JP7477477B2 - Heating equipment container - Google Patents

Description

The present invention relates to a heating device container that is worn around the user's neck, and a heating device set that includes the heating device container and a carbon dioxide generating agent package.

Bath additives that utilize the blood circulation promoting effect of carbon dioxide gas have been widely used. These bath additives contain, for example, carbonates and organic acids, which are mixed and dissolved in warm water to generate carbon dioxide gas. When the user enters (takes a warm bath in) the warm water containing the carbon dioxide gas thus generated, the user can feel a warming effect, and the carbon dioxide gas can penetrate the skin, dilate the blood vessels, and promote blood circulation.

Also, a bag-like container that is attached to the body to continuously supply carbon dioxide gas (carbon dioxide) to the skin or mucous membranes to repair damage is known (Patent Document 1). This bag-like container is configured with a gas-permeable material with a carbon dioxide permeability of 1,000 to 100,000 ^cm2 / ^m2 ·day·atm between the affected area and a carbon dioxide supplying part such as a water-absorbent substance containing carbonated water, and is considered to be hygienic and less irritating because the poultice base material and additive components do not come into direct contact with the skin or mucous membranes.

JP 2002-326938 A

However, the use of bath additives requires a warm bath, and therefore the place where they can be used is limited to a bathroom or the like.
On the other hand, the bag-like container described in Patent Document 1 is likely to be applicable to any location, but it is unable to provide a warming sensation. Furthermore, although this bag-like container is attached to the body, no consideration is given to its ability to conform to the skin at a microscopic level with which it comes into contact.
Furthermore, when a flexible container filled with hot water containing carbon dioxide gas is used as a heating device by hanging it around the neck, it is usually difficult to securely attach the heating device to the neck or other areas of the body, and the warming sensation and blood circulation promotion effects are often not fully achieved.

The present invention was made in consideration of the above problems, and relates to a heating device container that can provide a heating device that has high conformability to the skin, excellent carbon dioxide gas permeability, and can be easily and stably attached when hung around the user's neck, as well as a heating device set that includes this heating device container and a carbon dioxide gas generating agent package.

The present invention relates to a heating device container that is worn around the neck of a user and includes a flexible cylindrical body portion formed from a laminated resin film and an injection port portion that is connected to the cylindrical body portion and is configured to be openable and closable so as to seal the cylindrical body portion, the laminated resin film being non-permeable to water, and the laminated resin film that forms at least the area of the cylindrical body portion that can come into contact with the skin of the user has a carbon dioxide gas transmission rate of 10 L/( ^m2 day atm) to 1,000,000 L/( ^m2 day atm) measured at 23°C and 0% relative humidity in accordance with JIS K7126-1, and the laminated resin film that forms this area includes a viscoelastic film layer in the outermost layer, and this viscoelastic film layer has dynamic viscoelasticity with a loss tangent tan δ value of 1.0 or more obtained by measurement at 40°C and a frequency of 2 Hz, and the cylindrical body portion includes two branched cylindrical portions that branch into two toward both sides of the injection port portion and is curved or bent.

According to the present invention, it is possible to provide a heating device container that can obtain a heating device that has high conformability to the skin, excellent carbon dioxide gas permeability, and that can be easily and stably attached from the neck to the shoulders and chest when worn around the neck of a user. When a user wears a heating device obtained using this heating device container around the neck, it is possible to obtain a high warming effect and a blood circulation promoting effect.

FIG. 2 is a front view of the heating device container according to the present embodiment. FIG. 2 is a front view showing a heating device obtained by sealing hot water containing carbon dioxide gas in the heating device container of FIG. 1. FIG. 13 is a front view showing a heating device obtained by sealing hot water containing carbon dioxide gas in a modified example of the heating device container according to the present embodiment. FIG. 13 is a front view showing a heating device obtained by sealing hot water containing carbon dioxide gas in another modified example of the heating device container according to the present embodiment. FIG. 13 is a front view showing a heating device obtained by sealing hot water containing carbon dioxide gas in another modified example of the heating device container according to the present embodiment. FIG. 13 is a front view showing a heating device obtained by sealing hot water containing carbon dioxide gas in another modified example of the heating device container according to the present embodiment. FIG. 6 is a schematic diagram of an example in which the heating device of FIG. 5 is used by hanging it around the neck. FIG. 2 is an enlarged cross-sectional view showing a cross section of a laminated resin film forming a tube main body of the heating device container according to the present embodiment. 3D images of unevenness (photos substituting drawings) obtained in Experimental Example 2. From the left, the images are unevenness 3D images of a control, sample 1, sample 3, and sample 4.

Below, preferred embodiments of the present invention will be described with reference to the drawings. In all drawings, similar components are given the same reference numerals, and duplicate descriptions will be omitted as appropriate. In addition, in some drawings, for convenience, reference numerals are not given (omitted) in some parts. Furthermore, the dimensional ratios of each component shown in the drawings may differ from the actual dimensional ratios in order to facilitate understanding of the invention.

〔overall structure〕
The overall configuration of the heating tool container 100 according to this embodiment will be described with reference to Figures 1 to 7. Figure 1 shows the heating tool container 100 according to this embodiment before hot water containing carbon dioxide gas is poured into it, and Figures 2 to 6 show the heating tool obtained by sealing hot water containing carbon dioxide gas in the heating tool container 100 according to this embodiment. Also, Figure 7 is a schematic diagram showing an example of the heating tool obtained by sealing hot water containing carbon dioxide gas in the heating tool container 100 according to this embodiment, worn around the neck.

The heating tool container 100 according to this embodiment is a heating tool container used by hanging it around the neck of the user, as shown in Fig. 1, and includes a flexible tube body 31 formed of a laminated resin film 25, and an inlet 11 connected to the tube body 31, which is configured to be openable and closable, and can seal the tube body 31. Hot water and a carbon dioxide gas generating agent, or hot water containing carbon dioxide gas, can be sealed in the tube body 31 from the inlet 11 to form a heating tool used by hanging it around the neck of the user, as shown in Fig. 7, for example. Furthermore, the hot water containing carbon dioxide gas sealed in the heating tool can be replaced from the inlet 11 and used, that is, it can be used repeatedly as a heating tool. The tube body 31 includes two branch tubes 31-1 that branch into two toward both sides of the inlet 11, and is curved or bent. This makes it possible to make a heating tool suitable for use by hanging it around the neck of the user in a stable manner. 1 to 3 and 5 to 6 show examples of an embodiment having a curved tube main body portion 31, and FIG. 4 shows an example of an embodiment having a bent tube main body portion 31.
Here, "used by hanging it around the neck of the user" means that the heating device is used by straddling both sides of the user's neck, and includes, for example, a mode in which it is used by hanging it from the neck to the shoulders and along the chest. Therefore, when this heating device is used by hanging it around the neck, there are cases in which the heating device comes into contact with areas other than the neck (for example, the shoulders and chest). The same applies below.

<Cylinder main body>
First, a detailed description will be given of the configuration of the tube main body 31. The configuration of the laminated resin film 25 that forms the tube main body 31 will be described later.

The tube main body 31 is a tube-shaped member with an internal space that can contain hot water or hot water containing carbon dioxide gas, that is, it is the member that becomes the main body when used as a heating device. The tube main body 31 is curved or bent and has two branched tube sections 31-1 that branch into two on either side of the inlet 11. With this configuration, when used as a heating device, as shown in Figure 7, the two branched tube sections 31-1 of the tube main body 31 containing hot water containing carbon dioxide gas can be worn on either side of the neck, straddling it, making it possible to stably fit the heating device from the neck to the shoulders and chest.

For example, but not limited to, the tube main body 31 may be an embodiment in which the ends are spaced apart from each other. Specifically, as shown in Figs. 1 to 3 and 6, the tube main body 31 may be curved in an approximately U-shape, and as shown in Fig. 4, the tube main body 31 may be curved or bent into a closed loop so that the ends come into contact with each other. Specifically, as shown in Fig. 5, the tube main body 31 may be curved in an approximately O-shape so that the ends come into contact with each other. These are preferred embodiments in which the tube main body 31 has such a shape not only in a two-dimensional state in which hot water or hot water containing carbon dioxide gas is not enclosed in the tube main body 31, but also in a state in which the tube main body 31 is filled with hot water or hot water containing carbon dioxide gas and laid flat. With such a configuration, when used as a heating device, it is easy to hang it around the neck for stable use, and easy to fit it closely around the neck or around the collarbone of the shoulder.
The above-mentioned embodiment in which the ends of the tube main body 31 are curved or bent to contact each other and form a closed ring does not include an embodiment in which the internal space of the tube main body 31 is circularly connected. In addition, the heating device container 100 according to this embodiment does not include one in which the tube main body 31 is not curved or bent (the longitudinal direction of the tube main body 31 is a straight tube). This is because in either case, it is difficult to use the heating device by hanging it around the neck.

In addition, it is preferable that the cross section of the internal space of the tube main body 31 when filled with hot water or hot water containing carbon dioxide gas is circular in the short direction, because when used as a heating device by hanging it around the neck, it can be easily abutted and adhered to both the neck and the collarbone area of the shoulder.
Here, the term "circular" means approximately circular, and includes not only a perfect circle in the shape of the cross section, but also a circle (e.g., an ellipse) in which the value obtained by dividing the major axis by the minor axis is 2 or less, or even 1.5 or less.

As shown in Figures 2-3 and 6, for example, it is preferable that the two branched tube sections 31-1 are formed so that they approach each other toward their ends (both ends) when hot water or hot water containing carbon dioxide is enclosed in at least the tube main body section 31. Furthermore, the two branched tube sections 31-1 may be formed so that their ends come into contact with each other as shown in Figure 5. This is because it is easier to stabilize the heating device hung around the neck. Note that this refers to the shape of the heating device container 100 according to this embodiment when it is filled with hot water or hot water containing carbon dioxide and placed flat.

Furthermore, in the tube body 31 in which the two branch tube sections 31-1 are formed so as to approach each other toward their ends when hot water or hot water containing carbon dioxide gas is enclosed, it is preferable that the ends of the two branch tube sections 31-1 are parallel before hot water or hot water containing carbon dioxide gas is poured into the tube body 31, as shown in FIG. 1. For example, in a heating device container 100 shaped as shown in FIG. 1, hot water or hot water containing carbon dioxide gas is enclosed in the tube body 31 in which the ends of the two branch tube sections 31-1 are parallel, and the distance between the curved outer periphery and the curved inner periphery of the curved region of the tube body 31 narrows, and the difference between the amount of deformation of the curved outer periphery and the amount of deformation of the curved inner periphery makes it easy for the two branch tube sections 31-1 described above to have a shape that approaches each other toward their ends.

Here, "parallel" means approximately parallel, and includes not only a state in which the center lines 40 of the two branched tubular sections 31-1 (tube main body section 31) are completely parallel, but also a state in which, when one of the center lines 40 of the two branched tubular sections 31-1 is used as a reference, the shortest distance between the imaginary center line of the other branched tubular section 31-1 that is completely parallel to the reference center line 40 and the end (end on the end side) of the actual center line of that branched tubular section 31-1 is less than half the inner diameter (length in the width direction) of the tube main body section 31.
In addition, the center line 40 of this branched tube section 31-1 (tube main body section 31) means a line passing through the center of the width direction length of the tube main body section 31 as shown by the two-dot dashed line in Figure 1 when hot water or hot water containing carbon dioxide gas is not enclosed in the tube main body section 31 in a two-dimensional state, and means a line passing through the center of the short cross section of the tube main body section 31 as shown by the two-dot dashed line in Figure 6 when hot water or hot water containing carbon dioxide gas is enclosed in the tube main body section 31 described later.

Furthermore, when the tube main body 31 has a curved shape (for example, a configuration curved into a substantially U-shape when laid flat as shown in Figs. 1 to 3 and 6, or a configuration curved into a substantially O-shape when laid flat as shown in Fig. 5), it is more preferable that the radius of curvature of the curved inner circumference 31-3 of this curved region is 15 cm or less, and even more preferably 10 cm or less. This is because, when used as a heating device, it becomes easier to use by hanging it around the neck, and is less affected by the thickness of the user's neck or shoulder width. For example, a heating device obtained using the heating device container 100 of this embodiment can be easily and stably attached to the neck, shoulders, and chest, even when used by a user with a relatively thin neck.

In addition, the tube body 31 may be configured such that the lengths from the ends 31-5 of the two branch tube parts 31-1 to the injection port part 11 (the length following the center line 40) are different from each other, as shown in FIG. 3. In other words, the lengths in the longitudinal direction (the curved or bent longitudinal direction of the tube body 31) of the two branch tube parts 31-1 that branch into two toward both sides of the injection port part 11 may be different from each other. In this configuration, the injection port part 11 is connected to a position offset from the midpoint of the entire length of the curved or bent longitudinal direction of the tube body part 31, and since the injection port part 11 is not located directly behind the neck when used as a heating device by hanging it around the neck, the injection port part 11 is less likely to hit the back of a chair or a bathtub when the heating device is in use.

Alternatively, the tube body 31 may have the same length from the end 31-5 of the two branch tube parts 31-1 to the inlet part 11, as shown in Figures 1-2 and 4-6. In other words, the two branch tube parts 31-1 branched into two toward both sides of the inlet part 11 may have the same longitudinal length. With such a configuration, when hot water or hot water containing carbon dioxide is injected into the tube body 31, it is very unlikely to become distorted. Since the tube body 31 is formed of a laminated resin film 25 including a viscoelastic film layer 21 having a predetermined dynamic viscoelasticity, which will be described later, there is a possibility that the above-mentioned distorted shape may be deformed into an unintended shape. This may affect the stability, adhesion, and feeling of use (warming effect, etc.) when used as a heating tool, and since this deformation is irreversible, repeated use may be difficult. However, when the tube body 31 is configured as described above, uneven distribution of the hot water or hot water containing carbon dioxide gas is extremely unlikely to occur, the balance of the resulting heating device is improved, and it is easier to fit more stably when in use. It can also be used repeatedly.

Furthermore, the closed regions at the ends of the two branching tube portions 31-1 are preferably configured to be hemispherical when hot water or hot water containing carbon dioxide is sealed inside, since this increases the strength when hot water or hot water containing carbon dioxide is injected. Here, "semispherical" also means approximately hemispherical, and may be a blunt shape without any localized protrusions. Therefore, the end 31-5 of the branching tube portion 31-1 does not have to completely coincide with the center line 40 of the branching tube portion 31-1 (the center line 40 when hot water or hot water containing carbon dioxide is sealed inside).
6, the tube main body 31 may have a configuration in which the ends 31-5 of the two branched tube parts 31-1 are positioned outside the center line 40 of the branched tube part 31-1. With such a configuration, it becomes easier to wear the heating device when hanging it around the neck.

Regarding the size of the tube body 31, it is preferable that the total length of the curved or bent longitudinal direction of the tube body 31 is 30 cm or more and 60 cm or less, so that it can easily come into contact with the entire neck and clavicle area of the shoulders when worn around the neck as a heating device. In addition, it is preferable that the inner diameter (inner diameter of the short cross section) of the internal space when hot water or hot water containing carbon dioxide gas is enclosed in the tube body 31 is 6 cm or less. Furthermore, it is preferable that this inner diameter is larger on the end side of the tube body 31 than on the injection port 11 side when hot water or hot water containing carbon dioxide gas is enclosed in the tube body 31, because this makes it easier to stabilize when worn around the neck.

<Injection port>
Next, the configuration of the injection port portion 11 connected to the above-mentioned cylindrical main body portion 31 will be described in detail.

The inlet 11 is connected to the tube body 31, and can inject and seal hot water containing carbon dioxide gas into the tube body 31, and can discharge the enclosed hot water containing carbon dioxide gas. In other words, the inlet 11 is openable and closable, and can seal the tube body 31. As long as the inlet 11 has such a configuration, there is no other limitation. For example, as shown in Figs. 1 to 6, the inlet 11 has a detachable cap 15 and a cap mounting part, and the inner circumference of the cap 15 and the outer circumference of the cap mounting part have male and female threads (spiral threads), which can be screwed together to be detachable and sealed. Furthermore, the cap 15 may be completely detachable from the heating tool container 100, or may be connected to the cap mounting part by a hinge part or the like. It may also be a non-detachable configuration, such as a sliding type in which the opening is opened and closed by sliding a cap-shaped member.
By being provided with such an injection port portion 11, the heating device container 100 of this embodiment can not only be used as a heating device by sealing hot water containing carbon dioxide gas in the tubular main body portion 31, but can also be used repeatedly as a heating device by replacing the hot water containing carbon dioxide gas inside the tubular main body portion 31 through the injection port portion 11.

The heating device container 100 according to this embodiment has a configuration in which one inlet 11 as described above is connected to the region of the tube body 31 excluding the end. If the inlet 11 is connected to the end of the tube body 31, the tube body 31 may become biased when injecting hot water or hot water containing carbon dioxide gas into the tube body 31, and may deform into an unintended shape as described above. This is not preferable because it may affect the stability and adhesion of the heating device when it is used. For example, as shown in Figures 1 to 6, if the inlet 11 is connected to the center part of the curved or bent length of the tube body 31 when divided into thirds (for example, connected to the curved or bent part of the tube body 31), it is particularly preferable because it is less likely to cause bias as described above.

The size of the inlet 11 is not limited, but the opening diameter of the inlet 11 may be large enough to easily inject hot water, hot water containing carbon dioxide, and a carbon dioxide gas generating agent. Furthermore, the inlet 11 is preferably large and made of a material that can function as a grip when injecting hot water containing carbon dioxide into the heating tool container 100 according to this embodiment, or when using the resulting heating tool. Therefore, although resin or metal is shown as a suitable material for the inlet 11, from the viewpoint of reducing the weight of the heating tool container 100 according to this embodiment, it is more preferable that the inlet 11 is made of a thermoplastic resin such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), nylon (Ny), acrylonitrile-butadiene-styrene copolymer (ABS), polyethylene terephthalate (PET), polylactic acid (PLA), polycarbonate (PC), or a resin material such as a cast hardening resin such as an epoxy resin or a urethane resin. The same applies when the cap 15 described above is provided.

In addition, the injection port 11, which also functions as a gripping portion, is preferably configured to be easily gripped with one hand. For example, in the embodiment of Figures 1 to 6, the preferred diameter and length of the cap 15 and cap attachment portion of the injection port 11 (the opening diameter of the injection port 11 and its vertical length) are both 20 mm to 100 mm, and more preferably 30 mm to 60 mm. By setting the diameter and length in this way, the heating device container 100 according to this embodiment or the obtained heating device can be easily gripped with one hand.
Furthermore, the heating device container 100 according to this embodiment may be configured such that a portion of the tube main body 31 and a portion including the injection port 11 are integrated together to function as a grip portion.

The injection port 11 must be connected to an area of the tube body 31, described below, excluding the area that may come into contact with the user's skin. This is because when using a heating device in which hot water containing carbon dioxide gas is enclosed in the heating device container 100 according to this embodiment, the injection port 11 is unlikely to come into contact with the neck, etc., and the comfort of the heating device is unlikely to be reduced.

When the heating device container 100 according to this embodiment, which has the above-mentioned tube body 31 and inlet 11, is filled with hot water containing carbon dioxide gas to form a heating device, and is hung around the neck with the end of the tube body 31 positioned on the front side of the body as shown in FIG. 7, the center of gravity of the heating device is positioned forward of the central axis of the neck or shoulder (on the front side of the body), and the heating device is stably held in close contact from the neck to the shoulder and chest. This is very convenient because the user does not need to hold the heating device with their hands and can keep both hands free when using the heating device. In addition, because the center of gravity of the heating device is positioned forward of the central axis of the neck or shoulder, the weight of the heating device is particularly likely to be placed around the collarbone, and the warming effect and blood circulation promotion effect are easily exerted around the collarbone and other areas.

[Laminated resin film]
Next, the configuration of the laminated resin film 25 forming the tube main body 31 of the heating device container 100 according to this embodiment will be described in detail with reference to FIG.

The laminated resin film 25 forming the tube body 31 of the heating device container 100 according to this embodiment is configured by laminating multiple resin film layers, for example as shown in FIG. 8. Here, a resin film layer is a film layer made of a resin material (containing a resin material as the main component), and therefore the laminated resin film 25 is also made of a resin material. Note that "containing as the main component" means that it contains 80% or more by mass, more preferably 90% or more, and even more preferably 95% or more.

The laminated resin film 25 is water-impermeable as a whole. As a result, when hot water containing carbon dioxide gas is sealed inside the heating device container 100 according to this embodiment to form a heating device, the hot water containing carbon dioxide gas does not come into direct contact with the skin that is in contact with the laminated resin film 25 forming the tube main body 31, so evaporative cooling does not occur when the water evaporates. Therefore, the warming effect is greater than when hot water, such as in a hot bath, comes into direct contact with the skin. Note that water-impermeable here means that it does not allow liquids such as water to pass through. However, the laminated resin film 25 may have permeability to water vapor, which is a gas.

Furthermore, the laminated resin film 25 forming at least the region of the tube main body 31 that can come into contact with the skin of the user has a carbon dioxide gas permeability of 10 L/( ^m2 ·day·atm) or more and 1,000,000 L/( ^m2 ·day·atm) or less, measured at 23°C and 0% relative humidity according to JIS K7126-1. The laminated resin film 25 forming at least this region includes a viscoelastic film layer 21 as the outermost layer, and this viscoelastic film layer 21 has dynamic viscoelasticity with a loss tangent tan δ value of 1.0 or more obtained by measurement at 40°C and a frequency of 2 Hz. The entire laminated resin film 25 forming the tube main body 31 (entire region) may have the above carbon dioxide gas permeability. In addition, the entire laminated resin film 25 forming the tube main body 31 (all regions) may have a layer structure including the viscoelastic film layer 21 as described above in the outermost layer, or may have a layer structure including the viscoelastic film layer 21 in layers other than the outermost layer. Here, the "outermost layer" refers to the layer disposed on the outermost side of the container when the tube main body 31 is formed by the laminated resin film 25. With this configuration, when the tube main body 31 is placed on the skin around the neck or the skin around the clavicle of the shoulder in a state where hot water containing carbon dioxide gas is enclosed in the tube main body 31, the dynamic viscoelasticity of the viscoelastic film layer 21 allows the tube main body 31 to follow at a micro level. This followability allows the heating device to adhere closely to the skin, and thus provides a special effect of providing a sense of relaxation in addition to the warmth. In other words, the high followability from the neck to the shoulders and chest allows a state in which softness, skin compatibility, and a sense of relaxation are all achieved at the same time. Furthermore, the carbon dioxide gas contained in the enclosed carbon dioxide-containing hot water can be sufficiently transferred to the skin through the laminated resin film 25 .
Here, the "area that can come into contact with the user's skin" in the tube main body 31 includes not only the area where the tube main body 31 can come into contact with the skin of the neck when the heating device is hung around the neck of the user, but also areas where the tube main body 31 can come into contact with the skin of other parts of the neck, such as the shoulders and chest. The same applies below.

From the viewpoint of achieving both carbon dioxide gas permeability and durability, the carbon dioxide gas permeability of the laminated resin film 25 forming the above-mentioned region, measured in accordance with JIS K7126-1 under conditions of 23°C and 0% relative humidity, has a lower limit of 10 L/( ^m2 day atm) or more, more preferably 13 L/( ^m2 day atm) or more, even more preferably 15 L/( ^m2 day atm) or more, and even more preferably 16 L/( ^m2 day atm) or more. The upper limit is 1,000,000 L/( ^m2 -day-atm) or less, preferably 1,000 L/( ^m2 -day-atm) or less, more preferably 100 L/( ^m2 -day-atm) or less, even more preferably 50 L/( ^m2 -day-atm) or less, even more preferably 25 L/( ^m2 -day-atm) or less, and even more preferably 20 L/( ^m2 -day-atm) or less. This allows the carbon dioxide gas to be efficiently transferred from the carbon dioxide gas-containing hot water to the skin through the laminated resin film 25 when used as a heating device, thereby providing sufficient blood circulation promotion and strength for repeated use.

The above-mentioned viscoelastic film layer 21 has dynamic viscoelasticity in which the loss tangent tan δ value obtained by measurement at a frequency of 2 Hz at 40°C is 1.0 or more, and further preferably has dynamic viscoelasticity in which the peak value of the loss tangent tan δ obtained by measurement at a frequency of 2 Hz at 30 to 60°C is 1.0 or more, more preferably 2.0 or more, and the loss tangent tan δ value obtained by measurement at a frequency of 2 Hz at less than 25°C is less than 1.0.
With the viscoelastic film layer 21 having such dynamic viscoelasticity, the surface in contact with the skin can deform to follow the body shape at a scale less than the thickness of the viscoelastic film layer 21, i.e., at a micro level, at 30 to 60°C, improving the conformity to the skin and also improving heat conduction and carbon dioxide transfer. This allows for a high warming effect and blood circulation promotion effect. On the other hand, at temperatures below 25°C, the viscoelastic film layer 21 is less likely to deform than at 30 to 60°C. With the tube main body 31 formed of the laminated resin film 25 including the viscoelastic film layer 21 having such temperature-dependent dynamic viscoelasticity, it is easy to inject hot water or the like at a specific temperature because it exhibits elastic behavior before the injection of hot water or the like, and exhibits viscous behavior after the injection of hot water or the like, resulting in excellent conformity to the skin.
The dynamic viscoelasticity can be measured, for example, by a DMS measuring device (ARES-G2: TA Instrument Japan Inc.).

The surface of the skin is made up of skin ridges and skin grooves, and the size and shape of these skin ridges and skin grooves vary depending on the part of the body. However, the viscoelastic film layer 21 with dynamic viscoelasticity described above is highly preferable because it can follow any part of the body at a microscopic level due to its viscous properties. This is because the viscoelastic film layer 21 has a peak value of a specified loss tangent tan δ of 1.0 or more in the temperature range of hot water, which results in fine irregularities appearing on the film surface in this temperature range, enabling good conformity to the irregularities on the skin, i.e., the skin ridges.

This conformability can also be evaluated by the Sq value, which represents the standard deviation of the height of the unevenness and the roughness of the unevenness. From the viewpoint of good conformability to the skin, the Sq value of the surface of the viscoelastic film layer 21 is preferably 9 μm or more, more preferably 10 μm or more, and even more preferably 11 μm or more. From the viewpoint of durability, it is preferably 16 μm or less, more preferably 15 μm or less, and even more preferably 13 μm or less. This Sq value is measured by the method described in Experimental Example 2 below.

A suitable example of the resin material constituting such a viscoelastic film layer 21 is, for example, a copolymer (4-methyl-1-pentene α-olefin copolymer) of 4-methyl-1-pentene and other α-olefins (propylene, ethylene, etc.) as disclosed in JP 2016-121322 A. A film made of this 4-methyl-1-pentene α-olefin copolymer is water impermeable and has a high affinity with carbon dioxide gas, so that the solubility and permeability of carbon dioxide gas in hot water containing carbon dioxide gas into the film is very high, and further, the peak value of the loss tangent tan δ obtained by measurement at a frequency of 2 Hz at 30 to 60°C is also very high. On the other hand, the value of the loss tangent tan δ obtained by measurement at a frequency of 2 Hz at less than 25°C is low.

The laminated resin film 25 forming the tube body 31 of the heating device container 100 according to this embodiment is non-permeable, and further, at least the area of the tube body 31 that can come into contact with the user's skin has the above-mentioned carbon dioxide gas permeability, and the layer structure has the above-mentioned viscoelastic film layer 21 as the outermost layer of this area. However, since this makes it easier to form the tube body 31 and provides an excellent balance between softness and durability, it is preferable that this laminated resin film 25 has a three-layer structure formed by sandwiching an intermediate film layer 23 made of a styrene-based elastomer between the above-mentioned viscoelastic film layers 21.

For example, as shown in FIG. 8, a three-layer structure in which the entire laminated resin film 25 has a viscoelastic film layer 21 laminated on both surfaces of an intermediate film layer 23 made of a styrene-based elastomer is exemplified as a preferred example. In this example, as shown in FIG. 8, the laminated resin film 25 does not allow the carbon dioxide-containing hot water enclosed in the tube main body 31 to pass through, but the carbon dioxide contained in the carbon dioxide-containing hot water can pass through (arrow in FIG. 8), and further, the outermost viscoelastic film layer 21 has the dynamic viscoelasticity described above. In addition, from the viewpoint of achieving both softness and durability, it is more preferable that the intermediate film layer 23 is made of a styrene-based elastomer (SEBS), which is a copolymer of polystyrene, polyethylene, and polybutylene.

Alternatively, this laminated resin film 25 may have a two-layer structure with a viscoelastic film layer 21 on the outer layer side, which includes the area that may come into contact with the user's skin, and a resin film layer made of a styrene-based elastomer or the like on the inner layer side that may come into contact with the enclosed hot water or hot water containing carbon dioxide gas.

The total thickness of the laminated resin film 25 in the above-mentioned region and the other regions is more preferably 200 μm to 700 μm, more preferably 250 μm to 550 μm, and even more preferably 250 μm to 450 μm, in order to obtain favorable carbon dioxide gas permeability, dynamic viscoelasticity, durability, etc. The laminated resin film 25 having such a total thickness has a thermal conductivity of 0.1 W/(m·K) or more, and even more preferably 0.15 W/(m·K) or more, and is therefore very preferable in terms of sufficient warming effect. The thickness of the viscoelastic film layer 21 provided on the outermost layer is more preferably 50 μm to 200 μm, more preferably 60 μm to 150 μm, and even more preferably 70 μm to 100 μm. In the case of the laminated resin film 25 having the three-layer structure described above, the thickness of the intermediate film layer 23 is preferably 100 μm to 400 μm, more preferably 120 μm to 300 μm, and even more preferably 150 μm to 200 μm. The thicknesses of the two viscoelastic film layers 21 sandwiching the intermediate film layer 23 are preferably the same as above.
By forming the tube body 31 from such a laminated resin film 25, it is possible to obtain a heating device container 100 that is excellent in thermal conductivity, carbon dioxide gas permeability, dynamic viscoelasticity, and durability.

The heating tool container 100 according to the present embodiment as described above has high skin conformability, excellent carbon dioxide gas permeability, and is water impermeable. Therefore, by using the heating tool obtained by sealing hot water containing carbon dioxide gas in the heating tool container 100 and hanging it around the neck (including not only applying it directly to the skin but also applying it over clothing), it is possible to obtain a high warming effect and a high circulation promotion effect (blood circulation promotion effect) in the blood vessels, lymphatic vessels, lymph nodes, etc. of the neck, shoulders, and chest by the heat and carbon dioxide gas penetration. In addition, due to the high conformability of this heating tool, a comfortable feeling and a sense of relaxation can be obtained. And, the heating tool obtained using the heating tool container 100 according to the present embodiment is also characterized in that it can obtain remote effects in areas other than the neck, shoulders, and chest by simply hanging it around the user's neck.

Furthermore, the heating device container 100 according to this embodiment can be used in the bathroom by pouring in hot water containing carbon dioxide gas from a bathtub (e.g., hot water containing bath salts) into it, and because it is non-permeable, it can also be easily used outside the bathroom (e.g., in an office) by sealing hot water and a carbon dioxide gas generating agent in the heating device container 100.
Furthermore, the heating device container 100 according to this embodiment can increase the carbon dioxide concentration of the carbon dioxide-containing hot water contained therein to a level higher than that of the hot water in a bathtub containing bath salts, and can release the carbon dioxide gas gradually and continuously outside the container. Furthermore, since the hot water inside the heating device is not in direct contact with the skin, the surface of the skin is less susceptible to the effects of water evaporative cooling and water absorption by the skin.

The temperature of the hot water or hot water containing carbon dioxide gas poured into the heating tool container 100 according to this embodiment is preferably 35°C or higher and 55°C or lower, since this is more likely to produce a warming effect and blood circulation promotion effect. When carbon dioxide gas-containing water or water and a carbon dioxide gas generator are poured into the heating tool container 100 according to this embodiment and heated, it is also preferable that the water temperature after heating is in the above range. And, since the followability of the viscoelastic film layer 21 becomes more preferable and the warming effect and blood circulation promotion effect are further enhanced, it is even more preferable that the above temperature is 35°C or higher and 45°C or lower. Also, if the temperature of the carbon dioxide gas-containing hot water enclosed therein drops during use as a heating tool, it is possible to heat the heating tool as it is in a microwave oven or the like to raise the temperature of the carbon dioxide gas-containing hot water enclosed therein.

The heating device container 100 according to this embodiment can be manufactured by joining and molding one or more sheets of the laminated resin film 25 by heat sealing or the like to form the tube main body 31 having the shape described above, and then connecting the injection port 11 described above to a predetermined position of the tube main body 31.

[About the heating set]
The heating device container 100 according to this embodiment is exemplified by the embodiment described above, but further, in this embodiment, it may be a heating device set including such a heating device container 100 and a carbon dioxide gas generating agent package.

For example, a heating device set may be provided that includes the heating device container 100 according to this embodiment, and a carbon dioxide gas generating agent package that is packaged with a carbon dioxide gas generating agent that generates carbon dioxide gas when mixed and dissolved in warm water and that is injected into the heating device container 100 together with warm water.
Such a heating device set can be obtained very easily by simply preparing hot water, injecting the hot water and the carbon dioxide gas generating agent into the tube body 31 through the injection port 11, and sealing it. Alternatively, as described above, water and the carbon dioxide gas generating agent may be injected into the tube body 31 and then heated to produce a heating device.

Here, the carbon dioxide gas generating agent is not particularly limited as long as it is capable of generating carbon dioxide gas when mixed and dissolved in hot water, but a mixture of carbonate and organic acid is shown as a suitable example, and it may further contain inorganic salts or oily components. Furthermore, it is more preferable that the carbon dioxide gas generated when mixed and dissolved in hot water has a high foam-breaking property. The shape of the carbon dioxide gas generating agent is also not particularly limited, and it may be solid, powdered, granular, etc., but it is preferable that it is powdered or granular from the viewpoint of improving solubility in hot water. Specifically, the carbon dioxide gas generating agent described in JP2015-231963A and the carbon dioxide gas generating agent described in JP2015-113320A are shown as preferred embodiments.

Furthermore, the carbon dioxide gas generating agent package is preferably an individually packaged carbon dioxide gas generating agent that generates an amount of carbon dioxide gas that can be contained together with hot water inside the cylindrical container body 31 and the inlet part 11 of the heating tool container 100 according to this embodiment without breaking them. For example, it is preferable that the carbon dioxide gas generating agent is individually packaged so that when mixed and dissolved in 40°C hot water, which has a volume equal to the internal volume (maximum volume that can be filled with hot water) of the heating tool container 100 provided in the set, the carbon dioxide gas concentration of the hot water is 40 ppm to 1500 ppm, more preferably 100 ppm to 1200 ppm, and even more preferably 500 ppm to 1000 ppm. Note that this carbon dioxide gas concentration range is the concentration assumed to be dissolved in 40°C hot water for a range exceeding the carbon dioxide gas saturation amount (1000 ppm) of 40°C hot water. The specific amount of carbon dioxide gas generating agent to be individually packaged may be adjusted appropriately depending on the capacity of the heating device container 100 used and the amount of hot water used.
With a heating device set comprising the heating device container 100 according to this embodiment and an individually wrapped carbon dioxide generating agent package, a heating device containing hot water containing carbon dioxide at an appropriate carbon dioxide concentration can be easily obtained by simply preparing hot water or water separately, without risk of the container being damaged by excessive carbon dioxide generation within the container.

The carbon dioxide gas generating agent package can be obtained by known filling and packaging methods using known materials such as resin film as the packaging material. It is more preferable that the carbon dioxide gas generating agent package is sealed so that it does not react with moisture during storage. There are also no particular limitations on the shape of the package, but it is preferable that it has a shape that allows easy injection and filling into the injection port 11 of the heating device container 100.

The following describes examples of the present invention, but the present invention is not limited to the following examples, and various modifications are possible within the technical concept of the present invention.

(Experimental Example 1)
The following experiments were carried out on the film used as the viscoelastic film layer of the laminated resin film forming the cylindrical main body of the heating device container according to the present invention.

As a film to be used as a viscoelastic film layer, a film composed of 4-methyl-1-pentene-α-olefin copolymer was prepared, which is water-impermeable, has high carbon dioxide gas permeability, and has a loss tangent tanδ value of 1.5 measured at a frequency of 2 Hz at 40°C. Three types of film were prepared: 50 μm thick (sample 1), 100 μm thick (sample 2), and 300 μm thick (sample 3). In addition, a 40 μm thick film (sample 4) composed of linear low-density polyethylene (LLDPE) was also prepared, which is water-impermeable but has low carbon dioxide gas permeability, and has a loss tangent tanδ value of less than 0.1 measured at a frequency of 2 Hz at 40°C.

The carbon dioxide gas permeability measured according to JIS K7126-1 at 23° C. and a relative humidity of 0% is as follows:
Sample 1: 70 L / ( ^m2 day atm)
Sample 2: 50 L / ( ^m2 day atm)
Sample 3: 25 L / ( ^m2 day atm)
Sample 4: 3 L / ( ^m2 day atm)

Five glass bottles with a capacity of 500 mL were prepared, each filled to the top with 40° C. carbon dioxide-containing hot water with a carbon dioxide concentration of 990 ppm. The films of Samples 1 to 4 were placed over the mouths of the glass bottles filled with the carbon dioxide-containing hot water, taking care not to trap air, and the mouths were closed by placing an arm over the films to close the mouths. In this state, the carbon dioxide-containing hot water in the glass bottles was stirred with a stirrer for 30 minutes.
As a control, one of the glass bottles filled with hot water containing carbon dioxide was not covered with a film, and the mouth of the bottle was closed by placing an arm on it so as not to trap air in it, and this state was maintained for 30 minutes.

After 30 minutes, the carbon dioxide concentration of the carbon dioxide-containing hot water in these containers was measured using a carbon dioxide concentration meter (IM-32P ion/pH meter, manufactured by DKK Toa Corporation). Separately, as a preliminary experiment to confirm the amount of carbon dioxide adsorption to the film, a similar experiment was also conducted in which a sealed lid was placed in place of the arm in the above experiment, and the carbon dioxide concentration in the carbon dioxide-containing hot water after 30 minutes was similarly measured. It was confirmed that the carbon dioxide concentration of the hot water in the container in this preliminary experiment was 960 ppm (amount of carbon dioxide adsorption to the film was 30 ppm) (not performed on the film of Sample 4). From these data, the amount of carbon dioxide transferred to the skin of the arm in this experiment, i.e., the amount of carbon dioxide permeating the film, was calculated. The results are shown in Table 1 below.

These results show that 17.2% of carbon dioxide permeated through Sample 1, 14.1% through Sample 2, and 11.1% through Sample 3 and transferred to the skin, indicating that these films have significantly higher carbon dioxide permeability than Sample 4 (which had a carbon dioxide permeability of less than 2.0%). In other words, it was revealed that Samples 1 to 3 were able to transfer a large amount of carbon dioxide contained in 40°C carbon dioxide-containing hot water through the film to the skin in contact with the film.

(Experimental Example 2)
Further experiments were carried out on the films used as the viscoelastic film layer as follows.

First, three plate-like members (manufactured by Shiseido Co., Ltd., SPF MASTER standard plate PA-01) were prepared as standard skin surface irregularity models.
Then, four guides were attached to the plate-like member at positions that would result in a size of 20 mm square, and each film of Sample 1 (50 μm thick), Sample 3 (300 μm thick), or Sample 4 (LLDPE, 40 μm thick) used in Experimental Example 1 was cut out to a size that exceeded the four guides and adhered to the plate-like member. Next, a two-liquid kneading and solidifying agent (GC Corporation, Fusion II Monophase Type) was spread in an approximately circular shape on top of the films, and immediately after that, a slide glass was placed on top of the two-liquid kneading and solidifying agent, and a load was applied to the area of the two-liquid kneading and solidifying agent by a weight so that the load was 200 gf/cm ^2. In addition to this, a plate-like member was also treated in the same manner as above, except that the film was not placed on the plate-like member, as a control.

The loaded state was left for 20 minutes or more to allow the two-liquid kneading and solidifying agent to fully solidify, and then the load was removed. The film, the two-liquid kneading and solidifying agent, and the plate-shaped member (the control was the two-liquid kneading and solidifying agent and the plate-shaped member) were slowly inserted with a microspatula and peeled off, taking great care not to damage the uneven surface. Furthermore, for each sample and control peeled off from the plate-shaped member described above, a Pt coating was applied to the plate-shaped member contact surface (the film uneven surface or the two-liquid kneading and solidifying agent uneven surface) by sputtering treatment using an ELIONIX INC. Superfine Coater ESC101 under conditions of a target current of 1.6 mA and a Pt electrode coating time of 3 to 10 minutes.
All the treatments up to this point were carried out in an environment at 40° C., and all the materials were left to stand in an environment at 40° C. for one day before use.

For each of the samples and controls thus obtained, the Pt-coated film surface (the control was the surface of the two-liquid kneading solidification agent) was observed using a Keyence Corporation "High-Speed 3D High Scope VR-3100" to obtain a 3D image of unevenness, and the root mean square height (Sq: a representative value in accordance with ISO25178, which corresponds to the standard deviation of the unevenness height and the unevenness roughness) was calculated from this image as the unevenness roughness.
Specifically, a sample or the like was placed on the observation stage with the film surface facing up, and observed at a magnification of 50 times to obtain a 3D image of unevenness. This 3D image of unevenness is shown in FIG. 9. Then, for this obtained 3D image of unevenness, image pre-processing was performed on the analysis screen of the above-mentioned device under the conditions of height reference point: skin mound corresponding surface (basal surface), waviness removal: 5 (weak), and surface correction: unnecessary (horizontal). Furthermore, in the "surface roughness measurement" mode, a 5 mm square rectangular area that was almost the entire screen was selected to specify the area, and a filter process was performed using a Gaussian noise filter with a high pass of 1 mm or more, and an Sq value was calculated. In addition, a relative value to the value of the control was also obtained.

Furthermore, in order to evaluate the durability of each sample obtained above, the strength was measured. The measurement method was based on JIS K-7127:1999 (based on the tensile test of film, test piece: width 15 mm, measurement length (chuck distance) 30 mm, test speed: 300 mm/min), and the measurement was performed in a 42°C, 40% RH environment in consideration of the usage conditions. Then, the measurement was performed three times for each sample, and the average of the measured values was calculated to obtain the strength data.
The results are shown in Table 2 below.

As can be seen from the uneven 3D image (Figure 9) and Sq value (Table 2), the unevenness of the films of Sample 1 and Sample 3 is clearly more noticeable than that of Sample 4, which indicates that this film has high conformability to the uneven surface of the target. In particular, the difference in unevenness between Sample 1 and Sample 4 is remarkable, and the film of Sample 1 is shown to have very high conformability to uneven surfaces at 40°C. Conversely, Sample 4 has very little unevenness and is shown to have very low conformability to uneven surfaces at 40°C. It was also shown that films with a relative Sq value of 55% or more compared to the control in this experiment have very good conformability to uneven surfaces, and those with an Sq value of 65% or more are particularly good.

On the other hand, as mentioned above, in order to be able to use the heating device repeatedly, durability as well as conformability is necessary. From the viewpoint of improving the conformability to uneven surfaces and the durability of the film, it was estimated that the Sq value of the film is preferably 9 μm or more and 16 μm or less, more preferably 10 μm or more and 15 μm or less, and even more preferably 11 μm or more and 13 μm or less.

Example 1
The following tests were carried out on the heating device obtained using the heating device container according to the present invention.

A 75 μm thick film made of the same material as the sample film used in Experimental Examples 1 and 2 was used as the viscoelastic film layer, and a 150 μm thick film made of a styrene-based elastomer (SEBS), a copolymer of polystyrene, polyethylene, and polybutylene, was used as the intermediate film layer to prepare a three-layer laminated resin film in which the intermediate film layer was sandwiched between the viscoelastic film layers as shown in FIG. 8. The total thickness of this three-layer laminated resin film was 300 μm, and the carbon dioxide gas permeability of this three-layer laminated resin film measured under conditions of 23° C. and 0% relative humidity in accordance with JIS K7126-1 was 17 L/(m ² ·day ·atm). Then, a heating device container was prepared in which an inlet part was connected to the curved part of a cylindrical main body part formed of this three-layer laminated resin film and having a substantially U-shaped shape and a substantially circular cross section when carbon dioxide-containing hot water is enclosed therein, as shown in FIG. 1. The radius of curvature of the curved inner circumference of the tube body in this heating tool container is 6.2 cm, the length from the inlet to the end of the tube body is 25 cm (the total length of the curved longitudinal direction of the tube body is 50 cm), and the inner diameter of the tube body when carbon dioxide-containing hot water is enclosed is 5 cm in diameter. Furthermore, this heating tool container was filled with 41.5°C carbon dioxide-containing hot water with a carbon dioxide concentration of 1000 ppm, and the excess air inside was removed and then sealed to obtain a heating tool of the present invention as shown in Figure 2. As a control, a neck pillow-shaped container (approximately U-shaped, radius of curvature of the curved inner circumference: 5.5 cm, inner diameter of the body when carbon dioxide-containing hot water is enclosed: 8.5 cm in diameter) formed of a vinyl chloride film (single layer) that is impermeable to water but has almost no carbon dioxide gas permeability was filled with 41.5°C hot water alone and sealed to produce a heating tool.
The loss tangent tan δ values obtained by measuring the outermost layers of these heating devices (the viscoelastic film layer for the present invention and the polyvinyl chloride film layer for the control) at 40°C or 20°C and a frequency of 2 Hz are shown in the top row of Table 3 below.

Three expert panelists used the two heating devices by hanging them directly around the neck so that they were in contact with the skin from immediately after the injection of carbon dioxide-containing hot water or hot water until 20 minutes later, and evaluated them on the following points (1) to (3).
(1) Ease of use (good balance when worn around the neck, does not fall off easily)
(2) Relieves chills and stiffness (feeling of warmth all the way to the fingers, lightness in the shoulders)
(3) Usability

The evaluation method was as follows: for each of the items (1) to (3), three expert panelists chose the closest score from the following three-level evaluation, and then calculated the average score of the three. The results are shown in Table 3 below. The average scores were rounded off to the nearest integer.
(1) Ease of use 3: It is well-balanced, and both ends of the heating device stay in contact from the neck to the chest for 15 minutes after starting use, and does not slip off the neck.
2: The balance is fairly good, and the heating device can be used without any problems from the start of use until 15 minutes later without slipping off from the neck.
1: The balance is poor and the heating device slips off around the neck within 15 minutes of starting use.
(2) Effect of relieving chills and stiffness 3: After use, the stiffness in the shoulders was relieved and the shoulders felt lighter, and the tips of the fingers were warmed.
2: After using it, the stiffness in my shoulders was relieved and I felt lighter, and my chest was warmed up.
1: After using it, I didn't notice any change in the condition of my shoulders, and only my neck felt warm.
(3) Usability 3: Soft, elastic and resilient, and taut, it adheres comfortably to the skin.
2: Soft, elastic and resilient, slightly lacking in tautness but feels good.
1: Hard, elastic and resilient but not taut, does not adhere to the skin, and feels strange.

These results demonstrate that the heating device of the present invention is much easier to use than the control heating device, has a much higher effect in relieving chills and stiffness, and is soft, firm, and elastic, making it very comfortable to use.
It was also made clear that the heating device of the present invention is less susceptible to deformation, can be used repeatedly, and is highly durable.

The above embodiment encompasses the following technical ideas.
<1> A container for a heating device that is worn around a user's neck and includes a flexible tube body portion formed of a laminated resin film, and an injection port portion that is connected to the tube body portion and is configured to be openable and closable so as to seal the tube body portion,
The laminated resin film is water impermeable,
Furthermore, the laminated resin film forming at least an area of the tube main body that can come into contact with the skin of a user has a carbon dioxide gas permeability of 10 L/( ^m2 ·day·atm) or more and 1,000,000 L/( ^m2 ·day·atm) or less, measured in accordance with JIS K7126-1 at 23°C and 0% relative humidity;
and the laminated resin film forming the region includes a viscoelastic film layer as an outermost layer, and the viscoelastic film layer has dynamic viscoelasticity with a loss tangent tanδ value of 1.0 or more as measured at 40° C. and a frequency of 2 Hz,
The cylindrical main body portion is provided with two branched cylindrical portions that branch into two toward both sides of the injection port portion and are curved or bent.
Container for heating equipment.
<2> The heating device container described in <1>, wherein the tubular main body portion is formed so that the two branched tubular portions approach each other toward their ends at least when hot water or hot water containing carbon dioxide is sealed in the tubular main body portion.
<3> A heating device container as described in <2>, wherein the ends of the two branched tube sections are parallel to each other before hot water or hot water containing carbon dioxide is injected into the tube main body section.
<4> The heating device container according to any one of <1> to <3>, wherein the tube main body is curved and the radius of curvature of the curved inner circumference is 15 cm or less.
<5> A heating device container according to any one of <1> to <4>, wherein the injection port is connected to the central portion when the entire length of the curved or bent longitudinal direction of the tubular main body is divided into thirds.
<6> The heating device container according to any one of <1> to <5>, wherein the lengths from the ends of the two branched tube portions to the injection port portion of the tube main body are different from each other.
<7> The heating device container according to any one of <1> to <5>, wherein the length from the ends of the two branched tube sections to the injection port section of the tube main body is the same.
<8> A heating device container according to any one of <1> to <7>, wherein the ends of the two branched tubular portions of the tubular main body are positioned outside the center line.
<9> The heating device container according to any one of <1> to <8>, wherein the total length of the curved or bent longitudinal direction of the tube main body is 30 cm or more and 60 cm or less.
<10> A heating device container according to any one of <1> to <9>, wherein the inner diameter of the tube main body when hot water or hot water containing carbon dioxide gas is sealed inside is 6 cm or less.
<11> The heating device container according to any one of <1> to <10>, wherein the dynamic viscoelasticity of the viscoelastic film layer is such that a peak value of loss tangent tanδ obtained by measurement at a frequency of 2 Hz at 30 to 60°C is 1.0 or more, and a value of loss tangent tanδ obtained by measurement at a frequency of 2 Hz at less than 25°C is less than 1.0.
<12> The heating device container according to any one of <1> to <11>, wherein the laminated resin film forming the region has a carbon dioxide gas permeability of 15 L/( ^m2 ·day·atm) or more, measured in accordance with JIS K7126-1 at 23°C and 0% relative humidity.
<13> The heating device container according to any one of <1> to <12>, wherein the laminated resin film has a three-layer structure in which an intermediate film layer made of a styrene-based elastomer is sandwiched between the viscoelastic film layers.
<14> The heating device container according to <13>, wherein the intermediate film layer of the laminated resin film is composed of a styrene-based elastomer which is a copolymer of polystyrene, polyethylene, and polybutylene.
<15> The heating device container according to any one of <1> to <14>, wherein the total thickness of the laminated resin film is 200 μm or more and 700 μm or less.
<16> The heating device container according to <15>, wherein the total thickness of the laminated resin film is 250 μm or more and 550 μm or less.
<17> A heating tool set comprising a heating tool container according to any one of <1> to <16> and a carbon dioxide gas generating agent package.
<18> The heating tool set described in <17>, wherein the carbon dioxide gas generating agent package is individually packaged in an amount such that when mixed and dissolved in hot water at 40°C, the volume of which is equal to the internal volume of the heating tool container, the carbon dioxide gas generating agent is in an amount such that the carbon dioxide gas concentration in the hot water is 40 ppm or more.
<19> A carbon dioxide gas generating agent package, which is used together with the heating tool container in the heating tool set described in <18> and in which a carbon dioxide gas generating agent is individually packaged.

100 Heating device container 11 Inlet 15 Cap 21 Viscoelastic film layer 23 Intermediate film layer 25 Laminated resin film 31 Tube main body 31-1 Branch tube portion 31-3 Curved inner circumference 31-5 End of branch tube portion 40 Virtual center line of tube main body (branch tube portion)

Claims (10)

A container for a heating device that is hung around a user's neck and includes a flexible cylindrical body portion formed of a laminated resin film, and an injection port portion that is connected to the cylindrical body portion and is configured to be openable and closable so as to seal the cylindrical body portion,
The laminated resin film is water impermeable,
Furthermore, the laminated resin film forming at least an area of the tube main body that can come into contact with the skin of a user has a carbon dioxide gas permeability of 10 L/( ^m2 ·day·atm) or more and 1,000,000 L/( ^m2 ·day·atm) or less, measured in accordance with JIS K7126-1 at 23°C and 0% relative humidity;
and the laminated resin film forming the region includes a viscoelastic film layer as an outermost layer, and the viscoelastic film layer has dynamic viscoelasticity with a loss tangent tanδ value of 1.0 or more as measured at 40° C. and a frequency of 2 Hz,
The cylindrical main body portion includes two branched cylindrical portions that branch into two toward both sides of the injection port portion, and is curved or bent.
Container for heating equipment. The heating device container according to claim 1, wherein the cylindrical body is formed such that the two branched cylindrical parts approach each other toward the ends at least when hot water or hot water containing carbon dioxide is enclosed in the cylindrical body. The heating device container according to claim 2, wherein the ends of the two branched tube sections are parallel to each other before hot water or hot water containing carbon dioxide gas is injected into the tube main body. The heating device container according to any one of claims 1 to 3, wherein the cylindrical body is curved and the radius of curvature of the curved inner circumference is 15 cm or less. The heating device container according to any one of claims 1 to 4, wherein the lengths from the ends of the two branched tube sections to the inlet section of the tube main body are different from each other. The heating device container according to any one of claims 1 to 5, wherein the dynamic viscoelasticity of the viscoelastic film layer is such that the peak value of loss tangent tan δ obtained by measurement at a frequency of 2 Hz at 30 to 60°C is 1.0 or more, and the value of loss tangent tan δ obtained by measurement at a frequency of 2 Hz at less than 25°C is less than 1.0. The heating device container according to any one of claims 1 to 6, wherein the laminated resin film has a three-layer structure in which an intermediate film layer made of a styrene-based elastomer is sandwiched between the viscoelastic film layers. The heating device container according to any one of claims 1 to 7, wherein the total thickness of the laminated resin film is 200 μm or more and 700 μm or less. A heating tool set comprising a heating tool container according to any one of claims 1 to 8 and a carbon dioxide gas generating agent package. The heating tool set according to claim 9, wherein the carbon dioxide gas generating agent package is individually packaged in an amount such that when mixed and dissolved in hot water at 40°C, the volume of which is equal to the internal volume of the heating tool container, the carbon dioxide gas concentration in the hot water is 40 ppm or more.

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