JP2017218160A - Pouch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouch in which a situation in which a large amount of contents leak from an opening formed by peeling a seal is unlikely to occur. SOLUTION: A pouch 1 has a storage space 14 capable of accommodating contents, a first side seal portion 21 along edges 11B and 12B of a pair of sheets 11 and 12, and a recess toward the accommodation space 14 side. The sealing portion 20 including the steaming sealing portion 30 having a rectangular shape, and the unsealed portion 80 which is a part of the pair of sheets 11 and 12 and is an unsealed portion surrounded by the steaming sealing portion 30. Be prepared. The ventilation seal portion 30 has a tip portion 40 configured to be peeled off due to stress concentration when the pressure in the accommodation space 14 rises, and a connection portion 50 connecting the tip portion 40 and the ventilation seal portion 30. And include. The connecting portion 50 includes a peeling restricting portion 61 that regulates peeling of the steaming seal portion 30 that progresses from the tip portion 40 side toward the steaming seal portion 30 side. [Selection diagram] Fig. 1

Description

  The present invention relates to a pouch used for heating contents.

  Pouches that are used to heat the contents are known. The pouch is provided with a structure for discharging water vapor generated from the contents by heating to the outside of the pouch. For example, the side seal portion of the pouch described in Patent Document 1 is provided with a recessed portion formed to be recessed toward the accommodation space side of the pouch. When this pouch is heated by a heating means such as a microwave oven, the seal of the recessed portion is peeled off as the internal pressure of the accommodation space increases, so that an opening is formed in the recessed portion, and water vapor passes through the opening and passes through the pouch. Is discharged outside.

WO2013 / 133092

When the pouch is tilted after the heating of the pouch is completed, a large amount of contents may leak out of the pouch from the opening formed in the recessed portion.
An object of the present invention is to provide a pouch that is unlikely to cause a situation in which a large amount of contents leak from an opening formed by peeling of a seal.

  [1] In one form of the pouch according to the present invention, the pair of sheets are sealed to each other so that a pair of stacked sheets and an accommodation space capable of accommodating contents are formed between the pair of sheets. A portion of the first seal portion along the edge of the pair of sheets, and a seal portion including a second seal portion having a shape recessed toward the accommodation space, and a part of the pair of sheets And an unsealed portion that is an unsealed portion surrounded by the second seal portion, and the second seal portion has an increased pressure in the accommodation space due to water vapor generated from the contents. A tip portion configured to peel when stress concentration occurs, and a connection portion that connects the tip portion and the first seal portion, the connection portion from the tip portion side to the first portion. 1 seal side It comprises a release regulating portion for regulating the release of the second seal portion which travels toward.

  The contents are put into the accommodation space of the pouch and the opening of the pouch is sealed so that the accommodation space is closed, thereby forming a pouch that takes a closed state. When the closed pouch is heated, water vapor is generated from the contents, and the pressure in the accommodation space increases. When the tip of the second seal part peels off as the pressure increases, an opening is formed at the tip. Since the peeling restriction part is provided in the second seal part, the peeling of the seal in the second seal part is restricted by the peeling restriction part. The water vapor staying in the accommodation space passes through a passage formed between the pair of sheets at least at the opening formed at the front end portion and the unsealed portion, and is discharged outside the edges of the pair of sheets. .

  According to the pouch, since water vapor is discharged to the outside of the accommodation space in this way, it is difficult to burst. In addition, the size of the opening formed in the second seal portion by the peeling of the second seal portion is defined by the peeling restricting portion, and an opening larger than the opening having a predetermined size is formed in the second seal portion. It is hard to be done. For this reason, even if the pouch is tilted after the heating of the pouch is finished, a situation in which a large amount of contents leaks from the opening formed in the second seal portion is unlikely to occur. Moreover, when the heating of the pouch is completed, a state in which the surfaces of the sheets constituting the unsealed portion are in close contact with each other with water vapor is easily formed. When the surfaces of the sheets are in close contact, even if the contents pass through the opening formed in the second seal portion, the movement of the contents is hindered by the intimate unsealed portion, It is hard to leak outside the edge of the seat.

[2] According to an example of the pouch, the peeling restricting portion includes a portion having a seal width wider than that of the tip portion.
[3] According to an example of the pouch, a seal width of the peeling restricting portion is increased from the tip end side toward the first seal portion side.

  [4] According to an example of the pouch, the connection portion includes a first connection portion that connects one end portion of the tip portion and a first end portion constituting the first seal portion; and A second connecting portion connecting the other end portion of the tip portion and a second end portion constituting the first seal portion, wherein one of the first connecting portion and the second connecting portion is the The peeling restricting portion is included, and the other of the first connecting portion and the second connecting portion does not include the peeling restricting portion.

[5] According to an example of the pouch, the second seal portion is configured such that the tip portion faces the center of the accommodation space.
[6] According to an example of the pouch, the contents put into the accommodation space are provided.

  According to the pouch, it is difficult to cause a situation in which a large amount of content leaks from the opening formed by the peeling of the seal.

The front view of the pouch of embodiment which takes an open state. The front view of the pouch of embodiment which takes a closed state. FIG. 3 is an enlarged view of the steaming seal portion of FIGS. 1 and 2. The front view which shows the state which the front-end | tip part of the steaming seal part of the pouch of FIG. 2 peeled. The figure which shows the state in which the pouch of FIG. 4 was tilted. The figure which shows the state by which the upper seal part of FIG. 5 is cut off.

(Embodiment)
1 and 2 show an example of the configuration of the pouch 1. The form of the pouch 1 is a standing pouch. The states that can be taken by the pouch 1 include at least an open state and a closed state. In another example, the form of the pouch 1 is a flat pouch. FIG. 1 shows the pouch 1 in an open state, and FIG. 2 shows the pouch 1 in a closed state. The opened state of the pouch 1 is a state in which the content 100 is not put into the pouch 1 and the opening 15 of the pouch 1 is opened. The closed state of the pouch 1 is a state in which the content 100 is put into the pouch 1 and the opening 15 is sealed. The content 100 is a food containing a sauce, for example. In one example, a closed pouch 1 is provided to the end user.

  As shown in FIG. 1, the pouch 1 includes a first sheet 11, a second sheet 12, and a gusset sheet 13. The first sheet 11 and the second sheet 12 are a pair of stacked sheets. The pouch 1 in an open state is provided with a seal portion 20 in which the sheets 11 to 13 are sealed from each other. In addition, the dot shown by FIGS. 1-6 has shown the sealed part in each sheet | seat 11-13.

Each sheet 11-13 has the following layer structures, for example.
Each sheet 11-13 includes an outermost layer, an intermediate layer, and an innermost layer. An example of the material constituting the outermost layer is a transparent material. An example of a transparent material is polyethylene terephthalate. The intermediate layer includes a printing layer, a first adhesive layer, a stretched nylon layer, and a second adhesive layer. The printing layer is provided inside the outermost layer. In one example, a picture and a text for product description are printed on the outer surface of the printing layer. The first adhesive layer is provided inside the printing layer. The stretched nylon layer is provided inside the first adhesive layer. The second adhesive layer is provided inside the stretched nylon layer. An example of the material constituting each adhesive layer is a dry laminate adhesive. The innermost layer is provided inside the second adhesive layer. An example of the material constituting the innermost layer is unstretched polypropylene.

  The seal part 20 includes a first side seal part 21, a second side seal part 22, and a gusset seal part 23. The first side seal portion 21 is an example of a first seal portion, and is a portion where one side portion 11A of the first sheet 11 and one side portion 12A of the second sheet 12 are sealed to each other. is there. The second side seal portion 22 is a portion where the other side portion 11B of the first sheet 11 and the other side portion 12B of the second sheet 12 are sealed with each other. The gusset seal portion 23 is a portion where the sheets 11 to 13 are sealed to each other so that the gusset seal portion 23 of the pouch 1 is configured.

  Since each of the sheets 11 to 13 is sealed by the seal portion 20, an accommodation space 14 that can accommodate the contents 100 is formed between the first sheet 11 and the second sheet 12. An opening 15 that opens the accommodation space 14 is provided on the upper portion of the opened pouch 1. The contents 100 are put into the storage space 14 and the sheets 11 and 12 are sealed so that the opening 15 is closed, whereby the closed pouch 1 shown in FIG. 2 is configured. The seal portion 20 of the closed pouch 1 further includes an upper seal portion 24 that closes the opening 15 in addition to the seal portions 21 to 23.

  A notch 22 </ b> A is provided in the upper part of the second side seal portion 22. A cutting line (not shown) connected to the notch 22 </ b> A is provided on the top of the pouch 1. A part of the pouch 1 including the upper seal portion 24 is cut along the cut line from the notch 22A, whereby the opening 15 is opened, and the pouch 1 in use is configured. The end user can take out the content 100 from the opened opening 15.

  The first side seal portion 21 includes an upper seal portion 21 </ b> A, a lower seal portion 21 </ b> B, and a steaming seal portion 30. The upper seal portion 21 </ b> A and the lower seal portion 21 </ b> B are portions that are sealed along the edges of the sheets 11 and 12. The steaming seal portion 30 is an example of a second seal portion for discharging the water vapor generated from the contents 100 to the outside of the accommodation space 14 when the closed pouch 1 is heated by the heating means. It is a provided part. The steaming seal part 30 is continuous with the upper seal part 21A and the lower seal part 21B, and the side part 11A of the first sheet 11 and the side part 12A of the second sheet 12 together with the seal parts 21A and 21B. It is sealed.

  FIG. 3 is an enlarged view of the steaming seal portion 30. The shape of the vapor-permeable seal portion 30 is a shape that is recessed from the outer edge 11C, 12C side of each sheet 11, 12 toward the accommodation space 14 side. The vapor transmission seal part 30 includes a tip part 40 and a connection part 50. The front end portion 40 is provided at a location where strong stress concentration occurs in each of the sheets 11 and 12 when the pressure in the accommodation space 14 is increased by water vapor generated from the contents 100 in the closed pouch 1. For this reason, when the internal pressure of the closed pouch 1 rises, at least the tip 40 of the steaming seal portion 30 peels off, and the opening 31 (which connects the housing space 14 and the outside of the housing space 14 to the peeled portion) 4) is formed.

  The connection portion 50 includes a first connection portion 60 that connects one end portion 41 of the tip portion 40 and the end portion 25 of the upper seal portion 21A, and the other end portion 42 of the tip portion 40 and the end of the lower seal portion 21B. A second connecting portion 70 that connects the portion 26 is included.

  The first connecting portion 60 includes a peeling regulating portion 61 that regulates peeling of the vapor-permeable sealing portion 30 that proceeds from the distal end portion 40 side toward the upper sealing portion 21A side, and a peeling regulating portion 61 and the upper sealing portion 21A. Side-side end 62 connecting the two. The peeling restricting portion 61 is inclined toward the opening 15 as it goes from the tip 40 side toward the upper seal portion 21A. The side-side end portion 62 connects the end portion of the peeling restricting portion 61 and the upper seal portion 21A, and is inclined from the end portion of the peeling restricting portion 61 toward the upper seal portion 21A.

  The seal width XA of the peeling restricting portion 61 becomes wider from the tip portion 40 side toward the upper seal portion 21A side. Even if the maximum dimension of the seal width XA of the separation regulating portion 61 is the case where the internal pressure of the accommodation space 14 is the highest, the first side seal portion 21 side of the separation regulating portion 61 in the steaming seal portion 30 is located. This is the dimension that does not peel. The second connection portion 70 extends in the width direction of the pouch 1. The seal width XB of the second connection portion 70 is constant. The seal width XA is a dimension of a perpendicular line from the outer edge 61A to the inner edge 61B of the separation regulating part 61, and the seal width XB is a dimension of a perpendicular line from the outer edge 70A of the second connection part 70 to the inner edge 70B.

  The pouch 1 further includes an unsealed portion 80. The unsealed portion 80 is a part of each of the sheets 11 and 12 and is a portion surrounded by the outer edge 20 </ b> A of the first side seal portion 21, and the first unsealed portion 81 and the second unsealed portion 82. including. The surfaces of the sheets 11 and 12 constituting the unsealed portion 80 are not sealed. The first unsealed portion 81 is a portion corresponding to the depression of the vapor-permeable seal portion 30, and is a portion surrounded by the outer edge 30 </ b> A of the vapor-permeable seal portion 30. The second unsealed portion 82 is a portion including the outer edges 11C and 12C of the sheets 11 and 12, and is a portion formed between the end portion of the upper seal portion 21A and the end portion of the lower seal portion 21B.

An example of how the end user uses the pouch 1 will be described.
First, the closed pouch 1 is placed in heating means (not shown) such as a microwave oven and heated by the heating means. After the heating is finished, the pouch 1 is carried by the end user as shown in FIG. Next, as shown in FIG. 6, a portion including the upper seal portion 24 is cut by the end user along the notch 22 </ b> A and a cut line (not shown), and the opening 15 is opened. Next, the content 100 is taken out of the pouch 1 through the opening 15.

According to the pouch 1, the following actions and effects can be obtained.
When the closed pouch 1 is heated by the heating means, water vapor is generated from the contents 100, and the pressure in the accommodation space 14 gradually increases. For this reason, the 1st sheet | seat 11 and the 2nd sheet | seat 12 expand | swell in the direction which mutually spaces apart, and the front-end | tip part 40 of the vapor-permeable seal part 30 peels, and the opening 31 is formed. After the front end portion 40 is peeled off, the peeling of the vapor-permeable seal portion 30 proceeds toward the first side seal portion 21. Since the peeling restricting portion 61 is provided in the first connecting portion 60, for example, the peeling of the seal in the steaming seal portion 30 ends at the widest portion of the seal width XA of the peeling restricting portion 61. When the amount of water vapor generated from the contents 100 is small, the peeling of the seal at the vapor-permeable seal portion 30 ends at a portion closer to the tip portion 40 than the widest portion of the seal width XA.

  The water vapor staying in the accommodation space 14 passes through a passage formed between the pair of sheets 11 and 12 in the opening 31 formed in at least the front end portion 40 and the unsealed portion 80, and the respective sheets 11 and 12. Are discharged outside the outer edges 11C and 12C. For this reason, the pouch 1 is hard to burst.

  The size of the opening 31 formed in the vapor sealing part 30 by peeling of the vapor sealing part 30 is defined by the peeling regulating part 61, and an opening larger than the opening 31 having a predetermined size is formed in the vapor sealing part 30. Hard to form. For this reason, even if the pouch 1 is tilted after the heating of the pouch 1 is finished, a situation in which a large amount of the content 100 leaks from the opening 31 formed in the steaming seal portion 30 is unlikely to occur. Further, when the heating of the pouch 1 is finished, the surfaces of the sheets 11 and 12 constituting the unsealed portion 80 are in close contact with each other by water vapor. For this reason, even if the content 100 passes through the opening 31 formed in the vapor-sealing seal portion 30, the movement of the content 100 is hindered by the unsealed portion 80 that is in close contact, and the content 100 is in each sheet 11, 12 The outer edges 11C and 12C are less likely to leak outside.

  Further, the seal width XA of the peeling restricting portion 61 gradually increases from the distal end portion 40 side toward the upper seal portion 21A side. For this reason, in the process of peeling of the peeling restricting portion 61, stress concentration is unlikely to occur locally in the peeling restricting portion 61, and the peeling proceeds stably until the peeling restricting portion 61 restricts the peeling.

  Moreover, since the side-side end portion 62 is inclined from the end portion of the peeling regulating portion 61 toward the upper seal portion 21 </ b> A side, the fume seal portion 30 of the first sheet 11 and the second sheet 12. In addition, it is possible to secure a wide area for forming a cutting line or the like above.

(Modification)
The above description of the embodiment is an exemplification of a form that can be taken by the pouch according to the present invention, and is not intended to limit the form. The pouch according to the present invention may take, for example, a form in which the modifications of the above-described embodiment shown below and at least two modifications not contradicting each other are combined.

  -The shape of the steaming seal part 30 can be arbitrarily changed. In the first example, the side-side end portion 62 is omitted from the first connection portion 60, and the separation regulating portion 61 is connected to the upper seal portion 21A. The seal width XA of the peeling restricting portion 61 becomes wider from the tip portion 40 side toward the upper seal portion 21A side. In the second example, a seal portion having a shape different from that of the peeling restricting portion 61 is provided between the tip portion 40 and the peeling restricting portion 61. The shape of the seal portion is, for example, a shape in which the seal width is constant or a shape in which the seal width becomes narrower from the distal end portion 40 toward the separation regulating portion 61. In the third example, in addition to the first connection portion 60, the second connection portion 70 is also provided with a peeling restricting portion. The peeling restricting portion of the second connecting portion 70 has a shape according to the shape of the peeling restricting portion 61 of the first connecting portion 60, for example. In the fourth example, only the second connecting portion 70 is provided with a peeling restricting portion.

  -The structure of each sheet | seat 11-13 can be changed arbitrarily. In the first example, the first sheet 11 and the second sheet 12 are configured by bending one sheet. In the second example, each sheet 11 to 13 is configured by bending one sheet.

DESCRIPTION OF SYMBOLS 1: Pouch 11: 1st sheet | seat 12: 2nd sheet | seat 14: Storage space 20: Seal part 21: 1st side seal part (1st seal part)
25: End (first end)
26: end (second end)
30: Steaming seal part (second seal part)
40: tip portion 41: end portion (one end portion)
42: End (the other end)
50: Connection part 60: First connection part 61: Peeling restriction part 70: Second connection part 80: Unsealed part 100: Contents

Claims (6)

A pair of stacked sheets;
A portion that seals the pair of sheets so that an accommodation space capable of accommodating contents is formed between the pair of sheets, a first seal portion along an edge of the pair of sheets; and A seal portion including a second seal portion having a shape recessed toward the accommodation space side;
An unsealed portion that is a part of the pair of sheets and is an unsealed portion surrounded by the second seal portion;
The second seal portion includes a tip portion configured to be peeled off due to stress concentration when the pressure in the storage space is increased by water vapor generated from the contents, the tip portion, and the first portion. Including a connecting portion that connects the sealing portion of
The pouch includes a peeling regulating portion that regulates peeling of the second seal portion that proceeds from the tip end side toward the first seal portion side. The pouch according to claim 1, wherein the peeling restricting portion includes a portion having a seal width wider than that of the tip portion. The pouch according to claim 2, wherein the peeling width of the peeling restricting portion is wider from the tip end side toward the first seal portion side. The connecting portion includes a first connecting portion that connects one end portion of the tip end portion and a first end portion constituting the first seal portion, and the other end portion of the tip end portion and the first end portion. Including a second connection portion connecting the second end portion constituting the seal portion of
One of the first connection part and the second connection part includes the separation regulating part,
The pouch according to any one of claims 1 to 3, wherein the other of the first connection part and the second connection part does not include the peeling restriction part. The pouch according to any one of claims 1 to 4, wherein the second seal portion is configured such that the tip portion faces the center of the accommodation space. The pouch according to any one of claims 1 to 5, comprising the contents put into the accommodation space.

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