity of the tobacco-containing segment, and therefore, depending on the heating method and the capacity of the heater, the tobacco sheet filled in the tobacco-containing segment does not contribute sufficiently to aerosol generation. In order to solve this problem, it is conceivable to reduce the total heat capacity of the tobacco-containing segment.

The inventors have considered (1) reducing the specific heat of the tobacco raw material contained in the tobacco sheet, and (2) using a tobacco sheet with high expansion volume (low density) in order to reduce the total heat capacity of the tobacco-containing segment. However, since it is difficult to reduce the specific heat of the tobacco raw material itself in (1), it was considered effective to reduce the total heat capacity of the tobacco-containing segment by (2). Therefore, it is desirable to develop a tobacco sheet with high expansion volume (low density) that is suitable for use in a non-combustion heating type flavor inhaler.

The present invention aims to provide a highly expandable tobacco sheet for a non-combustion heating type flavor inhaler, a non-combustion heating type flavor inhaler containing the tobacco sheet, and a non-combustion heating type flavor inhalation system.

The present invention includes the following embodiments:

[1] A tobacco sheet for a non-combustion heating type flavor inhaler, comprising tobacco powder having a cumulative 90% particle size (D90) of 200 μm or more in a volume-based particle size distribution measured by a dry laser diffraction method.

[2] A tobacco sheet for a non-combustion heating type flavor inhaler described in [1], wherein the tobacco powder is at least one tobacco raw material selected from the group consisting of leaf tobacco, midrib and stem residue.

[3] A tobacco sheet for a non-combustion heating type flavor inhaler described in [1] or [2], wherein the proportion of the tobacco powder contained in 100% by mass of the tobacco sheet is 45 to 95% by mass.

[4] A tobacco sheet for a non-combustion heating type flavor inhaler described in any of [1] to [3], wherein the tobacco sheet further contains an aerosol generating agent.

[5] A tobacco sheet for a non-combustion heating type flavor inhaler described in [4], wherein the aerosol generating agent is at least one selected from the group consisting of glycerin, propylene glycol and 1,3-butanediol.

[6] A tobacco sheet for a non-combustion heating type flavor inhaler described in [4] or [5], wherein the proportion of the aerosol generating agent contained in 100% by mass of the tobacco sheet is 4 to 50% by mass.

[7] A tobacco sheet for a non-combustion heating type flavor inhaler described in any of [1] to [6], wherein the tobacco sheet further contains a molding agent.

[8] A tobacco sheet for a non-combustion heating type flavor inhaler described in [7], wherein the molding agent is at least one selected from the group consisting of polysaccharides, proteins and synthetic polymers.

[9] A tobacco sheet for a non-combustion heating type flavor inhaler described in [7] or [8], wherein the proportion of the molding agent contained in 100% by mass of the tobacco sheet is 0.1 to 15% by mass.

[10] A non-combustion heating type flavor inhaler having a tobacco-containing segment including a tobacco sheet for a non-combustion heating type flavor inhaler described in any one of [1] to [9].

[11] The non-combustion heating type flavor inhaler further includes a mouthpiece segment,
The tobacco-containing segment includes a first segment including an aerosol generating agent, and a second segment including the tobacco sheet for a non-combustion heating-type flavor inhaler,
The non-combustion heating type flavor inhaler according to [10], wherein the mouthpiece segment includes a cooling segment and a filter segment.

[12] A non-combustion heating type flavor inhaler described in [11], wherein the first segment includes a cylindrical wrapper and a nonwoven fabric composed of plant fibers filled inside the wrapper, and the nonwoven fabric contains the aerosol generating agent.

[13] The non-combustion heating type flavor inhaler is rod-shaped and further includes a mouthpiece segment;
the mouthpiece segment comprises a filter segment having a filter medium;
The non-combustion heating type flavor inhaler according to [10], wherein the filter medium is made of fibers having a Y-shaped circumferential cross section and a single fiber denier of 8 or more and 12 or less.

[14] The non-combustion heating type flavor inhaler according to [13], wherein the density of the filter material is 0.09 g/ ^cm3 or more and 0.14 g/cm3 ^or less.

[15] The non-combustion heating type flavor inhaler,
an abutment member adjacent the tobacco-containing segment;
a wrapping material that wraps the tobacco-containing segment, or a wrapping material that wraps the tobacco-containing segment and the adjacent member;
Further equipped with
The wrapping material has a high heat transfer portion having a higher heat transfer property than the wound member in contact therewith,
The non-combustion heating type flavor inhaler according to [10], wherein the high heat transfer portion wraps around the vicinity of the downstream end of the tobacco-containing segment.

[16] A non-combustion heating type flavor inhaler described in [15], wherein the high heat transfer portion wraps around from near the downstream end of the tobacco-containing segment to near the upstream end of the adjacent member.

[17] A non-combustion heating type flavor inhaler according to any one of [10] to [16],
a heating device for heating the tobacco-containing segment;
A non-combustion heating type flavor inhalation system comprising:

According to the present invention, it is possible to provide a highly expandable tobacco sheet for a non-combustion heating type flavor inhaler, a non-combustion heating type flavor inhaler including the tobacco sheet, and a non-combustion heating type flavor inhalation system.

FIG. 2 is a cross-sectional view showing an example of a non-combustion heating type flavor inhaler according to the present embodiment. FIG. 1 is a cross-sectional view showing an example of a non-combustion heating type flavor inhalation system according to the present embodiment, in which (a) a state before a non-combustion heating type flavor inhaler is inserted into a heating device, and (b) a state in which the non-combustion heating type flavor inhaler is inserted into the heating device and heated. FIG. 2 is a schematic diagram showing an example of a non-combustion heating type flavor inhaler according to the present embodiment. 5A to 5C are schematic diagrams showing an example of a method for forming a first segment according to the embodiment. 4A to 4C are schematic diagrams showing an example of a method for bonding the wrapper of the first segment according to the present embodiment. FIG. 4 is a schematic diagram showing another embodiment of the tobacco-containing segment according to the present embodiment. 1 is a schematic diagram showing an example of a non-combustion heating type flavor inhalation system according to an embodiment of the present invention. 10 is a schematic diagram showing another example of the configuration of a heater in the non-combustion heating type flavor inhalation system according to the present embodiment. FIG. 1 is a schematic diagram of a non-combustion heating type flavor inhaler according to an embodiment of the present invention. 1 is a schematic diagram of a non-combustion heating type flavor inhalation system according to an embodiment of the present invention. 1 is a schematic diagram of a non-combustion heating type flavor inhalation system according to an embodiment of the present invention. FIG. 13 is a diagram for explaining the end portion on the suction end side of the region where the cooling segment and the heating device contact each other. FIG. 13 is a diagram for explaining the end portion on the suction end side of the region where the cooling segment and the heating device contact each other. 1 is a graph showing the delivery amounts of nicotine and glycerin in a reference example. 1 is a graph showing the delivery amounts of nicotine and glycerin in a reference example. 1 is a graph showing the delivery amounts of nicotine and glycerin in a reference example. 1 is a graph showing the delivery amounts of nicotine and glycerin in a reference example. FIG. 1 is a diagram showing an embodiment of a non-combustion heating type flavor inhaler. FIG. 1 is a diagram showing one embodiment of a non-combustion heating type flavor inhalation system. FIG. 13 is a diagram showing another embodiment of a non-combustion heating type flavor inhaler. FIG. 13 is a diagram showing another embodiment of a non-combustion heating type flavor inhaler. FIG. 13 is a diagram showing another embodiment of a non-combustion heating type flavor inhaler. FIG. 13 is a diagram showing a model for calculating heat transfer characteristics. FIG. 1 is a diagram showing an outline of a bending test. FIG. 13 is a diagram showing the amount of smoke produced by a non-combustion heating type flavor inhaler. FIG. 13 is a diagram showing the correlation between smoke volume and sensory evaluation in an automatic smoking system.

[Tobacco sheet for non-combustion heating type flavor inhaler]
The tobacco sheet for a non-combustion heating-type flavor inhaler according to this embodiment (hereinafter also referred to as "tobacco sheet") contains tobacco powder having a cumulative 90% particle size (D90) of 200 μm or more in a volume-based particle size distribution measured by a dry laser diffraction method.

In the tobacco sheet according to this embodiment, the D90 of the tobacco powder measured by dry laser diffraction is 200 μm or more, so that the voids between the tobacco powder in the tobacco sheet are large, and it is presumed that the voids contribute to improving the expansion and bulk of the tobacco sheet. In addition, it is preferable that the tobacco sheet according to this embodiment further contains an aerosol generating agent and a molding agent, and by setting the blending ratio of these within a predetermined range, the expansion and bulk of the tobacco sheet is further improved.

(Tobacco powder)
Examples of the tobacco powder contained in the tobacco sheet according to this embodiment include leaf tobacco, midrib, and stem residue. These may be used alone or in combination of two or more. These can be cut into a predetermined size to be used as tobacco powder. The size of the tobacco powder is such that the cumulative 90% particle size (D90) in the volume-based particle size distribution measured by dry laser diffraction method is 200 μm or more, preferably 350 μm or more, and more preferably 500 μm or more. The upper limit of the range of the D90 is not particularly limited, but can be, for example, 2000 μm or less.

In terms of the size of the tobacco powder, from the viewpoint of further improving the swelling bulk of the tobacco sheet, the cumulative 50% particle diameter (D50) in the volume-based particle size distribution measured by dry laser diffraction is preferably 40 μm or more, more preferably 100 μm or more, and even more preferably 200 μm or more. The upper limit of the range of D50 is not particularly limited, but can be, for example, 1000 μm or less. In this embodiment, the measurement of D90 and D50 by dry laser diffraction method can be performed using, for example, a Mastersizer (product name, manufactured by Malvern Panalytical Division of Spectris Co., Ltd.).

The proportion of tobacco powder contained in 100% by mass of tobacco sheet is preferably 45 to 95% by mass. When the proportion of the tobacco powder is 45% by mass or more, a sufficient tobacco aroma can be generated when heated. Furthermore, when the proportion of the tobacco powder is 95% by mass or less, sufficient amounts of aerosol generating agent and molding agent can be contained. The proportion of the tobacco powder is more preferably 50 to 93% by mass, even more preferably 55 to 90% by mass, and particularly preferably 60 to 88% by mass.

(Aerosol Generator)
From the viewpoint of increasing the amount of smoke when heated, the tobacco sheet according to the present embodiment preferably further contains an aerosol generating agent. Examples of the aerosol generating agent include glycerin, propylene glycol, 1,3-butanediol, etc. These may be used alone or in combination of two or more.

When an aerosol generating agent is included in the tobacco sheet, the ratio of the aerosol generating agent contained in 100% by mass of the tobacco sheet is preferably 4 to 50% by mass. When the ratio of the aerosol generating agent is 4% by mass or more, sufficient aerosol can be generated when heated in terms of quantity. Furthermore, when the ratio of the aerosol generating agent is 50% by mass or less, sufficient aerosol can be generated when heated in terms of heat capacity. The ratio of the aerosol generating agent is more preferably 6 to 40% by mass, even more preferably 8 to 30% by mass, and particularly preferably 10 to 20% by mass.

(Molding agent)
From the viewpoint of maintaining the shape, the tobacco sheet according to the present embodiment preferably further contains a molding agent. Examples of the molding agent include polysaccharides, proteins, synthetic polymers, etc. These may be used alone or in combination of two or more. Examples of the polysaccharides include cellulose derivatives and naturally occurring polysaccharides.

Examples of cellulose derivatives include cellulose ethers such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethylethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, benzyl cellulose, trityl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, and aminoethyl cellulose; organic acid esters such as cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, and tosyl cellulose; and inorganic acid esters such as cellulose nitrate, cellulose sulfate, cellulose phosphate, and cellulose xanthogenate.

Naturally derived polysaccharides include, for example, polysaccharides derived from plants such as guar gum, tara gum, roasted bean gum, tamarind seed gum, pectin, gum arabic, tragacanth gum, karaya gum, ghatti gum, arabinogalactan, amas seed gum, cassia gum, psyllium seed gum, and desert mugwort seed gum; polysaccharides derived from algae such as carrageenan, agar, alginic acid, propylene glycol alginate, furcellaran, and velvet extract; polysaccharides derived from microorganisms such as xanthan gum, gellan gum, curdlan, pullulan, Agrobacterium succinoglycan, welan gum, macrophomopsis gum, and rhamsan gum; polysaccharides derived from crustaceans such as chitin, chitosan, and glucosamine; and starches such as starch, sodium starch glycolate, pregelatinized starch, and dextrin.

Examples of proteins include cereal proteins such as wheat gluten and rye gluten. Examples of synthetic polymers include polyphosphate, sodium polyacrylate, polyvinylpyrrolidone, etc.

When a molding agent is contained in the tobacco sheet, the ratio of the molding agent contained in 100% by mass of the tobacco sheet is preferably 0.1 to 15% by mass. When the ratio of the molding agent is 0.1% by mass or more, it becomes possible to mold the mixture of raw materials into a sheet. Furthermore, when the ratio of the molding agent is 15% by mass or less, it becomes possible to sufficiently use other raw materials to ensure the functions required of the tobacco-containing segment of a non-combustion heating type flavor inhaler. The ratio of the molding agent is more preferably 0.2 to 13% by mass, even more preferably 0.5 to 12% by mass, and particularly preferably 1 to 10% by mass.

(Reinforcing agent)
The tobacco sheet according to the present embodiment may further contain a reinforcing agent from the viewpoint of further improving the physical properties. Examples of reinforcing agents include fibrous substances such as fibrous pulp, insoluble fiber, and fibrous synthetic cellulose, and liquid substances with a surface coating function that form a film when dried, such as pectin suspension. These may be used alone or in combination of two or more.

When a reinforcing agent is included in the tobacco sheet, the proportion of the reinforcing agent in 100% by mass of the tobacco sheet is preferably 4 to 60% by mass. Within this range, other ingredients can be used sufficiently to ensure the functionality required of the tobacco-containing segment of a non-combustion heating-type flavor inhaler. The proportion of the reinforcing agent is more preferably 4.5 to 55% by mass, and even more preferably 5 to 50% by mass.

(Moisturizing agent)
From the viewpoint of maintaining quality, the tobacco sheet according to the present embodiment may further contain a humectant. Examples of humectants include sugar alcohols such as sorbitol, erythritol, xylitol, maltitol, lactitol, mannitol, and reduced maltose syrup. These may be used alone or in combination of two or more.

When a humectant is contained in the tobacco sheet, the proportion of the humectant contained in 100% by mass of the tobacco sheet is preferably 1 to 15% by mass. Within this range, other ingredients can be used sufficiently to ensure the functionality required of the tobacco-containing segment of a non-combustion heating type flavor inhaler. The proportion of the humectant is more preferably 2 to 12% by mass, and even more preferably 3 to 10% by mass.

(Other ingredients)
The tobacco sheet according to the present embodiment may contain, in addition to the tobacco powder, the aerosol generating agent, the molding agent, the reinforcing agent, and the moisturizing agent, flavorings such as fragrances and flavorings, colorants, humectants, preservatives, diluents such as inorganic substances, and the like, as necessary.

(Bulkiness)
The expansion bulk of the tobacco sheet according to the present embodiment is preferably 190cc/100g or more. By having the expansion bulk of 190cc/100g or more, the total heat capacity of the tobacco-containing segment of the non-combustion heating type flavor inhaler can be sufficiently reduced, and the tobacco sheet filled in the tobacco-containing segment can contribute more to aerosol generation. The expansion bulk is more preferably 210cc/100g or more, and even more preferably 230cc/100g or more. The upper limit of the expansion bulk range is not particularly limited, but can be, for example, 800cc/100g or less. The expansion bulk is a value measured by cutting the tobacco sheet into a size of 0.8mm x 9.5mm, leaving it in a 22°C, 60% humidity conditioned room for 48 hours, and then measuring it with DD-60A (trade name, manufactured by Borgwald). The measurement is carried out by placing 15 g of shredded tobacco sheet in a cylindrical container having an inner diameter of 60 mm, and compressing it for 30 seconds under a load of 3 kg, and determining the volume.

(Structure of tobacco sheet)
In this embodiment, the "tobacco sheet" refers to a sheet shape formed from the components that make up the tobacco sheet, such as tobacco powder. Here, the "sheet" refers to a shape having a pair of approximately parallel main surfaces and side surfaces. The length and width of the tobacco sheet are not particularly limited, and can be appropriately adjusted according to the filling mode. The thickness of the tobacco sheet is not particularly limited, but is preferably 100 to 1000 μm, more preferably 150 to 600 μm, in consideration of the balance between heat transfer efficiency and strength.

(Production method of tobacco sheet)
The tobacco sheet according to the present embodiment can be manufactured by known methods such as rolling, casting, etc. Details of various tobacco sheets manufactured by such methods are disclosed in "Encyclopedia of Tobacco, Tobacco Research Center, March 31, 2009."

<Rolling method>
An example of a method for producing a tobacco sheet by rolling includes the following steps.
(1) A step of mixing water, tobacco powder, an aerosol generating agent, a molding agent, and a reinforcing agent to obtain a mixture.
(2) A step of feeding the mixture into a rolling roller and rolling it.
(3) A process of drying the rolled product in a dryer.
When producing a tobacco sheet by this method, the surface of the rolling rollers may be heated or cooled, the rotation speed of the rolling rollers may be adjusted, and the distance between the rolling rollers may be adjusted, depending on the purpose. One or more rolling rollers may be used to obtain a tobacco sheet of a desired basis weight.

<Casting method>
An example of a method for producing a tobacco sheet by a casting method includes the following steps.
(1) A step of mixing water, tobacco powder, an aerosol generating agent, a molding agent, and pulp to obtain a mixture.
(2) The mixture is spread (cast) into a thin sheet and dried to form a tobacco sheet.
When producing tobacco sheets using this method, a step may be added in which a slurry of water, tobacco powder, an aerosol generating agent, a molding agent, and pulp is irradiated with ultraviolet light or X-rays to remove some of the components, such as nitrosamines.

[Non-combustion heating type flavor inhaler]
The non-combustion heating type flavor inhaler according to the present embodiment includes a tobacco-containing segment including the tobacco sheet according to the present embodiment, etc. Since the non-combustion heating type flavor inhaler according to the present embodiment includes a tobacco-containing segment filled with the highly expandable tobacco sheet according to the present embodiment, the total heat capacity of the tobacco-containing segment can be sufficiently reduced, and the tobacco sheet filled in the tobacco-containing segment can contribute more to aerosol generation.

An example of a non-combustion heating type flavor inhaler according to this embodiment is shown in Figure 1. The non-combustion heating type flavor inhaler 1 shown in Figure 1 comprises a tobacco-containing segment 2 filled with a tobacco sheet or the like according to this embodiment, a cylindrical cooling segment 3 having perforations 8 on its circumference, a center hole segment 4, and a filter segment 5. The non-combustion heating type flavor inhaler according to this embodiment may have other segments in addition to the tobacco-containing segment, the cooling segment, the center hole segment, and the filter segment.

The axial length of the non-combustion heating type flavor inhaler according to the present embodiment is not particularly limited, but is preferably 40 mm or more and 90 mm or less, more preferably 50 mm or more and 75 mm or less, and even more preferably 50 mm or more and 60 mm or less. The circumferential length of the non-combustion heating type flavor inhaler is preferably 16 mm or more and 25 mm or less, more preferably 20 mm or more and 24 mm or less, and even more preferably 21 mm or more and 23 mm or less. For example, the length of the tobacco-containing segment may be 20 mm, the length of the cooling segment may be 20 mm, the length of the center hole segment may be 8 mm, and the length of the filter segment may be 7 mm. The length of the filter segment may be selected within a range of 4 mm or more and 10 mm or less. The airflow resistance of the filter segment is selected to be 15 mmH ₂ O/seg or more and 60 mmH ₂ O/seg or less per segment. These individual segment lengths may be appropriately changed depending on the manufacturing suitability, required quality, and the like. Furthermore, even if a center hole segment is not used and only a filter segment is disposed downstream of the cooling segment, it can still function as a non-combustion heating type flavor inhaler.

(Tobacco-containing segment)
The tobacco-containing segment 2 is a cigarette paper (hereinafter also referred to as a wrapper) filled with the tobacco sheet or the like according to the present embodiment. The method for filling the cigarette paper (hereinafter also referred to as a wrapper) with the tobacco sheet or the like is not particularly limited, but for example, the tobacco sheet or the like may be wrapped in the wrapper, or the tobacco sheet or the like may be filled into a cylindrical wrapper. When the tobacco sheet has a longitudinal direction, such as a rectangular shape, the tobacco sheet or the like may be filled so that the longitudinal direction is in an unspecified direction within the wrapper, or the tobacco sheet or the like may be filled and aligned so that the longitudinal direction is in the axial direction of the tobacco-containing segment 2 or perpendicular to the axial direction.

(Cooling segment)
1, the cooling segment 3 may be formed of a cylindrical member 7. The cylindrical member 7 may be, for example, a cardboard tube formed into a cylindrical shape.

The tubular member 7 and the mouthpiece lining paper 12 described later are provided with perforations 8 penetrating both. Due to the presence of the perforations 8, outside air is introduced into the cooling segment 3 during inhalation. As a result, the vaporized aerosol components generated by heating the tobacco-containing segment 2 come into contact with the outside air, and as their temperature drops, they are liquefied to form an aerosol. The diameter (distance across) of the perforations 8 is not particularly limited, but may be, for example, 0.5 mm or more and 1.5 mm or less. The number of perforations 8 is not particularly limited, and may be one or two or more. For example, multiple perforations 8 may be provided around the circumference of the cooling segment 3.

The amount of outside air introduced through the perforations 8 is preferably 85% by volume or less, more preferably 80% by volume or less, of the total volume of gas inhaled by the user. By setting the ratio of the amount of outside air to 85% by volume or less, it is possible to sufficiently suppress the reduction in flavor due to dilution by outside air. This is also called the ventilation ratio. From the viewpoint of cooling performance, the lower limit of the ventilation ratio range is preferably 55% by volume or more, more preferably 60% by volume or more.

The cooling segment may also be a segment comprising a sheet of suitable construction material that is crinkled, pleated, gathered, or folded. The cross-sectional profile of such an element may exhibit randomly oriented channels. The cooling segment may also comprise a bundle of longitudinally extending tubes. Such a cooling segment may be formed, for example, by wrapping the pleated, gathered, or folded sheet material with a paper wrapper.

The axial length of the cooling segment can be, for example, 7 mm or more and 28 mm or less, for example, 18 mm. The cooling segment can also be substantially circular in its axial cross-sectional shape and have a diameter of, for example, 5 mm or more and 10 mm or less, for example, about 7 mm.

(Center hole segment)
The center hole segment is composed of a filling layer having one or more hollow parts and an inner plug wrapper (inner wrapping paper) covering the filling layer. For example, as shown in FIG. 1, the center hole segment 4 is composed of a second filling layer 9 having a hollow part and a second inner plug wrapper 10 covering the second filling layer 9. The center hole segment 4 has a function of increasing the strength of the mouthpiece segment 6. The second filling layer 9 can be, for example, a rod with an inner diameter of φ1.0 mm or more and φ5.0 mm or less, which is filled with cellulose acetate fibers at a high density and hardened by adding a plasticizer containing triacetin at 6% by mass or more and 20% by mass or less relative to the mass of cellulose acetate. Since the second filling layer 9 has a high fiber filling density, air and aerosol flow only through the hollow part during inhalation, and hardly flow inside the second filling layer 9. Since the second filling layer 9 inside the center hole segment 4 is a fiber filling layer, the touch from the outside during use is less likely to cause discomfort to the user. It is also possible that the center hole segment 4 does not have the second inner plug wrapper 10 and its shape is maintained by thermoforming.

(Filter Segment)
The configuration of the filter segment 5 is not particularly limited, and may be composed of one or more packed layers. The outside of the packed layer may be wrapped with one or more wrapping papers. The airflow resistance per segment of the filter segment 5 can be appropriately changed depending on the amount and material of the packing filled in the filter segment 5. For example, when the packing is cellulose acetate fiber, the airflow resistance can be increased by increasing the amount of cellulose acetate fiber filled in the filter segment 5. When the packing is cellulose acetate fiber, the packing density of the cellulose acetate fiber can be 0.13 to 0.18 g/cm ^3. The airflow resistance is a value measured by an airflow resistance measuring device (product name: SODIMAX, manufactured by SODIM).

The circumferential length of the filter segment 5 is not particularly limited, but is preferably 16 to 25 mm, more preferably 20 to 24 mm, and even more preferably 21 to 23 mm. The axial length of the filter segment 5 can be selected from 4 to 10 mm, and is selected so that the airflow resistance is 15 to 60 mmH ₂ O/seg. The axial length of the filter segment 5 is preferably 5 to 9 mm, and more preferably 6 to 8 mm. The cross-sectional shape of the filter segment 5 is not particularly limited, but may be, for example, a circle, an ellipse, a polygon, or the like. In addition, a destructible capsule containing a fragrance, fragrance beads, or a fragrance may be directly added to the filter segment 5.

As shown in FIG. 1, the center hole segment 4 and the filter segment 5 can be connected by an outer plug wrapper (outer wrapping paper) 11. The outer plug wrapper 11 can be, for example, a cylindrical paper. The tobacco-containing segment 2, the cooling segment 3, and the connected center hole segment 4 and filter segment 5 can be connected by a mouthpiece lining paper 12. These connections can be made, for example, by applying a vinyl acetate glue or other adhesive to the inner surface of the mouthpiece lining paper 12, inserting the three segments, and rolling them up. These segments may be connected in multiple separate instances using multiple lining papers.

[Non-combustion heating type flavor inhalation system]
The non-combustion heating type flavor inhalation system according to the present embodiment includes a non-combustion heating type flavor inhaler according to the present embodiment and a heating device for heating a tobacco-containing segment of the non-combustion heating type flavor inhaler. The non-combustion heating type flavor inhalation system according to the present embodiment may have other configurations in addition to the non-combustion heating type flavor inhaler according to the present embodiment and the heating device.

An example of a non-combustion heating type flavor inhalation system according to this embodiment is shown in Figure 2. The non-combustion heating type flavor inhalation system shown in Figure 2 includes a non-combustion heating type flavor inhaler 1 according to this embodiment, and a heating device 13 that heats the tobacco-containing segment of the non-combustion heating type flavor inhaler 1 from the outside.

2(a) shows the state before the non-combustion heating type flavor inhaler 1 is inserted into the heating device 13, and FIG. 2(b) shows the state after the non-combustion heating type flavor inhaler 1 is inserted into the heating device 13 and heated. The heating device 13 shown in FIG. 2 includes a body 14, a heater 15, a metal tube 16, a battery unit 17, and a control unit 18. The body 14 has a cylindrical recess 19, and the heater 15 and the metal tube 16 are arranged on the inner side of the recess 19 at a position corresponding to the tobacco-containing segment of the non-combustion heating type flavor inhaler 1 inserted into the recess 19. The heater 15 can be a heater using electrical resistance, and is heated by being supplied with power from the battery unit 17 in response to an instruction from the control unit 18 that controls the temperature. The heat generated by the heater 15 is transferred to the tobacco-containing segment of the non-combustion heating type flavor inhaler 1 through the metal tube 16, which has high thermal conductivity.

2(b) is a schematic illustration, and therefore there is a gap between the outer periphery of the non-combustion heating type flavor inhaler 1 and the inner periphery of the metal tube 16, but in reality, for the purpose of efficient heat transfer, it is preferable that there is no gap between the outer periphery of the non-combustion heating type flavor inhaler 1 and the inner periphery of the metal tube 16. Note that although the heating device 13 heats the tobacco-containing segment of the non-combustion heating type flavor inhaler 1 from the outside, it may also heat from the inside.

The heating temperature by the heating device is not particularly limited, but is preferably 400°C or less, more preferably 150°C to 400°C, and even more preferably 200°C to 350°C. The heating temperature refers to the temperature of the heater of the heating device.

Furthermore, there is a demand for improved delivery of flavor components (smoke) in non-combustion heating type flavor inhalers. Below, we will explain a non-combustion heating type flavor inhaler with improved delivery of flavor components (smoke).

[First aspect]
This embodiment includes the following [1a] to [19a]. According to this embodiment, it is possible to provide a non-combustion heating type flavor inhaler and a non-combustion heating type flavor inhalation system in which each component is supplied to a user in a uniform balance from the first half to the second half of use.

[1a] A non-combustion heating type flavor inhaler comprising a tobacco-containing segment and a mouthpiece segment,
the tobacco-containing segment includes a first segment including an aerosol generating agent, and a second segment including the tobacco sheet for a non-combustion heating-type flavor inhaler according to the present embodiment;
The non-combustion heating type flavor inhaler, wherein the mouthpiece segment includes a cooling segment and a filter segment.

[2a] A non-combustion heating type flavor inhaler described in [1a], wherein the aerosol generating agent is at least one selected from the group consisting of glycerin, propylene glycol, and 1,3-butanediol.

[3a] A non-combustion heating type flavor inhaler described in [1a] or [2a], wherein the first segment further contains vegetable fibers.

[4a] A non-combustion heating type flavor inhaler described in [3a], wherein the first segment includes a cylindrical wrapper and a nonwoven fabric composed of the plant fibers filled inside the wrapper, and the nonwoven fabric contains the aerosol generating agent.

[5a] A non-combustion heating type flavor inhaler described in [4a], in which multiple sheets of the sheet-like nonwoven fabric are stacked and filled inside the wrapper in an S-shaped folded state.

[6a] A non-combustion heating type flavor inhaler described in [4a] or [5a], wherein the wrapper is a metal foil, a laminated sheet of metal foil and paper, a polymer film, a laminated sheet of polymer film and paper, or paper having a coating agent selected from the group consisting of modified cellulose, modified starch, polyvinyl alcohol, and vinyl acetate applied to the surface.

[7a] The wrapper is a laminate of a paper layer constituting an outer surface and a liquid-impermeable layer constituting an inner surface,
the liquid impermeable layer is a metal foil, a polymer film, or a layer of a coating selected from the group consisting of modified cellulose, modified starch, polyvinyl alcohol, and vinyl acetate;
The non-combustion heating type flavor inhaler according to any one of [4a] to [6a], wherein the liquid impermeable layers of the wrapper are bonded to each other at one end and the other end of the wrapper, so that the wrapper is formed into a cylindrical shape.

[8a] A non-combustion heating type flavor inhaler described in any of [1a] to [7a], wherein the first segment further contains a thickener.

[9a] A non-combustion heating type flavor inhaler described in any of [1a] to [8a], wherein the tobacco sheet contains a flavor development aid.

[10a] A non-combustion heating type flavor inhaler described in any of [1a] to [9a], wherein the tobacco sheet contains lipids.

[11a] A non-combustion heating type flavor inhaler described in any of [1a] to [10a], wherein the second segment is arranged on the mouthpiece segment side relative to the first segment.

[12a] A non-combustion heating type flavor inhaler described in any of [1a] to [10a], in which the cylindrical first segment is arranged extending in the axial direction of the tobacco-containing segment, and the second segment is arranged on the outer periphery of the first segment.

[13a] A non-combustion heating type flavor inhaler described in any of [1a] to [10a], in which the cylindrical second segment is arranged extending in the axial direction of the tobacco-containing segment, and the first segment is arranged on the outer periphery of the second segment.

[14a] A non-combustion heating type flavor inhaler described in any of [1a] to [11a], in which the first segment and the second segment are connected by being wrapped with an outer wrapper containing a thermally conductive material.

[15a] A non-combustion heating type flavor inhaler according to any one of [1a] to [14a],
a heating device including a heater for heating the tobacco-containing segment of the non-combustion heating type flavor inhaler;
A non-combustion heating type flavor inhalation system comprising:

[16a] A non-combustion heating type flavor inhalation system described in [15a], wherein the heater includes a first peripheral heating heater that heats the entire side of the cylindrical first segment and heats a portion of the side of the cylindrical second segment or does not heat the second segment.

[17a] A non-combustion heating flavor inhalation system as described in [15a], wherein the heater includes a second peripheral heater that heats the entire side and bottom surfaces of the cylindrical first segment and heats at least a portion of the side surfaces of the cylindrical second segment or does not heat the second segment.

[18a] A non-combustion heating type flavor inhalation system described in any of [15a] to [17a], wherein the heater includes an internal heater that heats the entire interior of the cylindrical first segment in the axial direction and heats the interior of the cylindrical second segment in a portion of the axial direction or does not heat the second segment.

[19a] A non-combustion heating type flavor inhalation system described in any of [15a] to [18a], wherein the heating temperature by the heater is 200 to 350°C.

[Non-combustion heating type flavor inhaler]
In the non-combustion heating type flavor inhaler according to the present embodiment, the tobacco-containing segment includes a first segment including an aerosol generating agent and a second segment including the tobacco sheet for a non-combustion heating type flavor inhaler according to the present embodiment. Therefore, when heating the tobacco-containing segment, the heating temperature of the first segment including the aerosol generating agent having a high boiling point (low vapor pressure) can be increased, and the heating temperature of the second segment including flavor components such as tobacco components having a low boiling point (high vapor pressure) can be decreased. This makes it possible to suppress the volatilization of flavor components having a low boiling point (high vapor pressure) in the first half of use, and to maintain the volatilization and supply of flavor components until the second half of use. Furthermore, the volatilization of the aerosol generating agent having a high boiling point (low vapor pressure) in the first half of use can be promoted. Therefore, in the non-combustion heating type flavor inhaler according to the present embodiment, the balance of each component supplied to the user from the first half to the second half of use can be made uniform.

An example of a non-combustion heating type flavor inhaler according to this embodiment is shown in FIG. 3(a). The non-combustion heating type flavor inhaler 101 shown in FIG. 3(a) includes a tobacco-containing segment 102 and a mouthpiece segment 103. The tobacco-containing segment 102 includes a first segment 104 containing an aerosol generating agent, and a second segment 105 containing a tobacco sheet for a non-combustion heating type flavor inhaler according to this embodiment, which is arranged downstream of the first segment 104. The mouthpiece segment 103 includes a cooling segment 106, a center hole segment 107, and a filter segment 108 in this order from the upstream side. Note that in this embodiment, the mouthpiece segment 103 does not need to include the center hole segment 107. During use, at least a portion of the tobacco-containing segment 102 (mainly the first segment 104) is heated, causing the aerosol generating agent in the first segment 104 and the flavor component in the second segment 105 to vaporize, which are transferred by inhalation to the mouthpiece segment 103 and then drawn through the end of the filter segment 108.

(Tobacco-containing segment)
The tobacco-containing segment according to the present embodiment includes a first segment including an aerosol generating agent and a second segment including the tobacco sheet for a non-combustion heating-type flavor inhaler according to the present embodiment. The tobacco-containing segment according to the present embodiment may include a plurality of the first segments and/or the second segments.

<First segment>
The first segment according to this embodiment includes an aerosol generating agent. Examples of the aerosol generating agent include glycerin, propylene glycol, 1,3-butanediol, etc. These may be used alone or in combination of two or more.

From the viewpoint of sufficiently retaining the aerosol generating agent, it is preferable that the first segment further contains plant fibers. Examples of plant fibers include wood pulp, hemp, corn, bamboo, cotton, tobacco, etc. These may be used alone or in combination of two or more types. The plant fibers may be a plant fiber sheet in which plant fibers are assembled. From the viewpoint of stably retaining the aerosol generating agent in the plant fiber sheet and ensuring the required amount of aerosol generated, it is preferable that the plant fibers contain 10 to 50 mass % of the aerosol generating agent, and more preferably 12 to 30 mass %.

The first segment preferably includes a cylindrical wrapper and a nonwoven fabric made of vegetable fibers filled inside the wrapper, and the nonwoven fabric preferably includes an aerosol generating agent. In the first segment, the nonwoven fabric is capable of sufficiently holding the aerosol generating agent. The thickness of the nonwoven fabric is not particularly limited, but may be, for example, 1 to 2 mm. The nonwoven fabric preferably contains 10 to 50% by mass of the aerosol generating agent, and more preferably contains 12 to 30% by mass.

The first segment preferably includes a cylindrical wrapper and paper made of plant fibers filled inside the wrapper, the paper preferably including an aerosol generating agent. In the first segment, the paper is capable of sufficiently holding the aerosol generating agent. The thickness of the paper is not particularly limited, but may be, for example, 50 to 200 μm. The paper preferably includes 10 to 50% by mass of the aerosol generating agent, and more preferably includes 12 to 30% by mass of the aerosol generating agent.

In the first segment, as shown in FIG. 4(a), for example, it is preferable that multiple sheets of sheet-like nonwoven fabric 121 are stacked and folded into an S-shape and filled inside the wrapper. Since the nonwoven fabric is filled in a folded state in such a first segment, the gaps between the nonwoven fabric are usually not visible, but when a heater for internal heating, for example, a blade-shaped or rod-shaped heater, is inserted, the heater penetrates into the gaps between the nonwoven fabric and the nonwoven fabric itself is not damaged. Therefore, when the heater is heated, it is possible to prevent the nonwoven fabric from burning and becoming brittle, and remaining as waste in the device.

In addition, in the first segment, it is preferable that the sheet-like paper 131 is filled inside the wrapper in a gathered state, as shown in FIG. 4(b), for example. In such a first segment, when a heater for internal heating, such as a blade-shaped or rod-shaped heater, is inserted, the heater enters the gap between the papers, and the paper itself is not damaged. Therefore, when the heater is heated, it is possible to prevent the paper from becoming burnt and brittle and remaining as waste in the device. In addition, the nonwoven fabric may be gathered and filled instead of being filled folded into the S-shape. When the nonwoven fabric is gathered and filled, multiple channels through which air can easily pass in the air flow direction are formed, so that the airflow resistance of the first segment can be reduced.

In addition, from the viewpoint of suppressing the seepage of the aerosol generating agent, it is desirable to use a wrapper with reduced liquid permeability. Examples of wrappers that are difficult to permeate liquid include metal foil, a laminated sheet of metal foil and paper, a polymer film, a laminated sheet of polymer film and paper, and paper coated with a coating agent that prevents the permeation of liquids such as modified cellulose, modified starch, polyvinyl alcohol, and vinyl acetate. In addition to preventing the permeation of liquids, a wrapper containing metal foil with excellent thermal conductivity is preferable from the viewpoint of making the temperature distribution in the longitudinal direction of the first segment uniform. Furthermore, by arranging the metal foil on the inside and the paper on the outside after winding the rod as a laminated sheet of metal foil and paper, the appearance can be made similar to that of a normal combustion-type flavor inhaler (cigarette). When the amount of aerosol generating agent contained in the first segment is relatively small, it is preferable to use paper whose surface is coated with a coating agent that prevents liquid from passing through, such as modified cellulose, modified starch, polyvinyl alcohol, and vinyl acetate, because this makes the rod hardness, elasticity, and feel of the first segment similar to those of a normal combustion-type flavor inhaler (cigarette).

When the wrapper is a laminate of a paper layer constituting the outer surface and a liquid-impermeable layer constituting the inner surface, the liquid-impermeable layer can be a metal foil, a polymer film, or a layer of a coating agent selected from the group consisting of modified cellulose, modified starch, polyvinyl alcohol, and vinyl acetate. Here, it is preferable that the liquid-impermeable layers of the wrapper are bonded to each other at one end and the other end of the wrapper, so that the wrapper is formed into a cylindrical shape. For example, as shown in FIG. 5, a nonwoven fabric 122 containing an aerosol generating agent is filled in a cylindrical wrapper that is a laminate of a paper layer 124 constituting the outer surface and a liquid-impermeable layer 123 constituting the inner surface. Here, the liquid-impermeable layers 123 are bonded to each other at one end and the other end of the wrapper (bonded portion 125), so that the wrapper is formed into a cylindrical shape. By bonding the liquid-impermeable layers to each other in this manner, it is possible to further suppress the aerosol generating agent from seeping out to the outside.

The first segment preferably further contains a thickener from the viewpoint of improving the retention of the aerosol generator. For example, aerosol generators such as glycerin and propylene glycol are liquid at room temperature, and when a large amount of the aerosol generator is contained in a nonwoven fabric, etc., there is a possibility that it will flow out of the nonwoven fabric. However, by further containing a thickener in the nonwoven fabric, etc., the outflow of the aerosol generator to the outside can be suppressed, and handling can be improved. Examples of thickeners include thickening polysaccharides such as gellan gum, tamarind gum, agar, carrageenan, pectin, and alginate, proteins such as collagen and gelatin, and modified celluloses such as HPC, CMC, and HPMC. These thickeners may be used alone or in combination of two or more. When the first segment contains a thickener, the content of the thickener is preferably 0.1 to 5.0 parts by mass per 100 parts by mass of the aerosol generator, depending on the type of thickener used. For example, when glycerin is used as the aerosol generator, native gellan gum as the thickener, and water as the diluent, 0.3 to 0.7 parts by mass of native gellan gum and 23.5 parts by mass of water per 100 parts by mass of glycerin can be used to obtain an aerosol generator having a viscosity of 2000 to 26000 (mPa·s at 25° C.) and excellent viscosity retention. The aerosol generator is in a gel state in the room temperature range and becomes liquid when heated to about 60 to 70° C. In this way, when producing the first segment, the aerosol generator can be easily impregnated by heating the aerosol generator in a liquid state and applying it to a nonwoven fabric or paper, and after the temperature drops to about room temperature, the aerosol generator becomes in a gel state and is stably retained.

The first segment may contain, in addition to the aerosol generating agent, plant fiber (nonwoven fabric or paper), wrapper, and thickener, for example, tobacco components, flavoring components other than tobacco components (external flavorings), etc. Examples of flavoring components other than tobacco components include L-menthol, licorice extract, reducing sugar, cocoa extract, etc. The first segment may not contain a flavoring component.

The axial length of the first segment is not particularly limited, but may be, for example, 5 to 15 mm. The circumferential length of the first segment is not particularly limited, but may be, for example, 15 to 24 mm.

<Second Segment>
The second segment according to the present embodiment includes the tobacco sheet for a non-combustion heating type flavor inhaler according to the present embodiment. That is, the second segment includes flavor components such as tobacco components. The second segment may include, for example, a cylindrical wrapper and the tobacco sheet for a non-combustion heating type flavor inhaler according to the present embodiment filled inside the wrapper.

The tobacco sheet may contain a flavor development aid. The flavor development aid may contain at least one of carbonates, hydrogen carbonates, oxides, and hydroxides of alkali metals and/or alkaline earth metals. Preferably, the flavor development aid is potassium carbonate or sodium carbonate. Since most of the tobacco components contained in the tobacco sheet are amines, the tobacco sheet containing a flavor development aid ensures the volatilization of the tobacco components even at relatively low temperatures, and the tobacco flavor can be fully developed. The amount of the flavor development aid contained in the tobacco sheet is preferably 5 to 20 parts by mass per 100 parts by mass of the tobacco sheet. The pH of the tobacco sheet may be 7 to 11 by adding the flavor development aid. The pH can be measured with a pH meter (e.g., IQ240 manufactured by IQ Scientific Instruments Inc.). For example, 2 to 10 g of tobacco sheet is mixed with 10 times the amount of distilled water by mass, and the mixture of water and tobacco sheet is shaken at 200 rpm for 10 minutes at room temperature (e.g., 22°C) and allowed to stand for 5 minutes, after which the pH of the resulting extract is measured with a pH meter.

The tobacco sheet may also contain lipids. Examples of lipids include acylglycerols such as monoglycerides, diglycerides, and triglycerides, fatty acids, and the like. These may be used alone or in combination of two or more. When the tobacco sheet contains lipids, the excess volatilization of flavor components such as nicotine and the like contained in the tobacco sheet can be suppressed by the interaction between the lipids and flavor components such as nicotine contained in the tobacco sheet. When the tobacco sheet contains lipids, the aerosol generated during use may also contain a small amount of lipids. In this way, it is possible to suppress the re-vaporization of the flavor components after the vapor of the flavor components and the aerosol generating agent is cooled to form the aerosol. The amount of lipids contained in the tobacco sheet is preferably 2 to 15 parts by mass per 100 parts by mass of the tobacco sheet.

The second segment may be, for example, a cylindrical wrapper in which tobacco sheet shreds are randomly or uniformly filled, or a tobacco sheet is not shredded but is gathered and filled. Hereinafter, the tobacco sheet shreds are also referred to as tobacco shreds. Examples of wrappers include cigarette paper made into a cylindrical shape. The nicotine content of the filling material filled in the wrapper is preferably 1.5% by mass or more, and more preferably 2.0 to 4.0% by mass. In addition, it is preferable that the filling density of the tobacco shreds filled in the wrapper is 0.2 to 0.7 mg/ ^mm3 , because this ensures sufficient generation of flavor components during use and ensures sufficient rod hardness of the second segment.

There are no particular limitations on the size or preparation method of the tobacco shreds. One example is a tobacco sheet shredded to a width of 0.5 mm or more and 2.0 mm or less and a length of 3 mm or more and 10 mm or less. Tobacco shreds of this size are preferable for filling the filling. Another example is a tobacco sheet shredded to a width of 0.5 mm or more and 2.0 mm or less and a length longer than the tobacco shreds described above, preferably about the same length as the filling (strand-type shreds). For the strand-type shreds, it is preferable to use a tobacco sheet from the viewpoint of ease of molding.

The moisture content of the tobacco shreds can be 10% by mass or more and 15% by mass or less, and preferably 11% by mass or more and 13% by mass or less, based on the total mass of the tobacco shreds. Such a moisture content can suppress the occurrence of rolling stains after the tobacco shreds are filled into the filling material.

The packing density of the tobacco sheet inside the wrapper can be appropriately set depending on the form of the tobacco sheet to be packed, the desired flavor, the airflow resistance, etc. For example, the packing density may be 0.2 mg/ ^mm3 or more and 0.7 mg/ ^mm3 or less. The packing density is calculated based on the ratio of the mass of the tobacco sheet to the internal volume of the rod formed by the wrapper.

The axial length of the second segment is not particularly limited, but may be, for example, 5 to 15 mm. The circumferential length of the second segment is not particularly limited, but may be, for example, 15 to 24 mm.

<Composition of Tobacco-containing Segment>
The configuration of the tobacco-containing segment is not particularly limited as long as the tobacco-containing segment includes the first segment and the second segment, but it is preferable that the second segment is disposed on the mouthpiece segment side (downstream side) of the first segment. For example, as shown in FIG. 3(a), a cylindrical second segment 105 can be disposed on the mouthpiece segment 103 side (downstream side) of a cylindrical first segment 104. In FIG. 3(a), the first segment 104 can be configured by filling a nonwoven fabric 109 containing an aerosol generating agent and made of plant fibers in a first wrapper 110. In addition, the second segment 5 can be configured by filling a tobacco sheet 111 in a second wrapper 112. The volatilization of each component contained in the first segment and the second segment is mainly determined by the heating temperature, but the volatilization of the component is promoted by the presence of a substance that is highly compatible with the volatilizing component in the vicinity. In the above configuration, the aerosol generating agent volatilized in the first segment is cooled and liquefied (aerosolized) at the moment it flows into the second segment during inhalation, and the flavor component (e.g., nicotine) present in the second segment is dissolved in the aerosol and carried out to the outside of the tobacco-containing segment, thereby decreasing the concentration of the flavor component in the second segment and promoting volatilization. This ensures release efficiency without needing to increase the temperature of the second segment too much. Therefore, the flavor component can be released from the second segment at low temperatures every time a puff is performed, and as a result, it is possible to prevent the flavor component from being exhausted. The ratio (A/B) of the length (A) of the first segment to the length (B) of the second segment in the axial direction of the tobacco-containing segment is preferably 0.3 to 3.0, more preferably 0.5 to 2.0.

The first segment and the second segment can be connected by being wrapped with an outer wrapper. Here, the outer wrapper may be a normal paper wrapper, but is preferably an outer wrapper containing a thermally conductive material. By wrapping the first segment and the second segment with an outer wrapper containing a thermally conductive material, for example, even when only the side surface of the first segment is heated by a peripheral heater, the heat of the heater can be uniformly and efficiently transferred to the second segment. As a thermally conductive material, for example, a metal foil having a higher thermal conductivity than paper can be used. In particular, it is preferable to use a metal foil such as aluminum foil or stainless steel foil that has a thermal conductivity of 10 W/m·K or more, is inexpensive, rust-resistant, and has high processing characteristics (a thickness of several μm to 10 μm, has high tensile strength, and is easy to bend). For reference, the thermal conductivity of representative metal foils (alloy foils) is shown in Table 1.

The columnar first segment may extend in the axial direction of the tobacco-containing segment, and the second segment may be disposed on the outer periphery of the first segment. For example, as shown in FIG. 6(a), the second segment 105 may be disposed on the outer periphery (side) of the columnar first segment 104. In such a configuration, the first segment can be heated by inserting an internal heater such as a blade heater. In the above configuration, the first segment, which is to be heated at a higher temperature, is formed in a thin-wound shape, so that the first segment can be efficiently heated to a high temperature by the internal heater. In addition, by adjusting the packing density of each filling material to make the second segment easier to flow than the first segment, the aerosol generating agent mainly generated from the first segment does not move directly toward the mouthpiece, but the aerosol generating agent mainly generated from the first segment moves to the second segment, and then moves to the mouthpiece portion after carrying the flavor component. In this case, the interface between the first and second segments is preferably made of a permeable wrapper, such as a paper with an air permeability of 1000 to 30000 Coresta units, through which gases and aerosols can pass, or, even if no wrapper-like material is present at the interface, this is preferred from the viewpoint of facilitating the transfer of gaseous components from the first segment to the second segment.

The second columnar segment may extend in the axial direction of the tobacco-containing segment, and the first segment may be disposed on the outer periphery of the second segment. For example, as shown in FIG. 6(b), the first segment 104 may be disposed on the outer periphery (side) of the second columnar segment 105. In such a configuration, the side of the first segment can be heated by an outer periphery heater. In the above configuration, the first segment, which is to be heated at a higher temperature, is efficiently heated to a high temperature by an external heater. In addition, by adjusting the packing density of each filling material to make the second segment easier to flow than the first segment, the aerosol generating agent mainly generated from the first segment does not move directly toward the mouthpiece, but the aerosol generating agent mainly generated from the first segment moves to the second segment, and then moves to the mouthpiece portion after carrying the flavor component. In this case, the interface between the first and second segments is preferably made of a permeable wrapper, such as a paper with an air permeability of 1000 to 30000 Coresta units, through which gases and aerosols can pass, or, even if no wrapper-like material is present at the interface, this is preferred from the viewpoint of facilitating the transfer of gaseous components from the first segment to the second segment.

The axial length of the tobacco-containing segment is not particularly limited, but may be, for example, 12 to 50 mm. The circumferential length of the tobacco-containing segment is not particularly limited, but may be, for example, 15 to 24 mm.

(Mouthpiece segment)
The mouthpiece segment according to the present embodiment includes a cooling segment and a filter segment. The mouthpiece segment according to the present embodiment may include a plurality of cooling segments and/or filter segments. The mouthpiece segment according to the present embodiment may include other segments other than the cooling segment and the filter segment. Examples of other segments include a center hole segment.

<Cooling segment>
3A, the cooling segment 106 may be configured as a cylindrical member 113. The cylindrical member 113 may be, for example, a cardboard tube formed into a cylindrical shape.

The cooling segment is located downstream of the tobacco-containing segment. The function required of the cooling segment is to cool and liquefy (aerosolize) the flavor components and aerosol generating agent vapors generated in the tobacco-containing segment during use while minimizing the reduction of the flavor components and aerosol generating agent vapors by filtration and adsorption. For example, the difference between the segment internal temperature at the inlet of the cooling segment and the segment internal temperature at the outlet of the cooling segment during inhalation may be 20°C or more. When the flavor components and high-temperature vapor components of the aerosol generating agent pass through a cellulose acetate fiber-filled segment used as a filter member of a normal combustion-type flavor inhaler, the temperature difference between the segment inlet and the segment outlet may be 20°C or more, but when the flavor components and aerosol generating agent vapor pass through the fiber-filled layer, a large amount of the flavor components and aerosol generating agent vapors are reduced by filtration and adsorption. This fiber-filled layer is not referred to as a cooling segment in this application.

One embodiment of the cooling segment may be a hollow tube made of a sheet of paper or a sheet of paper laminated together to form a cylindrical shape. In addition to the above-mentioned paper, the material constituting the tube may be a sheet of cellulose acetate fiber corrugated or a plastic film such as polyolefin or polyester. In order to increase the cooling effect by bringing room temperature outside air into contact with high-temperature steam, it is preferable that the tube has holes around it for introducing outside air. By applying a polymer coating such as polyvinyl alcohol or a coating of polysaccharides such as pectin to the inner surface of the tube, the cooling effect can be increased by utilizing the heat of dissolution associated with the heat absorption or phase change of the coating. The airflow resistance of this cylindrical cooling segment is zero mmH ₂ O.

In another embodiment of the cooling segment, the inside of the cylindrically processed tube is preferably filled with a cooling sheet material. In this case, one or more air flow channels are provided in the flow direction, so that cooling by the cooling sheet can be achieved while achieving a low level of component removal during passage through the segment. The cooling segment when filled with the cooling sheet preferably has an airflow resistance of 0 to 30 mmH ₂ O. The resistance to flow (RTD) is the pressure required to force air through the entire length of the object under a test at 22° C. and a flow rate of 17.5 ml/sec at 760 torr. RTD is generally expressed in mmH ₂ O and is measured according to ISO 6565:2011. In this embodiment filled with the cooling sheet, the tube can also be provided with holes for the introduction of external air.

The total surface area of the cooling sheet member can be 300 mm ² /mm or more and 1000 mm ² /mm or less. This surface area is the surface area per length (mm) of the cooling sheet member in the air passage direction. The total surface area of the cooling sheet member is preferably 400 mm ² /mm or more, more preferably 450 mm ² /mm or more, while it is preferably 600 mm ² /mm or less, more preferably 550 mm ² /mm or less.

From the viewpoint of cooling function, it is desirable for the cooling sheet material to have a large surface area. From the viewpoint of reducing removal of flavor components and aerosol generating agents by filtration or adsorption, it is desirable for the cooling segment filled with the cooling sheet material to have a low airflow resistance. Thus, in a preferred embodiment, the cooling sheet may be formed by a thin sheet of material that is wrinkled to form channels in the flow direction, and then pleated, gathered, and folded.

In some embodiments, the thickness of the material constituting the cooling sheet member may be 5 μm or more and 500 μm or less, for example, 10 μm or more and 250 μm or less.

The cooling sheet member material may be a sheet material such as metal foil, polymer sheet, and low-permeability paper. In one embodiment, the cooling segment may include a sheet material selected from the group consisting of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polylactic acid, cellulose acetate, and aluminum foil.

In addition, it is also desirable to use paper as a material for the cooling sheet member from the viewpoint of reducing the environmental load. The paper used for the cooling sheet member desirably has a basis weight of 30 to 100 g/m ² and a thickness of 20 to 100 μm. From the viewpoint of reducing the removal of flavor components and aerosol generating agent components in the cooling segment, it is desirable for the air permeability of the paper used as a material for the cooling sheet to be low, and the air permeability is preferably 10 Coresta units or less. By applying a polymer coating such as polyvinyl alcohol or a polysaccharide coating such as pectin to the paper used as the cooling sheet member, the cooling effect can be increased by utilizing the heat of dissolution associated with the heat absorption and phase change of the coating.

In FIG. 3(a), the tubular member 113 and the mouthpiece lining paper 120 described later are provided with perforations 114 penetrating both. Due to the presence of the perforations 114, outside air is introduced into the cooling segment 106 during inhalation. As a result, the aerosol vaporized components generated by heating the tobacco-containing segment 102 come into contact with the outside air, and as their temperature drops, they are liquefied to form an aerosol. The diameter (distance across) of the perforations 114 is not particularly limited, but may be, for example, 0.5 mm or more and 1.5 mm or less. The number of perforations 114 is not particularly limited, and may be one or more. For example, multiple perforations 114 may be provided around the circumference of the cooling segment 106.

The amount of outside air introduced through the perforations 114 is preferably 85% by volume or less, more preferably 80% by volume or less, of the total volume of gas inhaled by the user. By setting the ratio of the amount of outside air to 85% by volume or less, it is possible to sufficiently suppress the reduction in flavor due to dilution by outside air. This is also called the ventilation ratio. From the viewpoint of cooling performance, the lower limit of the ventilation ratio range is preferably 55% by volume or more, more preferably 60% by volume or more.

In some embodiments, the generated aerosol may experience a temperature drop of 10° C. or more as it passes through the cooling segment and is drawn by the user. In another embodiment, the temperature may drop by 15° C. or more, and in yet another embodiment, by 20° C. or more.

The cooling segment may be formed in a rod shape with an axial length of, for example, 7 mm or more and 30 mm or less. For example, the axial length of the cooling segment may be 20 mm.

In some embodiments, the cooling segment has a substantially circular axial cross-sectional shape, preferably with a perimeter of 16 to 25 mm, more preferably 20 to 24 mm, and even more preferably 21 to 23 mm.

<Center hole segment>
The center hole segment is composed of a filling layer having one or more hollow parts and an inner plug wrapper (inner wrapping paper) covering the filling layer. For example, as shown in FIG. 3(a), the center hole segment 107 is composed of a second filling layer 115 having a hollow part and a second inner plug wrapper 116 covering the second filling layer 115. The center hole segment 107 has a function of increasing the strength of the mouthpiece segment 103. The second filling layer 115 can be, for example, a rod with an inner diameter of φ1.0 mm or more and φ5.0 mm or less, which is filled with cellulose acetate fibers at a high density and hardened by adding a plasticizer containing triacetin at 6% by mass or more and 20% by mass or less relative to the mass of cellulose acetate. Since the second filling layer 115 has a high fiber packing density, air and aerosol flow only through the hollow parts during inhalation, and hardly flow through the second filling layer 115. Since the second filling layer 115 inside the center hole segment 107 is a fiber filling layer, the feel from the outside during use is unlikely to cause discomfort to the user. Note that the center hole segment 107 may not have the second inner plug wrapper 116 and may retain its shape by thermoforming.

<Filter segment>
The configuration of the filter segment is not particularly limited, and may be composed of a single or multiple packed layers. For example, as shown in FIG. 3(a), in the filter segment 108, the outside of the first packed layer 117 may be wrapped with a first inner plug wrapper 118 (inner wrapping paper). The airflow resistance per segment of the filter segment can be appropriately changed depending on the amount and material of the filler filled in the filter segment. For example, when the filler is cellulose acetate fiber, the airflow resistance can be increased by increasing the amount of cellulose acetate fiber filled in the filter segment. When the filler is cellulose acetate fiber, the packing density of the cellulose acetate fiber can be 0.13 to 0.18 g/cm ^3. In addition, even with the same packing density, it is preferable for the thickness of the cellulose acetate fiber to be filled to be thicker in order to express a lower airflow resistance. The thickness of one cellulose acetate fiber is preferably 5 to 20 denier/filament. Furthermore, from the viewpoint of high-speed production of the filter segment, it is even more preferable that it is 7 to 13 denier/filament. The airflow resistance is a value measured using an airflow resistance measuring device (product name: SODIMAX, manufactured by SODIM).

The circumferential length of the filter segment is not particularly limited, but is preferably 16 to 25 mm, more preferably 20 to 24 mm, and even more preferably 21 to 23 mm. The axial length of the filter segment can be selected from 5 to 20 mm, and is selected so that the airflow resistance is 10 to 60 mmH ₂ O/seg. The axial length of the filter segment is preferably 5 to 9 mm, and more preferably 6 to 8 mm. The cross-sectional shape of the filter segment is not particularly limited, but can be, for example, a circle, an ellipse, a polygon, or the like. In addition, a destructible capsule containing a flavor, flavor beads, or a flavor may be directly added to the filter segment.

As shown in FIG. 3(a), the center hole segment 107 and the filter segment 108 can be connected by an outer plug wrapper (outer wrapping paper) 119. The outer plug wrapper 119 can be, for example, a cylindrical paper. The tobacco-containing segment 102, the cooling segment 106, and the connected center hole segment 107 and filter segment 108 can be connected by a mouthpiece lining paper 120. These connections can be made, for example, by applying a vinyl acetate-based glue or other adhesive to the inner surface of the mouthpiece lining paper 120, inserting the three segments, and winding them. These segments may be connected in multiple parts using multiple lining papers. As shown in FIG. 3(b), the first segment 104 may be fixed by the mouthpiece lining paper 120. Alternatively, as shown in FIG. 3( c ), the first segment 104 and the second segment 105 may be connected by an outer wrapper 134, and then the tobacco-containing segment 102, the cooling segment 106, and the already connected center hole segment 107 and filter segment 108 may be connected by a mouthpiece lining paper 120.

(Configuration of non-combustion heating type flavor inhaler)
The axial length of the non-combustion heating type flavor inhaler according to the present embodiment is not particularly limited, but is preferably 40 mm or more and 90 mm or less, more preferably 50 mm or more and 75 mm or less, and even more preferably 50 mm or more and 60 mm or less. The circumferential length of the non-combustion heating type flavor inhaler is preferably 16 mm or more and 25 mm or less, more preferably 20 mm or more and 24 mm or less, and even more preferably 21 mm or more and 23 mm or less. For example, the length of the tobacco-containing segment may be 20 mm, the length of the cooling segment may be 20 mm, the length of the center hole segment may be 8 mm, and the length of the filter segment may be 7 mm. The length of the filter segment may be selected within a range of 4 mm or more and 20 mm or less. The airflow resistance of the filter segment is selected to be 10 mmH ₂ O/seg or more and 60 mmH ₂ O/seg or less per segment. These individual segment lengths may be appropriately changed depending on the manufacturing suitability, required quality, and the like. Furthermore, even if a center hole segment is not used and only a filter segment is disposed downstream of the cooling segment, it can still function as a non-combustion heating type flavor inhaler.

[Non-combustion heating type flavor inhalation system]
The non-combustion heating type flavor inhalation system according to the present embodiment includes a non-combustion heating type flavor inhaler according to the present embodiment, and a heating device having a heater for heating the tobacco-containing segment of the non-combustion heating type flavor inhaler. Since the non-combustion heating type flavor inhalation system according to the present embodiment includes the non-combustion heating type flavor inhaler according to the present embodiment, the balance of each component supplied to the user is uniform from the first half to the second half of use. The non-combustion heating type flavor inhalation system according to the present embodiment may have other configurations than the non-combustion heating type flavor inhaler according to the present embodiment and the heating device.

An example of a non-combustion heating type flavor inhalation system according to this embodiment is shown in FIG. 7. The non-combustion heating type flavor inhalation system shown in FIG. 7 includes a non-combustion heating type flavor inhaler 101 according to this embodiment, and a heating device 127 that heats the tobacco-containing segment of the non-combustion heating type flavor inhaler 101 from the outside. FIG. 7(a) shows the state before the non-combustion heating type flavor inhaler 101 is inserted into the heating device 127, and FIG. 7(b) shows the state after the non-combustion heating type flavor inhaler 101 is inserted into the heating device 127 and heated. The heating device 127 shown in FIG. 7 includes a body 128, a heater 129, a metal tube 130, a battery unit 131, and a control unit 132. The body 128 has a cylindrical recess 133, and a heater 129 and a metal tube 130 are disposed on the inner side surface of the recess 133 at a position corresponding to the tobacco-containing segment (mainly the first segment) of the non-combustion heating type flavor inhaler 101 inserted into the recess 133. The heater 129 can be an electric resistance heater, and is heated by being supplied with power from a battery unit 131 in response to an instruction from a control unit 132 that controls temperature. The heat generated by the heater 129 is transmitted to the tobacco-containing segment (mainly the first segment) of the non-combustion heating type flavor inhaler 101 through the metal tube 130, which has high thermal conductivity.

7(b) is a schematic illustration, so there is a gap between the outer periphery of the non-combustion heating type flavor inhaler 101 and the inner periphery of the metal tube 130, but in reality, it is preferable that there is no gap between the outer periphery of the non-combustion heating type flavor inhaler 101 and the inner periphery of the metal tube 130 for the purpose of efficient heat transfer. In addition, the heating device 127 heats the tobacco-containing segment (mainly the first segment) of the non-combustion heating type flavor inhaler 101 from the outside, but it may also heat from the inside. If it heats from the inside, it is preferable to use a rigid plate-shaped, blade-shaped, or columnar heater without using the metal tube 130. Examples of such heaters include ceramic heaters in which molybdenum, tungsten, or the like is applied to a ceramic substrate.

In the non-combustion heating type flavor inhalation system according to this embodiment, the heater preferably includes a first peripheral heater that heats the entire side surface of the columnar first segment and heats a part of the side surface of the columnar second segment or does not heat the second segment. With this configuration, the heating temperature of the first segment containing the aerosol generating agent with a high boiling point (low vapor pressure) can be increased, and the heating temperature of the second segment containing the flavor component with a low boiling point (high vapor pressure) can be decreased, so that the balance of each component supplied to the user from the first half to the second half of use can be made uniform. The first peripheral heater can heat the entire side surface of the columnar first segment and heat a part of the side surface of the columnar second segment, for example, as in the heater 129 shown in FIG. 7. Note that in FIG. 7, the heater 129 heats a part of the side surface of the second segment, but the second segment does not have to be heated. In this case, the second segment is heated by heat transfer or residual heat from the first segment.

In addition, in another non-combustion heating type flavor inhalation system according to this embodiment, it is preferable that the heater includes a second peripheral heater that heats the entire side and bottom of the columnar first segment, and heats at least a part of the side of the columnar second segment, or does not heat the second segment. By configuring in this manner, it is possible to uniformly balance each component supplied to the user from the first half to the second half of use, as in the above embodiment. The second peripheral heater can heat the entire side and bottom of the columnar first segment, and heat the side of the columnar second segment, for example, as in the heater 129 shown in FIG. 8(a). Note that in FIG. 8(a), the heater 129 heats the side of the second segment, but the second segment does not have to be heated. In this case, the second segment is heated by heat transfer or residual heat from the first segment.

In addition, in another non-combustion heating type flavor inhalation system according to this embodiment, it is preferable that the heater includes an internal heater that heats the inside of the columnar first segment over the entire axial direction and heats the inside of the columnar second segment in a part of the axial direction or does not heat the second segment. By configuring in this manner, as in the above embodiment, it is possible to uniformly balance each component supplied to the user from the first half to the second half of use. The internal heater can heat the inside of the columnar first segment over the entire axial direction and not heat the columnar second segment, for example, as in the heater 129 shown in FIG. 8(b). Note that in FIG. 8(b), the heater 129 does not heat the second segment, but the inside of the second segment may be heated in a part of the axial direction.

In addition, in another non-combustion heating type flavor inhalation system according to this embodiment, the heater may be a combination of the first or second peripheral heater and the internal heater. The heater may be a combination of a peripheral heater that heats the entire side surfaces of the columnar first and second segments and an internal heater that heats the entire inside of the columnar first segment in the axial direction and does not heat the columnar second segment, for example, as in heater 129 shown in FIG. 8(c).

The heating temperature by the heater is preferably 200 to 350°C. Note that the heating temperature refers to the temperature of the heater.

[Second aspect]
This embodiment includes the following [1b] to [7b]. According to this embodiment, it is possible to provide a non-combustion heating type flavor inhaler and a non-combustion heating type flavor inhalation system that improve the delivery amount of a component generated by heating.

[1b] A rod-shaped non-combustion heat-type flavor inhaler comprising a tobacco-containing segment including the tobacco sheet for a non-combustion heat-type flavor inhaler according to the present embodiment and a mouthpiece segment,
the mouthpiece segment comprises a filter segment having a filter medium;
The non-combustion heating type flavor inhaler, wherein the filter medium has a Y-shaped circumferential cross section and is made of fibers having a single fiber denier of 8 or more and 12 or less.

[2b] The non-combustion heating type flavor inhaler according to [1b], wherein the density of the filter material is 0.09 g/ ^cm3 or more and 0.14 g/cm3 ^or less.

[3b] The non-combustion heating type flavor inhaler according to [1b] or [2b], wherein the compression change rate P of the filter medium represented by the following formula (1) is 88% or more and 95% or less.
P=(D1×100)/D2 (1)
P (%): Compression change rate D1 (mm): Diameter of the filter medium in the compression direction after compressing the filter medium under conditions of a compression load of 3 N/mm per unit length in the major axis direction and a compression time of 10 seconds so that the filter medium is deformed in a direction perpendicular to the air flow direction D2 (mm): Average diameter of the filter medium before compression

[4b] A non-combustion heating type flavor inhaler described in any of [1b] to [3b], wherein the length of the filter material in the longitudinal direction is 5 mm or more and 20 mm or less.

[5b] The non-combustion heating type flavor inhaler according to any one of [1b] to [4b], wherein the airflow resistance in the longitudinal direction of the filter segment is 1.0 mmH ₂ O/mm or more and 4.0 mmH ₂ O/mm or less.

[6b] A non-combustion heating type flavor inhaler described in any of [1b] to [5b], in which a flavor capsule is placed inside the filter material.

[7b] A non-combustion heating type flavor inhalation system comprising a heating device having a heater, a battery unit that serves as a power source for the heater, and a control unit for controlling the heater, and a non-combustion heating type flavor inhaler described in any of [1b] to [6b] that is inserted so as to come into contact with the heater.

<Non-combustion heating type flavor inhaler>
A non-combustion heating type flavor inhaler according to one embodiment of the present invention (also simply referred to as a "non-combustion heating type flavor inhaler") is a rod-shaped non-combustion heating type flavor inhaler including a tobacco-containing segment including the tobacco sheet for a non-combustion heating type flavor inhaler according to the present embodiment, and a mouthpiece segment,
the mouthpiece segment comprises a filter segment having a filter medium;
The non-combustion heating type flavor inhaler is configured such that the filter medium has a Y-shaped circumferential cross section and is made of fibers having a single fiber denier of 8 or more and 12 or less.
An example of the non-combustion heating type flavor inhaler according to this embodiment is shown in Fig. 9. Hereinafter, the non-combustion heating type flavor inhaler will be described with reference to Fig. 9.

9 is a rod-shaped non-combustion heating type flavor inhaler 210 including a tobacco-containing segment 211, a mouthpiece segment 214, and a tipping paper 215 formed by wrapping these together, the mouthpiece segment 214 including a cooling segment 212 and a filter segment 213 including a filter medium, the cooling segment 212 being sandwiched adjacent to the tobacco-containing segment 211 and the filter segment 213 in the axial direction (also referred to as the "long axis direction") of the non-combustion heating type flavor inhaler 210, and an opening V is provided concentrically in the circumferential direction of the cooling segment 212. The opening V is usually a hole for promoting the inflow of air from the outside when the user inhales, and the inflow of this air can lower the temperature of the components and air flowing in from the tobacco-containing segment 211.
In the non-combustion heating type flavor inhaler 210, components generated by heating the tobacco-containing segment 211 and the like are conveyed to the mouth of the user through the mouthpiece segment. Examples of components generated by heating include flavor components derived from flavorings, nicotine and tar derived from tobacco leaves, and aerosol components derived from an aerosol generating agent. In this specification, the aerosol generating agent is a base material for generating an aerosol.

The non-combustion heating type flavor inhaler 210 preferably has a columnar shape that satisfies an aspect ratio of 1 or more, as defined below.
Aspect ratio = h/w
w is the width of the base of the columnar body (herein, this is defined as the width of the base on the tobacco-containing segment side), and h is the height, and it is preferable that h≧w. In this specification, the long axis direction is defined as the direction indicated by h. Therefore, even if w≧h, the direction indicated by h will be referred to as the long axis direction for convenience. The shape of the base is not limited and may be a polygon, a rounded polygon, a circle, an ellipse, etc., and the width w is the diameter when the base is circular, the major axis when the base is elliptical, or the diameter of the circumscribing circle or the major axis of the circumscribing ellipse when the base is polygonal or rounded polygonal.
The length h of the non-combustion heating type flavor inhaler 210 in the major axis direction is not particularly limited, and is, for example, usually 40 mm or more, preferably 45 mm or more, and more preferably 50 mm or more. Also, it is usually 100 mm or less, preferably 90 mm or less, and more preferably 80 mm or less.
The width w of the bottom surface of the columnar body of the non-combustion heating type flavor inhaler 210 is not particularly limited, and is, for example, usually 5 mm or more, preferably 5.5 mm or more, and usually 10 mm or less, preferably 9 mm or less, and more preferably 8 mm or less.
The ratio of the lengths of the cooling segment and the filter segment in the longitudinal direction of the non-combustion heating type flavor inhaler (cooling segment:filter segment) is not particularly limited, but from the viewpoint of the delivery amount of the flavor, it is usually 0.60:1.40-1.40:0.60, 0.80-1.20:0.80-1.20, preferably 0.85-1.15:0.85-1.15, more preferably 0.90-1.10:0.90-1.10, and even more preferably 0.95-1.05:0.95-1.05.
By setting the ratio of the lengths of the cooling segment and the filter segment within the above range, the cooling effect, the effect of suppressing losses due to adhesion of the generated steam and aerosol to the inner wall of the cooling segment, and the function of adjusting the air volume and flavor of the filter are balanced to realize the effect of presenting a good flavor. In particular, if the cooling segment is made longer, the particulation of aerosols and the like is promoted to realize a good flavor, but if it is too long, the substances passing through will adhere to the inner wall.

The airflow resistance in the longitudinal direction of each non-combustion heating type flavor inhaler 210 is not particularly limited, but from the viewpoint of ease of inhalation, it is usually 8 _mmH2O or more, preferably 10 mmH2O or more, and more preferably _{12 mmH2O} or more, and is usually 100 _{mmH2O or} less, preferably 80 mmH2O or less, and more preferably 60 _mmH2O or less.
The airflow resistance is measured according to the ISO standard method (ISO6565:2015) using, for example, a filter airflow resistance measuring device manufactured by Cerulean Co., Ltd. The airflow resistance refers to the air pressure difference between the first end face and the second end face when air is flowed at a predetermined air flow rate (17.5 cc/min) from one end face (first end face) to the other end face (second end face) in a state where air does not pass through the side face of the non-combustion heating type flavor inhaler 210. The unit is generally expressed in mmH ₂ O. It is known that the relationship between the airflow resistance and the length of the non-combustion heating type flavor inhaler is proportional within the length range usually used (length 5 mm to 200 mm), and if the length is doubled, the airflow resistance of the non-combustion heating type flavor inhaler is doubled.

[Mouthpiece segment]
The mouthpiece segment 214 is equipped with a filter segment 213 having a filter medium, and is not particularly limited as long as the filter medium is composed of fibers having a Y-shaped circumferential cross section and a single fiber denier of 8 or more and 12 or less, and may be, for example, as shown in Fig. 9, an embodiment may be adopted in which the mouthpiece segment 214 includes a cooling segment 212 and a filter segment 213 including the above-mentioned filter medium, and the cooling segment 212 is sandwiched adjacent to the tobacco-containing segment 211 and the filter segment 213 in the axial direction of the non-combustion heating type flavor inhaler 210. The filter segment 213 and the cooling segment 212 will be described in detail below.

(Filter Segment)
The filter segment 213 includes a filter medium, and the filter medium is composed of fibers having a Y-shaped circumferential cross section and a single fiber denier of 8 or more and 12 or less, and is not particularly limited as long as it has a general filter function. Examples of the general functions of a filter include adjusting the amount of air mixed in when inhaling aerosols, reducing flavor, and reducing nicotine and tar, but it is not necessary for the filter to have all of these functions. In addition, in a non-combustion heating type flavor inhalation system, which tends to generate fewer components and has a lower tobacco filling rate compared to cigarette products, one of the important functions is to suppress the filtering function while preventing the tobacco filling from falling.

The shape of the filter segment 213 is not particularly limited and may be any known shape, typically a cylindrical shape, and may have the following forms:

The circumferential cross-sectional shape of the filter segment 213 is substantially circular, and the diameter of the circle can be appropriately changed according to the size of the product, but is usually 4.0 mm or more and 9.0 mm or less, preferably 4.5 mm or more and 8.5 mm or less, and more preferably 5.0 mm or more and 8.0 mm or less. If the circumferential cross-section is not circular, the above diameter is applied to a circle having the same area as the cross-sectional area, assuming that the circle has the same area as the cross-sectional area.
The circumferential length of the circumferential cross-sectional shape of the filter segment 213 can be appropriately changed according to the size of the product, but is usually 14.0 mm or more and 27.0 mm or less, preferably 15.0 mm or more and 26.0 mm or less, and more preferably 16.0 mm or more and 25.0 mm or less.
The length of the filter segment 213 in the major axis direction can be appropriately changed according to the size of the product, but is usually 15 mm or more and 35 mm or less, preferably 17.5 mm or more and 32.5 mm or less, and more preferably 20.0 mm or more and 30.0 mm or less.
The shape and dimensions of the filter medium can be adjusted as appropriate so that the shape and dimensions of the filter segment 213 are within the above-mentioned ranges, but the length in the major axis direction of the filter medium can be changed as appropriate in accordance with the size of the product. From the viewpoint of obtaining the desired hardness, the length is usually 3 mm or more and 30 mm or less, preferably 5 mm or more and 20 mm or less, more preferably 8 mm or more and 18 mm or less, and even more preferably 10 mm or more and 15 mm or less.

The airflow resistance in the longitudinal direction of the filter segment 213 is not particularly limited, but from the viewpoint of ease of inhalation, it is usually 1.0 _mmH2O /mm or more and 4.0 _mmH2O /mm or less. In particular, when the filter medium has a flavor capsule described later, from the viewpoint of ease of inhalation, it is preferably 1.5 _mmH2O /mm or more and 4.0 _mmH2O /mm or less, and in this case, when the filter medium further contains a flavoring agent described later, particularly when it contains a crystalline substance such as menthol as the flavoring agent, it is more preferably 2.5 _mmH2O /mm or more and 3.6 _mmH2O /mm or less, while when it does not contain a flavoring agent, it is more preferably 1.9 _mmH2O /mm or more and 3.0 _mmH2O /mm or less. Furthermore, when the filter medium does not have a fragrance capsule described later, from the viewpoint of ease of inhalation, it is preferable that the airflow resistance is 1.3 _mmH2O /mm or more and 2.4 _mmH2O /mm or less, regardless of whether or not a fragrance is contained. Furthermore, these conditions for the airflow resistance can also be applied as conditions for the airflow resistance in the airflow direction of the filter medium.
The airflow resistance is measured according to the ISO standard method (ISO6565), for example, using a filter airflow resistance measuring device manufactured by Cerulean Co., Ltd. The airflow resistance of the filter segment 213 refers to the air pressure difference between the first end face and the second end face when air is flowed at a predetermined air flow rate (17.5 cc/min) from one end face (first end face) to the other end face (second end face) in a state where air does not pass through the side face of the filter segment 213. The unit is generally expressed in mmH ₂ O. It is known that the relationship between the airflow resistance of the filter segment 213 and the length of the filter segment 213 is proportional within the length range usually used (lengths of 5 mm to 200 mm), and if the length is doubled, the airflow resistance of the filter segment 213 doubles.

In addition, the form of the filter segment 213 may be a plain filter including a single filter segment, or a multi-segment filter including multiple filter segments, such as a dual filter or triple filter.

The filter segment 213 can be produced by a known method, for example, when a synthetic fiber such as cellulose acetate tow is used as the material of the filter medium, the filter segment 213 can be produced by a method of spinning a polymer solution containing a polymer and a solvent and crimping the polymer solution. For example, the method described in International Publication No. 2013/067511 can be used as the method.
In manufacturing the filter segment 213, the adjustment of the airflow resistance and the addition of additives (known adsorbents and flavors (e.g., menthol), granular activated carbon, flavor retention materials, etc.) to the filter medium can be appropriately designed.

The filter medium constituting the filter segment 213 is not particularly limited as long as it is composed of fibers having a Y-shaped circumferential cross section and a single fiber denier of 8 or more and 12 or less. For example, a tow such as cellulose acetate tow composed of fibers having a Y-shaped circumferential cross section and processed into a cylindrical shape can be used.
The circumferential cross-sectional shape of the fibers constituting the tow is Y-shaped. When a tow having a Y-shaped fiber shape is used, the fiber shape is more complex than when a tow having a general fiber shape such as a circular shape is used, so that a filter segment having an excellent delivery amount is more likely to be obtained. In particular, a filter segment having a high component delivery amount and a desired hardness can be produced with a small amount of use, that is, while suppressing costs.
From the viewpoint of improving the delivery amount of the components generated by heating, the single fiber denier (g/9000m) of the fiber is not particularly limited as long as it is 8 or more and 12 or less, and may be 9 or more and 11 or less. If the single fiber denier of the fiber is below the above range, the structure of the fibers constituting the filter medium becomes too dense, so the delivery amount of the components decreases, and if it exceeds the above range, the structure of the fibers constituting the filter medium becomes too sparse, so sufficient hardness cannot be obtained. The total fiber denier (g/9000m) of the fiber is not particularly limited, but from the viewpoint of improving the delivery amount of the components generated by heating, the total fiber denier may be 12000 or more and 35000 or less, and preferably 15000 or more and 30000 or less. These single fiber denier and total fiber denier are particularly preferred when the circumference of the mouthpiece segment is 22 mm. In the case of a filter filled with fibers, triacetin may be added at 5% by weight or more and 10% by weight or less to the total fiber weight to improve the filter hardness.
The method for producing a fiber having a Y-shaped cross section in the circumferential direction is not particularly limited, but for example, in the case of acetate fiber, acetate flakes (cellulose acetate) are produced through acetylation of pulp raw material, and then the acetate flakes are dissolved in acetone in a dissolver (dope) and spun to produce a fibrous bundle, and in this spinning process, the cross section in the circumferential direction can be made Y-shaped by changing the shape of the nozzle die, and the fiber thickness (filament denier) can be changed by changing the nozzle hole diameter. Then, the total denier is determined according to the required air resistance, and the number of bundled yarns (total denier/filament denier) is determined accordingly, and the spun acetate fiber is spun using the required number of spinning chambers, and the spun and bundled acetate fiber is given a uniform wave shape (crimp) in a crimping machine, and the tow flowing in a ribbon shape can be layered and packaged in a packaging machine while being twisted.

The density of the filter medium (particularly in the case where the filter medium contains a fragrance capsule described below, the density excluding the fragrance capsule) is not particularly limited, but from the viewpoint of obtaining the desired hardness, the density is usually 0.09 g/cm3 or ^more and 0.25 g/cm3 or ^less , preferably 0.09 g/cm3 or ^more and 0.20 g/cm3 or ^less , more preferably 0.09 g/cm3 or ^more and 0.14 g/cm3 or ^less , and even more preferably 0.11 g/cm3 or ^more and 0.14 g/ ^cm3 or less.

The compression change rate P of the filter medium represented by the following formula (1) is one of the indicators representing hardness, and is not particularly limited, but from the viewpoint of obtaining the desired hardness, it is usually 85% or more and 98% or less, preferably 88% or more and 95% or less, and more preferably 90% or more and 93% or less. The method for measuring this compression change rate P is not particularly limited, but it can be measured using, for example, the SODIM-H Hardness module manufactured by Sodim SAS, and the numerical value can be adjusted by changing the density or material of the filter medium.
P=(D1×100)/D2 (1)
P (%): compression change rate D1 (mm): diameter of the filter medium in the compression direction after the filter medium is compressed under conditions of a compression load of 3 N/mm per unit length in the major axis direction and a compression time of 10 seconds, so that the filter medium is deformed in a direction perpendicular to the air passage direction (the circumferential direction in the case of a cylindrical shape) D2 (mm): average diameter of the filter medium before compression Furthermore, the compression change rate is one of the indicators of the hardness of the filter medium, and therefore in this specification, the compression change rate is also referred to as "hardness".

The filter medium may also contain a flavoring material or other ingredient in addition to the flavor capsule described later, and examples of the flavoring agent include menthol, spearmint, peppermint, fenugreek, clove, medium chain triglyceride (MCT), etc., with menthol being preferred. These ingredients may be used alone or in any combination of two or more kinds and in any ratio.
The content of the flavoring agent (particularly menthol) in the filter medium (excluding the flavoring agent in the fragrance capsule described below) is not particularly limited, and is usually 0.5% by weight or more and 15% by weight or less, preferably 3% by weight or more and 10% by weight or less, and more preferably 10% by weight or more and 5% by weight or less.

The filter medium may have a crushable additive release container (e.g., flavor capsule) disposed therein, which includes a crushable shell such as gelatin. The flavor capsule (also referred to as "additive release container" in the art) may have any known form, for example, a crushable additive release container including a crushable shell such as gelatin. In this case, when the flavor capsule is broken by the user of the flavor inhaler before, during, or after use, it releases the liquid or substance (usually a flavoring agent) contained in the flavor capsule, which is then transferred to tobacco smoke while the flavor inhaler is in use, and transferred to the surrounding environment after use.
The form of the flavor capsule is not particularly limited, and may be, for example, a frangible flavor capsule, and its shape is preferably a sphere.The additive contained in the flavor capsule may include any of the additives described above, and preferably includes flavorings and activated carbon.In addition, one or more materials that help filter smoke may be added as the additive.The form of the additive is not particularly limited, and is usually liquid or solid.The use of capsules containing additives is well known in the art.Frangible flavor capsules and their manufacturing methods are well known in the art.
The flavoring agent may be, for example, menthol, spearmint, peppermint, fenugreek, or clove, medium chain triglycerides (MCT), etc. The flavoring agent may be menthol, or menthol, etc., or combinations thereof.
When a fragrance capsule is used, if the single fiber denier of the fibers constituting the above-mentioned filter medium exceeds the upper limit of the above-mentioned range, the ingredients released from the fragrance capsule will not spread sufficiently onto the filter, and if it is below the lower limit, the spread of the ingredients onto the filter will be promoted too much, so that the amount of ingredient delivery will be excessively suppressed.

From the viewpoint of improving strength and structural rigidity, the filter segment 213 may be provided with a wrapper (filter plug wrapper) for wrapping the above-mentioned filter medium and the like. The form of the wrapper is not particularly limited, and may include one or more rows of seams containing adhesive. The adhesive may include a hot melt adhesive, and the hot melt adhesive may further include polyvinyl alcohol. In addition, when the filter segment is composed of two or more segments, it is preferable that the wrapper wraps these two or more segments together.
The material of the wrapper is not particularly limited, and any known material can be used, which may contain a filler such as calcium carbonate.
The thickness of the wrapper is not particularly limited, and is usually from 20 μm to 140 μm, preferably from 30 μm to 130 μm, and more preferably from 30 μm to 120 μm.
The basis weight of the roll is not particularly limited, and is usually from 20 gsm to 100 gsm, preferably from 22 gsm to 95 gsm, and more preferably from 23 gsm to 90 gsm.
Furthermore, the wrapper may be either coated or uncoated, but is preferably coated with a desired material from the standpoint of imparting functions other than strength and structural rigidity.

The filter segment 213 may further include a center hole segment having one or more hollow portions. The center hole segment is usually disposed closer to the cooling segment than the filter medium, and preferably adjacent to the cooling segment.

The center hole segment is composed of a filling layer having one or more hollow parts and an inner plug wrapper (inner wrapping paper) that covers the filling layer. For example, the center hole segment is composed of a filling layer having a hollow part and an inner plug wrapper that covers the filling layer. The center hole segment has a function of increasing the strength of the mouthpiece segment. The filling layer can be, for example, a rod with an inner diameter of φ1.0 mm or more and φ5.0 mm or less, in which cellulose acetate fibers are densely packed and a plasticizer containing triacetin is added to the cellulose acetate mass at 6% by mass or more and 20% by mass or less, and hardened. Since the filling layer has a high fiber packing density, air and aerosol flow only through the hollow parts during inhalation and hardly flow inside the filling layer. Since the filling layer inside the center hole segment is a fiber packing layer, the touch from the outside during use is less likely to cause discomfort to the user. The center hole segment may not have an inner plug wrapper and its shape may be maintained by thermoforming.

The center hole segment and the filter medium may be connected, for example, by an outer plug wrapper (outer winding paper). The outer plug wrapper may be, for example, a cylindrical paper. The tobacco-containing segment 211, the cooling segment 212, and the connected center hole segment and filter medium may be connected, for example, by a mouthpiece lining paper. These connections can be made, for example, by applying a glue such as a vinyl acetate glue to the inner surface of the mouthpiece lining paper, and then inserting and winding the tobacco-containing segment 211, the cooling segment 212, and the connected center hole segment and filter medium. These may be connected in multiple separate instances using multiple lining papers.

(Cooling segment)
The cooling segment 212 is sandwiched adjacent to the tobacco-containing segment and the filter segment, and is usually a rod-shaped member having a cavity such that the cross section in the circumferential direction is hollow (hollow), such as a cylinder.
The cooling segment 212 may be provided with openings V (also referred to in the art as "ventilation filters (Vf)") in the circumferential direction and concentrically therewith.
When an aerosol generating agent is used in the tobacco-containing segment, vapor containing the aerosol generating agent and tobacco flavor components generated by heating the tobacco rod is liquefied when it comes into contact with air from the outside and its temperature drops, thereby accelerating the generation of an aerosol.
Furthermore, when the concentrically arranged holes V are treated as one hole group, the hole group may be one or may be two or more. When two or more hole groups are present, from the viewpoint of improving the delivery amount of the component generated by heating, it is preferable that no hole group is provided in a region less than 4 mm from the boundary between the cooling segment and the filter segment toward the cooling segment.
Furthermore, when the non-combustion heating type flavor inhaler 210 is configured such that the tobacco-containing segment 211, the cooling segment 212, and the filter segment 213 are wound with tipping paper 215, it is preferable that the tipping paper 215 has an opening at a position directly above the opening V provided in the cooling segment 212. When producing such a non-combustion heating type flavor inhaler 210, the tipping paper 215 may be prepared and wound with an opening that overlaps with the opening V, but from the viewpoint of ease of production, it is preferable to produce the non-combustion heating type flavor inhaler 210 using the cooling segment 212 that does not have the opening V, and then to open a hole that penetrates both the cooling segment 212 and the tipping paper 215 at the same time.

From the viewpoint of improving the delivery amount of the component generated by heating, the region in which the opening V exists is preferably a region of 4 mm or more in the direction toward the cooling segment from the boundary between the cooling segment 212 and the filter segment 213, more preferably a region of 4.5 mm or more, even more preferably a region of 5 mm or more, and particularly preferably a region of 5.5 mm or more; from the viewpoint of ensuring the cooling function, it is preferably a region of 15 mm or less, more preferably a region of 10 mm or less, and even more preferably a region of 7 mm or less.
From the viewpoint of improving the delivery amount of the component generated by heating, the region where the opening V is present is preferably a region of 22 mm or more from the suction mouth end of the non-combustion heating type flavor inhaler toward the cooling segment, preferably a region of 23.5 mm or more, preferably a region of 24 mm or more, and more preferably a region of 25 mm or more; and from the viewpoint of ensuring the cooling function, it is preferably a region of 38 mm or less, more preferably a region of 36.5 mm or less, and even more preferably a region of 33 mm or less.
Furthermore, when considering the boundary between the cooling segment 212 and the tobacco-containing segment 211 as a reference, when the axial length of the cooling segment 212 is 20 mm or more, from the viewpoint of ensuring the cooling function, the region in which the opening V exists is preferably a region of 2 mm or more in the direction from the boundary between the cooling segment 212 and the tobacco-containing segment 211 toward the cooling segment side, more preferably a region of 3.5 mm or more, and even more preferably a region of 7 mm or more, and from the viewpoint of improving the delivery amount of the components generated by heating, it is preferably a region of 18 mm or less, more preferably a region of 16.5 mm or less, even more preferably a region of 15 mm or less, and particularly preferably a region of 14.5 mm or less.

The diameter of the opening V is not particularly limited, but is preferably 100 μm or more and 1000 μm or less, and more preferably 300 μm or more and 800 μm or less. The opening is preferably approximately circular or approximately elliptical, and in the case of an approximately elliptical shape, the diameter represents the major axis.

The length of the cooling segment in the major axis direction can be appropriately changed according to the size of the product, but is usually 15 mm or more, preferably 20 mm or more, and usually 40 mm or less, preferably 35 mm or less, and more preferably 30 mm or less. By setting the length of the cooling segment in the major axis direction to the above lower limit or more, a sufficient cooling effect can be ensured to obtain a good flavor, and by setting it to the above upper limit or less, losses due to the generated steam and aerosol adhering to the inner wall of the cooling segment can be suppressed.
When the cooling segment 212 is filled with a cooling sheet or the like for cooling, the total surface area of the cooling segment 212 is not particularly limited and may be, for example, 150 mm ² /mm or more and 1000 mm ² /mm or less. This surface area is the surface area per mm of the length (mm) in the air passage direction of the cooling segment 212. The total surface area of the cooling segment 212 is preferably 200 mm ² /mm or more, more preferably 250 mm ² /mm or more, while it is preferably 600 mm ² /mm or less, and more preferably 400 mm ² /mm or less.

It is desirable for the cooling segment 212 to have a large total surface area for its internal structure. Thus, in a preferred embodiment, the cooling segment 212 may be formed by a thin sheet of material that is wrinkled to form channels, and then pleated, gathered, and folded. The more folds or pleats within a given volume of the element, the greater the total surface area of the cooling segment.

The thickness of the constituent material of the cooling segment 212 is not particularly limited and may be, for example, 5 μm or more and 500 μm or less, or 10 μm or more and 250 μm or less.

[Tobacco-containing segment]
The form of the tobacco-containing segment 211 is not particularly limited as long as it includes the tobacco sheet for a non-combustion heating-type flavor inhaler according to this embodiment, but it can be a form in which a tobacco filler containing a tobacco sheet is wrapped in cigarette paper. The tobacco filler may contain an aerosol generating agent. The aerosol generating agent is a base material that generates an aerosol when heated, and examples of the aerosol generating agent include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.
The content of the aerosol generating agent in the tobacco filling is not particularly limited, but from the viewpoint of generating sufficient aerosol and imparting a good flavor, it is usually at least 5% by weight, preferably at least 10% by weight, and usually at most 50% by weight, preferably at least 15% by weight and at most 25% by weight, relative to the total amount of the tobacco filling.

Furthermore, the tobacco-containing segment 211 may have a fitting portion for a heater or the like for heating a non-combustion heating type flavor inhaler.
The tobacco-containing segment 211, which is composed of a tobacco filler wrapped in cigarette paper, preferably has a cylindrical shape, and in this case, it is preferable that the aspect ratio represented by the height of the tobacco-containing segment 211 in the longitudinal direction relative to the width of the base of the tobacco-containing segment 211 is 1 or more.
The shape of the bottom surface is not limited and may be polygonal, rounded polygonal, circular, elliptical, etc., and the width is the diameter when the bottom surface is circular, the major axis when the bottom surface is elliptical, and the diameter of the circumscribing circle or the major axis of the circumscribing ellipse when the bottom surface is polygonal or rounded polygonal. The height of the tobacco filler constituting the tobacco-containing segment 211 is preferably about 10 to 70 mm, and the width is preferably about 4 to 9 mm.

The length of the tobacco-containing segment 211 in the longitudinal direction may be changed appropriately according to the size of the product, but is usually 10 mm or more, preferably 12 mm or more, more preferably 15 mm or more, and even more preferably 18 mm or more, and is usually 70 mm or less, preferably 50 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less. In addition, the ratio of the length of the tobacco-containing segment 211 to the longitudinal length h of the non-combustion heating type flavor inhaler 210 is usually 10% or more, preferably 20% or more, more preferably 25% or more, and even more preferably 30% or more, from the viewpoint of the balance between the delivery amount and the aerosol temperature, and is usually 60% or less, preferably 50% or less, more preferably 45% or less, and even more preferably 40% or less.

(Scrolling paper)
The composition of the cigarette paper is not particularly limited and may be a common embodiment, for example, a cigarette paper mainly composed of pulp. The pulp may be made from wood pulp such as softwood pulp or hardwood pulp, or may be made by mixing with non-wood pulp generally used in cigarette papers for tobacco products, such as flax pulp, hemp pulp, sisal pulp, or esparto.
As the type of pulp, chemical pulp produced by the kraft cooking method, acidic/neutral/alkaline sulfite cooking method, soda salt cooking method, etc., ground pulp, chemi-ground pulp, thermomechanical pulp, etc. can be used.

The above pulp is used in the papermaking process using a Fourdrinier papermaking machine, a cylinder papermaking machine, a combined cylinder and short-circuit papermaking machine, etc., to adjust and homogenize the texture of the paper to produce a cigarette paper. If necessary, a wet strength agent can be added to impart water resistance to the cigarette paper, or a sizing agent can be added to adjust the printing condition of the cigarette paper. In addition, papermaking internal additives such as aluminum sulfate, various anionic, cationic, nonionic, or amphoteric retention improvers, drainage improvers, and paper strength enhancers, as well as papermaking additives such as dyes, pH adjusters, defoamers, pitch control agents, and slime control agents can be added.

The basis weight of the cigarette paper base paper is, for example, usually 20 gsm or more, preferably 25 gsm or more, whereas the basis weight is usually 65 gsm or less, preferably 50 gsm or less, more preferably 45 gsm or less.
The thickness of the cigarette paper having the above-mentioned characteristics is not particularly limited, and from the viewpoints of rigidity, breathability, and ease of adjustment during papermaking, it is usually 10 μm or more, preferably 20 μm or more, and more preferably 30 μm or more, and is usually 100 μm or less, preferably 75 μm or less, and more preferably 50 μm or less.
The shape of the wrapping paper for the non-combustion heating type flavor inhaler may be, for example, square or rectangular.
When used as cigarette paper for wrapping a tobacco filler (to produce a tobacco-containing segment), the length of one side can be about 12 to 70 mm, and the length of the other side can be 15 to 28 mm, with the preferred length of the other side being 22 to 24 mm, and more preferably about 23 mm. When wrapping a tobacco filler in cigarette paper in a cylindrical shape, for example, the end of the cigarette paper in the w direction and the end on the opposite side are overlapped by about 2 mm and glued together to form a cylindrical paper tube shape in which the tobacco filler is filled. The size of the rectangular cigarette paper can be determined depending on the size of the completed tobacco-containing segment 211.
When the tobacco-containing segment 211 and other components adjacent to the tobacco-containing segment 211 are connected and wound together, such as with tipping paper, the length of one side may be 20 to 60 mm and the length of the other side may be 15 to 28 mm.

In addition to the pulp, the cigarette paper may contain a filler. The content of the filler is, for example, 10% by weight or more and less than 60% by weight, preferably 15% by weight or more and 45% by weight or less, based on the total weight of the cigarette paper.
In the cigarette paper, within the preferred range of basis weight (25 gsm or more and 45 gsm or less), the filler content is preferably 15% by weight or more and 45% by weight or less.
Furthermore, when the basis weight is 25 gsm or more and 35 gsm or less, the filler is preferably 15 wt% or more and 45 wt% or less, and when the basis weight is more than 35 gsm and 45 gsm or less, the filler is preferably 25 wt% or more and 45 wt% or less.
As the filler, calcium carbonate, titanium dioxide, kaolin, etc. can be used, but it is preferable to use calcium carbonate from the viewpoint of enhancing flavor and whiteness.

Various auxiliaries other than the base paper and fillers may be added to the cigarette paper. For example, a water resistance improver may be added to improve water resistance. The water resistance improver includes a wet strength agent (WS agent) and a sizing agent. Examples of the wet strength agent include urea formaldehyde resin, melamine formaldehyde resin, polyamide epichlorohydrin (PAE), etc. Examples of the sizing agent include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), highly saponified polyvinyl alcohol with a saponification degree of 90% or more, etc.
As an auxiliary, a paper strength enhancer may be added, for example, polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resin, polyvinyl alcohol, etc. In particular, it is known that the use of a very small amount of oxidized starch improves the air permeability (JP 2017-218699 A).
The wrapping paper may also be appropriately coated.

A coating agent may be added to at least one of the two surfaces of the wrapping paper, the front and back. There are no particular limitations on the coating agent, but a coating agent that can form a film on the surface of the paper and reduce liquid permeability is preferred. Examples include alginic acid and its salts (e.g., sodium salts), polysaccharides such as pectin, cellulose derivatives such as ethyl cellulose, methyl cellulose, carboxymethyl cellulose, and nitrocellulose, starch and its derivatives (e.g., ether derivatives such as carboxymethyl starch, hydroxyalkyl starch, and cationic starch, and ester derivatives such as starch acetate, starch phosphate, and starch octenyl succinate).

[Tip paper]
The configuration of the tipping paper 215 is not particularly limited and may be a general embodiment, for example, one containing pulp as a main component. The pulp may be made from wood pulp such as softwood pulp or hardwood pulp, or may be made by mixing non-wood pulp generally used in cigarette papers for tobacco products, such as flax pulp, hemp pulp, sisal pulp, or esparto. These pulps may be used alone or in combination in any ratio.
Furthermore, the tipping paper 215 may be made up of one sheet, but may also be made up of multiple or more sheets.
As the form of pulp, chemical pulp by the kraft cooking method, acidic/neutral/alkaline sulfite cooking method, soda salt cooking method, etc., ground pulp, chemi-ground pulp, thermomechanical pulp, etc. can be used.
The tipping paper 215 may be produced by the production method described below, or may be a commercially available product.
The shape of the tipping paper 215 is not particularly limited and can be, for example, square or rectangular.

The basis weight of the tipping paper 215 is not particularly limited, but is usually 32 gsm or more and 40 gsm or less, preferably 33 gsm or more and 39 gsm or less, and more preferably 34 gsm or more and 38 gsm or less.
The air permeability of the tipping paper 215 is not particularly limited, but is usually 0 Coresta units or more and 30,000 Coresta units or less, and preferably more than 0 Coresta units and 10,000 Coresta units or less. Air permeability is a value measured in accordance with ISO 2965:2009, and is expressed as the flow rate (cm ³ ) of gas passing through an area of 1 cm ² per minute when the differential pressure between both sides of the paper is 1 kPa. 1 Coresta unit (1 Coresta unit, 1 C.U.) is cm ³ /(min·cm ² ) under 1 kPa.

In addition to the pulp, the chip paper 215 may contain fillers, such as metal carbonates such as calcium carbonate and magnesium carbonate, metal oxides such as titanium oxide, titanium dioxide and aluminum oxide, metal sulfates such as barium sulfate and calcium sulfate, metal sulfides such as zinc sulfide, quartz, kaolin, talc, diatomaceous earth, gypsum, etc., and it is particularly preferable that the chip paper 215 contains calcium carbonate from the viewpoint of improving whiteness and opacity and increasing the heating rate. Furthermore, these fillers may be used alone or in combination of two or more types.

In addition to the above pulp and fillers, various auxiliary agents may be added to the chip paper 215. For example, the chip paper 215 may have a water resistance improver to improve the chip paper 215. The water resistance improver includes a wet strength agent (WS agent) and a sizing agent. Examples of wet strength agents include urea formaldehyde resin, melamine formaldehyde resin, polyamide epichlorohydrin (PAE), etc. Examples of sizing agents include rosin soap, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), and highly saponified polyvinyl alcohol with a saponification degree of 90% or more.

A coating agent may be added to at least one of the two surfaces, the front and back surfaces, of the tipping paper 215. There are no particular limitations on the coating agent, but a coating agent that can form a film on the surface of the paper and reduce liquid permeability is preferred.

The configuration of the non-combustion heating type flavor inhaler in this embodiment can be used in the non-combustion heating type flavor inhalation system described below, but can also be applied to cigarettes (paper cigarettes) that involve combustion.

[Method for manufacturing a non-combustion heating type flavor inhaler]
The manufacturing method of the non-combustion heating type flavor inhaler described above is not particularly limited, and any known method can be applied. For example, the non-combustion heating type flavor inhaler can be manufactured by wrapping the tobacco-containing segment and the mouthpiece segment in tip paper.

<Non-combustion heating type flavor inhalation system>
A non-combustion heating type flavor inhalation system according to another embodiment of the present invention (also simply referred to as a "non-combustion heating type flavor inhalation system") is a non-combustion heating type flavor inhalation system comprising a heating device including a heater, a battery unit serving as a power source for the heater, and a control unit for controlling the heater, and the above-mentioned non-combustion heating type flavor inhaler that is inserted so as to come into contact with the heater.
The non-combustion heating type flavor inhalation system may be configured to heat the outer peripheral surface of the non-combustion heating type flavor inhaler 210 as shown in Fig. 10, or may be configured to heat from the inside of the tobacco-containing segment 211 in the non-combustion heating type flavor inhaler 210 as shown in Fig. 11. Note that the heating device 220 shown in Figs. 10 and 11 is provided with an air introduction hole, but this is not shown here. Hereinafter, the non-combustion heating type flavor inhalation system 230 will be described with reference to Fig. 11. Note that for the non-combustion heating type flavor inhaler 210 in Figs. 10 and 11, some of the reference numerals representing the components shown in Figs. 10 and 11 will be omitted.
The non-combustion heating type flavor inhalation system 230 is used by inserting the non-combustion heating type flavor inhaler 210 described above into contact with the heater 221 arranged inside the heating device 220.
The heating device 220 has a battery unit 222 and a control unit 223 inside a body 224 made of, for example, resin.
When the non-combustion heating type flavor inhaler 210 is inserted into the heating device 220, the outer surface of the tobacco-containing segment 211 comes into contact with the heater 221 of the heating device 220, and eventually the entire outer surface of the tobacco-containing segment 211 and a portion of the outer surface of the tipping paper come into contact with the heater 221.
The heater 221 of the heating device 220 generates heat under the control of the control unit 223. The heat is transmitted to the tobacco-containing segment 211 of the non-combustion heating type flavor inhaler 210, causing the aerosol generating agent, flavor components, and the like contained in the tobacco filler of the tobacco-containing segment 211 to volatilize.

The heater 221 may be, for example, a sheet heater, a flat heater, or a cylindrical heater. The sheet heater is a flexible sheet-shaped heater, and examples thereof include a heater including a film (thickness: about 20 μm to 225 μm) of a heat-resistant polymer such as polyimide. The flat heater is a rigid flat heater (thickness: about 200 μm to 500 μm), and examples thereof include a heater having a resistance circuit on a flat substrate and using that part as a heat generating part. The cylindrical heater is a hollow or solid cylindrical heater (thickness: about 200 μm to 500 μm), and examples thereof include a heater having a resistance circuit on the outer circumferential surface of a metal cylinder and using that part as a heat generating part. In addition, examples thereof include a rod-shaped heater and a cone-shaped heater made of metal or the like that have a resistance circuit inside and use that part as a heat generating part. The circumferential cross-sectional shape of the cylindrical heater may be a circle, an ellipse, a polygon, a rounded polygon, or the like.
In the case of an embodiment in which the outer peripheral surface of the non-combustion heating type flavor inhaler 210 is heated as shown in Fig. 10, the above-mentioned sheet-shaped heater, flat plate heater, and cylindrical heater can be used. On the other hand, in the case of an embodiment in which the tobacco-containing segment 11 in the non-combustion heating type flavor inhaler 210 is heated from the inside as shown in Fig. 11, the above-mentioned flat plate heater, column heater, and cone heater can be used.
The length of the heater 221 in the major axis direction can be within the range of L±5.0 mm, where the length of the tobacco-containing segment 211 in the major axis direction is L mm. From the viewpoint of sufficiently transferring heat to the tobacco-containing segment 211 and sufficiently volatilizing the aerosol generating agent and flavor components contained in the tobacco filling, i.e., from the viewpoint of aerosol delivery, the length of the heater 221 in the major axis direction is preferably L mm or more, and from the viewpoint of suppressing the generation of components that have an undesirable effect on the flavor, etc., the length is preferably L+0.5 mm or less, L+1.0 mm or less, L+1.5 mm or less, L+2.0 mm or less, L+2.5 mm or less, L+3.0 mm or less, L+3.5 mm or less, L+4.0 mm or less, L+4.5 mm or less, or L+5.0 mm or less.

The heating intensity, such as the heating time and heating temperature of the non-combustion heating type flavor inhaler 210 by the heater 221, can be preset for each non-combustion heating type flavor inhalation system 230. For example, by performing pre-heating for a certain period of time after inserting the non-combustion heating type flavor inhaler 210 into the heating device 220, the temperature of the outer circumferential surface of the portion of the non-combustion heating type flavor inhaler 210 inserted into the heating device 220 reaches X (°C), and thereafter, the temperature can be preset to be maintained at a constant temperature of X (°C) or less.
From the viewpoint of the delivery amount of components generated by heating, the above X (°C) is preferably 80°C or more and 400°C or less. Specifically, it can be 80°C, 90°C, 100°C, 110°C, 120°C, 130°C, 140°C, 150°C, 160°C, 170°C, 180°C, 190°C, 200°C, 210°C, 220°C, 230°C, 240°C, 250°C, 260°C, 270°C, 280°C, 290°C, 300°C, 310°C, 320°C, 330°C, 340°C, 350°C, 360°C, 370°C, 380°C, 390°C, or 400°C.
When heated by the heater 221, vapor containing components derived from the aerosol generating agent and components derived from flavor components is generated from the tobacco-containing segment 211 and reaches the user's oral cavity through the mouthpiece segment 214, which is composed of a cooling segment 212, a filter segment 213, etc.

From the viewpoint of promoting the inflow of air from the outside and suppressing the retention of components and air generated by heating in the cooling segment 212, it is preferable that the opening V provided in the cooling segment 212 is located closer to the suction end than the end of the region in contact with the heating device 220 (the point indicated by the arrow X in the figure) in the cooling segment 212, as shown in FIG. 12. In addition, the insertion port of the non-combustion heating type flavor inhaler 210 of the heating device 220 may be tapered as shown in FIG. 13 to make it easier to insert the non-combustion heating type flavor inhaler 210. In this case, the end of the region in contact with the heating device 220 on the suction end side is the position indicated by the arrow Y in the figure. Note that, for the non-combustion heating type flavor inhaler 210 in FIGS. 12 and 13, some of the symbols representing the components shown in FIGS. 9 to 11 are omitted.

[Third aspect]
This embodiment includes the following [1c] to [13c]. According to this embodiment, it is possible to provide a non-combustion heating type flavor inhaler including a tobacco-containing segment that has an excellent balance between suppression of breakage and heat transfer efficiency.

[1c] A tobacco-containing segment including the tobacco sheet for a non-combustion heating-type flavor inhaler according to the present embodiment;
an abutment member adjacent the tobacco-containing segment;
a wrapping material for wrapping the tobacco-containing segment, or a wrapping material for wrapping the tobacco-containing segment and an adjacent member;
A non-combustion heating type flavor inhaler comprising:
The wrapping material has a high heat transfer portion having a higher heat transfer property than the wound member in contact therewith,
The non-combustion heating type flavor inhaler, wherein the high heat transfer portion wraps around the vicinity of the downstream end of the tobacco-containing segment.

[2c] A non-combustion heating type flavor inhaler described in [1c], in which the high heat transfer portion is wrapped from near the downstream end of the tobacco-containing segment to near the upstream end of the adjacent member.

[3c] A non-combustion heating type flavor inhaler described in [1c] or [2c], wherein the wrapping material is tipping paper that connects the tobacco-containing segment and the adjacent member.

[4c] A non-combustion heating type flavor inhaler described in [1c], wherein the wrapping material is wrapping paper that directly wraps the tobacco sheet in the tobacco-containing segment.

[5c] The high heat transfer portion is made of a material that satisfies the heat transfer characteristics of formula (1),
Q _dT ≧330 (W/℃)...(1)
Here, Q _dT is the heat transfer coefficient calculated based on a cylindrical sample and defined by the following formula:
Q _dT = K×2πL/ln(r ₂ /r ₁ )
K = Thermal conductivity coefficient (W/m/°C)
L = axial length of sample (mm)
_r2 = outer radius of sample (mm)
r ₁ = inner radius of sample (mm)
The non-combustion heating type flavor inhaler according to any one of [1c] to [4c].

[6c] A non-combustion heating type flavor inhaler described in any of [1c] to [5c], wherein the high heat transfer portion is present in a portion of the tobacco-containing segment that is heated by a heater.

[7c] A non-combustion heating type flavor inhaler described in any of [1c] to [6c], wherein the vicinity of the downstream end of the tobacco-containing segment is a region starting from the downstream end and ending at a position that is 5 to 50% of the axial length of the tobacco-containing segment.

[8c] A non-combustion heating type flavor inhaler described in any of [2c], [3c], or [5c] to [7c], wherein the vicinity of the upstream end of the adjacent member is a region starting from the upstream end and ending at a position that is 1 to 15% of the axial length of the adjacent member.

[9c] A non-combustion heating type flavor inhaler described in any of [1c] to [8c], wherein the axial length of the high heat transfer portion is 3 to 10 mm.

[10c] A non-combustion heating type flavor inhaler described in any of [1c] to [9c], wherein the high heat transfer part contains a metal selected from the group consisting of aluminum, stainless steel, gold, silver, and combinations thereof.

[11c] A non-combustion heating type flavor inhaler described in any of [1c] to [10c], wherein the high heat transfer section comprises paper and the metal particles or metal sheet supported on the paper.

[12c] A non-combustion heating type flavor inhaler described in any of [1c] to [11c], wherein the adjacent member is a cooling member.

[13c] A non-combustion heating type flavor inhaler according to any one of [1c] to [12c],
a heating device including a heater for heating a portion of the tobacco-containing segment of the non-combustion heating type flavor inhaler that is wrapped with the high heat transfer portion;
A non-combustion heating type flavor inhalation system comprising:

1. Non-combustion heating type flavor inhaler Figure 18 shows one embodiment of a non-combustion heating type flavor inhaler of this embodiment. In the figure, 310 is a non-combustion heating type flavor inhaler, 301 is a tobacco-containing segment, 303 is an adjacent member (preferably a cooling member) adjacent to the tobacco-containing segment, 305 is a mouthpiece, 352 is a filter, 354 is a center hole filter, 307 is tipping paper, 309 is a wrapping material, and V is ventilation. The embodiment shown in Figure 18 is also called a non-combustion direct heating type flavor inhaler because the tobacco sheet is directly heated.

(1) Tobacco-containing segment The tobacco-containing segment includes the tobacco sheet according to this embodiment, and is a substantially cylindrical member for generating the flavor and aroma components contained in the tobacco sheet. The tobacco-containing segment includes a tobacco sheet and a cigarette paper (wrapper) wrapping the tobacco sheet. The shape of the tobacco sheet filled in the cigarette paper is not limited, and examples thereof include the sheet itself, or the sheet cut into a width of 0.8 to 1.2 mm. The tobacco-containing segment may be formed by gathering, folding, or spiraling the sheet without cutting it into a cigarette paper. Alternatively, the tobacco-containing segment may be formed by cutting the sheet into strips and filling the cigarette paper with these in a concentric manner or with the longitudinal direction of the strips parallel to the longitudinal direction of the tobacco-containing segment.

The filling density of the tobacco sheet is not particularly limited, but from the viewpoint of ensuring the characteristics of the non-combustion heating type flavor inhaler and imparting a good smoking taste, it is usually 250 mg/ ^cm3 or more, and preferably 320 mg/cm3 or ^more . The upper limit is usually 800 mg/cm3 or ^less , and preferably 600 mg/cm3 or ^less . The length of the tobacco-containing segment 301 is not limited, but is preferably 15 to 25 mm. The diameter is also not limited, but is preferably 6 to 8 mm.

The tobacco sheet may generate steam when heated. The heating temperature is not limited, but is about 30 to 350°C. To promote the generation of aerosol, an aerosol source such as glycerin, propylene glycol, 1,3-butanediol or other polyol may be added to the tobacco sheet. The amount of the aerosol source added is preferably 5 to 50% by weight, more preferably 10 to 30% by weight, based on the dry weight of the tobacco sheet. In addition, known flavorings, etc. may be added to the tobacco sheet.

(2) Adjacent member The adjacent member 303 is a member adjacent to the downstream side of the tobacco-containing segment 301. In this embodiment, downstream refers to the direction toward the mouth end. Examples of the adjacent member include a cooling member for cooling the aerosol, a support member for increasing the strength of the entire vessel, or a mouthpiece, which will be described later. In this embodiment, the adjacent member 303 is preferably a cooling member.

The cooling member is a member for promoting aerosolization by cooling flavor components and vapor generated in the tobacco-containing segment 301. The cooling member may be a hollow paper tube. The paper tube is preferably made of cardboard, which has higher rigidity than cigarette paper or tipping paper. The paper tube may be provided with ventilation V (openings). It is preferable that multiple ventilations are provided along the circumference of the paper tube. The cooling member may also be filled with a gathered sheet to improve heat exchange efficiency. The dimensions of the cooling member are not limited, but the length is preferably 15 to 25 mm, and the diameter is preferably 5.5 to 7.5 mm.

(3) Wrapping material The wrapping material wraps the tobacco-containing segment, or the tobacco-containing segment and an adjacent member. The wrapping material has a high heat transfer part that has higher heat transfer than the abutting wrapped member. A non-combustion heating type flavor inhaler having this configuration has an excellent balance between suppression of breakage and heat transfer efficiency, and increases the total amount of smoke. Examples of materials constituting the high heat transfer part include materials with a thermal conductivity coefficient of 50 (W/m/°C) or more. Specific examples of such materials include aluminum, iron, stainless steel, zinc, gold, and silver.

The heat transfer from the wrapping material to the tobacco-containing segment varies depending on the thermal conductivity coefficient of the material used, as well as the axial length and thickness of the high heat transfer portion, the diameter of the non-combustion heating type flavor inhaler, etc. Therefore, the material constituting the high heat transfer portion may be preferably selected so as to satisfy the heat transfer characteristics of formula (1).
Q _dT ≧330 (W/℃)...(1)
Here, Q _dT is the heat transfer coefficient defined by the following formula calculated based on the cylindrical sample shown in FIG.
Q _dT = K×2πL/ln(r ₂ /r ₁ )
K = Thermal conductivity coefficient (W/m/°C)
L = axial length of sample (mm)
_r2 = outer radius of sample (mm)
r ₁ = inner radius of sample (mm)

Specifically, Q _dT is defined as follows:
Fig. 21 shows a cylindrical sample with inner radius _r1 , outer radius _r2 , and height L, where the temperature of the inner wall is _T1 and the temperature of the outer wall is _T2 . In this case, the heat transfer rate Q (W) is given by equation (i) from Fourier's law, where K is the thermal conductivity coefficient (W/m/°C) and Am is the logarithmic mean area ( ^m2 ).

By transforming this into equation (ii), and further integrating both sides, equation (iii) is obtained, which can then be transformed into equation (1). That is, Q _dT is a parameter obtained by dividing the heat transfer rate Q(W) obtained in the model of FIG. 21 by the temperature difference between the inner wall and the outer wall.

For example, in the case of a thin-wrap type non-combustion heating flavor inhaler with a diameter of about 5 mm, the above formula (1) can be satisfied by using aluminum (K = 236 (W/m/℃)) in the following cases.

In addition, in the case of a standard-wound type non-combustion heating flavor inhaler with a diameter of about 7 mm, the above formula (1) can be satisfied in the following cases. The following table shows the cases where a material with low thermal conductivity is used.

From the above, in one embodiment, Q _dT is preferably 650 (W/° C.) or more, or 850 (W/° C.) or more. The high heat transfer portion is selected from the group consisting of aluminum, stainless steel, gold, silver, and combinations thereof.

The wrapping material may be composed of only a highly heat-conductive portion, or may include other materials. For example, the wrapping material may be a laminate (laminated body) in which metal particles or a metal sheet is supported on a paper or polymer sheet. The wrapping material may also be a composite in which particles of a highly heat-conductive metal or ceramic are dispersed in a matrix of paper or polymer. Alternatively, the wrapping material may be a sheet in which a sheet of paper or polymer is joined to a sheet of a highly heat-conductive metal or ceramic at or near the end.

18(1), the high heat transfer portion of the wrapping material 309 wraps the vicinity of the downstream end of the tobacco-containing segment 301. For ease of explanation, the downstream end of the tobacco-containing segment 301 is defined as the origin 0, the upstream end of the tobacco-containing segment 301 is defined as X, and the downstream end of the adjacent member 303 is defined as -Y. The vicinity of the downstream end of the tobacco-containing segment 301 is preferably a region starting from the origin 0 and ending at 0.05X to 0.5X, and more preferably a region starting from the origin 0 and ending at 0.05X to 0.2X. From the viewpoint of making the effect of this embodiment more pronounced, it is preferable that the high heat transfer portion also wraps around the joint between the tobacco-containing segment 301 and the adjacent member 303, i.e., the vicinity of the upstream end of the adjacent member 303. The vicinity of the upstream end of the adjacent member 303 is preferably a region starting from the origin 0 and ending at -0.01Y to -0.5Y, and more preferably an area ending at -0.01Y to -0.15Y. Furthermore, from the viewpoint of increasing the thermal conductivity, the highly thermally conductive portion may be wrapped up to the most upstream end of the tobacco-containing segment 301. Furthermore, as shown in FIG. 18(2), the wrapping material 309 and the tipping paper 307 may be joined at their end faces to form a single piece of tipping paper. Furthermore, as shown in FIG. 18(3), the tipping paper 307 may be disposed on the outside of the wrapping material 309. As described above, the wrapping material 309 may be composed of only a highly thermally conductive portion or may include other materials, but for the sake of simplicity, FIGS. 18 and 20 show an embodiment in which the wrapping material 309 is composed of only a highly thermally conductive portion.

20A shows a specific embodiment in which the wrapping material 309 extends from the tobacco-containing segment 301 to the adjacent member 303. In this embodiment, the tipping paper 307 does not wrap the tobacco-containing segment 301. In the figure, 308 is a second wrapping paper, preferably made of paper. FIG. 20A(1) shows an embodiment in which the wrapping material 309 and the second wrapping paper 308 are joined together to wrap from the tip of the tobacco-containing segment 301 to the upstream end of the adjacent member 303. FIG. 20A(2) shows an embodiment in which the wrapping material 309 wraps from the downstream end of the tobacco-containing segment 301 to the upstream end of the adjacent member 303, and the second wrapping paper 308 wraps the tobacco-containing segment 301, a part of which is present on the outer periphery of the wrapping material 309. Figure 20A (3) shows an embodiment in which a second wrapping paper 308 wraps the tobacco-containing segment 301, and a wrapping material 309 wraps the downstream end of the tobacco-containing segment 301 from above the second wrapping paper 308 and extends to the upstream end of the adjacent member 303.

Figure 20B shows a specific embodiment in which the wrapping material 309 wraps the downstream end of the tobacco-containing segment 301. In this embodiment, the tipping paper 307 wraps the downstream end of the tobacco-containing segment 301. Figure 20B (1) shows an embodiment in which the wrapping material 309 and the second cigarette paper 308 are joined together to wrap the tobacco-containing segment 301. Figure 20B (2) shows an embodiment in which the wrapping material 309 wraps the downstream end of the tobacco-containing segment 301, and the second cigarette paper 308 wraps the tobacco-containing segment 301 from above the wrapping material 309. Figure 20B (3) shows an embodiment in which the second cigarette paper 308 wraps the tobacco-containing segment 301, and the wrapping material 309 wraps the downstream end of the tobacco-containing segment 301 from above the second cigarette paper.

Figure 20C shows a specific embodiment in which the wrapping material 309 is covered with the tipping paper 307. In this embodiment, the wrapping material 309 is attached to a part of the inner peripheral surface of the tipping paper 307. Figure 20C (1) shows an embodiment in which the wrapping material 309 wraps the downstream end of the tobacco-containing segment 301 wrapped in the second wrapping paper 308 and the upstream end of the adjacent member 303. The upstream end of the tipping paper 307 is in the same position as the upstream end of the wrapping material 309. Figure 20C (2) shows an embodiment in which the upstream end of the tipping paper 307 extends to the upstream end of the tobacco-containing segment 301 in Figure 20C (1). Figure 20C (3) shows an embodiment in which the tipping paper 307 and the wrapping material 309 extend to the upstream end of the tobacco-containing segment 301 in Figure 20C (1).

It is preferable that the high heat transfer portion of the wrapping material 309 is present in the portion of the tobacco-containing segment 301 that is heated by the heater. In one embodiment, the axial length of the high heat transfer portion is approximately 3 to 10 mm.

(4) Mouthpiece The mouthpiece is a member that constitutes the mouth end. In one embodiment, the mouthpiece 305 includes a filter 352 and a center hole filter 354. As the filter 352 and the center hole filter 354, any known filter can be used.

2. Non-combustion heating type flavor inhalation system The combination of the non-combustion heating type flavor inhaler and the heating unit is also called a non-combustion heating type flavor inhalation system. Figure 19 shows one embodiment of the system. In the figure, 300 is a non-combustion heating type flavor inhalation system, 310 is a non-combustion heating type flavor inhaler, and 330 is a heating unit equipped with a heater. The heating unit is equipped with a heater, a housing, a power source, etc.

The heater preferably heats the tobacco-containing segment 301 electrically. The shape of the heater is not limited, and is disposed on the outer periphery of the tobacco-containing segment 301. The heater may be, for example, a sheet-shaped heater, a flat heater, a cylindrical heater, or a needle-shaped heater. The sheet-shaped heater is a flexible sheet-shaped heater, and examples thereof include a heater including a film (thickness: about 20 to 225 μm) of a heat-resistant polymer such as polyimide. The flat heater is a rigid flat heater (thickness: about 200 to 500 μm), and examples thereof include a heater having a resistance circuit on a flat substrate and using that part as a heating part. The cylindrical heater is a hollow or solid cylindrical heater, and examples thereof include a heater having a resistance circuit on the outer periphery and using that part as a heating part. The cross-sectional shape of the cylindrical heater may be a circle, an ellipse, a polygon, a rounded polygon, or the like.

Specific examples of this embodiment are described below, but the present invention is not limited to these.

[Example 1]
Tobacco lamina (tobacco leaves) was dry-milled using a Hosokawa Micron ACM machine to obtain tobacco powder. The cumulative 50% particle size (D50) and cumulative 90% particle size (D90) of the volume-based particle size distribution of the tobacco powder were measured using a Mastersizer (product name, manufactured by Malvern Panalytical Division of Spectris Co., Ltd.) by dry laser diffraction method, and were found to be 57 μm and 216 μm, respectively.

A tobacco sheet was produced by rolling using the tobacco powder. Specifically, 87 parts by mass of the tobacco powder, 12 parts by mass of glycerin as an aerosol generating agent, and 1 part by mass of carboxymethylcellulose as a molding agent were mixed and kneaded in an extrusion molding machine. The kneaded product was molded into a sheet using two pairs of metal rolls and dried in a hot air circulating oven at 80°C to obtain a tobacco sheet. The tobacco sheet was shredded into a size of 0.8 mm x 9.5 mm using a shredder.

The swelling of the shredded tobacco sheet was measured. Specifically, the shredded tobacco sheet was left in a 22°C, 60% humidity chamber for 48 hours, and then the swelling was measured using a DD-60A (product name, manufactured by Borgwald). The measurement was performed by placing 15 g of the shredded tobacco sheet in a cylindrical container with an inner diameter of 60 mm and compressing it for 30 seconds under a load of 3 kg to determine the volume. The results are shown in Table 4. In Table 4, the swelling is shown as the increase in swelling (%) relative to the standard value of the swelling of Comparative Example 1 described below.

[Example 2]
A tobacco sheet was prepared and evaluated in the same manner as in Example 1, except that tobacco powder having a cumulative 50% particle size (D50) and a cumulative 90% particle size (D90) of 121 μm and 389 μm, respectively, in the volume-based particle size distribution measured by dry laser diffraction method was used as the tobacco powder. The results are shown in Table 4.

[Example 3]
A tobacco sheet was prepared and evaluated in the same manner as in Example 1, except that tobacco powder having a cumulative 50% particle size (D50) and a cumulative 90% particle size (D90) of 225 μm and 623 μm, respectively, in the volume-based particle size distribution measured by dry laser diffraction method was used as the tobacco powder. The results are shown in Table 4.

[Comparative Example 1]
A tobacco sheet was prepared and evaluated in the same manner as in Example 1, except that tobacco powder having a cumulative 50% particle size (D50) and a cumulative 90% particle size (D90) of 32 μm and 84 μm, respectively, in the volume-based particle size distribution measured by dry laser diffraction method was used as the tobacco powder. The results are shown in Table 4.

As can be seen from Table 4, the tobacco sheets of Examples 1 to 3, which are tobacco sheets according to this embodiment, had improved swelling bulkiness compared to the tobacco sheet of Comparative Example 1, in which the D90 of the tobacco powder measured by dry laser diffraction method was less than 200 μm. Note that, although the tobacco sheets of Examples 1 to 3 were manufactured by the rolling method, the swelling bulkiness was also improved when the tobacco sheets were similarly manufactured by the casting method.

<Preparation of non-combustion heating type flavor inhaler>
[Reference Example 1b]
A tobacco filler was prepared by mixing shredded tobacco sheets with glycerin (15 g/100 g) and propylene glycol (4 g/100 g). The tobacco filler was rolled up with cigarette paper (manufactured by Nippon Paper Papylia, basis weight 35 g/m ² , thickness 52 μm) using a high-speed rolling machine.
The weight of each piece was 0.8 g, the circumference of the winding was 22 mm, and the length of the winding was 68 mm.
The rolled tobacco-containing segments were stored in sealed plastic containers, 200 of each level.
The stored tobacco-containing segments were cut into lengths of 20 mm. Then, a tobacco-containing segment, a paper tube 20 mm long, a center hole with a 12 mm long through hole (diameter 4.5 mm), and a filter medium (density: 0.122 g/cm3, compression change rate P (hereinafter referred to as "hardness"): 88%) consisting of cellulose acetate fibers (single fiber denier (g/9000 m): ¹² , total fiber denier (g/9000 m): 28000) with a length of 8 mm and a Y-shaped circumferential cross section were wrapped with the tipping paper prepared above to produce a non-combustion heating type flavor inhaler without any openings. Then, 17 holes were drilled 5.5 mm toward the paper tube from the boundary between the paper tube and the center hole filter (25.5 mm from the mouth end of the non-combustion heating type flavor inhaler) concentrically in the circumferential direction of the paper tube and penetrating both the tipping paper and the paper tube to provide openings, thereby producing the non-combustion heating type flavor inhaler of Reference Example 1b. The airflow resistance in the longitudinal direction of the filter segment of the non-combustion heating type flavor inhaler was 1.35 mmH ₂ O/mm.
The compression change rate P (hardness) of the filter medium represented by the above formula (1) was measured using a SODIM-H Hardness module manufactured by Sodim SAS, etc. This is the same for all the following reference examples and comparative examples.

[Comparative Example 1b]
A non-combustion heating type flavor inhaler of Comparative Example 1b was produced in the same manner as the non-combustion heating type flavor inhaler of Reference Example 1b, except that the filter medium (density: 0.122 g/cm ³ ) with single fiber denier (g/9000m): 12 and total fiber denier (g/9000m): 28000 was changed to a filter medium (density: 0.143 g/cm ³ , hardness: 87%) with single fiber denier (g/9000m): 5.9 and total fiber denier (g/9000m): 35000. The airflow resistance of the filter segment of the non-combustion heating type flavor inhaler in the longitudinal direction was 2.62 mmH ₂ O/mm.

[Reference Example 2b]
A flavor capsule containing menthol (spherical shape with a diameter of 3.5 mm. The same applies to the flavor capsules in other reference examples and comparative examples) is placed inside the filter medium, and the length of the center hole is changed from 12 mm to 8 mm, and the length of the filter medium is changed from 8 mm to 12 mm. The non-combustion heating type flavor inhaler of Reference Example 2b is produced in the same manner as the non-combustion heating type flavor inhaler of Reference Example 1b. The density (density without the flavor capsule), hardness, and longitudinal air resistance of the filter segment of the non-combustion heating type flavor inhaler are 0.122 g/cm ³ , 88%, and 1.93 mmH ₂ O/mm, respectively. The parameters related to the filter segment are evaluated without crushing the flavor capsule. This is also the same for other reference examples and comparative examples using flavor capsules.

[Reference Example 3b]
A non-combustion heating type flavor inhaler of Reference Example 3b was produced in the same manner as the non-combustion heating type flavor inhaler of Reference Example 1b, except that the filter medium (density: 0.122 g/cm ³ ) with single fiber denier (g/9000m): 12 and total fiber denier (g/9000m): 28000 was changed to a filter medium (density: 0.119 g/cm ³ , hardness: 89%) with single fiber denier (g/9000m): 8 and total fiber denier (g/9000m): 28000. The airflow resistance of the filter segment of the non-combustion heating type flavor inhaler in the longitudinal direction was 1.69 mmH ₂ O/mm.

[Reference Example 4b]
A flavor capsule containing menthol is placed inside the filter medium, the length of the center hole is changed from 12mm to 8mm, the length of the filter medium is changed from 8mm to 12mm, and the filter medium is changed from a single fiber denier (g/9000m): 12, total fiber denier (g/9000m): 28000 (density: 0.122g/cm ³ , hardness: 88%) to a single fiber denier (g/9000m): 8, total fiber denier (g/9000m): 28000 (density: 0.123g/cm ³ , hardness: 91%), except that the non-combustion heating type flavor inhaler of Reference Example 4b is produced by the same method as the non-combustion heating type flavor inhaler of Reference Example 1b. The airflow resistance of the filter segment of the non-combustion heating type flavor inhaler in the longitudinal direction is 2.76mmH ₂ O/mm.

[Reference Example 5b]
A non-combustion heating type flavor inhaler of Reference Example 5b was produced in the same manner as the non-combustion heating type flavor inhaler of Reference Example 1b, except that the length of the center hole was changed from 12 mm to 6 mm and the length of the filter material was changed from 8 mm to 14 mm. The density, hardness, and longitudinal air resistance of the filter segment of the non-combustion heating type flavor inhaler were 0.129 g/ ^cm3 , 90%, and 1.58 _mmH2O /mm, respectively.

[Reference Example 6b]
The length of the center hole was changed from 12mm to 6mm, the length of the filter material was changed from 8mm to 14mm, and the filter material was changed from a single fiber denier (g/9000m): 12, total fiber denier (g/9000m): 28000 (density: 0.122g/cm ³ , hardness: 88%) to a single fiber denier (g/9000m): 8, total fiber denier (g/9000m): 28000 (density: 0.119g/cm ³ , hardness: 89%), except that the non-combustion heating type flavor inhaler of Reference Example 6b was produced in the same manner as the non-combustion heating type flavor inhaler of Reference Example 1b. The airflow resistance of the filter segment of the non-combustion heating type flavor inhaler in the longitudinal direction was 1.69mmH ₂ O/mm.

[Reference Example 7b]
A flavor capsule containing menthol is placed inside the filter medium, menthol is added to the filter medium at 6 mg/12 mm, the length of the center hole is changed from 12 mm to 8 mm, and the length of the filter medium is changed from 8 mm to 12 mm, but the non-combustion heating type flavor inhaler of Reference Example 7b is produced in the same manner as the non-combustion heating type flavor inhaler of Reference Example 1b. The density (density without the flavor capsule), hardness, and longitudinal airflow resistance of the filter segment of the non-combustion heating type flavor inhaler are 0.122 g/cm ³ , 91%, and 2.48 mmH ₂ O/mm, respectively.

[Comparative Example 2b]
A flavor capsule containing menthol was placed inside the filter medium, and 6 mg/12 mm of menthol was added to the filter medium. The length of the center hole was changed from 12 mm to 8 mm, and the length of the filter medium was changed from 8 mm to 12 mm. The filter medium had a single fiber denier (g/9000m): 12 and a total fiber denier (g/9000m): 28000 (density: 0.122 g/cm ³ , hardness: 88%), but was changed to a single fiber denier (g/9000m): 5.9 and a total fiber denier (g/9000m): 35000 (density (density excluding flavor capsule): 0.152 g/cm ³ , hardness: 94%). The non-combustion heating type flavor inhaler of Comparative Example 2b was produced in the same manner as the non-combustion heating type flavor inhaler of Reference Example 1b. The airflow resistance in the longitudinal direction of the filter segments of the non-combustion heating type flavor inhaler was 6.23 mmH ₂ O/mm.

[Comparative Example 3b]
A non-combustion heating type flavor inhaler of Comparative Example 3b was produced in the same manner as the non-combustion heating type flavor inhaler of Reference Example 1b, except that the filter medium (density: 0.122 g/cm ³ ) with single fiber denier (g/9000m): 12 and total fiber denier (g/9000m): 28000 was changed to a filter medium (density 0.113 g/cm ³ , hardness: 85%) with single fiber denier (g/9000m): 20 and total fiber denier (g/9000m): 25000. The airflow resistance in the longitudinal direction of the filter segment of the non-combustion heating type flavor inhaler of Comparative Example 3b was 0.80 mmH ₂ O/mm. Since the non-combustion heating type flavor inhaler of Comparative Example 3b did not have sufficient hardness, the delivery amount evaluation described below was not performed.

The manufacturing conditions and characteristics of the non-combustion heating type flavor inhalers in each of the reference examples and comparative examples mentioned above are summarized in Table 5.

<Evaluation of delivery amount>
Each of the non-combustion heating type flavor inhalers produced in Reference Examples 1b to 7b and Comparative Examples 1b to 3b was subjected to a smoking test, and the delivery amount of the components generated by heating was evaluated.
The smoking test was carried out under the following conditions with reference to Canadian Intense Smoking (CIR).
A heating device for peripheral heating was used, and after inserting the non-combustion heating type flavor inhaler, the heater temperature was raised to 295°C within 21 seconds, lowered to 260°C within 5 seconds, and maintained at 260°C until the end of the evaluation (about 330 seconds). After this, the smoking test was performed using a Borgwaldt single-cigarette automatic smoking machine under the conditions of a flow rate of 55cc/2 seconds and a smoking interval of 30 seconds. At this time, the opening made in the cooling segment was set to be 25.5 mm from the end of the mouth end side of the region where the non-combustion heating type flavor inhaler and the heating device contact each other. The mainstream smoke generated in the smoking test was collected on a Cambridge pad, and after 12 puffs were performed for Reference Examples 1b to 6b and Comparative Example 1b, and 10 puffs were performed for Reference Examples 7b and 8b and Comparative Examples 2b and 3b, the Cambridge pad was removed and extracted with 10 ml of ethanol, and the amount of each component in the mainstream smoke collected after each puff was measured using GC-MS.
In the non-combustion heating type flavor inhalers of Reference Examples 1b to 9b and Comparative Example 1b, the amounts of nicotine and glycerin as indicators of the amounts of components in the mainstream smoke obtained from the above measurements are shown in the following Tables 6 and 7, and Figures 14 to 17. Specifically, Fig. 14 shows the results of Reference Examples 1b and 3b and Comparative Example 1b (study of the effect of fiber denier under the conditions of no capsule, no menthol, and center hole length: filter segment length = 12:8), Fig. 15 shows the results of Reference Example 7b and Comparative Example 2b (study of the effect of fiber denier under the conditions of capsule, menthol, center hole length: filter segment length = 8:12), Fig. 16 shows the results of Reference Examples 2b and 4b (study of the effect of fiber denier under the conditions of capsule, no menthol, center hole length: filter segment length = 12:8), and Fig. 17 shows the results of Reference Examples 5b and 6b (study of the effect of single fiber denier under the conditions of no capsule, no menthol, center hole length: filter segment length = 6:14). Note that, for the Reference Examples and Comparative Examples in which capsules were added, the above evaluation was performed after crushing the flavor capsule.

From Tables 4 and 5 above, and Figures 14 to 17, it can be seen that, regardless of whether or not a fragrance capsule is added to the filter material, and regardless of whether or not menthol is added, non-combustion heating type flavor inhalers with a short fiber denier of 8 to 12 inclusive have an advantage in terms of the delivery amount of both nicotine and glycerin, which are indicators of the amounts of components in mainstream smoke, compared to non-combustion heating type flavor inhalers with a short fiber denier outside this range.

[Reference Example 1c]
A non-combustion heating type flavor inhaler as shown in Fig. 18 was prepared. The outer diameter was 7 mm, the total length was 55 mm, and the dimensions of each segment were as follows:
Tobacco-containing segment: 20 mm
Cooling segment: 20 mm
Mouthpiece segment: 15mm

The following wrapping materials were prepared:
Aluminum foil A1: Axial length of the non-combustion heating type flavor inhaler is 15 mm, thickness is 30 μm
Aluminum foil A2: The axial length of the non-combustion heating type flavor inhaler is 22 mm, and the thickness is 30 μm.
Laminating paper AP: A laminate of 50 μm thick paper and 15 μm thick aluminum foil, with an axial length of 15 mm for the non-combustion heating type flavor inhaler. Each wrapping material was used to wrap a non-combustion heating type flavor inhaler. The positions of the upstream ends of the wrapping materials relative to the upstream end of the non-combustion heating type flavor inhaler are shown in Table 8.

The tobacco shredded end of the non-combustion heating type flavor inhaler was inserted into the heating device shown in FIG. 19. The tobacco-containing segment was heated to 295°C, with a portion of the tobacco-containing segment 301 being heated by the heater. The tobacco-containing segment was then subjected to a smoking test using a smoking machine. Specifically, the sample was automatically smoked using an automatic smoking machine (LM-1 manufactured by Borgwaldt KC Inc.) under the following conditions: smoke volume 27.5 ml/sec, smoking time 2 sec/puff, smoking frequency 2 puffs/min, 8 puffs.

After smoking, the samples were cooled to room temperature and subjected to a breaking test. The outline of the test is shown in Figure 22. In the figure, P is the plunger and B is the base. The plunger travel distance, maximum load, and breaking condition are summarized in Table 8.

[Comparative Example 1c]
A non-combustion heating type flavor inhaler was prepared similarly to Reference Example 1c, except that the wrapping material was not wrapped. The flavor inhaler before being subjected to the smoking test was subjected to a breaking test in the same manner as Reference Example 1c. Furthermore, a non-combustion heating type flavor inhaler was prepared similarly to Reference Example 1c. The flavor inhaler without wrapping the wrapping material was subjected to a smoking test in the same manner as Reference Example 1c, and then subjected to a breaking test. The results are shown in Table 8.

From the results of Comparative Example 1c, it is clear that the tobacco-containing segment before heating does not break and is resistant to breaking, but the tobacco-containing segment after heating breaks with a small force. On the other hand, the tobacco-containing segment after heating in Reference Example 1c did not break with the force (1.61 N) required to break the tobacco-containing segment after heating in Comparative Example 1c. In other words, the tobacco-containing segment of Reference Example 1c required a fairly large force to break. In addition, the average distance is the average travel distance of the plunger until the sample breaks, and is an index of the tenacity of the sample, that is, the sample is bent and does not break easily. Comparing Reference Example 1c and Comparative Example 1c, both the average distance and the average load are higher in Reference Example 1c. From this, it is clear that the tobacco-containing segment of Reference Example 1c has a sufficient effect of suppressing breakage.

[Smoke volume measurement]
A smoking test was performed using an automatic smoking machine under the above-mentioned conditions, and the amount of smoke per puff was measured. However, the heating temperature was set to 295°C. Specifically, the light transmittance of the smoke discharged from the smoking machine without passing through a filter was detected using a photosensor, and the amount of smoke was measured. A general method for measuring the amount of smoke is to collect smoke components in a glass fiber filter for each puff and weigh them. However, this method requires relatively complicated operations, and it is difficult to perform rapid measurement in real time. Therefore, in this embodiment, a measurement system using a photosensor was newly constructed and used. In order to verify the accuracy of the measurement system, a commercially available product PloomTech+ (registered trademark) (manufactured by Japan Tobacco Inc.) was used as an aerosol source, and the accuracy of this measurement system itself in the relationship between the voltage value and a certain amount of smoke was verified. As a result, a result of σ0.005V (CV value less than 2%) was obtained, and it was confirmed that this system had sufficient accuracy for data evaluation.

[Correlation between smoke volume measurements and actual smoke volume]
In order to investigate the relationship between the smoke amount measurement value (sensor voltage value) and the feeling of the smoke amount, a panelist performed a sensory evaluation of the smoke amount. The panelists were six people who had been thoroughly trained in the sensory evaluation of the smoke amount, and based on the following evaluation criteria, a commercially available product PloomS (registered trademark) (manufactured by Japan Tobacco Inc.) was used as an aerosol source to perform a sensory evaluation for a certain smoke amount. At the same time, the smoke amount was measured using the above-mentioned system, and the correlation was verified. Specifically, the verification was performed based on the Weber-Fechner law, which states that there is a logarithmic correlation between the sensation and the amount of stimulation. The results are shown in FIG. 24.

<Evaluation criteria>
0: No smoke at all 1: A little smoke 2: Some smoke 3: Smoke 4: A lot of smoke 5: A lot of smoke

The results show that there is a high correlation between the sensor voltage value and the feeling of the smoke volume when evaluating a certain amount of smoke ( ^R2 >0.95). Therefore, it was found that the sensor voltage value obtained by the above-mentioned measurement system can accurately replace the sensory evaluation.

[Reference Example 2c]
A non-combustion heating type flavor inhaler with the same wrapping material as in Reference Example 1c was prepared. The smoke volume was measured for each flavor inhaler as described above. The voltage value from the photosensor reflected the smoke concentration, and could be recorded in real time by a data logger. The smoke volume was determined as the difference between the maximum voltage value in one puff and the baseline. The results are shown in FIG. 23. The voltage difference of 0.05V is a level at which panelists can properly recognize the difference in smoke volume. In addition, in order to perform statistical verification of the variation in data, the standard deviation was calculated for each puff value of the comparative example and the reference example, and the average value was obtained. As a result, the average value was 0.04V, and it was confirmed that there was a difference between the comparative example and each reference example, especially after the third puff.

[Comparative Example 2c]
A non-combustion heating type flavor inhaler was prepared in the same manner as in Reference Example 1c, except that the wrapping material was not wrapped. A smoking test was carried out in the same manner as in Reference Example 2c, and the amount of smoke in each puff was obtained. The results are shown in Figure 23.

As shown in the figure, in the reference example, the heat from the heater was sufficiently transferred to the tobacco-containing segment, resulting in an increase in the total amount of smoke. In particular, the tobacco-containing segment using the A2 wrapping material showed a significant increase in the amount of smoke, with little attenuation. In other words, the tobacco-containing segment was able to achieve an increase in the total amount of smoke. This is presumably because the A2 wrapping material was able to provide a sufficient amount of heat to the chopped pieces, so that even chopped pieces located far from the heater were able to be effectively heated.

Reference Signs List 1 Non-combustion heating type flavor inhaler 2 Tobacco-containing segment 3 Cooling segment 4 Center hole segment 5 Filter segment 6 Mouthpiece segment 7 Cylindrical member 8 Perforation 9 Second filling layer 10 Second inner plug wrapper 11 Outer plug wrapper 12 Mouthpiece lining paper 13 Heating device 14 Body 15 Heater 16 Metal tube 17 Battery unit 18 Control unit 19 Recess

Claims (16)

A non-combustion heating type flavor inhaler comprising a tobacco-containing segment including a tobacco sheet for a non-combustion heating type flavor inhaler,
The tobacco sheet is a rolled product containing tobacco powder having a cumulative 90% particle size (D90) of 200 μm or more in a volume-based particle size distribution measured by a dry laser diffraction method;
The tobacco sheet has a bulkiness of 190 cc/100 g or more;
A non-combustion heating type flavor inhaler , wherein the packing density of the tobacco sheet in the tobacco-containing segment is 250 to 800 mg/cm3 ^. 2. The non-combustion heating type flavor inhaler according to claim 1, wherein the tobacco powder is at least one tobacco raw material selected from the group consisting of tobacco leaves, midribs, and stem residues. 2. The non-combustion heating type flavor inhaler according to claim 1, wherein the tobacco powder is contained in 100% by mass of the tobacco sheet at a ratio of 45 to 95% by mass. The non-combustion heating type flavor inhaler according to claim 1 , wherein the tobacco sheet further comprises an aerosol generating agent. 5. The non-combustion heating type flavor inhaler according to claim 4, wherein the aerosol generating agent is at least one selected from the group consisting of glycerin, propylene glycol, and 1,3-butanediol. 5. The non-combustion heating type flavor inhaler according to claim 4, wherein the tobacco sheet contains 100% by mass of the aerosol generating agent in a ratio of 4 to 50% by mass. The non-combustion heating type flavor inhaler according to claim 1 , wherein the tobacco sheet further comprises a molding agent . The non-combustion heating type flavor inhaler according to claim 7, wherein the molding agent is at least one selected from the group consisting of polysaccharides, proteins, and synthetic polymers. 8. The non-combustion heating type flavor inhaler according to claim 7 , wherein the tobacco sheet contains 100% by mass of the molding agent in an amount of 0.1 to 15% by mass. The non-combustion heating type flavor inhaler further includes a mouthpiece segment,
The tobacco-containing segment includes a first segment including an aerosol generating agent, and a second segment including the tobacco sheet for a non-combustion heating-type flavor inhaler,
The non-combustion heating type flavor inhaler according to claim 1 , wherein the mouthpiece segment includes a cooling segment and a filter segment. The non-combustion heating type flavor inhaler according to claim 10, wherein the first segment includes a cylindrical wrapper and a nonwoven fabric made of plant fibers filled inside the wrapper, and the nonwoven fabric contains the aerosol generating agent. The non-combustion heating type flavor inhaler is rod-shaped and further includes a mouthpiece segment;
the mouthpiece segment comprises a filter segment having a filter medium;
2. The non-combustion heating type flavor inhaler according to claim 1 , wherein the filter medium is made of fibers having a Y-shaped circumferential cross section and a single fiber denier of 8 or more and 12 or less. The non-combustion heating type flavor inhaler according to claim 12 , wherein the density of the filter medium is 0.09 g/ ^cm3 or more and 0.14 g/ ^cm3 or less. The non-combustion heating type flavor inhaler is
an abutment member adjacent the tobacco-containing segment;
a wrapping material that wraps the tobacco-containing segment, or a wrapping material that wraps the tobacco-containing segment and the adjacent member;
Further equipped with
The wrapping material has a high heat transfer portion having a higher heat transfer property than the wound member in contact therewith,
2. The non-combustion heating type flavor inhaler according to claim 1 , wherein the high heat transfer portion wraps the vicinity of the downstream end of the tobacco-containing segment. The non-combustion heating type flavor inhaler according to claim 14 , wherein the high heat transfer portion wraps around from the vicinity of the downstream end of the tobacco-containing segment to the vicinity of the upstream end of the adjacent member. The non-combustion heating type flavor inhaler according to claim 1 ,
a heating device for heating the tobacco-containing segment;
A non-combustion heating type flavor inhalation system comprising: