JP6786852B2 - Pouch - Google Patents

Description

The present invention relates to a pouch used to heat the contents.

Pouches used to heat the contents are known. The pouch may be provided with a scheduled steaming section for discharging water vapor generated from the contents by heating to the outside of the pouch. Patent Document 1 discloses an example of a pouch including a planned steaming portion. The sheet constituting this pouch is provided with a planned steaming portion having a low strength so as to break due to an increase in pressure in the pouch. When this pouch is heated by a heating means such as a microwave oven, the sheet expands due to the steam generated from the contents, the planned steaming part breaks as the sheet expands, and the water vapor in the pouch is discharged from the broken part. Will be done.

Japanese Patent No. 3942709

According to the pouch of Patent Document 1, when the sheet shrinks due to the discharge of water vapor, the contents may leak from the broken portion of the sheet.
An object of the present invention is to provide a pouch in which the contents are less likely to leak.

[1] One form of the pouch according to the present invention includes a bag main body having a storage space capable of accommodating the contents, a second space provided so as to project from the bag main body and connected to the storage space, and the said. It is provided with a protruding portion including a planned steaming portion formed so as to break due to the pressure of steam generated in the accommodation space.

According to the above pouch, the contents are closed in a state of being contained in the accommodation space, and when the contents are heated by a heating means such as a microwave oven, the contents generate water vapor, and the pressure in the accommodation space and the second space is increased. Rise. As a result, the bag body and the protruding portion expand, the planned steaming portion formed in the protruding portion breaks, the storage space and the second space communicate with the outside, water vapor is discharged to the outside, and the storage space. And the rise in pressure in the second space is suppressed, and the inflated bag body and protrusions shrink. Since the planned steaming part is provided in the protruding part that protrudes from the bag body, even if the bag body shrinks, the broken part of the protruding part comes into direct contact with the contents. It's hard to do. Therefore, the contents are less likely to leak.

[2] According to an example of the pouch, the protruding portion is adhered to the bag body with a thermoplastic adhesive.
According to the above pouch, the pouch is less likely to be bulky because the protruding portion is maintained in a state of being adhered to the bag body.

[3] According to an example of the pouch, the shape of the protruding portion is a sheet shape, and the protruding portion is provided with a first surface provided with the scheduled steaming portion and the scheduled steaming portion. The bag body is adhered to the bag body by the thermoplastic adhesive so that the first surface faces the bag body, including the second surface which is not provided.

According to the pouch, since the planned steaming portion is unlikely to come into contact with surrounding objects, for example, it is possible to prevent the planned steaming portion from being damaged and broken during the transport process of the pouch.
[4] According to an example of the pouch, the protruding portion is adhered to the bag body by the thermoplastic adhesive so that a closed space is formed between the first surface and the bag body. The planned steaming portion is provided in a portion of the first surface that forms the space.

According to the pouch, since the planned steaming portion is located in a closed space between the first surface and the bag body where the outside air does not enter and exit, the contents are not easily affected by the outside air.
[5] According to an example of the pouch, the bag main body is accommodated between the first main body sheet and the second main body sheet facing each other, and between the first main body sheet and the second main body sheet. A seal portion for sealing the first main body sheet and the second main body sheet so as to form a space is included, and the seal portion includes a first side portion of the first main body sheet and the second main body. The first side seal portion that seals the first side portion of the sheet, and the second side portion of the first main body sheet and the second side portion of the second main body sheet are sealed. The protruding portion includes the second side sealing portion, and the protruding portion is provided between the first side sealing portion and the second side sealing portion.

According to the pouch, since the protrusion is provided within the width of the first side seal and the second side seal of the bag body, the protrusion is the first side or the second side of the bag body. It is suppressed that the size of the pouch in the width direction becomes larger than that in the case of protruding from the side portion.

[6] According to an example of the pouch, the planned steaming portion includes a notch formed in the protruding portion so as not to penetrate the protruding portion.
According to the above pouch, since the planned steaming portion includes a notch, the scheduled steaming portion is likely to be appropriately broken when the protruding portion expands. Therefore, steam can be appropriately discharged.

[7] According to an example of the pouch, the contents contained in the bag body are further provided.

According to the above pouch, the contents are less likely to leak.

Top view of the pouch of the embodiment. FIG. 2 is a cross-sectional view taken along the line D2-D2 of FIG. A plan view showing a state in which the opening is closed while the contents are contained. FIG. 3 is a cross-sectional view taken along the line D4-D4 of FIG. FIG. 6 is a cross-sectional view showing a state in which the protruding portion of the pouch of FIG. 4 stands up from the bag body. FIG. 5 is a cross-sectional view showing a state in which the planned steaming portion of the pouch of FIG. 5 is broken. FIG. 6 is a cross-sectional view showing a state in which the bag body and the protruding portion of the pouch of FIG. 6 are deflated.

(Embodiment)
FIG. 1 shows the appearance of the pouch 1 in which the contents are not enclosed. The pouch 1 is, for example, a flat pouch, and includes a bag main body 10 having a storage space 10A capable of accommodating the contents, and a protruding portion 20 provided so as to protrude from the bag main body 10. The contents of the pouch 1 are put into the storage space 10A through the opening 19 of the bag body 10, and the contents are sealed by sealing the opening 19. In another example, the pouch 1 is a standing pouch.

The bag body 10 is first so that a storage space 10A is formed between the first body sheet 11 and the second body sheet 12 facing each other, and the first body sheet 11 and the second body sheet 12. A main body sealing portion 13 is provided, which is a portion where the main body sheet 11 and the second main body sheet 12 are sealed.

As shown in FIG. 2, the first main body sheet 11 has a three-layer structure in which an inner layer 11A, an intermediate layer (not shown), and an outer layer 11B are laminated. An example of the material constituting the inner layer 11A is linear low density polyethylene. The intermediate layer is a transparent thin-film deposition layer laminated between the inner layer 11A and the outer layer 11B. An example of the material constituting the intermediate layer is a material having an oxygen barrier property and a water vapor barrier property. Examples of materials having oxygen barrier properties and water vapor barrier properties are aluminum oxide and silicon dioxide. An example of the material constituting the outer layer 11B is nylon. The second main body sheet 12 has the same laminated structure as the first main body sheet 11, and has a three-layer structure in which an inner layer 12A, an intermediate layer (not shown), and an outer layer 12B are laminated.

The main body seal portion 13 is a portion where the inner layer 11A of the first main body sheet 11 and the inner layer 12A of the second main body sheet 12 are sealed, and as shown in FIG. 1, the first side seal portion 13A, A second side seal portion 13B and a bottom seal portion 13C are included.

The first side seal portion 13A is a portion where the first side portion 14A of the first main body sheet 11 and the first side portion 14B of the second main body sheet 12 are sealed. A first notch 18A is formed in a portion of the first side seal portion 13A above the protruding portion 20. The second side seal portion 13B is a portion where the second side portion 15A of the first main body sheet 11 and the second side portion 15B of the second main body sheet 12 are sealed. A second notch 18B is formed in a portion of the second side seal portion 13B above the protruding portion 20. The bottom seal portion 13C is a portion where the bottom portion 16A of the first main body sheet 11 and the bottom portion 16B of the second main body sheet 12 are sealed.

The upper portion of the bag body 10 is a portion in which the upper portion 17A of the first main body sheet 11 and the upper portion 17B of the second main body sheet 12 are not sealed, and an opening 19 for putting the contents in the accommodation space 10A is provided. It is formed.

The projecting portion 20 has a sheet shape folded so that two valley fold lines and a mountain fold line are formed between the two valley fold lines on the first main body sheet 11, and is formed on the first side. It is provided between the outer edge of the portion seal portion 13A and the outer edge of the second side seal portion 13B.

The protrusion 20 includes a second space 20A connected to the accommodation space 10A, and a protrusion sealing portion 30 in which the inner layer 11A of the first main body sheet 11 between the two valley fold lines is sealed to each other. .. The projecting portion 20 further includes a planned steaming portion 40 formed so as to break due to the pressure of steam generated in the accommodation space 10A, a first surface 21 provided with the scheduled steaming portion 40, and a bag body 10. Includes an adhesive portion 60 that is a portion that is adhered by the thermoplastic adhesive 50. In the protruding portion 20, the first main body sheet 11 is folded back in the direction in which the planned steaming portion 40 is closer to the opening 19. The thermoplastic adhesive 50 is a resin that melts when heated by a heating means such as a microwave oven, and is, for example, an ethylene-vinyl acetate copolymer resin or paraffin wax.

The protruding portion seal portion 30 includes a first side seal portion 31 connected to the first side seal portion 13A, a second side seal portion 32 connected to the second side seal portion 13B, and a first main body. The upper seal portion 33 formed in the portion of the sheet 11 including the mountain fold line is included.

The planned steaming portion 40 includes a notch 41 formed so as not to penetrate the protruding portion 20, and the notch 41 penetrates the outer layer 11B and the intermediate layer of the first main body sheet 11 and penetrates the inner layer 11A of the first main body sheet 11. Is not formed in. The planned steaming portion 40 is not formed on the second surface 22 which is the outer surface of the protruding portion 20 opposite to the first surface 21.

The adhesive portion 60 is a portion where the entire edge of the first surface 21 and the bag main body 10 are adhered so that the first surface 21 of the protruding portion 20 faces the bag main body 10. The adhesive portion 60 includes a first main adhesive portion 61, a first sub-adhesive portion 62, a second main adhesive portion 63, a second sub-adhesive portion 64, and a third main adhesive portion 65.

The first main adhesive portion 61 is a portion where the first side seal portion 31 of the protruding portion 20 and the first side seal portion 13A of the bag body 10 are adhered to each other. The first sub-adhesive portion 62 is connected to the first main adhesive portion 61, and is a portion where the first main body sheet 11 of the protruding portion 20 and the first main body sheet 11 of the bag main body 10 are adhered to each other.

The second main adhesive portion 63 is a portion where the second side seal portion 32 of the protruding portion 20 and the second side seal portion 13B of the bag body 10 are adhered to each other. The second sub-adhesive portion 64 is connected to the second main adhesive portion 63, and is a portion where the first main body sheet 11 of the protruding portion 20 and the first main body sheet 11 of the bag main body 10 are adhered to each other.

In the third main adhesive portion 65, the upper seal portion 33 of the protruding portion 20 is adhered to the first side seal portion 13A, the second side seal portion 13B, and the first main body sheet 11 of the bag body 10. This is the part.

Since the adhesive portion 60 is formed on the protruding portion 20, a closed space is formed between the first surface 21 of the protruding portion 20 and the bag body 10, and the position facing the closed space is formed. The planned steaming portion 40 is formed.

The operation will be described together with the usage of the pouch 1.
As shown in FIG. 3, in the pouch 1, the content 100 is sealed by sealing the opening 19 in a state where the content 100 is housed in the storage space 10A. The content 100 is a food product and includes a solid ingredient 110 and a sauce 120.

As shown in FIG. 4, the pouch 1 is arranged in a heating means (not shown) such as a microwave oven so that the first main body sheet 11 is on the upper side of the second main body sheet 12, and is heated by the heating means. As a result, water vapor is generated from the content 100, and the pressure in the accommodation space 10A gradually increases. Therefore, the first main body sheet 11 and the second main body sheet 12 expand in a direction in which they are separated from each other. Further, the thermoplastic adhesive 50 (see FIG. 2) is melted by heating the pouch 1. Therefore, the protruding portion 20 can stand up so as to be separated from the bag main body 10. The arrows in FIGS. 4 to 6 indicate an image of water vapor generated from the content 100.

As shown in FIG. 5, the steam generated from the content 100 flows into the second space 20A of the protrusion 20, the pressure in the second space 20A gradually increases, and the protrusion 20 refers to the bag body 10 with respect to the bag body 10. Stand up.

As shown in FIG. 6, the protruding portion 20 further expands as the pressure in the second space 20A further increases, and corresponds to the notch 41 of the planned steaming portion 40 in the first main body sheet 11. The inner layer 11A of the portion is broken to form a steam passage 70 penetrating the inner layer 11A and the outer layer 11B. Since the steam generated from the content 100 escapes to the outside of the pouch 1 through the passage 70, the increase in pressure in the accommodation space 10A and the second space 20A is suppressed. Therefore, the risk of the pouch 1 exploding is reduced.

As shown in FIG. 7, when the heating by the heating means is completed, steam is not generated from the content 100, so that the bag body 10 and the protruding portion 20 shrink. Since the planned steaming portion 40 is provided in the protruding portion 20 protruding from the bag main body 10, even when the bag main body 10 and the protruding portion 20 are withered, it is a broken portion of the protruding portion 20. The passage 70 is hard to come into contact with the content 100. Therefore, the content 100 is unlikely to leak from the passage 70.

According to the pouch 1, the following effects can be further obtained.
(1) In a pouch composed of a sheet containing a barrier layer having at least one of oxygen barrier property and water vapor barrier property, when a notch penetrating the barrier layer is formed as a planned steaming portion, that portion is a barrier. The sex is reduced. On the other hand, the pouch 1 has an oxygen barrier property and a water vapor barrier property because a steaming planned portion 40 including a notch 41 is formed in a closed space between the first surface 21 of the protruding portion 20 and the bag body 10. Is less likely to occur on the content 100.

(2) Since the protruding portion 20 is adhered to the bag body 10, it is not bulky.
(3) Since the first surface 21 on which the scheduled steaming portion 40 is formed faces the bag body 10, the scheduled steaming portion 40 is unlikely to come into contact with surrounding objects. Therefore, for example, in the process of transporting the pouch 1, it is possible to prevent the planned steaming portion 40 from being damaged and broken.

(4) Since the protruding portion 20 is provided within the width of the first side sealing portion 13A and the second side sealing portion 13B of the bag body 10, the protruding portion 20 is the first side sealing portion. It is suppressed that the size of the pouch 1 in the width direction becomes larger than that in the case where it protrudes from the outer edge of the 13A or the outer edge of the second side seal portion 13B.

(Modification example)
The description of the above embodiments is an example of possible embodiments of a pouch according to the present invention and is not intended to limit those embodiments. The pouch according to the present invention may take, for example, a modification of the above embodiment shown below and a combination of at least two modifications that are consistent with each other.

According to the pouch 1 of the modified example, the first main adhesive portion 61, the first sub adhesive portion 62, the second main adhesive portion 63, the second sub adhesive portion 64, and the third main adhesive portion. Does not have at least one of 65.

-According to the pouch 1 of the modified example, the planned steaming portion 40 is formed on the second surface 22.
-According to the pouch 1 of the modified example, the protruding portion 20 is configured as a portion in which the first main body sheet 11 and the second main body sheet 12 are stuck together.

According to the pouch 1 of the modified example, the first main body sheet 11 and the second main body sheet 12 are one continuous sheet, and the bag main body 10 and the protruding portion are formed by folding back the one sheet. 20 is formed.

1: Pouch 10: Bag body 10A: Storage space 11: First body sheet 12: Second body sheet 13: Body seal part (seal part)
13A: 1st side seal part 13B: 2nd side seal part 14A: 1st side part 14B: 1st side part 15A: 2nd side part 15B: 2nd side part 20: Protruding part 20A: Second space 21: First surface 22: Second surface 40: Scheduled part to be steamed 41: Notch 50: Thermoplastic adhesive 100: Contents

Claims (8)

A bag body with a storage space that can store the contents,
A second space that is provided so as to project from the bag body and is connected to the storage space, and a protrusion including a steaming schedule portion that is formed so as to break due to the pressure of steam generated in the storage space. Prepare ,
The protrusion is adhered to the bag body by a thermoplastic adhesive,
The shape of the protruding portion is a sheet shape.
The protruding portion includes a first surface provided with the scheduled steaming portion and a second surface not provided with the scheduled steaming portion, and the first surface faces the bag body. A pouch that is adhered to the bag body by the thermoplastic adhesive as described above . The thermoplastic adhesive is composed of ethylene vinyl acetate copolymer resin or paraffin wax.
The pouch according to claim 1. The first surface faces the bag body after heating by the heating means is completed.
The pouch according to claim 1 or 2. The protruding portion is adhered to the bag body by the thermoplastic adhesive so that a closed space is formed between the first surface and the bag body.
The pouch according to any one of claims 1 to 3 , wherein the planned steaming portion is provided in a portion of the first surface that forms the space. The planned steaming portion is provided in a portion of the first surface that forms the space, and the portion corresponding to the scheduled steaming portion is not adhered by the adhesive portion made of the thermoplastic adhesive.
The pouch according to claim 4. The bag main body is the first main body sheet and the second main body sheet facing each other, and the first main body sheet so that the accommodation space is formed between the first main body sheet and the second main body sheet. Includes a seal portion that seals the body sheet and the second body sheet.
The seal portion is a first side seal portion that seals the first side portion of the first main body sheet and the first side portion of the second main body sheet, and the first main body sheet. Includes a second side seal that seals the second side and the second side of the second body sheet.
The pouch according to any one of claims 1 to 5 , wherein the protruding portion is provided between the first side seal portion and the second side seal portion. The pouch according to any one of claims 1 to 6 , wherein the planned steaming portion includes a notch formed in the protruding portion so as not to penetrate the protruding portion. The pouch according to any one of claims 1 to 7 , further comprising the contents contained in the bag body.

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