JP2020063101A - Pillow pouch and its usage - Google Patents

Abstract

To provide a pillow pouch capable of removing steam and allowing contents to be eaten without being transferred to a plate after cooking.SOLUTION: A pillow pouch 10-1 that is formed of a packaging material having at least a base material layer and a sealant layer in this order, and has a front surface 11, a back surface 12 and a storage space for storing the contents between the front surface and the back surface includes: a first end 10A; a second end 10B opposite to the first end; a third end 10C and a fourth end 10D extending between the first end and the second end; a first end seal portion 14 formed at the first end; a second end seal portion 15 formed at the second end; a palms-fit-shaped seal portion 16 formed from the first end seal portion to the second end seal portion; a gusset folding portion 17 formed at the third end side; and a steam removing mechanism 18 for automatically removing steam in the storage space during heating and cooking.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pillow pouch and a method for manufacturing the pillow pouch.

  Conventionally, pillow pouches that can store contents such as frozen foods have been widely used. Some of such pillow pouches are equipped with a vapor venting mechanism for automatically letting the vapor generated by heating in the microwave oven escape to the outside of the pillow pouch. Although various modes are known as the vapor venting mechanism, for example, there is one that includes a thermosoftening resin layer (see, for example, Patent Document 1).

  When the vapor removal mechanism includes a heat-softening resin layer, the heat-softening resin layer is softened by heating, so the strength reduction of the heat-softening resin layer triggers a part of the heat-softening resin layer and the sealant layer. The pillow pouch can be drained of steam.

Patent No. 4501019

  In a pillow pouch provided with such a steam removal mechanism, the contents are transferred from the pillow pouch to a plate after cooking in a microwave oven to eat the contents. However, at present, it is desired to eat the contents by using the pillow pouch as a container as it is without transferring the contents from the pillow pouch to a plate after cooking the contents in the pillow pouch.

  The present invention has been made to solve the above problems. That is, it is an object of the present invention to provide a pillow pouch that can remove steam and can eat the contents without being transferred to a plate after cooking and a method for producing such pillow pouch.

  According to one aspect of the present invention, it is formed of a packaging material including at least a base material layer and a sealant layer in this order, and contains a front surface, a back surface, and a content between the front surface and the back surface. A pillow pouch having a storage space, the first end, a second end opposite to the first end, and a third end extending between the first end and the second end. And a fourth end, a first end seal formed on the first end, a second end seal formed on the second end, and the first end seal The palm-sealing seal portion formed over the second end seal portion, the first gusset fold portion formed on the third end portion side, and the steam in the accommodation space are automatically removed when the contents are cooked. The pillow pouch is provided with a steam removing mechanism for selectively removing the steam.

  The pillow pouch further comprises an opening start means provided in at least one of the first end seal portion and the second end seal portion, wherein the opening start means extends from an outer edge of the third end portion to the outer edge. The distance to the unsealing start means is within ⅔ of the length of the pillow pouch from the outer edge of the third end to the outer edge of the fourth end, and the fourth end from the first gusset folding portion. It may be provided at a side position.

  The pillow pouch further comprises an opening start means provided in at least one of the first end seal portion and the second end seal portion, wherein the opening start means extends from the first gusset folding portion to the first end portion. They may be provided at positions separated by 10 mm or more and 200 mm or less on the four end side.

  The pillow pouch further comprises a second gusset folding section formed on the fourth end side, and the opening start means is provided at a position closer to the third end side than the second gusset folding section. Good.

  In the pillow pouch, the vapor venting mechanism includes a thermosoftening resin layer partially laminated between the base material layer and the sealant layer, and the thermosoftening resin layer is the first end seal. It may be formed so as to extend from the outer edge to the inner edge of at least one of the portion and the second seal end portion, or to extend from the outer edge to the inner edge of the gas palm seal portion.

  The pillow pouch may further include an opening guide portion provided at a position in contact with or close to the opening start means.

  In the pillow pouch, the opening guide portion may be provided along a direction in which the gas palm seal portion extends.

  According to another aspect of the present invention, a raw material obtained by winding a packaging material including at least a base material layer, a sealant layer, and a thermosoftening resin layer partially laminated between the base material layer and the sealant layer. A step of preparing a roll, unwinding the packaging material from the original roll, heat sealing the ends of the packaging material extending in the flow direction of the packaging material so that the sealant layer is on the inside, Forming the first seal portion to obtain a tubular body, folding a part of the tubular body inward in the width direction of the tubular body to form a folded portion, and after forming the folded portion, Heat-sealing the packaging materials to each other in the width direction of the tubular body to form a second seal portion to obtain a bag body with one side open; filling the bag body with contents; After filling the product, heat-sealing the packaging materials to each other in the width direction of the bag, A step of forming a seal portion and obtaining a sealed bag body, wherein the thermosoftening resin layer of the packaging material wound around the original fabric roll includes a region to be formed of the second seal portion and the first Provided is a method for manufacturing a pillow pouch, which is formed in at least one of the regions where the 3 seal portion is to be formed.

  According to one aspect of the present invention, it is possible to provide a pillow pouch that can remove steam and can eat the contents without transferring to a plate after cooking.

It is a front view of the pillow pouch which concerns on 1st Embodiment. It is sectional drawing which followed the II line | wire of the pillow pouch shown by FIG. It is a top view for demonstrating the dimension of each component of the pillow pouch shown in FIG. It is a front view of another pillow pouch according to the first embodiment. It is a figure which shows the other vapor removal mechanism which concerns on 1st Embodiment. It is sectional drawing of the packaging material used for the pillow pouch which concerns on 1st Embodiment. It is the figure which made the pillow pouch which concerns on 1st Embodiment stand alone, and was opened. It is a front view of the pillow pouch which concerns on 2nd Embodiment. It is a top view for demonstrating the dimension of each component of the pillow pouch shown in FIG. It is a front view of the pillow pouch which concerns on 3rd Embodiment. It is a top view for demonstrating the dimension of each component of the pillow pouch shown in FIG. It is the figure which opened and opened the pillow pouch which concerns on 3rd Embodiment independently.

[First Embodiment]
Hereinafter, the pillow pouch according to the first embodiment of the present invention will be described with reference to the drawings. In the present specification, terms such as “film” and “sheet” are not distinguished from each other based only on the difference in designation. Therefore, for example, “film” is used to include a member also called a sheet. 1 is a front view of a pillow pouch according to the present embodiment, FIG. 2 is a cross-sectional view taken along line I-I of the pillow pouch shown in FIG. 1, and FIG. 3 is a pillow pouch shown in FIG. It is a top view for explaining the size of each component. FIG. 4 is a front view of another pillow pouch according to the present embodiment, FIG. 5 is a view showing another vapor venting mechanism according to the present embodiment, and FIG. 6 is used for the pillow pouch according to the present embodiment. FIG. 7 is a cross-sectional view of the packaging material to be used, and FIG. 7 is a view in which the pillow pouch according to the present embodiment is self-supporting and opened.

<< pillow pouch >>
The pillow pouch 10-1 shown in FIG. 1 has a storage space for storing the contents. The contents are not particularly limited, and examples thereof include foods. Specific contents include frozen foods, prepared foods, snacks and the like. However, the contents are not limited to these.

  Frozen foods include frozen noodles (frozen pasta, frozen yakisoba, frozen udon, frozen ramen, frozen vermicelli, etc.), for example, frozen side dishes (for example, frozen boiled hijiki, frozen chopped radish boiled, frozen meat potatoes, boiled fluffy, Frozen Chikuzen boiled, frozen soaked, frozen sesame sauce etc.), frozen rice (frozen fried rice, frozen pilaf, frozen chicken rice, frozen dry curry, frozen bean paste rice, frozen bean paste roasted rice, frozen porridge etc.) etc. To be

  Examples of the side dish include takoyaki, fried potato, fried chicken, Chinese bun, hamburger, meatballs, minced meat, croquette, chicken nuggets, maimai, gyoza, sausage, pork cutlet, caraage, meatballs, tempura, edamame and the like.

  As snacks, rice crackers such as rice crackers and hail, direct puffed snacks, potato chips, corn chips, nuts, pretzels, popcorn, and other main ingredients, potato starch, flour, corn, sweets made of starchy agricultural products such as rice. Is mentioned. The snacks formed from these raw materials may or may not be fried.

  The pillow pouch 10-1 has a front surface 11, a back surface 12, and a side surface 13, as shown in FIGS. 1 and 2. The front surface 11 and the back surface 12 have rectangular contours. The pillow pouch 10-1 includes a first end portion 10A, a second end portion 10B opposite to the first end portion 10A, and a third end portion extending between the first end portion 10A and the second end portion 10B. It has 10C and the 4th end 10D, and the palm part 10E formed over the 1st end 10A and the 2nd end 10B. The fourth end 10D is an end opposite to the third end 10C. In the pillow pouch 10-1, the first end 10A and the second end 10B extend in the vertical direction DR2, and the third end 10C and the fourth end 10D extend in the horizontal direction DR1.

  The ratio (L1 / W1) of the length L1 (see FIG. 3) of the pillow pouch 10-1 to the width W1 (see FIG. 3) of the pillow pouch 10-1 is preferably 1/4 or more and 3/2 or less. . If L1 / W1 is 1/4 or more, more contents can be stored, and if L1 / W1 is 3/2 or less, pillow pouch after heating in a microwave oven and before opening. When the 10-1 is self-supporting, the pillow pouch 10-1 can be stably self-supporting. The width W1 of the pillow pouch 10-1 is the length of the pillow pouch 10-1 in the lateral direction DR1. Specifically, it is the length from the outer edge 10F of the first end 10A to the outer edge 10G of the second end 10B. When the width W1 of the pillow pouch is not constant, the width of the pillow pouch is set to the shortest value. The length L1 of the pillow pouch 10-1 is the length of the pillow pouch 10-1 in the vertical direction DR2. Specifically, it is the length from the outer edge 10H of the third end 10C to the outer edge 10I of the fourth end 10D. If the pillow pouch length is not constant, the pillow pouch length shall be the shortest. In the present specification, the dimensions of the pillow pouch and the dimensions of each constituent element of the pillow pouch are all values measured in a state in which the pillow pouch is made substantially flat without expanding the gusset folding portion of the pillow pouch. The lower limit of L1 / W1 is more preferably 1/2 or more, and the upper limit of L1 / W1 is more preferably 1 or less.

  The width W1 of the pillow pouch 10-1 may be 70 mm or more and 300 mm or less, and the length L1 of the pillow pouch 10-1 may be 40 mm or more and 450 mm or less.

  As shown in FIG. 1, the pillow pouch 10-1 includes a first end seal portion 14 formed on the first end portion 10A, a second end seal portion 15 formed on the second end portion 10B, and The palm-sealing seal portion 16 is formed so as to extend from the first end seal portion 14 to the second end seal portion 15. The palm-sealing seal portion 16 is provided on the palm-sealing portion 10E as shown in FIG.

  As shown in FIGS. 1 and 2, the third end 10C of the pillow pouch 10-1 has a gusset-folding portion 17 (first gusset-folding portion) folded by a gusset method.

<Gusset insertion part>
The gusset folding portion 17 is formed by folding the side surface 13 in two. By providing the gusset folding part 17 in the third end 10C, the pillow pouch 10-1 can be made to stand by itself after being cooked in a microwave oven. Moreover, since the accommodation space can be enlarged, a larger content can be accommodated. The gusset folding section 17 is formed along the direction in which the palm-sealing seal section 16 extends.

  The ratio (W2 / W1) of the width W2 (see FIG. 3) of the gusset folding portion 17 to the width W1 of the pillow pouch 10-1 is preferably 1/7 or more and 4/7 or less. When W2 / W1 is 1/7 or more, more contents can be accommodated, and the pillow pouch 10-1 can be stably made to stand by itself when the pillow pouch 10-1 is made to stand after opening. If W2 / W1 is 4/7 or less, the contents can be easily taken out. The width W2 of the gusset folding portion 17 is the length of the gusset folding portion 17 in the vertical direction DR2. Specifically, it is the length from the outer edge 10H of the third end 10C to the folding line 17A. If the width of the gusset fold is not constant, the width of the gusset fold should be the shortest. The width W2 of the gusset folding portion 17 may be 10 mm or more and 170 mm or less.

<First and second end seal portions>
The first end seal portion 14 seals between the front surface 11 and the back surface 12, between the front surface 11 and the side surface 13, and between the back surface 12 and the side surface 13 at the first end portion 10A. The second end seal portion 15 is a portion of the front surface 11 and the back surface 12, between the front surface 11 and the side surface 13, and between the back surface 12 and the side surface 13 at the second end portion 10B. This is the part that seals the space. The first end seal portion 14 and the second end seal portion 15 are formed by heat sealing packaging materials 40 described later.

  The first end seal portion 14 and the second end seal portion 15 are formed from the outer edge 10H of the third end portion 10C to the outer edge 10I of the fourth end portion 10D. The outer edge 14A of the first end seal portion 14 is an outer edge 10F, and the outer edge 15A of the second end seal portion 15 is an outer edge 10G.

  The width W3 of the first end seal portion 14 (see FIG. 3) and the width W4 of the second end seal portion 15 (see FIG. 3) are preferably, for example, 5 mm or more and 15 mm or less, respectively. If the width W3 of the first end seal portion 14 and the width W4 of the second end seal portion 15 are each equal to or greater than 5 mm, the first end seal portion 14 and the second end seal portion 15 should be surely sealed. If it is 15 mm or less, it is possible to secure a wider accommodation space. In this specification, the “width” of each seal portion means the length in the direction orthogonal to the extending direction of the seal portion. When the width of the seal portion is not constant, the width of the seal portion is the shortest value in the length in the direction orthogonal to the extending direction of the seal portion.

<Gasho seal section>
The palm-sealing seal portion 16 is a portion that seals between the ends of the packaging material 40 that constitutes the pillow pouch 10-1 extending in the lateral direction DR1 on the front surface 11. The palm-sealing seal portion 16 is formed by heat-sealing the ends of the packaging material 40.

  The palm-sealing seal portion 16 is formed so as to extend from the first end seal portion 14 to the second end seal portion 15. The palm-sealing seal portion 16 is formed from the outer edge 10F of the first end portion 10A to the outer edge 10G of the second end portion 10B as shown in FIG. The width W5 (see FIG. 3) of the palm-sealing portion 16 is preferably, for example, 5 mm or more and 15 mm or less. When the width W5 of the gas palm seal portion 16 is 5 mm or more, the gas palm seal portion 16 can reliably seal, and when the width W5 is 15 mm or less, a wider accommodation space can be secured.

The palm-sealing seal portion 16 is preferably located on the fourth end portion 10D side. That is, the distance from the outer edge 10I of the fourth end 10D to the palm-sealing seal portion 16 is shorter than the distance from the outer edge 10H of the third end 10C to the palm-sealing seal portion 16. Since the palm-sealing seal portion 16 is located on the side of the fourth end portion 10D, when the pillow pouch 10-1 is opened and made to stand by itself, the opening is larger and more stable, so that it is easy to eat.
it can.

  As shown in FIG. 1, the first end seal portion 14 and the second end seal portion 15 are provided with a steam removal mechanism 18 that automatically removes steam in the accommodation space during cooking of the contents. .

<Vapor removal mechanism>
The vapor venting mechanism 18 is composed of thermosoftening resin layers 19 and 20. By providing the thermosoftening resin layers 19 and 20 between the base material layer 41 and the sealant layer 42, which will be described later, the thermosoftening resin layers 19 and 20 are softened during heating and cooking. When the strength of No. 20 is decreased, the thermosoftening resin layers 19 and 20 and a part of the sealant layer 42 are partially destroyed, whereby the steam in the pillow pouch 10-1 can be removed.

  In the pillow pouch 10-1 shown in FIG. 1, the thermosoftening resin layer 19 is partially provided in the first end seal portion 14, and the thermosoftening resin layer 20 is provided in the second end seal portion 15. Although partially provided, the thermosoftening resin layer may be partially provided only on the first end seal or only on the second end seal.

  The thermosoftening resin layer 19 extends from the outer edge 14A to the inner edge 14B of the first end seal portion 14, and the thermosoftening resin layer 20 extends from the outer edge 15A to the inner edge 15B of the second end seal 15. The heat-softenable resin layer 19 extends from the outer edge 14A to the inner edge 14B of the first end seal portion 14, and the heat-softenable resin layer 20 extends from the outer edge 15A to the inner edge 15B of the second end seal portion 15. Since the accommodation space of the pillow pouch 10-1 is connected to the outside in the lateral direction DR1 by the softening of the thermosoftening resin layers 19 and 20 during cooking, the vapor of the accommodation space of the pillow pouch 10-1 can be removed.

  The width W6 of the thermosoftening resin layer 19 (see FIG. 3) is provided to be larger than the width W3 of the first end seal portion 14, and the width W7 of the thermosoftening resin layer 20 (see FIG. 3). (See) is provided so as to be larger than the width W4 of the second end seal portion 15. That is, the thermosoftening resin layer 19 projects from the first end seal portion 14, and the thermosoftening resin layer 20 projects from the second end seal portion 15. Even if the sealing positions of the first end seal portion 14 and the second end seal portion 15 are slightly deviated by setting the widths W6 and W7 of the thermosoftening resin layers 19 and 20 to such widths. The heat-softening resin layers 19 and 20 can be reliably arranged from the outer edges 14A and 15A to the inner edges 14B and 14B of the first end seal portion 14 and the second end seal portion 15. The widths W6 and W7 of the thermosoftening resin layers 19 and 20 are preferably, for example, 6 mm or more and 50 mm or less.

  The strength is weak at the portion where the gas palm seal portion is present in the first end seal portion and the portion where the gas palm seal portion is present in the second end seal portion. Therefore, as shown in FIG. 1, the thermosoftening resin layer 19 is partially provided on the first end seal portion 14, and the thermosoftening resin layer 20 is partially provided on the second end seal portion 15. If provided, the viewpoint of improving the strength of the portion of the first end seal portion 14 where the gas palm seal portion 16 exists and the portion of the second end seal portion 15 where the gas palm seal portion 16 exists, and steam during cooking From the viewpoint of easy removal, it is preferable that the thermosoftening resin layers 19 and 20 are provided so as to include the positions where the gastric seal portion 16 exists in the first end seal portion 14 and the second end seal portion 15. .

  Although the thermosoftening resin layer 19 shown in FIG. 1 is partially provided on the first end seal portion 14, and the thermosoftening resin layer 20 is partially provided on the second end seal portion 15. As in the pillow pouch 10-2 shown in FIG. 4, the thermosoftening resin layer 31 may be partially provided in the gastric seal section 16. When the heat-softenable resin layer is present in the first end seal portion or the second end seal portion, the contents are removed with either the first end seal portion or the second end seal portion facing downward. When the vertical filling is performed, the weight of the contents cannot be withstood and the first end seal portion and the second end seal portion may be opened, but the thermosoftening resin layer 31 is used as the gas seal seal portion. If it is provided in No. 16, since there is no thermosoftening resin layer in the first end seal portion 14 and the second end seal portion 15 even when vertical filling is performed, the first end portion There is no possibility that the seal portion 14 or the second end seal portion 15 will open. The heat-softenable resin layer 31 is provided in the central portion of the gas palm seal portion 16.

  In the pillow pouch 10-2 shown in FIG. 4 as well, for the same reason as above, the thermosoftening resin layer 31 extends from the outer edge 16A to the inner edge 16B of the gas-sealing seal portion 16, and also the thermosoftening resin layer 31. The width W8 (see FIG. 4) is provided so as to be larger than the width W5 (see FIG. 4) of the palm-sealing seal portion 16.

  The vapor venting mechanism 18 shown in FIG. 1 is composed of the thermosoftening resin layers 19 and 20, but it may be composed of a seal portion. In this case, it is not necessary to provide the heat softening resin layer. When the vapor venting mechanism 18 is composed of the palm-sealing seal portion, as shown in FIG. 5 (A), the palm-sealing seal portion 16 having a projecting portion 16C partially protruding toward the base portion 10J of the palm-sealing portion 10E may be used. . In this case, the width of the projecting portion 16C and the width of the portion other than the projecting portion of the palm-sealing seal portion 16 are substantially uniform. Since the projecting portion 16C projects more toward the accommodation space side than the other parts of the gas-sealing seal portion 16, when the pressure inside the pillow pouch 10-1 increases due to heating by the microwave oven, stress is exerted on the projecting portion 16C. It's easier to concentrate. As a result, the seal retreats from the protruding portion 16C, and steam can be discharged. In the present specification, the "base of the gas palm section" means a portion located on the accommodation space side of the gas palm section.

  As shown in FIG. 5B, the notch 16D may be provided on the tip of the palm-sealing portion 10E in the palm-sealing seal portion 16 on the side of the tip 10K. In the palm-sealing seal portion 16 provided with such a cutout 16D, the seal width of the portion provided with the cutout 16D is smaller than that of the other portions, so that the pillow pouch 10-1 is heated by the microwave oven. When the pressure increases, the gas-sealing seal portion 16 is retracted from the base portion 10J side of the gas-sealing portion 10E, and when the notch 16D is reached, steam can be extracted from the notch 16D.

  As shown in FIG. 5C, a through hole 16E may be provided in the gas palm seal portion 16. In the gas-sealing seal portion 16 provided with such a through hole 16E, the seal width of the portion provided with the through hole 16E is smaller than that of the other portions, so that the pillow pouch 10-1 is heated by the microwave oven. When the pressure increases, the gas-sealing seal portion 16 is retracted from the base portion 10J side of the gas-sealing portion 10E, and when the gas reaches the through-hole 16E, steam can be extracted from the through-hole 16E.

  As shown in FIG. 1, the first end seal portion 14 and the second end seal portion 15 are provided with unsealing start means 21 and 22 that can serve as starting points when unsealing. The unsealing start means may be provided on either the first end seal portion or the second end seal portion.

<Means to start opening>
In the opening start means 21 and 22, the distances D1 and D2 from the outer edge 10H of the third end 10C to the opening start means 21 and 22 are within 2/3 of the length L1 of the pillow pouch 10-1, and the gusset folding part. It is provided at a position closer to the fourth end 10D than 17 is. Since the opening starting means 21 and 22 are provided at such positions, the contents are not too deep when eating the contents after opening, and it is easy to eat and does not overlap the gusset folding portion 17, so it is easy. The pillow pouch 10-1 can be opened. Specifically, it is preferable that the unsealing start means 21 and 22 are provided at positions apart from the gusset folding portion 17 on the fourth end portion 10D side by 10 mm or more and 200 mm or less.

  The ratio (D1 / W2, D2 / W2) of the distances D1 and D2 (see FIG. 3) from the outer edge 10H of the third end portion 10C to the opening start means 21 and 22 to the width W2 of the gusset folded portion exceeds 1 and is 20. The following is preferable. When opened at the position of the gusset folding part, it is difficult to open because the packaging material must be opened at the position where 4 sheets of packaging material overlap, but if D1 / W2 or D2 / W2 exceeds 1, 2 sheets of packaging material will overlap. Since it will be opened at the open position, it is easy to open. If D1 / W2 or D2 / W2 exceeds 1, it is possible to prevent the contents from spilling when opening. When D1 / W2 or D2 / W2 is 20 or less, the pillow pouch 10-1 can be stably made self-supporting after opening, and the contents can be easily taken out. The distances D1 and D2 may be, for example, 30 mm or more and 300 mm or less.

  The ratio (D1 / W1, D2 / W1) of the distances D1 and D2 from the third end 10C to the opening start means 21 and 22 to the width W1 of the pillow pouch 10-1 is preferably 1 or more and 20 or less. If D1 / W2 or D2 / W2 is 1 or more, more contents can be accommodated, and if D1 / W2 or D2 / W2 is 20 or less, it means that the food has been cooked in a microwave oven. When the pillow pouch 10-1 is made to stand after opening, the pillow pouch 10-1 can be made to stand stably.

  The unsealing start means 21 and 22 are notches. The opening starting means is not limited to the notch, but may be a notch.

  As shown in FIG. 1, an opening guide portion 23 is provided between the opening start means 21 and the opening start means 22. By providing the opening guide portion 23, the pillow pouch 10-1 can be opened along the opening guide portion 23 when the opening is started from the opening start means 21 or the opening start means 22. The unsealing guide portion 23 shown in FIG. 1 is in contact with the unsealing start means 21 and 22, but may not be in contact with the unsealing start means 21 and 22 and may be located at a position within 2 mm from the tips of the unsealing start means 21 and 22.

<Opening guide>
The unsealing guide portion 23 is a continuous linear half-cut line that penetrates the base material layer 41 described below and does not penetrate the sealant layer 42. The unsealing guide portion may have a discontinuous linear shape instead of a continuous linear shape. The unsealing guide portion 23 can be formed by, for example, a laser or a blade.

  The unsealing guide 23 may be made of a straight cut film. The straight cut film is a film that can be torn linearly in one direction. The straight-cutting film has a tensile strength in the MD direction (flow direction of the film) higher than that in the TD direction (direction orthogonal to the MD direction). When the unsealing guide portion is formed of a straight cut film, the straight cut film is used for at least one of the base material layer and the sealant layer. When a straight-cutting film is used as the base material layer, for example, Emblet (registered trademark) PC or Emblem (registered trademark) NC manufactured by Unitika Ltd. can be used as the base material layer. The tensile strength in the MD direction of Emblet (registered trademark) PC is 200 MPa, and the tensile strength in the TD direction is 180 MPa. When a straight cut film is used for the sealant layer, for example, ZK500R manufactured by Toray Film Co., Ltd. can be used as the sealant layer.

  As shown in FIG. 6, the pillow pouch 10-1 is composed of a packaging material 40 including at least a base material layer 41 and a sealant layer 42 in this order. The packaging material 40 shown in FIG. 6 further includes a printing layer 43, a thermosoftening resin layer 19 and a bonding layer 44 between the base material layer 41 and the sealant layer 42.

<Base material layer>
Since the pillow pouch 10-1 is heated in a microwave oven, the base material layer 41 is preferably made of a material having heat resistance. As the base material layer 41, for example, a stretched polyethylene terephthalate film, a silica vapor deposition stretched polyethylene terephthalate film, an alumina vapor deposition stretched polyethylene terephthalate film, a stretched nylon film, a stretched polypropylene film, or a polypropylene / ethylene-vinyl alcohol copolymer co-stretched co-stretched film. Alternatively, a composite film in which two or more of these films are laminated can be used.

  The base material layer 41 is preferably biaxially stretched. As a result, the molecules forming the base material layer 41 are aligned in the stretching direction by the stretching treatment, and the base material layer 41 exhibits excellent dimensional stability.

  The thickness of the base material layer 41 can be, for example, 10 μm or more and 30 μm or less. If the thickness of the base material layer 41 is 10 μm or more, the heat resistance required for the pouch 10 can be satisfied, and if it is 30 μm or less, the product cost can be suppressed. The thickness of the base material layer 41 is to be obtained as an arithmetic mean value of the measured thicknesses by randomly measuring 10 thicknesses from a cross-sectional photograph of the base material layer taken using an optical microscope. In the pillow pouch, the base material layer 41 is arranged so as to be the outermost side.

<Sealant layer>
The sealant layer 42 is provided to seal the accommodation space of the pillow pouch 10-1 by overlapping the two packaging materials 40 and heat-sealing the ends. Therefore, in the pillow pouch 10-1, the sealant layer 42 is arranged so as to be closest to the accommodation space.

  As the sealant layer 42, a heat resistant film made of a polyolefin resin such as polyethylene, polypropylene, an ethylene-vinyl acetate copolymer, an ethylene-propylene block copolymer, and an easy peel film can be used. The sealant layer 42 may have a single-layer structure or a multi-layer structure. Since the pillow pouch 10-1 is heated in a microwave oven, the sealant layer 42 is preferably a low-density polyethylene layer (LDPE layer) mainly containing low-density polyethylene (LDPE).

  The thickness of the sealant layer 42 is preferably 20 μm or more and 80 μm or less. If the thickness of the sealant layer 42 is 20 μm or more, the pillow pouch 10-1 is excellent in impact resistance against a drop that may occur in the distribution process, and if it is 80 μm or less, it is easy to fill the contents. Excel. The thickness of the sealant layer 42 can be measured by the same method as the thickness of the base material layer 41.

<Print layer>
The printing layer 43 can be composed of a plurality of ink layers. Specifically, for example, the printing layer is formed in the order of a black ink layer / a cyan ink layer / a red ink layer / a yellow ink layer / a white ink layer from the base material layer toward the sealant layer. The print layer 43 can be formed by printing such as gravure printing.

<Thermosoftening resin layer>
The thermosoftening resin layer 19 is a layer that contains a resin and is softened by heating. The heat-softening resin layer 19 is made of a resin material having a melting point of 60 to 110 ° C., for example, an ethylene-vinyl acetate copolymer resin, a resin containing polyamide and nitrification cotton, or a polyamide, nitrification cotton, and polyethylene wax. It can be formed using a resin contained therein. As the resin containing polyamide, nitrified cotton and polyethylene wax, MWOP varnish (softening point: 105 ° C.) manufactured by DIC Graphics Co., Ltd. can be used.

  The thickness of the thermosoftening resin layer 19 is preferably 1 μm or more and 5 μm or less. When the thickness of the heat-softening resin layer 19 is 1 μm or more, the heat-softening resin layer 19 and the sealant layer 42 can be broken when heated in a microwave oven. When the thickness of the heat-softenable resin layer is too thick, depending on the pattern of the heat-softenable resin layer, when the obtained film-shaped packaging material is wound into a roll, a part of the material rises, and the part is wrapped. Although there is a possibility that the material may stretch, if the thickness of the thermosoftening resin layer 19 is 5 μm or less, such stretching of the packaging material 40 can be suppressed. The thickness of the thermosoftening resin layer 19 can be measured by the same method as the thickness of the base material layer 41.

  Although the thermosoftening resin layer 19 has been described above, the thermosoftening resin layers 20 and 31 are the same as the thermosoftening resin layer 19, and therefore the description thereof is omitted here.

<Joining layer>
As the bonding layer 44, for example, an adhesive generally used in a dry lamination method known per se can be used, and examples thereof include a polyvinyl acetate adhesive, a polyacrylic ester adhesive, a cyanoacrylate adhesive, An ethylene copolymer adhesive, a cellulose adhesive, a polyester adhesive, a polyamide adhesive, an amino resin adhesive, an epoxy adhesive, a polyurethane adhesive or the like can be used. The polyurethane adhesive is a cured product of a polyol compound and an isocyanate compound.

<< Production method of pillow pouch >>
Such pillow pouch 10-1 can be manufactured as follows. Below, the example which manufactures several pillow pouches 10-1 continuously is shown.

  First, an original roll around which the packaging material 40 is wound is prepared. In the original roll, the width of the heat-softenable resin layers 19 and 20 is part of the regions where the second seal portion and the third seal portion, which will be described later, of the packaging material 40 will be formed. It is formed so as to be larger than the width of the partial seal portion. In the case of forming a plurality of pillow pouches continuously, when paying attention to any one pillow pouch, the second seal portion is the second end seal portion of the pillow pouch and the first pillow pouch on the downstream side next to the second end seal portion. The end seal portion is connected, and the third seal portion is connected to the third end seal portion of the pillow pouch and the second end seal portion of the adjacent upstream pillow pouch. Further, the packaging material is provided with an opening guide portion at a predetermined position along the flow direction of the packaging material by a laser or a blade.

  Next, the packaging material 40 is unwound from the original fabric roll, heat-bonded with both end portions of the packaging material 40 extending in the flow direction being inside with the sealant layers 42, and along the flow direction of the packaging material 40. The extended first seal portion is formed to obtain the cylindrical body. In the pouch 10-1, the first seal portion is a portion that serves as the palm-sealing seal portion 16. After obtaining the tubular body, a part of the tubular body is folded into a widthwise inner side of the tubular body having a predetermined width, which is a direction orthogonal to the flow direction, to form a folded portion.

  After forming the folding portion, the packaging materials 40 are heat-sealed to each other in the width direction of the tubular body to form the second sealing portion, and a bag body having one opening is obtained. The second seal portion is formed such that the portion of the first seal portion of the second seal portion is included in the formation region of the thermosoftening resin layer 19. The second seal portion is a portion that becomes the second end seal portion 15 in the pouch 10-1.

  Then, the contents are filled through the opening of the bag. Then, the packaging materials 40 are heat-sealed to each other in the width direction of the bag body to form the third seal portion, and the sealed bag body is obtained. The third seal portion is a portion that becomes the first end seal portion 14 in the pouch 10-1. The third seal portion is formed such that the portion of the first seal portion of the third seal portion is included in the formation region of the thermosoftening resin layer 20. Then, a through hole or a notch is formed at the position of the unsealing guide portion 23 in the second seal portion and the third seal portion. The through holes or notches serve as opening start means 21 and 22 after cutting the bag body. Then, the bag body is cut in a direction orthogonal to the flow direction of the packaging material 40 at a position where the through hole or the cut is divided. Thereby, the pillow pouch 10-1 shown in FIG. 1 is obtained.

  According to this embodiment, since the vapor venting mechanism 18 is provided, vapor can be vented from the accommodation space during heating and cooking in a microwave oven. Further, since the gusset folding section 17 is provided, the pillow pouch 10-1 can be made to stand by itself after heating and cooking. Thus, after opening the package, the contents can be eaten in the state shown in FIG. 7 without being transferred to a plate after cooking with heating.

  In the pillow pouch 10-2 shown in FIG. 4, since the gas-sealing seal portion 16 is provided with the heat-softening resin layer 31 which is a steam removing mechanism, steam escapes from the gas-sealing seal portion 16 during cooking in a microwave oven. . For this reason, in the pillow pouch 10-2, it is necessary to arrange the palm seal section 16 on the upper side when the microwave oven is cooked. Therefore, in this case, a pattern is often formed mainly on the front surface 11 where the palm-sealing seal portion 16 visually recognized during heating and cooking is present. On the other hand, in the pillow pouch 10-1 shown in FIG. 1, since the first end seal portion 14 and the second end seal portion 15 are provided with the vapor vent mechanism 18, at the time of cooking in a microwave oven. Steam escapes from the lateral direction DR1 of the pillow pouch 10-1. Therefore, the palm-sealing seal portion 16 of the pillow pouch 10-1 may be arranged on either the upper side or the lower side. Therefore, since the pattern may be formed on both the front surface 11 and the back surface 12, the degree of freedom in selecting the pattern surface can be improved.

[Second Embodiment]
Hereinafter, a pillow pouch according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a front view of the pillow pouch according to the present embodiment, and FIG. 9 is a plan view for explaining dimensions of each constituent element of the pillow pouch shown in FIG. Note that, in FIGS. 8 and 9, the members denoted by the same reference numerals as those in FIG. 1 and the like are the same as the members illustrated in FIG.

  In the pillow pouch 10-3 shown in FIG. 8, not only the gusset folding portion 17 is provided on the third end portion 10C side, but also the gusset folding portion 51 (second gusset folding portion) is provided on the fourth end portion 10D side. There is. By providing the gusset folding parts 17 and 51 on both sides of the pillow pouch 10-3, the accommodation space can be made larger, and thus a larger content can be accommodated.

<Gusset insertion part>
The gusset folding section 51 is formed by folding the side surface on the fourth end 10D side in two. The gusset folding portion 51 is formed along the direction in which the palm-sealing seal portion 16 extends.

  The ratio (W9 / W1) of the width W9 (see FIG. 9) of the gusset folding portion 51 to the width W1 of the pillow pouch 10-3 is preferably 1/7 or more and 4/7 or less. If W9 / W1 is 1/7 or more, more contents can be stored. If W9 / W1 is 4/7 or less, the contents can be easily taken out. The width W9 of the gusset folding portion 51 is the length of the gusset folding portion 51 in the vertical direction DR2. Specifically, it is the length from the outer edge 10I of the fourth end portion 10D to the folding line 51A. If the width of the gusset fold is not constant, the width of the gusset fold should be the shortest. The width W9 of the gusset folding section 51 may be 10 mm or more and 170 mm or less. The ratios of the widths W2 to W7, the length L1, the L1 / W1 and the like are the same as those in the first embodiment, and thus the description thereof will be omitted here.

<Means to start opening>
In the opening start means 21 and 22, the distances D1 and D2 (see FIG. 9) from the outer edge 10H of the third end portion 10C to the opening start means 21 and 22 are within 2/3 of the length L1 of the pillow pouch 10-1. The opening start means 21 and 22 are provided at positions closer to the fourth end 10D side than the gusset folding part 17, but are located closer to the third end 10C side than the gusset folding part 51. There is. Since the opening starting means 21 and 22 are provided at such positions, the contents are not too deep when eating the contents after opening, and the contents do not overlap with the gusset folding parts 17 and 51. The pillow pouch can be easily opened. Specifically, the unsealing start means 21, 22 are located 10 mm or more and 200 mm or less away from the gusset folding section 17 toward the fourth end 10D side and 10 mm or more away from the gusset folding section 51 toward the third end 10C side. It is preferably provided.

  According to the present embodiment, as with the first embodiment, the vapor venting mechanism 18 is provided, so vapor can be vented from the accommodation space during heating and cooking in a microwave oven. Further, since the gusset folding section 17 is provided, the pillow pouch 10-1 can be made to stand by itself after heating and cooking. As a result, after opening the package, the contents can be eaten without being transferred to a plate after cooking.

  Since the pillow pouch 10-3 is provided with the gusset folding parts 17 and 51 on both sides, the pillow pouch 10-3 can accommodate more contents. Since such a pillow pouch 10-3 has a possibility of spilling when opened when containing a larger amount of contents, such a pillow pouch 10-3 has contents such that the volume after cooking is smaller than the volume before cooking (for example, frozen contents). It is particularly suitable for housing fried rice.

[Third Embodiment]
Hereinafter, a pillow pouch according to a third embodiment of the present invention will be described with reference to the drawings. FIG. 10 is a front view of the pillow pouch according to the present embodiment, FIG. 11 is a plan view for explaining the dimensions of each constituent element of the pillow pouch shown in FIG. 10, and FIG. 12 shows a third embodiment. It is the figure which opened and opened the pillow pouch which concerns. In FIGS. 10 to 12, members given the same reference numerals as those in FIG. 1 and the like are the same as those shown in FIG.

  The pillow pouch 10-4 shown in FIG. 10 has a first end 10A, a second end 10B, a third end 10C, and a fourth end 10D, similar to the pillow pouch 10-1. However, in the pillow pouch 10-4, the first end 10A and the second end 10B extend in the lateral direction DR1 and the third end 10C and the fourth end 10D extend in the vertical direction DR2.

  The ratio (L2 / W10) of the length L2 (see FIG. 11) of the pillow pouch 10-4 to the width W10 (see FIG. 11) of the pillow pouch 10-4 is preferably 1/6 or more and 2 or less. If L2 / W10 is 1/6 or more, more contents can be accommodated, and if L2 / W10 is 2 or less, pillow pouch 10-after heating in a microwave oven and before opening. When making 4 independent, pillow pouch 10-4 can be stably made independent. The lower limit of L2 / W10 is more preferably ¼ or more, and the upper limit of L2 / W10 is more preferably 1 or less.

  The width P10 of the pillow pouch 10-4 may be 50 mm or more and 300 mm or less, and the length L2 of the pillow pouch 10-4 may be 50 mm or more and 200 mm or less.

  The pillow pouch 10-4 includes a first end seal part 61, a second end seal part 62, a palm seal part 63, gusset folding parts 64 and 65, and a vapor venting mechanism 66. It should be noted that the pouch 10-4 is not provided with an opening start means.

<First and second end seal portions>
The first end seal portion 61 is formed on the first end portion 10A, and the second end seal portion 62 is formed on the second end portion 10B. The first end seal portion 61 and the second end seal portion 62 are the same as the first end seal portion 14 and the second end seal portion 15 except that they extend in the lateral direction DR1, so here, The description will be omitted. The widths W11 and W12 of the first end seal portions 61 and 62 are similar to the widths W3 and W4 of the first end seal portions 14 and 15.

<Gasho seal section>
The palm-sealing seal portion 63 is formed so as to extend from the first end seal portion 61 to the second end seal portion 62. The palm-sealing seal portion 63 is the same as the palm-sealing seal portion 16 except that it extends in the vertical direction DR2, and thus the description thereof is omitted here. The width W13 of the palm-sealing seal portion 63 is the same as the width W5 of the palm-sealing seal portion 16.

<Gusset insertion part>
The gusset folding section (first gusset folding section) 64 is provided on the third end 10C side, and the gusset folding section (second gusset folding section) 65 is provided on the fourth end 10D side. The gusset folding parts 61 and 62 are located on both sides of the pouch 10-4 in the lateral direction DR1.

  The ratio (W14 / W10, W15 / W10) of the widths W14, W15 (see FIG. 11) of the gusset folding portions 64, 65 to the width W10 of the pillow pouch 10-4 may be 1/20 or more and 3/7 or less. preferable. When W14 / W10 and W15 / W10 are 1/20 or more, more contents can be accommodated and the pouch 10-4 can be stably self-supporting. If W14 / W10 and W15 / W10 are 3/7 or less, the contents can be easily taken out. The width W14 of the gusset folding portion 64 is the length of the gusset folding portion 64 in the lateral direction DR1. Specifically, it is the length from the outer edge 10H of the third end portion 10C to the folding line 64A. The width W15 of the gusset folding portion 65 is the length of the gusset folding portion 65 in the lateral direction DR1. Specifically, it is the length from the outer edge 10I of the fourth end portion 10D to the folding line 65A. If the width of the gusset fold is not constant, the width of the gusset fold should be the shortest. The width W14, W15 of the gusset folding parts 64, 65 may be 10 mm or more and 170 mm or less.

<Vapor removal mechanism>
The vapor venting mechanism 66 is composed of a thermosoftening resin layer 67. The thermosoftening resin layer 67 is partially provided on the first end seal portion 61. In the pillow pouch 10-4 shown in FIG. 10, the thermosoftening resin layer 67 is provided at the position of the folding line 64 </ b> A in the first end seal portion 61, but is not folded in the first end seal portion 61. It may be provided at the position of the line 65A, or may be provided at both the positions of the folding lines 64A and 65A in the first end seal portion 61.

  The thermosoftening resin layer 67 extends from the outer edge 61A to the inner edge 61B of the first end seal portion 61. Since the thermosoftening resin layer 67 extends from the outer edge 61A to the inner edge 61B of the first end seal portion 61, the accommodation space of the pillow pouch 10-4 is longitudinally changed by the softening of the thermosoftening resin layer 67 during heating and cooking. Since it is connected to the outside, the steam in the accommodation space of the pillow pouch 10-4 can be removed.

  The width W16 of the thermosoftening resin layer 67 (see FIG. 11) is set to be larger than the width W11 of the first end seal portion 61 for the same reason as the reason described in the width W6 of the thermosoftening resin layer 19. It is provided in. The width W16 of the thermosoftening resin layer 67 is preferably 6 mm or more and 50 mm or less, for example.

  The portion of the first end seal portion where the fold line of the gusset fold portion exists has low strength. Therefore, when the thermosoftening resin layer 67 is partially provided in the first end seal portion 61 as shown in FIG. 10, there is a fold line of the gusset fold portion in the first end seal portion. From the viewpoint of improving the strength of the portion and facilitating steam removal during heating and cooking, the thermosoftening resin layer 67 is provided so as to include the fold line 64A of the gusset fold portion 64 in the first end seal portion 61. Is preferred.

  The vapor venting mechanism 66 shown in FIG. 10 is composed of the thermosoftening resin layer 67, but the vapor venting mechanism may be composed of a seal portion as described in the first embodiment. In this case, it is not necessary to provide the heat softening resin layer.

  Since the pouch 10-4 is not provided with the opening starting means as described above, when the pouch 10-4 is opened, the pouch 10-4 is picked up at the upper portion of the gas palm seal portion 63 and the back surface 12, and The end seal portion 61 is peeled off. The pouch 10-4 can be opened as shown in FIG.

  According to the present embodiment, since the vapor vent mechanism 66 is provided, vapor can be vented from the accommodation space during heating and cooking in the microwave oven, as in the first embodiment. Further, since the gusset folding parts 64 and 65 are provided, a large amount of contents can be positioned on the second end 10B side, and the pillow pouch 10-4 can be self-supported without providing the gusset folding part on the bottom part. be able to. As a result, after opening the package, the contents can be eaten without being transferred to a plate after cooking.

  Since the pillow pouch 10-4 is provided with the gusset folding parts 64 and 65 on both sides, the pillow pouch 10-1 can accommodate more contents. Such pillow pouches 10-4 may be used in a pillow pouch 10-4 such that the volume of the pillow pouch 10-4 after heating is smaller than the volume before heating (for example, when the frozen pouch 10-4 is frozen). It is particularly suitable for housing fried rice.

  In order to explain the present invention in detail, examples will be given below, but the present invention is not limited to these descriptions.

<Example 1>
In Example 1, the pillow pouch shown in FIG. 1 was produced. Specifically, first, a packaging material having a width of 330 mm wound in a roll shape was prepared.

  The packaging material comprises a base material layer made of a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, a bonding layer made of a polyurethane adhesive having a thickness of 3 μm, and a sealant layer having a thickness of 40 μm made of an unstretched polyethylene film in this order. It was prepared. In addition, in the packaging material, the width of the heat-softenable resin layer is in the second seal portion in a part of a formation planned region for forming a second seal portion and a third seal portion, which will be described later, between the base material layer and the bonding layer. A thermosoftening resin layer made of MWOP varnish manufactured by DIC Graphics Co., Ltd. having a length of 20 mm, a width of 35 mm, and a thickness of 2 μm was provided so as to be larger than the third seal portion. Further, the packaging material has a continuous linear half-cut line, which is an unsealing guide portion that penetrates the base material layer and does not penetrate the sealant layer, at a predetermined position along the flow direction of the packaging material by a laser. Had been formed.

  Next, both ends extending in the flow direction of the packaging material were heat-sealed with the sealant layers inside so as to form a first seal portion extending along the flow direction of the packaging material to obtain a tubular body. . After obtaining the tubular body, one side of the tubular body was folded to a widthwise inner side of the tubular body with a predetermined width to form a folded portion on one side.

  After forming the folding portion, the packaging materials were heat-sealed to each other in the width direction of the cylindrical body to form the second seal portion, and a bag body having one opening was obtained. The second seal portion was formed such that the portion of the first seal portion of the second seal portion was included in the formation region of the thermosoftening resin layer.

  Then, 170 g of fried rice as a content was filled through the opening of the bag. Then, the packaging materials were heat-sealed to each other in the width direction of the bag to form the third seal portion, and the sealed bag was obtained. The third seal portion was formed such that the portion of the first seal portion of the third seal portion was included in the formation region of the thermosoftening resin layer.

  After that, a through hole that becomes a notch after cutting is formed at the position of the half cut line in the first end seal portion and the second end seal portion, and then, at the position where the through hole is divided, the flow direction of the packaging material is The bag was cut in a direction orthogonal to each other. Thus, a pillow pouch having the same structure as the pillow pouch shown in FIG. 1 was produced. The produced pillow pouch had a length L1 in the longitudinal direction of 120 mm and a width W1 in the lateral direction of 180 mm. Further, in the produced pillow pouch, the width W2 of the gusset folding portion was 40 mm, and the widths W3 and W4 of the first end seal portion and the second end seal portion of the pillow pouch were 10 mm, respectively. Further, the width W5 of the seal-sealed seal portion was 10 mm. The distance D1 from the outer edge of the third end to the notch was 70 mm. The dimensions of L1, W1 to W4, D1, etc. were as shown in FIG.

  Then, the obtained pillow pouch was placed in a microwave oven (model number “RE-T3”, manufactured by SHARPE Corporation) in a flat state and heated at 600 W for 3 minutes. The steam automatically escaped. Further, when the pillow pouch was taken out from the microwave oven after heating and placed on a table so that the gusset folding part was on the lower side, the pillow pouch became self-supporting. After that, when the pillow pouch was opened from the notch, it was possible to maintain the self-supporting state, so that the fried rice could be eaten.

<Example 2>
In Example 2, a pillow pouch was obtained in the same manner as in Example 1 except that 60 g of potato chips was filled as the content. Then, the pouch according to Example 2 was placed in a microwave oven (model “RE-T3”, manufactured by SHARPE Co., Ltd.) in a flat state and heated at 600 W for 30 seconds. Steam automatically escaped from. Further, when the pillow pouch was taken out from the microwave oven after heating and placed on a table so that the gusset folding part was on the lower side, the pillow pouch became self-supporting. After that, when the pillow pouch was opened from the notch, it was possible to maintain the self-supporting state, so that the potato chips could be eaten.

<Example 3>
In Example 3, the pillow pouch shown in FIG. 10 was produced. Specifically, first, a packaging material having a width of 360 mm wound in a roll shape was prepared.

  The packaging material comprises a base material layer made of a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, a bonding layer made of a polyurethane adhesive having a thickness of 3 μm, and a sealant layer having a thickness of 40 μm made of an unstretched polyethylene film in this order. It was prepared. In addition, in the packaging material, the width of the thermosoftening resin layer is larger than the width of the third seal portion in a part of a formation planned region forming a third seal portion described later between the base material layer and the bonding layer. A thermosoftening resin layer made of MWOP varnish manufactured by DIC Graphics Co., Ltd. and having a length of 20 mm, a width of 35 mm, and a thickness of 2 μm was provided so as to be.

  Then, both ends of the packaging material in the flow direction are heat-sealed with the sealant layers inside to form a first seal portion extending in the flow direction of the packaging material to obtain a tubular body. It was After obtaining the tubular body, both sides of the tubular body were folded inward with a predetermined width in the width direction of the tubular body, and folding parts were formed on both sides.

  After forming the folding portion, the packaging materials were heat-sealed to each other in the width direction of the cylindrical body to form the second seal portion, and a bag body having one opening was obtained.

  Then, 170 g of fried rice as a content was filled through the opening of the bag. Then, the packaging materials were heat-sealed to each other in the width direction of the bag to form the third seal portion, and the sealed bag was obtained. The third seal part was formed such that the fold line of the gusset fold part in the third seal part was included in the formation region of the thermosoftening resin layer.

  After that, a through hole that becomes a notch after cutting is formed at the position of the half cut line in the first end seal portion and the second end seal portion, and then, at the position where the through hole is divided, the flow direction of the packaging material is The bag was cut in a direction orthogonal to each other. As a result, a pillow pouch having the same structure as the pillow pouch shown in FIG. 10 was produced. The produced pillow pouch had a length L2 in the vertical direction of 150 mm and a width W10 in the horizontal direction of 170 mm. Further, in the produced pillow pouch, the widths W11 and W12 of the first end seal portion and the second end seal portion were each 10 mm, and the width W13 of the gassho seal portion was 10 mm. In addition, the width W14, 15 of the gusset folding portion was 30 mm. The dimensions of L2, W10 to W15, etc. were as shown in FIG.

  Then, the obtained pillow pouch is placed in a microwave oven (model number “RE-T3”, manufactured by SHARPE Corporation) with its second end portion facing downward and in a self-supporting state, and heated at 600 W for 3 minutes. As a result, steam automatically escaped from the steam removal mechanism during heating. Also, when the pillow pouch was taken out from the microwave oven after heating and placed on a table so that the second end portion was on the lower side, the pillow pouch became self-supporting. After that, when the pillow pouch was opened so as to pull off the first end seal portion by pinching the gassho seal portion and the back surface, the self-standing state could be maintained and the fried rice could be eaten.

<Example 4>
In Example 4, a pillow pouch was obtained in the same manner as in Example 3 except that 60 g of potato chips was filled as the content. And the pouch which concerns on Example 4 is arrange | positioned in the microwave oven (model number "RE-T3", SHARPE Co., Ltd. product) in the state which the 2nd edge part became a lower side and was made to stand, and is 600 W and 30 seconds. When heated, steam automatically escaped from the steam removal mechanism during heating. Also, when the pillow pouch was taken out from the microwave oven after heating and placed on a table so that the second end portion was on the lower side, the pillow pouch became self-supporting. After that, when the pillow pouch was opened so that the first palm seal portion and the back surface were picked and the first end seal portion was peeled off, the self-standing state could be maintained, and the potato chips could be eaten.

10-1, 10-2, 10-3, 10-4 ... Pillow pouch 10A ... 1st end part 10B ... 2nd end part 10C ... 3rd end part 10D ... 4th end part 10E ... Palm part 10F-10I ... Outer edge 11 ... Front surface 12 ... Back surface 13 ... Side surface 14, 61 ... First end seal portion 15, 62 ... Second end seal portion 16, 63 ... Gassho seal portion 17, 51, 64, 65 ... Gusset fold Part 18, 66 ... Vapor removal mechanism 19, 20, 31, 67 ... Thermosoftening resin layer 21, 22 ... Unsealing starting means 23 ... Unsealing induction part 40 ... Packaging material 41 ... Base material layer 42 ... Sealant layer

The present invention relates to pillow pouches and methods of use thereof.

  Conventionally, pillow pouches that can store contents such as frozen foods have been widely used. Some of such pillow pouches are equipped with a vapor venting mechanism for automatically letting the vapor generated by heating in the microwave oven escape to the outside of the pillow pouch. Although various modes are known as the vapor venting mechanism, for example, there is one that includes a thermosoftening resin layer (see, for example, Patent Document 1).

  When the vapor removal mechanism includes a heat-softening resin layer, the heat-softening resin layer is softened by heating, so the strength reduction of the heat-softening resin layer triggers a part of the heat-softening resin layer and the sealant layer. The pillow pouch can be drained of steam.

Patent No. 4501019

  In a pillow pouch provided with such a steam removal mechanism, the contents are transferred from the pillow pouch to a plate after cooking in a microwave oven to eat the contents. However, at present, it is desired to eat the contents by using the pillow pouch as a container as it is without transferring the contents from the pillow pouch to a plate after cooking the contents in the pillow pouch.

The present invention has been made to solve the above problems. That is, it is an object of the present invention to provide a pillow pouch that can remove steam and can eat the contents without being transferred to a plate after cooking and a method of using such pillow pouch.

[1] A pillow pouch that is formed of a packaging material that includes at least a base material layer and a sealant layer in this order, and has a storage space for storing contents formed by a seal seal and an end seal with the sealant layers inside. a first end first end seal portion is formed, the opposite to the first end, a second end a second end seal portion is formed, before Symbol first end A palm-sealing portion including a palm-sealing seal portion formed from the seal portion to the second end-portion seal portion, and extending between the first end portion and the second end portion to form a first gusset folding portion. A third end, a fourth end on the opposite side of the third end extending between the first end and the second end , and steam in the storage space during heating of the contents and a venting mechanism to pull automatically, after the contents were heated, the first gusset fold In a state of being self-supporting by the the fourth end in between the rafter part, it is opened from the first end toward said second end, a pillow pouch.

[2] A pillow pouch which is formed of a packaging material having at least a base material layer and a sealant layer in this order, and in which a sealant layer and an end seal form a storage space for storing contents with the sealant layers inside. A first end formed with a first end seal, a second end formed with a second end seal on the opposite side of the first end, and the first end seal Section including a palm-sealing seal portion formed over the second end seal portion, and a first gusset folding portion extending between the first end portion and the second end portion. 3 end portions, a fourth end portion extending between the first end portion and the second end portion on the side opposite to the third end portion, and vapor in the accommodation space during heating of the contents. A steam removing mechanism for automatically removing the contents, and after the contents are heated, Between parts, it is opened from the first end toward said second end, used as a tray in a state of being self-supporting by the first gusset fold part, pillow pouch.

[3] A pillow pouch that is formed of a packaging material that includes at least a base material layer and a sealant layer in this order, and that has a storage space for storing contents by a seal seal and an end seal with the sealant layers inside. A first end formed with a first end seal, a second end formed with a second end seal on the opposite side of the first end, and the first end seal Section including a palm-sealing seal portion formed over the second end seal portion, and a first gusset folding portion extending between the first end portion and the second end portion. 3 end portions, a fourth end portion that is opposite to the third end portion, extends between the first end portion and the second end portion, and has a second gusset fold portion formed therein; A steam venting mechanism that automatically vents steam in the storage space during heating is used to heat the contents. Then, in a state of being self-supported by the first gusset folding section, between the folding line of the second gusset folding section and the palm section, it is opened from the first end toward the second end. Pillow pouch.

[4] A pillow pouch that is formed of a packaging material that includes at least a base material layer and a sealant layer in this order, and has a storage space for storing contents formed by a seal seal and an end seal with the sealant layers inside. A first end formed with a first end seal, a second end formed with a second end seal on the opposite side of the first end, and the first end seal Section including a palm-sealing seal portion formed over the second end seal portion, and a first gusset folding portion extending between the first end portion and the second end portion. 3 end portions, a fourth end portion that is opposite to the third end portion, extends between the first end portion and the second end portion, and has a second gusset fold portion formed therein; A steam venting mechanism that automatically vents steam in the storage space during heating is used to heat the contents. After being opened, between the folding line of the second gusset folding portion and the joint portion, it is opened from the first end portion toward the second end portion, and in a state of being self-supported by the first gusset folding portion. Pillow pouch used as a plate.

[5] The ratio L1 / W1 of the length L1 of the pillow pouch to the width W1 of the pillow pouch is ¼ or more and 1 or less, and the width W2 of the first gusset folded portion is 10 mm or more and 40 mm or less. The pillow pouch according to any one of [1] to [4] above.

[6] Method of using pillow pouch formed of a packaging material including at least a base material layer and a sealant layer in this order, and a storage space for storing contents formed by a seal seal and an end seal with sealant layers inside The pillow pouch includes a first end portion having a first end seal portion and a second end portion having a second end seal portion on a side opposite to the first end portion. A palm-sealing portion including a palm-sealing seal portion formed from the first end-sealing portion to the second end-sealing portion, extending between the first end portion and the second end portion, and A third end having a gusset fold, a fourth end extending between the first end and the second end on the opposite side of the third end, and heating the contents. A steam removal mechanism that automatically removes steam in the storage space is sometimes provided to heat the contents. After that, in the state of being self-supported by the first gusset folding part, between the fourth end part and the palm part, the pillow pouch is opened from the first end part toward the second end part. Method.

[7] Method of using pillow pouch, which is formed of a packaging material including at least a base material layer and a sealant layer in this order, and has an accommodation space for accommodating the contents formed by a seal seal and an end seal with the sealant layers inside. The pillow pouch includes a first end portion having a first end seal portion and a second end portion having a second end seal portion on a side opposite to the first end portion. A palm-sealing portion including a palm-sealing seal portion formed from the first end-sealing portion to the second end-sealing portion, extending between the first end portion and the second end portion, and A third end having a gusset fold, a fourth end extending between the first end and the second end on the opposite side of the third end, and heating the contents. A steam removal mechanism that automatically removes steam in the storage space is sometimes provided to heat the contents. Then, between the said 4th end part and the said palm part, the pillow which is opened from the said 1st end part toward the said 2nd end part, and is used as a plate in the state self-supported by the said 1st gusset folding part. How to use the pouch.

[8] Method of using pillow pouch, which is formed of a packaging material including at least a base material layer and a sealant layer in this order, and has an accommodation space for accommodating contents by a seal seal and an end seal with the sealant layers inside. The pillow pouch includes a first end portion having a first end seal portion and a second end portion having a second end seal portion on a side opposite to the first end portion. A palm-sealing portion including a palm-sealing seal portion formed from the first end-sealing portion to the second end-sealing portion, extending between the first end portion and the second end portion, and A third end having a gusset fold and a fourth gusset fold that extends between the first end and the second end on the opposite side of the third end. Vapor vents that automatically vent vapors in the storage space at the end and when heating the contents A structure, after heating the contents, in a state of being self-supported by the first gusset folding section, between the folding line of the second gusset folding section and the joint section, and from the first end portion. How to use the pillow pouch that opens toward the second end.

[9] Method of using pillow pouch formed of a packaging material including at least a base material layer and a sealant layer in this order, and a storage space for storing contents formed by a seal seal and an end seal with sealant layers inside The pillow pouch includes a first end portion having a first end seal portion and a second end portion having a second end seal portion on a side opposite to the first end portion. A palm-sealing portion including a palm-sealing seal portion formed from the first end-sealing portion to the second end-sealing portion, extending between the first end portion and the second end portion, and A third end formed with a gusset fold and a fourth end formed between the first end and the second end opposite to the third end and having a second gusset fold. Vapor vents that automatically vent vapors in the storage space at the end and when heating the contents And heating the contents and then opening the first gusset from the first end to the second end between the fold line of the second gusset fold and the joint section. How to use pillow pouch, which is used as a plate while being self-supporting by the gusset folding part.

[10] The ratio L1 / W1 of the length L1 of the pillow pouch to the width W1 of the pillow pouch is ¼ or more and 1 or less, and the width W2 of the first gusset folding portion is 10 mm or more and 40 mm or less. The method of using the pillow pouch according to any one of [6] to [9] above.

  According to one aspect of the present invention, it is possible to provide a pillow pouch that can remove steam and can eat the contents without transferring to a plate after cooking.

It is a front view of the pillow pouch which concerns on 1st Embodiment. It is sectional drawing which followed the II line | wire of the pillow pouch shown by FIG. It is a top view for demonstrating the dimension of each component of the pillow pouch shown in FIG. It is a front view of another pillow pouch according to the first embodiment. It is a figure which shows the other vapor removal mechanism which concerns on 1st Embodiment. It is sectional drawing of the packaging material used for the pillow pouch which concerns on 1st Embodiment. It is a front view of the pillow pouch which concerns on 2nd Embodiment. FIG. 8 is a plan view for explaining dimensions of each component of the pillow pouch shown in FIG. 7 . It is a front view of the pillow pouch which concerns on 3rd Embodiment. Is a plan view for explaining a dimension of each component of the pillow pouch shown in FIG. It is the figure which opened and opened the pillow pouch which concerns on 3rd Embodiment independently.

[First Embodiment]
Hereinafter, the pillow pouch according to the first embodiment of the present invention will be described with reference to the drawings. In the present specification, terms such as “film” and “sheet” are not distinguished from each other based only on the difference in designation. Therefore, for example, “film” is used to include a member also called a sheet. 1 is a front view of a pillow pouch according to the present embodiment, FIG. 2 is a cross-sectional view taken along line I-I of the pillow pouch shown in FIG. 1, and FIG. 3 is a pillow pouch shown in FIG. It is a top view for explaining the size of each component. FIG. 4 is a front view of another pillow pouch according to the present embodiment, FIG. 5 is a view showing another vapor venting mechanism according to the present embodiment, and FIG. 6 is used for the pillow pouch according to the present embodiment. It is sectional drawing of the packaging material used.

<< pillow pouch >>
The pillow pouch 10-1 shown in FIG. 1 has a storage space for storing the contents. The contents are not particularly limited, and examples thereof include foods. Specific contents include frozen foods, prepared foods, snacks and the like. However, the contents are not limited to these.

  Frozen foods include frozen noodles (frozen pasta, frozen yakisoba, frozen udon, frozen ramen, frozen vermicelli, etc.), for example, frozen side dishes (for example, frozen boiled hijiki, frozen chopped radish boiled, frozen meat potatoes, boiled fluffy, Frozen Chikuzen boiled, frozen soaked, frozen sesame sauce etc.), frozen rice (frozen fried rice, frozen pilaf, frozen chicken rice, frozen dry curry, frozen bean paste rice, frozen bean paste roasted rice, frozen porridge etc.) etc. To be

  Examples of the side dish include takoyaki, fried potato, fried chicken, Chinese bun, hamburger, meatballs, minced meat, croquette, chicken nuggets, maimai, gyoza, sausage, pork cutlet, caraage, meatballs, tempura, edamame and the like.

  As snacks, rice crackers such as rice crackers and hail, direct puffed snacks, potato chips, corn chips, nuts, pretzels, popcorn, and other main ingredients, potato starch, flour, corn, sweets made of starchy agricultural products such as rice. Is mentioned. The snacks formed from these raw materials may or may not be fried.

  The pillow pouch 10-1 has a front surface 11, a back surface 12, and a side surface 13, as shown in FIGS. 1 and 2. The front surface 11 and the back surface 12 have rectangular contours. The pillow pouch 10-1 includes a first end portion 10A, a second end portion 10B opposite to the first end portion 10A, and a third end portion extending between the first end portion 10A and the second end portion 10B. It has 10C and the 4th end 10D, and the palm part 10E formed over the 1st end 10A and the 2nd end 10B. The fourth end 10D is an end opposite to the third end 10C. In the pillow pouch 10-1, the first end 10A and the second end 10B extend in the vertical direction DR2, and the third end 10C and the fourth end 10D extend in the horizontal direction DR1.

  The ratio (L1 / W1) of the length L1 (see FIG. 3) of the pillow pouch 10-1 to the width W1 (see FIG. 3) of the pillow pouch 10-1 is preferably 1/4 or more and 3/2 or less. . If L1 / W1 is 1/4 or more, more contents can be stored, and if L1 / W1 is 3/2 or less, pillow pouch after heating in a microwave oven and before opening. When the 10-1 is self-supporting, the pillow pouch 10-1 can be stably self-supporting. The width W1 of the pillow pouch 10-1 is the length of the pillow pouch 10-1 in the lateral direction DR1. Specifically, it is the length from the outer edge 10F of the first end 10A to the outer edge 10G of the second end 10B. When the width W1 of the pillow pouch is not constant, the width of the pillow pouch is set to the shortest value. The length L1 of the pillow pouch 10-1 is the length of the pillow pouch 10-1 in the vertical direction DR2. Specifically, it is the length from the outer edge 10H of the third end 10C to the outer edge 10I of the fourth end 10D. If the pillow pouch length is not constant, the pillow pouch length shall be the shortest. In the present specification, the dimensions of the pillow pouch and the dimensions of each constituent element of the pillow pouch are all values measured in a state in which the pillow pouch is made substantially flat without expanding the gusset folding portion of the pillow pouch. The lower limit of L1 / W1 is more preferably 1/2 or more, and the upper limit of L1 / W1 is more preferably 1 or less.

  The width W1 of the pillow pouch 10-1 may be 70 mm or more and 300 mm or less, and the length L1 of the pillow pouch 10-1 may be 40 mm or more and 450 mm or less.

  As shown in FIG. 1, the pillow pouch 10-1 includes a first end seal portion 14 formed on the first end portion 10A, a second end seal portion 15 formed on the second end portion 10B, and The palm-sealing seal portion 16 is formed so as to extend from the first end seal portion 14 to the second end seal portion 15. The palm-sealing seal portion 16 is provided on the palm-sealing portion 10E as shown in FIG.

  As shown in FIGS. 1 and 2, the third end 10C of the pillow pouch 10-1 has a gusset-folding portion 17 (first gusset-folding portion) folded by a gusset method.

<Gusset insertion part>
The gusset folding portion 17 is formed by folding the side surface 13 in two. By providing the gusset folding part 17 in the third end 10C, the pillow pouch 10-1 can be made to stand by itself after being cooked in a microwave oven. Moreover, since the accommodation space can be enlarged, a larger content can be accommodated. The gusset folding section 17 is formed along the direction in which the palm-sealing seal section 16 extends.

  The ratio (W2 / W1) of the width W2 (see FIG. 3) of the gusset folding portion 17 to the width W1 of the pillow pouch 10-1 is preferably 1/7 or more and 4/7 or less. When W2 / W1 is 1/7 or more, more contents can be accommodated, and the pillow pouch 10-1 can be stably made to stand by itself when the pillow pouch 10-1 is made to stand after opening. If W2 / W1 is 4/7 or less, the contents can be easily taken out. The width W2 of the gusset folding portion 17 is the length of the gusset folding portion 17 in the vertical direction DR2. Specifically, it is the length from the outer edge 10H of the third end 10C to the folding line 17A. If the width of the gusset fold is not constant, the width of the gusset fold should be the shortest. The width W2 of the gusset folding portion 17 may be 10 mm or more and 170 mm or less.

<First and second end seal portions>
The first end seal portion 14 seals between the front surface 11 and the back surface 12, between the front surface 11 and the side surface 13, and between the back surface 12 and the side surface 13 at the first end portion 10A. The second end seal portion 15 is a portion of the front surface 11 and the back surface 12, between the front surface 11 and the side surface 13, and between the back surface 12 and the side surface 13 at the second end portion 10B. This is the part that seals the space. The first end seal portion 14 and the second end seal portion 15 are formed by heat sealing packaging materials 40 described later.

  The first end seal portion 14 and the second end seal portion 15 are formed from the outer edge 10H of the third end portion 10C to the outer edge 10I of the fourth end portion 10D. The outer edge 14A of the first end seal portion 14 is an outer edge 10F, and the outer edge 15A of the second end seal portion 15 is an outer edge 10G.

  The width W3 of the first end seal portion 14 (see FIG. 3) and the width W4 of the second end seal portion 15 (see FIG. 3) are preferably, for example, 5 mm or more and 15 mm or less, respectively. If the width W3 of the first end seal portion 14 and the width W4 of the second end seal portion 15 are each equal to or greater than 5 mm, the first end seal portion 14 and the second end seal portion 15 should be surely sealed. If it is 15 mm or less, it is possible to secure a wider accommodation space. In this specification, the “width” of each seal portion means the length in the direction orthogonal to the extending direction of the seal portion. When the width of the seal portion is not constant, the width of the seal portion is the shortest value in the length in the direction orthogonal to the extending direction of the seal portion.

<Gasho seal section>
The palm-sealing seal portion 16 is a portion that seals between the ends of the packaging material 40 that constitutes the pillow pouch 10-1 extending in the lateral direction DR1 on the front surface 11. The palm-sealing seal portion 16 is formed by heat-sealing the ends of the packaging material 40.

  The palm-sealing seal portion 16 is formed so as to extend from the first end seal portion 14 to the second end seal portion 15. The palm-sealing seal portion 16 is formed from the outer edge 10F of the first end portion 10A to the outer edge 10G of the second end portion 10B as shown in FIG. The width W5 (see FIG. 3) of the palm-sealing portion 16 is preferably, for example, 5 mm or more and 15 mm or less. When the width W5 of the gas palm seal portion 16 is 5 mm or more, the gas palm seal portion 16 can reliably seal, and when the width W5 is 15 mm or less, a wider accommodation space can be secured.

The palm-sealing seal portion 16 is preferably located on the fourth end portion 10D side. That is, the distance from the outer edge 10I of the fourth end 10D to the palm-sealing seal portion 16 is shorter than the distance from the outer edge 10H of the third end 10C to the palm-sealing seal portion 16. Since the palm-sealing seal portion 16 is located on the side of the fourth end portion 10D, when the pillow pouch 10-1 is opened and made to stand by itself, the opening is larger and more stable, so that it is easy to eat.
it can.

  As shown in FIG. 1, the first end seal portion 14 and the second end seal portion 15 are provided with a steam removal mechanism 18 that automatically removes steam in the accommodation space during cooking of the contents. .

<Vapor removal mechanism>
The vapor venting mechanism 18 is composed of thermosoftening resin layers 19 and 20. By providing the thermosoftening resin layers 19 and 20 between the base material layer 41 and the sealant layer 42, which will be described later, the thermosoftening resin layers 19 and 20 are softened during heating and cooking. When the strength of No. 20 is decreased, the thermosoftening resin layers 19 and 20 and a part of the sealant layer 42 are partially destroyed, whereby the steam in the pillow pouch 10-1 can be removed.

  In the pillow pouch 10-1 shown in FIG. 1, the thermosoftening resin layer 19 is partially provided in the first end seal portion 14, and the thermosoftening resin layer 20 is provided in the second end seal portion 15. Although partially provided, the thermosoftening resin layer may be partially provided only on the first end seal or only on the second end seal.

  The thermosoftening resin layer 19 extends from the outer edge 14A to the inner edge 14B of the first end seal portion 14, and the thermosoftening resin layer 20 extends from the outer edge 15A to the inner edge 15B of the second end seal 15. The heat-softenable resin layer 19 extends from the outer edge 14A to the inner edge 14B of the first end seal portion 14, and the heat-softenable resin layer 20 extends from the outer edge 15A to the inner edge 15B of the second end seal portion 15. Since the accommodation space of the pillow pouch 10-1 is connected to the outside in the lateral direction DR1 by the softening of the thermosoftening resin layers 19 and 20 during cooking, the vapor of the accommodation space of the pillow pouch 10-1 can be removed.

  The width W6 of the thermosoftening resin layer 19 (see FIG. 3) is provided to be larger than the width W3 of the first end seal portion 14, and the width W7 of the thermosoftening resin layer 20 (see FIG. 3). (See) is provided so as to be larger than the width W4 of the second end seal portion 15. That is, the thermosoftening resin layer 19 projects from the first end seal portion 14, and the thermosoftening resin layer 20 projects from the second end seal portion 15. Even if the sealing positions of the first end seal portion 14 and the second end seal portion 15 are slightly deviated by setting the widths W6 and W7 of the thermosoftening resin layers 19 and 20 to such widths. The heat-softening resin layers 19 and 20 can be reliably arranged from the outer edges 14A and 15A to the inner edges 14B and 14B of the first end seal portion 14 and the second end seal portion 15. The widths W6 and W7 of the thermosoftening resin layers 19 and 20 are preferably, for example, 6 mm or more and 50 mm or less.

  The strength is weak at the portion where the gas palm seal portion is present in the first end seal portion and the portion where the gas palm seal portion is present in the second end seal portion. Therefore, as shown in FIG. 1, the thermosoftening resin layer 19 is partially provided on the first end seal portion 14, and the thermosoftening resin layer 20 is partially provided on the second end seal portion 15. If provided, the viewpoint of improving the strength of the portion of the first end seal portion 14 where the gas palm seal portion 16 exists and the portion of the second end seal portion 15 where the gas palm seal portion 16 exists, and steam during cooking From the viewpoint of easy removal, it is preferable that the thermosoftening resin layers 19 and 20 are provided so as to include the positions where the gastric seal portion 16 exists in the first end seal portion 14 and the second end seal portion 15. .

  Although the thermosoftening resin layer 19 shown in FIG. 1 is partially provided on the first end seal portion 14, and the thermosoftening resin layer 20 is partially provided on the second end seal portion 15. As in the pillow pouch 10-2 shown in FIG. 4, the thermosoftening resin layer 31 may be partially provided in the gastric seal section 16. When the heat-softenable resin layer is present in the first end seal portion or the second end seal portion, the contents are removed with either the first end seal portion or the second end seal portion facing downward. When the vertical filling is performed, the weight of the contents cannot be withstood and the first end seal portion and the second end seal portion may be opened, but the thermosoftening resin layer 31 is used as the gas seal seal portion. If it is provided in No. 16, since there is no thermosoftening resin layer in the first end seal portion 14 and the second end seal portion 15 even when vertical filling is performed, the first end portion There is no possibility that the seal portion 14 or the second end seal portion 15 will open. The heat-softenable resin layer 31 is provided in the central portion of the gas palm seal portion 16.

  In the pillow pouch 10-2 shown in FIG. 4 as well, for the same reason as above, the thermosoftening resin layer 31 extends from the outer edge 16A to the inner edge 16B of the gas-sealing seal portion 16, and also the thermosoftening resin layer 31. The width W8 (see FIG. 4) is provided so as to be larger than the width W5 (see FIG. 4) of the palm-sealing seal portion 16.

Venting Organization shown in Figure 4 is constructed from heat-softenable resin layer 31, it is possible to configure the sealing portion. In this case, it is not necessary to provide the heat softening resin layer. When configuring the venting Organization from rafter seal portion may use a rafter seal portion 16 having a protruding portion 16C which partially protrudes base 10J side of the rafter part 10E as shown in FIG. 5 (A) . In this case, the width of the projecting portion 16C and the width of the portion other than the projecting portion of the palm-sealing seal portion 16 are substantially uniform. Since the projecting portion 16C projects more toward the accommodation space side than the other parts of the gas-sealing seal portion 16, when the pressure inside the pillow pouch 10-1 increases due to heating by the microwave oven, stress is exerted on the projecting portion 16C. It's easier to concentrate. As a result, the seal retreats from the protruding portion 16C, and steam can be discharged. In the present specification, the "base of the gas palm section" means a portion located on the accommodation space side of the gas palm section.

  As shown in FIG. 5B, the notch 16D may be provided on the tip of the palm-sealing portion 10E in the palm-sealing seal portion 16 on the side of the tip 10K. In the palm-sealing seal portion 16 provided with such a cutout 16D, the seal width of the portion provided with the cutout 16D is smaller than that of the other portions, so that the pillow pouch 10-1 is heated by the microwave oven. When the pressure increases, the gas-sealing seal portion 16 is retracted from the base portion 10J side of the gas-sealing portion 10E, and when the notch 16D is reached, steam can be extracted from the notch 16D.

  As shown in FIG. 5C, a through hole 16E may be provided in the gas palm seal portion 16. In the gas-sealing seal portion 16 provided with such a through hole 16E, the seal width of the portion provided with the through hole 16E is smaller than that of the other portions, so that the pillow pouch 10-1 is heated by the microwave oven. When the pressure increases, the gas-sealing seal portion 16 is retracted from the base portion 10J side of the gas-sealing portion 10E, and when the gas reaches the through-hole 16E, steam can be extracted from the through-hole 16E.

  As shown in FIG. 1, the first end seal portion 14 and the second end seal portion 15 are provided with unsealing start means 21 and 22 that can serve as starting points when unsealing. The unsealing start means may be provided on either the first end seal portion or the second end seal portion.

<Means to start opening>
In the opening start means 21 and 22, the distances D1 and D2 from the outer edge 10H of the third end 10C to the opening start means 21 and 22 are within 2/3 of the length L1 of the pillow pouch 10-1, and the gusset folding part. It is provided at a position closer to the fourth end 10D than 17 is. Since the opening starting means 21 and 22 are provided at such positions, the contents are not too deep when eating the contents after opening, and it is easy to eat and does not overlap the gusset folding portion 17, so it is easy. The pillow pouch 10-1 can be opened. Specifically, it is preferable that the unsealing start means 21 and 22 are provided at positions apart from the gusset folding portion 17 on the fourth end portion 10D side by 10 mm or more and 200 mm or less.

  The ratio (D1 / W2, D2 / W2) of the distances D1 and D2 (see FIG. 3) from the outer edge 10H of the third end portion 10C to the opening start means 21 and 22 to the width W2 of the gusset folded portion exceeds 1 and is 20. The following is preferable. When opened at the position of the gusset folding part, it is difficult to open because the packaging material must be opened at the position where 4 sheets of packaging material overlap, but if D1 / W2 or D2 / W2 exceeds 1, 2 sheets of packaging material will overlap. Since it will be opened at the open position, it is easy to open. If D1 / W2 or D2 / W2 exceeds 1, it is possible to prevent the contents from spilling when opening. When D1 / W2 or D2 / W2 is 20 or less, the pillow pouch 10-1 can be stably made self-supporting after opening, and the contents can be easily taken out. The distances D1 and D2 may be, for example, 30 mm or more and 300 mm or less.

  The ratio (D1 / W1, D2 / W1) of the distances D1 and D2 from the third end 10C to the opening start means 21 and 22 to the width W1 of the pillow pouch 10-1 is preferably 1 or more and 20 or less. If D1 / W2 or D2 / W2 is 1 or more, more contents can be accommodated, and if D1 / W2 or D2 / W2 is 20 or less, it means that the food has been cooked in a microwave oven. When the pillow pouch 10-1 is made to stand after opening, the pillow pouch 10-1 can be made to stand stably.

  The unsealing start means 21 and 22 are notches. The opening starting means is not limited to the notch, but may be a notch.

  As shown in FIG. 1, an opening guide portion 23 is provided between the opening start means 21 and the opening start means 22. By providing the opening guide portion 23, the pillow pouch 10-1 can be opened along the opening guide portion 23 when the opening is started from the opening start means 21 or the opening start means 22. The unsealing guide portion 23 shown in FIG. 1 is in contact with the unsealing start means 21 and 22, but may not be in contact with the unsealing start means 21 and 22 and may be located at a position within 2 mm from the tips of the unsealing start means 21 and 22.

<Opening guide>
The unsealing guide portion 23 is a continuous linear half-cut line that penetrates the base material layer 41 described below and does not penetrate the sealant layer 42. The unsealing guide portion may have a discontinuous linear shape instead of a continuous linear shape. The unsealing guide portion 23 can be formed by, for example, a laser or a blade.

  The unsealing guide 23 may be made of a straight cut film. The straight cut film is a film that can be torn linearly in one direction. The straight-cutting film has a tensile strength in the MD direction (flow direction of the film) higher than that in the TD direction (direction orthogonal to the MD direction). When the unsealing guide portion is formed of a straight cut film, the straight cut film is used for at least one of the base material layer and the sealant layer. When a straight-cutting film is used as the base material layer, for example, Emblet (registered trademark) PC or Emblem (registered trademark) NC manufactured by Unitika Ltd. can be used as the base material layer. The tensile strength in the MD direction of Emblet (registered trademark) PC is 200 MPa, and the tensile strength in the TD direction is 180 MPa. When a straight cut film is used for the sealant layer, for example, ZK500R manufactured by Toray Film Co., Ltd. can be used as the sealant layer.

  As shown in FIG. 6, the pillow pouch 10-1 is composed of a packaging material 40 including at least a base material layer 41 and a sealant layer 42 in this order. The packaging material 40 shown in FIG. 6 further includes a printing layer 43, a thermosoftening resin layer 19 and a bonding layer 44 between the base material layer 41 and the sealant layer 42.

<Base material layer>
Since the pillow pouch 10-1 is heated in a microwave oven, the base material layer 41 is preferably made of a material having heat resistance. As the base material layer 41, for example, a stretched polyethylene terephthalate film, a silica vapor deposition stretched polyethylene terephthalate film, an alumina vapor deposition stretched polyethylene terephthalate film, a stretched nylon film, a stretched polypropylene film, or a polypropylene / ethylene-vinyl alcohol copolymer co-stretched co-stretched film. Alternatively, a composite film in which two or more of these films are laminated can be used.

  The base material layer 41 is preferably biaxially stretched. As a result, the molecules forming the base material layer 41 are aligned in the stretching direction by the stretching treatment, and the base material layer 41 exhibits excellent dimensional stability.

  The thickness of the base material layer 41 can be, for example, 10 μm or more and 30 μm or less. If the thickness of the base material layer 41 is 10 μm or more, the heat resistance required for the pouch 10 can be satisfied, and if it is 30 μm or less, the product cost can be suppressed. The thickness of the base material layer 41 is to be obtained as an arithmetic mean value of the measured thicknesses by randomly measuring 10 thicknesses from a cross-sectional photograph of the base material layer taken using an optical microscope. In the pillow pouch, the base material layer 41 is arranged so as to be the outermost side.

<Sealant layer>
The sealant layer 42 is provided to seal the accommodation space of the pillow pouch 10-1 by overlapping the two packaging materials 40 and heat-sealing the ends. Therefore, in the pillow pouch 10-1, the sealant layer 42 is arranged so as to be closest to the accommodation space.

  As the sealant layer 42, a heat resistant film made of a polyolefin resin such as polyethylene, polypropylene, an ethylene-vinyl acetate copolymer, an ethylene-propylene block copolymer, and an easy peel film can be used. The sealant layer 42 may have a single-layer structure or a multi-layer structure. Since the pillow pouch 10-1 is heated in a microwave oven, the sealant layer 42 is preferably a low-density polyethylene layer (LDPE layer) mainly containing low-density polyethylene (LDPE).

  The thickness of the sealant layer 42 is preferably 20 μm or more and 80 μm or less. If the thickness of the sealant layer 42 is 20 μm or more, the pillow pouch 10-1 is excellent in impact resistance against a drop that may occur in the distribution process, and if it is 80 μm or less, it is easy to fill the contents. Excel. The thickness of the sealant layer 42 can be measured by the same method as the thickness of the base material layer 41.

<Print layer>
The printing layer 43 can be composed of a plurality of ink layers. Specifically, for example, the printing layer is formed in the order of a black ink layer / a cyan ink layer / a red ink layer / a yellow ink layer / a white ink layer from the base material layer toward the sealant layer. The print layer 43 can be formed by printing such as gravure printing.

<Thermosoftening resin layer>
The thermosoftening resin layer 19 is a layer that contains a resin and is softened by heating. The heat-softening resin layer 19 is made of a resin material having a melting point of 60 to 110 ° C., for example, an ethylene-vinyl acetate copolymer resin, a resin containing polyamide and nitrification cotton, or a polyamide, nitrification cotton, and polyethylene wax. It can be formed using a resin contained therein. As the resin containing polyamide, nitrified cotton and polyethylene wax, MWOP varnish (softening point: 105 ° C.) manufactured by DIC Graphics Co., Ltd. can be used.

  The thickness of the thermosoftening resin layer 19 is preferably 1 μm or more and 5 μm or less. When the thickness of the heat-softening resin layer 19 is 1 μm or more, the heat-softening resin layer 19 and the sealant layer 42 can be broken when heated in a microwave oven. When the thickness of the heat-softenable resin layer is too thick, depending on the pattern of the heat-softenable resin layer, when the obtained film-shaped packaging material is wound into a roll, a part of the material rises, and the part is wrapped. Although there is a possibility that the material may stretch, if the thickness of the thermosoftening resin layer 19 is 5 μm or less, such stretching of the packaging material 40 can be suppressed. The thickness of the thermosoftening resin layer 19 can be measured by the same method as the thickness of the base material layer 41.

  Although the thermosoftening resin layer 19 has been described above, the thermosoftening resin layers 20 and 31 are the same as the thermosoftening resin layer 19, and therefore the description thereof is omitted here.

<Joining layer>
As the bonding layer 44, for example, an adhesive generally used in a dry lamination method known per se can be used, and examples thereof include a polyvinyl acetate adhesive, a polyacrylic ester adhesive, a cyanoacrylate adhesive, An ethylene copolymer adhesive, a cellulose adhesive, a polyester adhesive, a polyamide adhesive, an amino resin adhesive, an epoxy adhesive, a polyurethane adhesive or the like can be used. The polyurethane adhesive is a cured product of a polyol compound and an isocyanate compound.

<< Production method of pillow pouch >>
Such pillow pouch 10-1 can be manufactured as follows. Below, the example which manufactures by carrying out the vertical filling of several pillow pouches 10-1 continuously is shown.

First, an original roll around which the packaging material 40 is wound is prepared. In the original fabric roll, width second sealing portion of the heat-softenable resin layer 19, 20 and the third part of the second seal portion and the forming region of the third seal portion will be described later in the packaging material 40 It is formed so as to be larger than the width of the roll portion. In the case of forming a plurality of pillow pouches continuously, when paying attention to any one pillow pouch, the second seal portion is the second end seal portion of the pillow pouch and the first pillow pouch on the downstream side next to the second end seal portion. The end seal portion is connected, and the third seal portion is connected to the first end seal portion of the pillow pouch and the second end seal portion of the adjacent upstream pillow pouch. Further, the packaging material is provided with an opening guide portion at a predetermined position along the flow direction of the packaging material by a laser or a blade.

Next, the packaging material 40 is unwound from the original fabric roll, heat-bonded with both end portions of the packaging material 40 extending in the flow direction being inside with the sealant layers 42, and along the flow direction of the packaging material 40. The extended first seal portion is formed to obtain the cylindrical body. In the pouch 10-1, the first seal portion is a portion that serves as the gastric seal portion 16. After obtaining the tubular body, a part of the tubular body is folded into a widthwise inner side of the tubular body having a predetermined width, which is a direction orthogonal to the flow direction, to form a folded portion. The folding portion is a portion that becomes the gusset folding portion 17 in the pouch 10-1.

  After forming the folding portion, the packaging materials 40 are heat-sealed to each other in the width direction of the tubular body to form the second sealing portion, and a bag body having one opening is obtained. The second seal portion is formed such that the portion of the first seal portion of the second seal portion is included in the formation region of the thermosoftening resin layer 19. The second seal portion is a portion that becomes the second end seal portion 15 in the pouch 10-1.

After that, the contents are filled from the opening of the bag which is on the upstream side . Then, the packaging materials 40 are heat-sealed to each other in the width direction of the bag body to form the third seal portion, and the sealed bag body is obtained. The third seal portion is a portion that becomes the first end seal portion 14 in the pouch 10-1. The third seal portion is formed such that the portion of the first seal portion of the third seal portion is included in the formation region of the thermosoftening resin layer 20. After that, a through hole or a cut is formed at a corresponding position of the unsealing guide portion 23 in the second seal portion and the third seal portion. The through holes or notches serve as opening start means 21 and 22 after cutting the bag body. Then, the bag body is cut in a direction orthogonal to the flow direction of the packaging material 40 at a position where the through hole or the cut is divided. Thereby, the pillow pouch 10-1 shown in FIG. 1 is obtained.

According to this embodiment, since the vapor venting mechanism 18 is provided, vapor can be vented from the accommodation space during heating and cooking in a microwave oven. Further, since the gusset folding section 17 is provided, the pillow pouch 10-1 can be made to stand by itself after heating and cooking. Thus, it is possible to eat the contents without transferring after opening, the dish after pressurized heat cooking.

  In the pillow pouch 10-2 shown in FIG. 4, since the gas-sealing seal portion 16 is provided with the heat-softening resin layer 31 which is a steam removing mechanism, steam escapes from the gas-sealing seal portion 16 during cooking in a microwave oven. . For this reason, in the pillow pouch 10-2, it is necessary to arrange the palm seal section 16 on the upper side when the microwave oven is cooked. Therefore, in this case, a pattern is often formed mainly on the front surface 11 where the palm-sealing seal portion 16 visually recognized during heating and cooking is present. On the other hand, in the pillow pouch 10-1 shown in FIG. 1, since the first end seal portion 14 and the second end seal portion 15 are provided with the vapor vent mechanism 18, at the time of cooking in a microwave oven. Steam escapes from the lateral direction DR1 of the pillow pouch 10-1. Therefore, the palm-sealing seal portion 16 of the pillow pouch 10-1 may be arranged on either the upper side or the lower side. Therefore, since the pattern may be formed on both the front surface 11 and the back surface 12, the degree of freedom in selecting the pattern surface can be improved.

[Second Embodiment]
Hereinafter, a pillow pouch according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a front view of the pillow pouch according to the present embodiment, and FIG. 8 is a plan view for explaining dimensions of each component of the pillow pouch shown in FIG. 7 . 7 and 8 , the members denoted by the same reference numerals as those in FIG. 1 and the like are the same as the members shown in FIG. 1 and the like, and therefore description thereof will be omitted.

In the pillow pouch 10-3 shown in FIG. 7 , not only the gusset folding portion 17 is provided on the third end portion 10C side, but also the gusset folding portion 51 (second gusset folding portion) is provided on the fourth end portion 10D side. There is. By providing the gusset folding parts 17 and 51 on both sides of the pillow pouch 10-3, the accommodation space can be made larger, and thus a larger content can be accommodated.

<Gusset insertion part>
The gusset folding section 51 is formed by folding the side surface on the fourth end 10D side in two. The gusset folding portion 51 is formed along the direction in which the palm-sealing seal portion 16 extends.

The ratio (W9 / W1) of the width W9 (see FIG. 8 ) of the gusset folding portion 51 to the width W1 of the pillow pouch 10-3 is preferably 1/7 or more and 4/7 or less. If W9 / W1 is 1/7 or more, more contents can be stored. If W9 / W1 is 4/7 or less, the contents can be easily taken out. The width W9 of the gusset folding portion 51 is the length of the gusset folding portion 51 in the vertical direction DR2. Specifically, it is the length from the outer edge 10I of the fourth end portion 10D to the folding line 51A. If the width of the gusset fold is not constant, the width of the gusset fold should be the shortest. The width W9 of the gusset folding section 51 may be 10 mm or more and 170 mm or less. The ratios of the widths W2 to W7, the length L1, the L1 / W1 and the like are the same as those in the first embodiment, and thus the description thereof will be omitted here.

<Means to start opening>
Open trigger means 21, 22 (see FIG. 8) the distance D1, D2 from the outer edge 10H of the third end portion 10C to the open trigger means 21, 22 is within 2/3 of the length L1 of the pillow pouch 10- 3 The opening start means 21 and 22 are provided at positions closer to the fourth end 10D side than the gusset folding part 17, but are located closer to the third end 10C side than the gusset folding part 51. There is. Since the opening starting means 21 and 22 are provided at such positions, the contents are not too deep when eating the contents after opening, and the contents do not overlap with the gusset folding parts 17 and 51. The pillow pouch can be easily opened. Specifically, the unsealing start means 21, 22 are located 10 mm or more and 200 mm or less away from the gusset folding section 17 toward the fourth end 10D side and 10 mm or more away from the gusset folding section 51 toward the third end 10C side. It is preferably provided.

According to the present embodiment, as with the first embodiment, the vapor venting mechanism 18 is provided, so vapor can be vented from the accommodation space during heating and cooking in a microwave oven. Further, is provided with the gusset fold part 17 can be self-supporting pillow pouch 10-3 after cooking. As a result, after opening the package, the contents can be eaten without being transferred to a plate after cooking.

  Since the pillow pouch 10-3 is provided with the gusset folding parts 17 and 51 on both sides, the pillow pouch 10-3 can accommodate more contents. Since such a pillow pouch 10-3 has a possibility of spilling when opened when containing a larger amount of contents, such a pillow pouch 10-3 has contents such that the volume after cooking is smaller than the volume before cooking (for example, frozen contents). It is particularly suitable for housing fried rice.

[Third Embodiment]
Hereinafter, a pillow pouch according to a third embodiment of the present invention will be described with reference to the drawings. Figure 9 is a front view of a pillow pouch according to the present embodiment, FIG. 1 0 is a plan view for explaining a dimension of each component of the pillow pouch shown in Figure 9, Figure 1 1 the third embodiment It is the figure which made the pillow pouch which concerns on a form self-supporting, and opened. 9 to 11 , the members denoted by the same reference numerals as those in FIG. 1 and the like are the same as the members shown in FIG. 1 and the like, and therefore description thereof will be omitted.

The pillow pouch 10-4 shown in FIG. 9 has a first end 10A, a second end 10B, a third end 10C, and a fourth end 10D, similar to the pillow pouch 10-1. However, in the pillow pouch 10-4, the first end 10A and the second end 10B extend in the lateral direction DR1 and the third end 10C and the fourth end 10D extend in the vertical direction DR2.

Width W10 of the pillow pouch 10-4 ratio (L2 / W10) of the length of the pillow pouch 10-4 for (see 0 Figure 1) L2 (see 0 Figure 1) is preferably 2 or less 1/6 or more . If L2 / W10 is 1/6 or more, more contents can be accommodated, and if L2 / W10 is 2 or less, pillow pouch 10-after heating in a microwave oven and before opening. When making 4 independent, pillow pouch 10-4 can be stably made independent. The lower limit of L2 / W10 is more preferably ¼ or more, and the upper limit of L2 / W10 is more preferably 1 or less.

  The width P10 of the pillow pouch 10-4 may be 50 mm or more and 300 mm or less, and the length L2 of the pillow pouch 10-4 may be 50 mm or more and 200 mm or less.

  The pillow pouch 10-4 includes a first end seal part 61, a second end seal part 62, a palm seal part 63, gusset folding parts 64 and 65, and a vapor venting mechanism 66. It should be noted that the pouch 10-4 is not provided with an opening start means.

<First and second end seal portions>
The first end seal portion 61 is formed on the first end portion 10A, and the second end seal portion 62 is formed on the second end portion 10B. The first end seal portion 61 and the second end seal portion 62 are the same as the first end seal portion 14 and the second end seal portion 15 except that they extend in the lateral direction DR1, so here, The description will be omitted. The first end seal portion 61 of the width W11, the width W12 of the second end seal portion 62, the width W3 of the first end seal portion 1 4, similar to the width W4 of the second end seal 15 Is.

<Gasho seal section>
The palm-sealing seal portion 63 is formed so as to extend from the first end seal portion 61 to the second end seal portion 62. The palm-sealing seal portion 63 is the same as the palm-sealing seal portion 16 except that it extends in the vertical direction DR2, and thus the description thereof is omitted here. The width W13 of the palm-sealing seal portion 63 is the same as the width W5 of the palm-sealing seal portion 16.

<Gusset insertion part>
The gusset folding section (first gusset folding section) 64 is provided on the third end 10C side, and the gusset folding section (second gusset folding section) 65 is provided on the fourth end 10D side. The gusset folding parts 6 4 and 6 5 are located on both sides of the pouch 10-4 in the lateral direction DR1.

The width of the gusset fold parts 64 and 65 to the width W10 of the pillow pouch 10-4 W14, W15 (FIG. 1 0 see) ratio (W14 / W10, W15 / W10), it is 1/20 or more 3/7 or less Is preferred. When W14 / W10 and W15 / W10 are 1/20 or more, more contents can be accommodated and the pouch 10-4 can be stably self-supporting. If W14 / W10 and W15 / W10 are 3/7 or less, the contents can be easily taken out. The width W14 of the gusset folding portion 64 is the length of the gusset folding portion 64 in the lateral direction DR1. Specifically, it is the length from the outer edge 10H of the third end portion 10C to the folding line 64A. The width W15 of the gusset folding portion 65 is the length of the gusset folding portion 65 in the lateral direction DR1. Specifically, it is the length from the outer edge 10I of the fourth end portion 10D to the folding line 65A. If the width of the gusset fold is not constant, the width of the gusset fold should be the shortest. The width W14, W15 of the gusset folding parts 64, 65 may be 10 mm or more and 170 mm or less.

<Vapor removal mechanism>
The vapor venting mechanism 66 is composed of a thermosoftening resin layer 67. The thermosoftening resin layer 67 is partially provided on the first end seal portion 61. In the pillow pouch 10-4 shown in FIG. 9 , the thermosoftening resin layer 67 is provided at the position of the folding line 64 </ b> A in the first end seal portion 61, but is not folded in the first end seal portion 61. It may be provided at the position of the line 65A, or may be provided at both the positions of the folding lines 64A and 65A in the first end seal portion 61.

  The thermosoftening resin layer 67 extends from the outer edge 61A to the inner edge 61B of the first end seal portion 61. Since the thermosoftening resin layer 67 extends from the outer edge 61A to the inner edge 61B of the first end seal portion 61, the accommodation space of the pillow pouch 10-4 is longitudinally changed by the softening of the thermosoftening resin layer 67 during heating and cooking. Since it is connected to the outside, the steam in the accommodation space of the pillow pouch 10-4 can be removed.

The width of heat-softenable resin layer 67 W16 (see 0 Figure 1), from the same reasons as discussed in the width W6 of the heat-softenable resin layer 19 is larger than the width W11 of the first end seal portion 61 Is provided. The width W16 of the thermosoftening resin layer 67 is preferably 6 mm or more and 50 mm or less, for example.

The portion of the first end seal portion where the fold line of the gusset fold portion exists has low strength. Therefore, when the thermosoftening resin layer 67 is partially provided on the first end seal portion 61 as shown in FIG. 9 , there is a fold line of the gusset fold portion in the first end seal portion. From the viewpoint of improving the strength of the portion and facilitating steam removal during heating and cooking, the thermosoftening resin layer 67 is provided so as to include the fold line 64A of the gusset fold portion 64 in the first end seal portion 61. Is preferred.

The vapor venting mechanism 66 shown in FIG. 9 is composed of the thermosoftening resin layer 67, but the vapor venting mechanism may be composed of a seal portion as described in FIG. 5 of the first embodiment . . In this case, it is not necessary to provide the heat softening resin layer.

Since the pouch 10-4 is not provided with the opening starting means as described above, when the pouch 10-4 is opened, the pouch 10-4 is picked up at the upper portion of the gas palm seal portion 63 and the back surface 12, and The end seal portion 61 is peeled off. It is possible to open the pouch 10-4 as shown in FIG 1.

  According to the present embodiment, since the vapor vent mechanism 66 is provided, vapor can be vented from the accommodation space during heating and cooking in the microwave oven, as in the first embodiment. Further, since the gusset folding parts 64 and 65 are provided, a large amount of contents can be positioned on the second end 10B side, and the pillow pouch 10-4 can be self-supported without providing the gusset folding part on the bottom part. be able to. As a result, after opening the package, the contents can be eaten without being transferred to a plate after cooking.

  Since the pillow pouch 10-4 is provided with the gusset folding parts 64 and 65 on both sides, the pillow pouch 10-1 can accommodate more contents. Such pillow pouches 10-4 may be used in a pillow pouch 10-4 such that the volume of the pillow pouch 10-4 after heating is smaller than the volume before heating (for example, when the frozen pouch 10-4 is frozen). It is particularly suitable for housing fried rice.

  In order to explain the present invention in detail, examples will be given below, but the present invention is not limited to these descriptions.

<Example 1>
In Example 1, the pillow pouch shown in FIG. 1 was produced. Specifically, first, a packaging material having a width of 330 mm wound in a roll shape was prepared.

  The packaging material comprises a base material layer made of a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, a bonding layer made of a polyurethane adhesive having a thickness of 3 μm, and a sealant layer having a thickness of 40 μm made of an unstretched polyethylene film in this order. It was prepared. In addition, in the packaging material, the width of the heat-softenable resin layer is in the second seal portion in a part of a formation planned region for forming a second seal portion and a third seal portion, which will be described later, between the base material layer and the bonding layer. A thermosoftening resin layer made of MWOP varnish manufactured by DIC Graphics Co., Ltd. having a length of 20 mm, a width of 35 mm, and a thickness of 2 μm was provided so as to be larger than the third seal portion. Further, the packaging material has a continuous linear half-cut line, which is an unsealing guide portion that penetrates the base material layer and does not penetrate the sealant layer, at a predetermined position along the flow direction of the packaging material by a laser. Had been formed.

  Next, both ends extending in the flow direction of the packaging material were heat-sealed with the sealant layers inside so as to form a first seal portion extending along the flow direction of the packaging material to obtain a tubular body. . After obtaining the tubular body, one side of the tubular body was folded to a widthwise inner side of the tubular body with a predetermined width to form a folded portion on one side.

  After forming the folding portion, the packaging materials were heat-sealed to each other in the width direction of the cylindrical body to form the second seal portion, and a bag body having one opening was obtained. The second seal portion was formed such that the portion of the first seal portion of the second seal portion was included in the formation region of the thermosoftening resin layer.

  Then, 170 g of fried rice as a content was filled through the opening of the bag. Then, the packaging materials were heat-sealed to each other in the width direction of the bag to form the third seal portion, and the sealed bag was obtained. The third seal portion was formed such that the portion of the first seal portion of the third seal portion was included in the formation region of the thermosoftening resin layer.

  After that, a through hole that becomes a notch after cutting is formed at the position of the half cut line in the first end seal portion and the second end seal portion, and then, at the position where the through hole is divided, the flow direction of the packaging material is The bag was cut in a direction orthogonal to each other. Thus, a pillow pouch having the same structure as the pillow pouch shown in FIG. 1 was produced. The produced pillow pouch had a length L1 in the longitudinal direction of 120 mm and a width W1 in the lateral direction of 180 mm. Further, in the produced pillow pouch, the width W2 of the gusset folding portion was 40 mm, and the widths W3 and W4 of the first end seal portion and the second end seal portion of the pillow pouch were 10 mm, respectively. Further, the width W5 of the seal-sealed seal portion was 10 mm. The distance D1 from the outer edge of the third end to the notch was 70 mm. The dimensions of L1, W1 to W4, D1, etc. were as shown in FIG.

  Then, the obtained pillow pouch was placed in a microwave oven (model number “RE-T3”, manufactured by SHARPE Corporation) in a flat state and heated at 600 W for 3 minutes. The steam automatically escaped. Further, when the pillow pouch was taken out from the microwave oven after heating and placed on a table so that the gusset folding part was on the lower side, the pillow pouch became self-supporting. After that, when the pillow pouch was opened from the notch, it was possible to maintain the self-supporting state, so that the fried rice could be eaten.

<Example 2>
In Example 2, a pillow pouch was obtained in the same manner as in Example 1 except that 60 g of potato chips was filled as the content. Then, the pouch according to Example 2 was placed in a microwave oven (model “RE-T3”, manufactured by SHARPE Co., Ltd.) in a flat state and heated at 600 W for 30 seconds. Steam automatically escaped from. Further, when the pillow pouch was taken out from the microwave oven after heating and placed on a table so that the gusset folding part was on the lower side, the pillow pouch became self-supporting. After that, when the pillow pouch was opened from the notch, it was possible to maintain the self-supporting state, so that the potato chips could be eaten.

<Example 3>
In Example 3, the pillow pouch shown in FIG. 9 was produced. Specifically, first, a packaging material having a width of 360 mm wound in a roll shape was prepared.

  The packaging material comprises a base material layer made of a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, a bonding layer made of a polyurethane adhesive having a thickness of 3 μm, and a sealant layer having a thickness of 40 μm made of an unstretched polyethylene film in this order. It was prepared. In addition, in the packaging material, the width of the thermosoftening resin layer is larger than the width of the third seal portion in a part of a formation planned region forming a third seal portion described later between the base material layer and the bonding layer. A thermosoftening resin layer made of MWOP varnish manufactured by DIC Graphics Co., Ltd. and having a length of 20 mm, a width of 35 mm, and a thickness of 2 μm was provided so as to be.

  Then, both ends of the packaging material in the flow direction are heat-sealed with the sealant layers inside to form a first seal portion extending in the flow direction of the packaging material to obtain a tubular body. It was After obtaining the tubular body, both sides of the tubular body were folded inward with a predetermined width in the width direction of the tubular body, and folding parts were formed on both sides.

  After forming the folding portion, the packaging materials were heat-sealed to each other in the width direction of the cylindrical body to form the second seal portion, and a bag body having one opening was obtained.

  Then, 170 g of fried rice as a content was filled through the opening of the bag. Then, the packaging materials were heat-sealed to each other in the width direction of the bag to form the third seal portion, and the sealed bag was obtained. The third seal part was formed such that the fold line of the gusset fold part in the third seal part was included in the formation region of the thermosoftening resin layer.

After that, a through hole that becomes a notch after cutting is formed at the position of the half cut line in the first end seal portion and the second end seal portion, and then, at the position where the through hole is divided, the flow direction of the packaging material is The bag was cut in a direction orthogonal to each other. As a result, a pillow pouch having the same structure as the pillow pouch shown in FIG. 9 was produced. The produced pillow pouch had a length L2 in the vertical direction of 150 mm and a width W10 in the horizontal direction of 170 mm. Further, in the produced pillow pouch, the widths W11 and W12 of the first end seal portion and the second end seal portion were each 10 mm, and the width W13 of the gassho seal portion was 10 mm. In addition, the width W14, 15 of the gusset folding portion was 30 mm. Incidentally, L2, the dimensions of such W10~W15 were as indicated by FIG. 1 0.

  Then, the obtained pillow pouch is placed in a microwave oven (model number “RE-T3”, manufactured by SHARPE Corporation) with its second end portion facing downward and in a self-supporting state, and heated at 600 W for 3 minutes. As a result, steam automatically escaped from the steam removal mechanism during heating. Also, when the pillow pouch was taken out from the microwave oven after heating and placed on a table so that the second end portion was on the lower side, the pillow pouch became self-supporting. After that, when the pillow pouch was opened so as to pull off the first end seal portion by pinching the gassho seal portion and the back surface, the self-standing state could be maintained and the fried rice could be eaten.

<Example 4>
In Example 4, a pillow pouch was obtained in the same manner as in Example 3 except that 60 g of potato chips was filled as the content. And the pouch which concerns on Example 4 is arrange | positioned in the microwave oven (model number "RE-T3", SHARPE Co., Ltd. product) in the state which the 2nd edge part became a lower side and was made to stand, and is 600 W and 30 seconds. When heated, steam automatically escaped from the steam removal mechanism during heating. Also, when the pillow pouch was taken out from the microwave oven after heating and placed on a table so that the second end portion was on the lower side, the pillow pouch became self-supporting. After that, when the pillow pouch was opened so that the first palm seal portion and the back surface were picked and the first end seal portion was peeled off, the self-standing state could be maintained, and the potato chips could be eaten.

10-1, 10-2, 10-3, 10-4 ... Pillow pouch 10A ... 1st end part 10B ... 2nd end part 10C ... 3rd end part 10D ... 4th end part 10E ... Palm part 10F-10I ... Outer edge 11 ... Front surface 12 ... Back surface 13 ... Side surface 14, 61 ... First end seal portion 15, 62 ... Second end seal portion 16, 63 ... Gassho seal portion 17, 51, 64, 65 ... Gusset fold Part 18, 66 ... Vapor removal mechanism 19, 20, 31, 67 ... Thermosoftening resin layer 21, 22 ... Unsealing starting means 23 ... Unsealing induction part 40 ... Packaging material 41 ... Base material layer 42 ... Sealant layer

Claims (1)

A pillow pouch formed of a packaging material having at least a base material layer and a sealant layer in this order, and having a front surface, a back surface, and an accommodation space for accommodating contents between the front surface and the back surface,
A first end,
A second end opposite to the first end,
A third end and a fourth end extending between the first end and the second end;
A first end seal portion formed on the first end portion;
A second end seal portion formed on the second end;
A palm-sealing seal portion formed from the first end seal portion to the second end seal portion,
A first gusset folding portion formed on the third end side,
A steam removal mechanism for automatically removing steam in the storage space when the contents are cooked, the pillow pouch.

Images