JP7224673B2 - Simple coffee extractor bag and simple coffee extractor pack - Google Patents

Description

The present invention relates to a simple coffee extractor bag and a simple coffee extractor pack.

Since the quality of coffee deteriorates when it comes into contact with oxygen during storage in either the bean or powder state, it is preferable to avoid contact with oxygen during storage as much as possible.

Therefore, when storing coffee in a bag, it is necessary to have a function to prevent oxygen from entering the bag. On the other hand, the coffee stored in the bag generates carbon dioxide, which may cause the bag to expand and burst. Therefore, a bag for storing coffee needs to have a function of releasing internally generated carbon dioxide to the outside and maintaining an appropriate internal pressure of the bag.

In order to achieve both of these contradictory functions, a method of attaching a check valve to a coffee storage bag is known.

On the other hand, there is a coffee container in which a filter containing a cup of coffee grounds is attached to a holder made of paper or the like, this holder is held in a drinking container such as a cup, and hot water is poured into the coffee grounds to drip coffee. In recent years, simple coffee extractors such as a simple dripper (so-called "drip coffee") or a coffee pack that extracts coffee by immersing a tea pack containing coffee grounds in hot water have been used in other ways. . (Patent Documents 1 and 2)

Japanese Patent Application Laid-Open No. 2004-024700 JP-A-07-016157

When storing such a simple coffee extractor, it is required to prevent oxygen from entering the packaging bag and to allow carbon dioxide to be released from the inside as described above.

However, such simple coffee brewers contain individual cups of coffee in filters or packs, which are individually wrapped. For this reason, providing a bulky and inexpensive component such as a check valve in each package is impractical in terms of storage space and manufacturing costs, and has not been practiced.

For this reason, before being enclosed in a package, powdered coffee or a simple coffee extractor may be left in an open space, aged to release carbon dioxide, and then enclosed in a package. be.

However, aging requires additional work steps, requires storage space, and also causes the flavor of the coffee to deteriorate.

The present invention has been made in view of these points, and provides a simple coffee extractor in which a small amount of powdered coffee is individually packaged while not being bulky and inexpensive. To provide a bag body for a simple coffee extractor which can be packed while preventing the entry of carbon dioxide and allowing the release of carbon dioxide to the outside.

The present invention has been made in view of these points, and provides a simple coffee extractor in which a small amount of coffee is individually packaged while not being bulky and inexpensive. To provide a simple coffee extractor pack including a simple coffee extractor bag capable of being packaged while preventing and allowing the release of carbon dioxide to the outside, and a simple coffee extractor packaged therein. aim.

According to a preferred embodiment of the invention,
A bag body for a simple coffee extractor for packaging a simple coffee extractor formed of a film and containing powdered coffee in a filter,
It has a rectangular planar shape with vertical and horizontal lengths of 80 mm or more and 180 mm or less,
At least one edge of the rectangle is provided with a belt-shaped seal portion having a width of 5 mm or more and 10 mm or less formed by joining opposing films,
The band-shaped seal portion has at least one air passage, one end of which opens to the inside of the bag and the other end of which opens to the outside of the bag, and communicates the inner space of the bag with the outside of the bag. formed,
The ventilation path is composed of a non-bonded portion to which the opposing films are not bonded, and has a length of 40 mm or more and 300 mm or less and a width of 0.5 mm or more and 3 mm or less.
A simple coffee extractor bag is provided.

According to such a configuration, the ventilation path provided in the band-shaped seal portion prevents outside air (oxygen) from entering the bag from the outside, while discharging carbon dioxide generated inside the bag to the outside of the bag. becomes possible.

According to another preferred aspect of the present invention, the number of air passages is one.

According to such a configuration, the configuration of the air passage and the strip-shaped seal portion in which the air passage is formed becomes a simple configuration, so that the bag body can be manufactured easily and inexpensively.

According to another preferred aspect of the invention,
The airway has at least one bent portion.

According to such a configuration, the bent portion provided in the air passage can effectively prevent the outside air (oxygen) from entering from the outside of the bag body.

According to another preferred aspect of the invention,
The band-shaped seal portion is an ultrasonic joint formed by ultrasonic welding.

According to such a configuration, since the strip-shaped seal portion is formed by ultrasonic bonding, it is possible to easily form the non-bonded portion where the film facing the strip-shaped seal portion is not bonded.

According to another aspect of the invention,
A simple coffee extractor pack comprising a simple coffee extractor including a filter part containing powdered coffee and a bag body for packaging the simple coffee extractor,
The bag body has a rectangular planar shape with vertical and horizontal lengths of 80 mm or more and 180 mm or less,
At least one edge of the rectangle is provided with a belt-shaped seal portion having a width of 5 mm or more and 10 mm or less formed by joining opposing films,
The band-shaped seal portion has at least one air passage, one end of which opens to the inside of the bag and the other end of which opens to the outside of the bag, and communicates the inner space of the bag with the outside of the bag. The air passage is formed by a non-bonded portion where the opposing films are not bonded, and has a length of 40 mm or more and 300 mm or less and a width of 0.5 mm or more and 3 mm or less.
There is provided a simple coffee extractor pack characterized by:

According to such a configuration, the air passage provided in the belt-shaped seal prevents outside air (oxygen) from entering the bag from the outside, while allowing carbon dioxide generated from the powdered coffee inside the bag to escape from the bag. can be discharged to

According to another preferred aspect of the invention,
The number of air passages is one.

According to such a configuration, the configuration of the air passage and the strip-shaped seal portion in which the air passage is formed becomes a simple configuration, so that the bag body can be manufactured easily and inexpensively.

According to another preferred aspect of the invention,
The airway has at least one bent portion.

According to such a configuration, the bent portion provided in the air passage can effectively prevent the outside air (oxygen) from entering from the outside of the bag body.

According to another preferred aspect of the invention,
The band-shaped seal portion is an ultrasonic joint formed by ultrasonic welding.

According to such a configuration, since the strip-shaped seal portion is formed by ultrasonic bonding, it is possible to easily form the non-bonded portion where the film facing the strip-shaped seal portion is not bonded.

According to another preferred aspect of the invention,
Nitrogen gas is filled inside.

According to aspects of the invention,
Any one of the above simple coffee extractor pack manufacturing methods,
A step of enclosing the simple coffee extractor in the bag,
The encapsulating step is performed without an aging process of aging the powdered coffee after roasting,
A method for manufacturing a simple coffee extractor pack is provided.

According to such a configuration, since aging which takes time and deteriorates quality such as flavor of powdered coffee is not required, the simple coffee extractor pack can be manufactured easily and quickly, and simple coffee extraction can be performed. It is also possible to avoid deterioration in the quality of the coffee in the utensil.

According to one aspect of the present invention, a simple coffee extractor in which a small amount of coffee is individually packaged while not being bulky and inexpensive is provided to prevent oxygen (external air) from entering the interior and to prevent carbon dioxide from entering the exterior. A simple coffee brewer bag is provided that can be packaged while allowing carbon release.

According to another aspect of the present invention, a simple coffee extractor in which a small amount of coffee is individually packaged, which is not bulky and inexpensive, can be prevented from entering the inside of oxygen (external air) and can be prevented from entering the outside. A simple coffee brewer pack is provided that includes a simple coffee brewer bag that can be packaged while allowing carbon dioxide release, and a simple coffee brewer packaged therein.

1 is a schematic perspective view of a bag body for a simple coffee extractor according to an embodiment of the present invention; FIG. Fig. 2 is a schematic perspective view showing a simple coffee extractor (drip coffee) housed in a bag in a used state (unfolded state); FIG. 4 is a schematic enlarged view for explaining the structure of the air passage of the bag according to the embodiment of the present invention; It is drawing which shows the planar shape of the ventilation path of a modification. It is drawing which shows the planar shape of the ventilation path of a modification. It is drawing which shows the planar shape of the ventilation path of a modification. 1 is a drawing schematically showing the configuration of a welding device (ultrasonic bonding machine) used in the ultrasonic welding method of the manufacturing method of the present embodiment. FIG. 4 is a schematic perspective view showing the surface of an anvil used in an ultrasonic bonding apparatus; 1 is a schematic drawing showing a simple coffee extractor pack 1'. FIG. 4 is a schematic perspective view of a bag body for a simple coffee extractor according to another embodiment of the present invention; It is a table|surface which shows the evaluation result of the Example of this invention.

A bag 1 for a simple coffee extractor according to a preferred embodiment of the present invention will be described below.
FIG. 1 is a schematic perspective view of a bag 1 for a simple coffee extractor according to this embodiment, and FIG. Fig. 2 is a schematic perspective view showing drip coffee 2 in use (deployed).
In the present application, for the sake of clarity, the dimensions, proportions, etc. of each element in the drawings are not represented accurately.

As shown in FIG. 2, the simple coffee extractor 2 packaged in the bag 1 of the present embodiment contains a cup of ground coffee 4 (for example, about 4 to 20 grams). It has a filter portion 6 accommodated therein and a holding portion 8 for attaching the filter portion 6 to a drinking container such as a cup. It is a coffee extractor for drip extracting coffee by pouring hot water into 4. As described above, this simple coffee extractor is traded under the name of "drip coffee" or the like.

In addition to the so-called "drip coffee" of the present embodiment shown in FIG. 2, the "simple coffee extractor" of the present invention uses one cup of powdered coffee in a tea pack or the like. Other simple coffee extractors such as a simple coffee extractor that extracts coffee from a single cup of ground coffee, such as a coffee pack that is housed in a pack that is contained in a pack and extracts coffee by immersing the pack in hot water Also includes tools.

The bag body 1 of the present embodiment is a bag body used for individually packaging simple coffee brewing tools such as the simple coffee brewing tool 2 one by one. FIG. 1 shows the bag body 1 in a state in which a simple coffee extractor 2 in an undeveloped state is accommodated therein, the upper edge is not joined, and the upper end is open. The bag body of the present invention includes an unfinished bag body with an open upper end as shown in FIG. Also included are closed bags.

The bag body 1 of the present embodiment is formed by folding a horizontally long barrier film at the center in the width direction, overlapping both side edges of the barrier film so as to face each other, and forming the upper and lower ends and the side where the films are overlapped so as to face each other ( It is a substantially rectangular planar bag body formed by sealing one side end.

One side end of the bag body 1 is a band-shaped seal portion 10 extending over the entire length of one side edge of the bag body 1, and a bottom seal portion 12 is formed at the lower end. In this embodiment, after the simple coffee extractor 2 is accommodated inside the bag 1, the upper end is sealed.

A barrier film is preferable as the film constituting the bag 1 . Specific examples of barrier films include known films such as polymer films deposited with any one of silica, alumina, and aluminum, and metal foil layers. A laminate film obtained by laminating a barrier film and another film can also be used. Barrier paper in which a paper material, a barrier coating layer and a heat seal layer are laminated can also be preferably used.

The film used for the bag 1 preferably has a thickness of 15 μm or more and 150 μm or less, more preferably 20 μm or more and 100 μm or less. If the thickness of the film is less than 15 µm, the strength of the bag may be insufficient, and if it exceeds 150 µm, it may be disadvantageous in terms of cost. The film used for the bag 1 may be transparent or opaque, but it is preferable to use an opaque packaging film in order to prevent deterioration of the contents due to sunlight. In addition, a film having a printed surface may be used to enhance the design.

As for the size of the bag 1, the length of each of the vertical and horizontal sides is 80 mm or more and 180 mm or less, preferably 90 mm or more and 160 mm or less. By setting the length of one side to 80 mm or more, it is possible to accommodate a simple coffee extractor inside. On the other hand, by setting the size to 180 mm or less, the internal space of the bag can be filled with carbon dioxide generated from the powdered coffee in the simple coffee extractor housed inside.

In the bag body 1 of the present embodiment, the band-shaped seal portions 10 at the side ends are ultrasonic seal portions formed by ultrasonically bonding opposing films to each other. A bottom seal portion 12 at the lower end and a top seal (not shown) at the upper end are heat-sealed portions formed by heat sealing.

The width (W) of the strip-shaped seal portion 10 on the side edge of the bag body 1 is preferably 5 mm or more and 10 mm or less, more preferably 6 mm or more and 9 mm or less. By setting the width of the belt-shaped seal portion 10 to 5 mm or more, it becomes possible to maintain the strength, and by setting the width to 10 mm or less, uniform bonding by ultrasonic waves becomes possible.

The bottom seal part 12 of the bag body 1 and the top seal part formed by, for example, heat sealing at the upper end after containing the simple coffee extractor 2 etc. are not limited in shape and width, but the width is set to 5 mm or more and 10 mm or less. It is common to be

One air passage 14 is provided in the belt-shaped seal portion 10 . It is a tunnel-shaped portion formed by a non-bonded portion in which the films are not bonded, provided in the band-shaped seal portion 10 in which the films facing each other are ultrasonically bonded.

FIG. 3 is a schematic enlarged view for explaining the configuration of the ventilation path 14. As shown in FIG. As shown in FIG. 3, in the bag body 1 of this embodiment, the ventilation path 14 extends in a substantially W shape.

One end 16 of the air passage 14 opens to the inside of the bag 1 and the other end 18 opens to the outside of the bag 1 to communicate the internal space of the bag 1 with the outside of the bag 1 .

The length of the air passage 14 is set to 40 mm or more and 300 mm or less. Also, the length of the air passage 14 is preferably 50 mm or more and 280 mm or less, more preferably 70 mm or more and 250 mm or less. By setting the length to 40 mm or more, it is possible to sufficiently suppress the intrusion of oxygen into the bag 1, and by setting the length to 300 mm or less, it is possible to appropriately discharge carbon dioxide from the bag 1. become.

The length of the airway 14 means the length from one end 16 to the other end 18 measured along the central axis of the airway 14 of substantially constant width.

In the bag body 1 of this embodiment, the width of the ventilation path 14 is set to 0.5 mm or more and 3 mm or less.
The width of the air passage 14 is preferably 0.6 mm or more and 2 mm or less, more preferably 0.7 mm or more and 1.5 mm or less. If the width of the air passage is less than 0.5 mm, it may be difficult to form the air passage with a uniform width. Moreover, if the width exceeds 3 mm, it may become difficult to discharge carbon dioxide appropriately.

As described above, in the bag body 1 of the present embodiment, the ventilation path 14 has a shape extending in a substantially W shape in plan view. Therefore, as shown in FIG. 3, the ventilation path 14 is provided with four bent portions 20, 22, 24, and 26 at the intermediate portion.

More specifically, the air passage 14 has five straight portions 28, 30, 32, 34, 36 each having a length of 10 mm to 20 mm and a width of 0.7 mm to 1.5 mm. , 26 to form an angle of 150-175 degrees. Outwardly of this intermediate portion are provided 3 mm long end portions 42,44 extending through the folds 38,40.

FIG. 4 is a drawing showing a planar shape of the air passage 46 of the modified example.
The air passage 46 has two linear portions 48 and 50 with a length of 25 mm to 40 mm and a width of 0.7 mm to 1.5 mm at the intermediate portion, forming an angle of approximately 178 to 160 degrees with a bent portion 52 interposed therebetween. and bent, connected. Outwardly of this intermediate portion are provided end portions 58,60 of 3 mm length extending through the bends 54,56.

FIG. 5 is a drawing showing a planar shape of the air passage 62 of the modified example.
The air passage 62 has three straight portions 64, 66, 68 with lengths of 50 mm to 100 mm and widths of 0.7 mm to 1.5 mm at an intermediate portion, which extend at an angle of approximately 0 degrees through bent portions 70, 72. and are connected in sequence so as to bend (that is, make a U-turn). Outwardly of this intermediate portion are 3 mm long end portions 78,80 extending through the bends 74,76.

Although there is no particular limitation on the shape (shape in plan view) of the air passage, it is preferable that it has at least one bent portion. In addition, the bent portion in the present invention refers to a portion in which the substantially linear portion of the air passage is bent so as to form an internal angle of 178 degrees or less. By providing the bent portion, the entry of oxygen can be suppressed more effectively. again. It is also advantageous in forming a long air passage in the band-shaped seal portion of limited length. However, the configuration without the bent portion may also be used.

FIG. 6 is a drawing showing a planar shape of the air passage 82 in which no bent portion is provided in the intermediate portion.
The air passage 82 is an intermediate portion, and the intermediate portion is not formed with a bent portion.
The air passage 82 has an intermediate portion formed by a straight portion 84 having a length of 50 mm to 100 mm and a width of 0.7 mm to 1.5 mm. There are 3 mm long end portions 90, 92 extending therethrough.

Next, a method for manufacturing the bag 1 of this embodiment will be described. In this manufacturing method, two side edges of a rectangular film are overlapped and joined by an ultrasonic welding method to form a belt-shaped seal portion having an air passage.

First, the configuration of a welding device used for forming a band-shaped seal portion having an air passage in this manufacturing method will be described. FIG. 7 is a drawing schematically showing the configuration of a welding device (ultrasonic bonding machine) 100 used in the ultrasonic welding method of the manufacturing method of the present embodiment.

As shown in FIG. 7, the ultrasonic bonding machine 100 includes an ultrasonic oscillator 102 that converts commercial electricity of 50 Hz or 60 Hz into a high frequency signal of about 15 to 70 kHz, and converts this signal into mechanical vibration. A converter 104, a booster 106 that amplifies this mechanical vibration, a horn 110 that transmits the amplified vibration to a welding target (film) 108, and an anvil 112 that clamps two ends of the film 108 between the horn 110. It is composed of

The anvil 112 is driven by a driving device (not shown). A pressure of about 20N to 1000N is applied between the horn 110 and the anvil 112 by a pressure device (not shown). Pressurization time is approximately 0.1 to 5 seconds.

In the ultrasonic bonding apparatus, grooves corresponding to the shape of the air passage 14 are provided on the surface of either the horn or the anvil. The groove may be provided on either the horn or the anvil, but from the viewpoint of durability and stability of ultrasonic vibration, in the ultrasonic bonding apparatus 100 of this embodiment, the anvil 112 is provided with the groove.

FIG. 8 is a schematic perspective view showing the surface of the anvil 112 used in the ultrasonic bonding apparatus 100. FIG.
A surface 114 of the anvil 112 is formed with a groove 116 for forming a non-joint portion (ventilation path 14, etc.). The dimensions and shape of the groove 116 are determined according to the length, width, etc. of the ventilation path of the bag 1 .

For example, the depth of the groove 116 is set to 0.2 mm or more and 1.0 mm or less, preferably 0.25 mm or more and 0.8 mm or less, and more preferably 0.3 mm or more and 0.5 mm or less. If the depth of the groove is less than 0.2 mm, the strength of the belt-shaped seal portion may be insufficient, and if it exceeds 1.0 mm, the film may be cut at the edge of the groove 116, resulting in poor bonding.

The cross-sectional shape of the groove portion 116 may be any shape such as a rectangular shape, a semicircular shape, or a triangular shape, but a triangular shape is preferable. By making the cross-sectional shape of the groove 116 triangular, it is possible to prevent the film from being cut at the edge of the groove 116 during ultrasonic bonding.

The edges of surface 114 of anvil 112 may be chamfered. By chamfering, it is possible to prevent the film from being cut at this portion during ultrasonic bonding.

Next, a method for manufacturing the bag 1 of this embodiment will be described. In the method for manufacturing the bag 1 of the present embodiment, at the same time when the bag 1 is manufactured, a simple coffee extractor pack in which the simple coffee extractor is enclosed in the bag 1 is manufactured at the same time.

First, the side edges of rectangular or elongated films are overlapped, and this portion is sealed by the above-described ultrasonic bonding apparatus 100 to form a belt-shaped seal portion having an air passage, and the film is formed into a cylindrical member. do.

Next, a seal portion (corresponding to a bottom seal) crossing the tubular member in the width direction is formed in the tubular member to form an internal space with an open upper end. A simple coffee extractor is accommodated in this internal space. Furthermore, if necessary, the internal space is filled with nitrogen gas or the like, and the upper end of the internal space is sealed with a heat seal 94 or the like to form a simple coffee extractor pack 1' (Fig. 9).

In the simple coffee extractor accommodated in the inner space of the bag, the powdered coffee inside has not undergone aging, which will be described later. That is, the coffee ground into powder is immediately enclosed in the simple coffee extractor pack.

In the conventional manufacturing of simple coffee extractor packs, during storage of the simple coffee extractor pack, in order to prevent the packaging material from expanding due to the carbon dioxide generated by the powdered coffee inside, after grinding the coffee beans, This is left in the air or nitrogen gas for a certain period of time, undergoes an aging process in which carbon dioxide is released, and is enclosed in a package.

This aging not only takes time, but also has the problem of degrading the flavor of coffee.
However, in the bag body 1 of the present embodiment, the carbon dioxide generated inside is discharged through the air passage. never occur.

The present invention is not limited to the above-described embodiments, and various changes and modifications are possible within the scope of the technical idea described in the claims.

The bent portion of the present invention includes a bent portion whose apex is sharply bent and a bent portion whose top is bent in an arc shape.

Although the bag 1 of the above-described embodiment has one ventilation path, the bag may have a plurality of ventilation paths. By providing a plurality of ventilation paths, it becomes easier to discharge carbon dioxide generated in the bag.

Although the bag 1 of the above embodiment is formed by folding one sheet of film, it may be formed by stacking two sheets of film, aligning both sides and sealing the upper and lower ends (FIG. 10). In this case, the sealing portion 96 opposite to the band-shaped sealing portion 10 is preferably sealed by heat sealing.

Next, examples of the present invention will be described.

(Example 1)
A barrier film (PET film/aluminum-deposited barrier (VMPET) film/unstretched polypropylene laminated film) was folded in two to form a bag having a length of 110 mm and a width of 100 cm.
The belt-like joints of the present invention were formed in the vertical portion of the bag. A ventilation path 14 shown in FIG. 1 was provided in this portion.

The belt-like joint was formed by ultrasonic welding using the apparatus shown in FIG. As the anvil, one having grooves formed on the surface shown in FIG. 8 was used, and as the horn, one having a smooth surface opposed to the anvil was used. The groove has a triangular cross section and a depth of 0.4 mm. The bonding was performed under the conditions of a load of 800 N and a time of 0.5 seconds. The entire bottom of the bag was heat-sealed and hermetically sealed.

・Width of belt joint: 7 mm (formed at the edge of the film)
・Ventilation path shape: Fig. 3
・Width of ventilation path: 0.5 mm
・Length of ventilation path: 100mm
・Number of ventilation paths: 1

As the coffee, coffee beans (Guatemalan peaberry) were roasted and then used without aging. A drip bag filled with 7 g of this coffee was prepared. This drip bag was housed in the bag body.
Next, the inside of the bag was filled with nitrogen gas using a nitrogen cylinder. Thereafter, the upper end opening was quickly heat-sealed to a width of 6 mm.
A drip coffee pack (simple coffee extractor pack) was prepared as described above.

(Comparative example 1)
Comparative Example 1 was carried out in the same manner as in Example 1, except that the side seal portions were all-surface bonded and sealed.

(Examples 2 to 17, Comparative Examples 2 to 7)
Examples 2 to 17 and Comparative Examples 2-7 were carried out.
However, Comparative Example 2 was not evaluated because a uniform air passage could not be formed.

The drip coffee packs produced were stored at a temperature of 20° C. and evaluated as follows.

<Inflation condition of the bag>
On the 7th day after preparation, the swelling condition of the drip coffee was visually observed.
A Drip coffee is completely swelled B Drip coffee is very slightly swelled C Drip coffee is clearly swelled D Drip coffee is remarkably swelled

<Oxygen concentration in bag>
On the 30th day after making the drip coffee, the oxygen concentration in the bag was measured.
Oxygen concentration A Oxygen concentration less than 2% by volume B Oxygen concentration 2% by volume or more and less than 3% by volume C Oxygen concentration 3% by volume or more and less than 10% by volume D Oxygen concentration 10% by volume or more

B level or higher is practically acceptable for the bulge of the bag. As for the oxygen concentration, a B level or higher is allowed for practical use. The evaluation results are shown in the table of FIG.
As is clear from FIG. 11, comparative examples 1 and 6 show significant swelling, and comparative examples 3, 4, 5 and 7 have oxygen concentrations exceeding the allowable range. Moreover, in Comparative Example 2, a uniform air passage could not be formed. On the other hand, the examples are good in both swelling and oxygen concentration.

1: Bag body 2: Simple coffee extractor (drip coffee)
4: Coffee 6: Filter part 8: Holding part
10: Strip seal
12: Bottom seal part
14: Airway
16: One end (of air passage 14)
18: The other end (of the airway 14)
20, 22, 24, 26, 38, 40: bent part
28, 30, 32, 34, 36: straight part
42, 44: End part

Claims (6)

A simple coffee extractor bag for packaging a simple coffee extractor formed of a film and containing 4 to 20 grams of powdered coffee in a filter,
It has a rectangular planar shape with vertical and horizontal lengths of 80 mm or more and 180 mm or less,
At least one edge of the rectangle is provided with a belt-shaped seal portion having a width of 5 mm or more and 10 mm or less formed by joining opposing films,
The band-shaped seal portion has at least one air passage, one end of which opens to the inside of the bag and the other end of which opens to the outside of the bag, and communicates the inner space of the bag with the outside of the bag. formed,
The ventilation path is composed of a non-bonded portion to which the opposing films are not bonded, and has a length of 50 mm or more and 280 mm or less and a width of 0.5 mm or more and 3 mm or less,
The air passage includes first to third three linear portions arranged in parallel so as to extend in the longitudinal direction of the strip-shaped seal portion,
A first linear portion disposed on the inner space side of the bag has one end communicating with the inner space and the other end adjacent to the first linear portion via a substantially U-shaped bent portion. It is connected to one end of a second linear portion, and the other end of the second linear portion is connected to a third linear portion adjacent to the second linear portion via a substantially U-shaped bent portion. one end of the third linear portion is connected to the other end of the third linear portion and communicates with the outside of the bag body;
A bag body for a simple coffee extractor. The band-shaped seal portion is an ultrasonic joint formed by ultrasonic bonding,
The bag body for a simple coffee extractor according to claim 1. A simple coffee extractor pack comprising a simple coffee extractor including a filter part containing 4 to 20 grams of ground coffee and a bag body for packaging the simple coffee extractor,
The bag body has a rectangular planar shape with vertical and horizontal lengths of 80 mm or more and 180 mm or less,
At least one edge of the rectangle is provided with a belt-shaped seal portion having a width of 5 mm or more and 10 mm or less formed by joining opposing films,
The band-shaped seal portion has at least one air passage, one end of which opens to the inside of the bag and the other end of which opens to the outside of the bag, and communicates the inner space of the bag with the outside of the bag. The air passage is formed by a non-joined portion where the opposing films are not joined, and has a length of 50 mm or more and 280 mm or less and a width of 0.5 mm or more and 3 mm or less.
The air passage includes first to third three linear portions arranged in parallel so as to extend in the longitudinal direction of the strip-shaped seal portion,
A first linear portion disposed on the inner space side of the bag has one end communicating with the inner space and the other end adjacent to the first linear portion via a substantially U-shaped bent portion. It is connected to one end of a second linear portion, and the other end of the second linear portion is connected to a third linear portion adjacent to the second linear portion via a substantially U-shaped bent portion. one end of the third linear portion is connected to the other end of the third linear portion and communicates with the outside of the bag body;
A simple coffee extractor pack characterized by: The band-shaped seal portion is an ultrasonic joint formed by ultrasonic bonding,
A simple coffee extractor pack according to claim 3 . The inside is filled with nitrogen gas,
A simple coffee extractor pack according to claim 3 or 4 . A method for manufacturing a simple coffee extractor pack according to any one of claims 3 to 5 ,
A step of enclosing the simple coffee extractor in the bag,
The encapsulating step is performed without an aging process of aging the powdered coffee after roasting,
A method for manufacturing a simple coffee extractor pack.

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