JP2019163083A - Pillow pouch and its manufacturing method - Google Patents

Abstract

To provide a pillow pouch from which steam can be released and with which contents can be eaten without being moved onto a plate after cooking.SOLUTION: Provided is a pillow pouch 10-1 which includes: a first end part 10A; a second end part 10B on the opposite side of the first end part 10A; a third end part 10C and a fourth end part 10D extending between the first end part 10A and the second end part 10B; a first end part seal part 14 formed on the first end part 10A; a second end part seal part 15 formed on the second end part 10B; a hand-clasping seal part 16 formed across the first end part seal part 14 and the second end part seal part 15; a gusset in-folding part 17 formed on the side of the third end part 10C; and a steam releasing mechanism 18 automatically releasing the steam inside the storage space during cooking.SELECTED DRAWING: Figure 1

Description

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

  Conventionally, pillow pouches that can contain contents such as frozen foods have been widely used. Some of the pillow pouches include a steam venting mechanism for automatically letting off steam generated by heating in a microwave oven to the outside of the pillow pouch. Although various aspects are known as a steam release mechanism, there exist some which are equipped with a thermosoftening resin layer (for example, refer patent document 1).

  When the steam release mechanism is equipped with a thermosoftening resin layer, the thermosoftening resin layer is softened by heating, so that part of the thermosoftening resin layer and the sealant layer are partially triggered by a decrease in strength of the thermosoftening resin layer. Is destroyed, and the vapor in the pillow pouch can be extracted.

Japanese Patent No. 4501019

  In a pillow pouch equipped with such a steam venting mechanism, the contents are transferred from the pillow pouch to a dish after cooking in a microwave oven, and the contents are eaten. However, at present, after cooking the contents in the pillow pouch, it is desired to eat the contents using the pillow pouch as it is without transferring the contents from the pillow pouch to a dish.

  The present invention has been made to solve the above problems. That is, it aims at providing the pillow pouch which can evacuate steam, and can eat the content, without transferring to a plate after cooking, and the manufacturing method of such a pillow pouch.

  According to one aspect of the present invention, the packaging material is provided with at least a base material layer and a sealant layer in this order, and the contents are accommodated between the front surface, the back surface, and the front surface and the back surface. A pillow pouch having a receiving space, a 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 portion, a first end seal portion formed at the first end portion, a second end seal portion formed at the second end portion, and the first end seal portion The joint seal part formed across the second end seal part, the first gusset fold part formed on the third end part side, and the steam in the accommodation space are automatically generated during cooking of the contents A pillow pouch is provided comprising a steam venting mechanism for automatically venting.

  In the pillow pouch, the pillow pouch further includes an opening start unit provided in at least one of the first end seal part and the second end seal part, and the opening start unit is formed from an outer edge of the third end part. The distance to the opening start means is within 2/3 of the length of the pillow pouch from the outer edge of the third end part to the outer edge of the fourth end part, and the fourth end part from the first gusset folding part You may be provided in the position used as the side.

  The pillow pouch further includes an opening start means provided at least one of the first end seal portion and the second end seal portion, and the opening start means is configured to release the first gusset folding portion from the first gusset folding portion. It may be provided at a position separated by 10 mm or more and 200 mm or less on the four end side.

  The pillow pouch further includes a second gusset folding part 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 part. Also good.

  In the pillow pouch, the steam release 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 part and the second seal end, or from the outer edge to the inner edge of the joint seal part.

  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 palm seal portion extends.

  According to another aspect of the present invention, an original fabric wound with 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 raw roll, and heat-sealing the ends of the packaging material extending in the flow direction so that the sealant layer is inside, Forming a first seal portion to obtain a cylindrical body, folding a part of the cylindrical body inward in the width direction of the cylindrical body, forming the folding section, and forming the folding section, A step of heat-sealing the packaging materials in the width direction of the cylindrical body to form a second seal portion, and obtaining a bag body having one open; a step of filling the bag body with contents; and the content After filling the product, the packaging materials are heat-sealed in the width direction of the bag body, Forming a sealed portion and obtaining a sealed bag body, and the heat-softening resin layer of the packaging material wound around the raw roll is formed in the region where the second seal portion is to be formed and the second A method for manufacturing a pillow pouch is provided which is formed in at least one of the regions where the three seal portions are to be formed.

  According to one aspect of the present invention, it is possible to provide a pillow pouch that can be evacuated and can eat the contents without being transferred to a dish after cooking.

It is a front view of the pillow pouch concerning a 1st embodiment. It is sectional drawing along 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 by FIG. It is a front view of other pillow pouches according to the first embodiment. It is a figure which shows the other steam venting 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 self-supported, and opened it. It is a front view of the pillow pouch concerning a 2nd embodiment. It is a top view for demonstrating the dimension of each component of the pillow pouch shown by FIG. It is a front view of the pillow pouch concerning a 3rd embodiment. It is a top view for demonstrating the dimension of each component of the pillow pouch shown by FIG. It is the figure which opened the pillow pouch which concerns on 3rd Embodiment independence.

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

<< Pillow Pouch >>
The pillow pouch 10-1 shown in FIG. 1 has a storage space for storing contents. Although it does not specifically limit as a content, A foodstuff etc. are mentioned. Specific contents include frozen foods, side dishes, snacks and the like. However, the contents are not limited to these.

  As frozen foods, frozen noodles (frozen pasta, frozen fried noodles, frozen noodles, frozen ramen, frozen vermicelli etc.), for example, frozen side dishes (for example, frozen hijiki, boiled frozen dried radish, frozen meat jaguar, frozen boiled fish, Frozen Chikuzenni, Frozen Soup, Sesame with Frozen Vegetables), Frozen Rice (Frozen Fried Rice, Frozen Pilaf, Frozen Chicken Rice, Frozen Dried Curry, Frozen Boiled Rice, Frozen Boiled Rice, Frozen Boiled Rice, etc.) It is done.

  Examples of side dishes include takoyaki, fried potatoes, fried chicken, Chinese buns, hamburger, meatballs, pork cutlets, croquettes, chicken nuggets, shumai, gyoza, sausage, tonkatsu, caraage, meat dumplings, tempura, green soybeans and the like.

  Snacks include rice crackers such as rice crackers and hail, direct puff snacks, potato chips, corn chips, nuts, pretzels, popcorn, etc., which are mainly made from starchy agricultural products such as potato, wheat flour, corn, rice, etc. Is mentioned. In addition, the snack confectionery shape | molded from these raw materials may be fried or may not be fried.

  As shown in FIGS. 1 and 2, the pillow pouch 10-1 has a front surface 11, a back surface 12, and a side surface 13. The front surface 11 and the back surface 12 have a rectangular outline. 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. 10C and 4th end part 10D, and the palm part 10E formed ranging from 1st end part 10A to 2nd end part 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 not less than 1/4 and not more than 3/2. . If L1 / W1 is 1/4 or more, more contents can be accommodated. If L1 / W1 is 3/2 or less, the pillow pouch is after cooking in a microwave oven and before opening. When 10-1 is made self-supporting, the pillow pouch 10-1 can be made self-supporting stably. The width W1 of the pillow pouch 10-1 is the length of the pillow pouch 10-1 in the horizontal 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 P1 of the pillow pouch is not constant, the width of the pillow pouch is the shortest value. Further, the length L1 of the pillow pouch 10-1 is the length of the pillow pouch 10-1 in the vertical direction DR2. Specifically, the length is from the outer edge 10H of the third end 10C to the outer edge 10I of the fourth end 10D. When the length of the pillow pouch is not constant, the length of the pillow pouch is the shortest value. In the present specification, the dimensions of the pillow pouch and the dimensions of each component constituting the pillow pouch are all values measured in a state in which the pillow pouch is substantially planar 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 at the first end portion 10A, a second end seal portion 15 formed at the second end portion 10B, And a palm seal portion 16 formed from the first end seal portion 14 to the second end seal portion 15. The palm seal portion 16 is provided in the palm portion 10E as shown in FIG.

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

<Guset insert part>
The gusset folding part 17 is formed by folding the side surface 13 in half. By providing the gusset folding part 17 in the 3rd end part 10C, the pillow pouch 10-1 can be made independent after the heat cooking in a microwave oven. Moreover, since the accommodation space can be enlarged, a larger content can be accommodated. The gusset folding part 17 is formed along the direction in which the palm seal part 16 extends.

  The ratio (W2 / W1) of the width W2 (see FIG. 3) of the gusset folding part 17 to the width W1 of the pillow pouch 10-1 is preferably 1/7 or more and 4/7 or less. If W2 / W1 is 1/7 or more, more contents can be accommodated, and when the pillow pouch 10-1 is made self-supporting after opening, the pillow pouch can be stably made self-supporting. Moreover, 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 portion 10C to the folding line 17A. When the width of the gusset folding part is not constant, the width of the gusset folding part is the shortest value. The width W2 of the gusset folding part 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 located 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 second end portion 10B. This is the part that seals the gap. 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 (see FIG. 3) of the first end seal portion 14 and the width W4 (see FIG. 3) of the second end seal portion 15 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 5 mm or more, the first end seal portion 14 and the second end seal portion 15 are surely sealed. If it is 15 mm or less, it is possible to secure a wider accommodation space. In this specification, “width” in each seal portion means a length in a direction orthogonal to the extending direction of the seal portion. In addition, when the width | variety of a seal part is not constant, let the width | variety of a seal part be the shortest value among the length of the direction orthogonal to the direction where a seal part is extended.

<Grip seal part>
The joint seal portion 16 is a portion that seals between the end portions of the packaging material 40 constituting the pillow pouch 10-1 extending in the lateral direction DR1 on the front surface 11. The joint seal part 16 is formed by heat-sealing the ends of the packaging material 40.

  The joint seal portion 16 is formed to extend from the first end seal portion 14 to the second end seal portion 15. As shown in FIG. 1, the joint 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. The width W5 (see FIG. 3) of the palm seal portion 16 is preferably 5 mm or more and 15 mm or less, for example. If the width W5 of the joint seal portion 16 is 5 mm or more, the joint seal portion 16 can surely seal, and if it is 15 mm or less, a wider accommodation space can be secured.

The joint 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 portion 10D to the palm seal portion 16 is shorter than the distance from the outer edge 10H of the third end portion 10C to the palm seal portion 16. When the palm seal portion 16 is located on the fourth end portion 10D side, when the pillow pouch 10-1 is opened and self-supported, the opening is larger and stable, so 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 vent mechanism 18 that automatically vents steam in the accommodation space when the contents are cooked. .

<Vapor venting mechanism>
The steam release mechanism 18 is composed of thermosoftening resin layers 19 and 20. Since the thermosoftening resin layers 19 and 20 are softened during cooking by providing the thermosoftening resin layers 19 and 20 between the base material layer 41 and the sealant layer 42 described later, the thermosoftening resin layer 19 and 20 As a result, the heat softening resin layers 19 and 20 and a part of the sealant layer 42 are partially broken, and thereby the vapor in the pillow pouch 10-1 can be extracted.

  In the pillow pouch 10-1 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 provided on 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 softening resin layer 19 extends from the outer edge 14A to the inner edge 14B of the first end seal portion 14 and the heat softening resin layer 20 extends from the outer edge 15A to the inner edge 15B of the second end seal portion 15 to Since the accommodation space of the pillow pouch 10-1 is connected to the outside in the lateral direction DR1 due to the softening of the heat-softening resin layers 19 and 20 during cooking, steam in the accommodation space of the pillow pouch 10-1 can be extracted.

  The width W6 (see FIG. 3) of the thermosoftening resin layer 19 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 (FIG. 3). 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 protrudes from the first end seal portion 14, and the thermosoftening resin layer 20 protrudes from the second end seal portion 15. Even when the seal positions of the first end seal portion 14 and the second end seal portion 15 are slightly shifted by setting the widths W6 and W7 of the heat softening resin layers 19 and 20 to such a width. The heat-softening resin layers 19 and 20 can be reliably disposed from the outer edges 14A and 15A of the first end seal part 14 and the second end seal part 15 to the inner edges 14B and 14B. The widths W6 and W7 of the thermosoftening resin layers 19 and 20 are preferably 6 mm or more and 50 mm or less, for example.

  The location where the palm seal portion exists in the first end seal portion and the location where the palm seal portion exists in the second end seal portion are weak in strength. 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. In the case where it is provided, steam is generated during the cooking and the viewpoint of improving the strength of the location where the palm seal portion 16 exists in the first end seal portion 14 and the location where the palm seal portion 16 exists in the second end seal portion 15. From the viewpoint of easy removal, the heat-softening resin layers 19 and 20 are preferably provided so as to include the positions where the palm seal portions 16 in the first end seal portion 14 and the second end seal portion 15 exist. .

  Although the heat softening resin layer 19 shown in FIG. 1 is partially provided on the first end seal portion 14 and the heat softening resin layer 20 is partially provided on the second end seal portion 15. 4, the thermosoftening resin layer 31 may be partially provided on the palm seal part 16 as in the pillow pouch 10-2 shown in FIG. When the heat-softening resin layer is present in the first end seal part or the second end seal part, the contents are placed with either the first end seal part or the second end seal part facing down. If the vertical filling is performed, the weight of the contents cannot be withstood and the first end seal part or the second end seal part may open. If the first end seal portion 14 or the second end seal portion 15 has no heat softening resin layer even when longitudinal filling is performed, the first end portion is provided. There is no possibility that the seal part 14 or the second end seal part 15 will open. The thermosoftening resin layer 31 is provided at the center of the palm seal portion 16.

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

  The vapor venting mechanism 18 shown in FIG. 1 is composed of the heat-softening resin layers 19 and 20, but can also be composed of a seal portion. In this case, it is not necessary to provide a heat softening resin layer. When the steam release mechanism 18 is constituted by a joint seal part, as shown in FIG. 5A, a joint seal part 16 having a projecting part 16C partially projecting on the base 10J side of the joint part 10E may be used. . In this case, the width of the protruding portion 16C and the width of the portion other than the protruding portion in the palm seal portion 16 are substantially uniform. Since the protruding portion 16C protrudes toward the accommodation space from the other part of the palm seal portion 16, when the pressure in the pillow pouch 10-1 increases with heating by the microwave oven, stress is applied to the protruding portion 16C. It becomes easier to concentrate. Thereby, seal retreat progresses from the protrusion 16C, and steam can be extracted. In the present specification, the “base portion of the palm portion” means a portion located on the accommodation space side of the palm portion.

  As shown in FIG. 5B, a notch 16D may be provided on the tip 10K side of the palm portion 10E in the palm seal portion 16. In the joint palm seal portion 16 provided with such a notch 16D, the portion provided with the notch 16D has a smaller seal width than the other portions, so that the inside of the pillow pouch 10-1 is accompanied by heating by the microwave oven. When the pressure increases, the joint seal part 16 retreats from the base 10J side of the joint part 10E, and when it reaches the notch 16D, steam can be extracted from the notch 16D.

  As shown in FIG. 5C, a through hole 16 </ b> E may be provided in the palm seal part 16. In the palm seal portion 16 provided with such a through-hole 16E, the portion provided with the through-hole 16E has a smaller seal width than the other portions, so that the inside of the pillow pouch 10-1 with heating by the microwave oven When the pressure increases, the joint seal part 16 moves backward from the base 10J side of the joint part 10E, and when it 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 opening start means 21 and 22 that can be a starting point when opening. The opening start means may be provided in either the first end seal portion or the second end seal portion.

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

  The ratio (D1 / W2, D2 / W2) of the distances D1, D2 (see FIG. 3) from the outer edge 10H of the third end portion 10C to the opening start means 21, 22 with respect to the width W2 of the gusset folding portion exceeds 1 and 20 The following is preferable. When opening at the position of the gusset folding part, the packaging material must be opened at the position where four sheets overlap, so it is difficult to open, but if the above D1 / W2 or D2 / W2 exceeds 1, two packaging materials will overlap It is easy to open because it will be opened at a different position. Moreover, if D1 / W2 or D2 / W2 exceeds 1, it is possible to prevent the contents from spilling when opened. Further, if the above D1 / W2 or D2 / W2 is 20 or less, the pillow pouch 10-1 can be made stable and 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, D2 from the third end portion 10C to the opening start means 21, 22 with respect to the width W1 of the pillow pouch 10-1 is preferably 1-20. If D1 / W2 or D2 / W2 is 1 or more, more contents can be accommodated. If D1 / W2 or D2 / W2 is 20 or less, after cooking in a microwave oven, When the pillow pouch 10-1 is made independent after opening, the pillow pouch 10-1 can be stably made independent.

  The opening start means 21 and 22 are notches. The opening start means is not limited to a notch, and 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 23, the pillow pouch 10-1 can be opened along the opening guide 23 when opening from the opening start means 21 or the opening start means 22. The opening guide 23 shown in FIG. 1 is in contact with the opening start means 21, 22, but may be in a position within 2 mm from the tip of the opening start means 21, 22, for example.

<Opening guide>
The opening guide part 23 is a continuous half-cut line that penetrates the base material layer 41 described later and does not penetrate the sealant layer 42. The opening guide part may be an intermittent line instead of a continuous line. The opening guide part 23 can be formed with a laser or a blade, for example.

  The opening guide part 23 may be composed of a straight cut film. A straight cut film is a film that can be torn in a straight line in one direction. In the straight cut film, the tensile strength in the MD direction (flow direction of the film) is larger than the tensile strength in the TD direction (direction perpendicular to the MD direction). In the case where the opening guide part is formed of a straight cut film, a straight cut film is used for at least one of the base material layer and the sealant layer. When a straight-cut film is used for 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. In addition, the tensile strength in MD direction of Emblet (registered trademark) PC is 200 MPa, and the tensile strength in TD direction is 180 MPa. Moreover, when using a straight cut film for the sealant layer, for example, ZK500R manufactured by Toray Film Processing Co., Ltd. can be used as the sealant layer.

  As shown in FIG. 6, the pillow pouch 10-1 includes 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, the 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-deposited stretched polyethylene terephthalate film, an alumina-deposited stretched polyethylene terephthalate film, a stretched nylon film, a stretched polypropylene film, or a polypropylene / ethylene-vinyl alcohol copolymer co-pressed co-stretched film Alternatively, a composite film obtained by laminating two or more of these films can be used.

  The base material layer 41 is preferably biaxially stretched. Thereby, the molecule | numerator which comprises the base material layer 41 is located in a extending | stretching direction by an extending | stretching process, and the base material layer 41 comes to exhibit the outstanding 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 determined by randomly measuring the thickness at 10 locations from a cross-sectional photograph of the base material layer taken using an optical microscope, and obtaining the arithmetic average value of the measured thicknesses. In the pillow pouch, the base material layer 41 is disposed on the outermost side.

<Sealant layer>
The sealant layer 42 is provided in order to seal the accommodation space of the pillow pouch 10-1 by overlapping the two packaging materials 40 and heat-sealing the ends. For this reason, in the pillow pouch 10-1, it arrange | positions so that the sealant layer 42 may become the accommodation space side most.

  As the sealant layer 42, a heat-resistant film made of a polyolefin resin such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-propylene block copolymer, an easy peel film, or the like can be used. The sealant layer 42 may have a single layer structure or a multilayer structure. Since the pillow pouch 10-1 is heated in a microwave oven, the sealant layer 42 is mainly preferably a low-density polyethylene layer (LDPE layer) 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, it is excellent in impact resistance against dropping that may occur in the flow process of the pillow pouch 10-1, and if it is 80 μm or less, it is easy to handle contents. Excellent. 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 print layer 43 can be composed of a plurality of ink layers. Specifically, for example, the printing layer is formed in the order of black ink layer / blue ink layer / red ink layer / yellow ink layer / white ink layer from the base material layer to 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 nitrified cotton, or polyamide, nitrified cotton, and polyethylene wax. It can form using resin to contain. 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. If 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. Also, if the thickness of the heat-softening resin layer is too thick, depending on the pattern of the heat-softening resin layer, when the obtained film-shaped packaging material is wound into a roll, a part of the heat-softening resin layer rises, and the packaging of that part 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 elongation 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 also the same as the thermosoftening resin layer 19, so the description thereof will be omitted here.

<Junction layer>
As the bonding layer 44, for example, an adhesive generally used in a known dry lamination method can be used. For example, a polyvinyl acetate adhesive, a polyacrylate 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, and the like can be used. The polyurethane-based adhesive is a cured product of a polyol compound and an isocyanate compound.

<< Pillow Pouch Manufacturing Method >>
Such a pillow pouch 10-1 can be manufactured as follows. Below, the example which manufactures several pillow pouch 10-1 continuously is shown.

  First, an original fabric roll around which the packaging material 40 is wound is prepared. In the raw fabric roll, the widths of the heat-softening resin layers 19 and 20 are formed in a part of a region where the second seal portion and the third seal portion, which will be described later, in the packaging material 40 are formed. It is formed so as to be larger than the width of the part seal part. In the case where a plurality of pillow pouches are continuously formed, when attention is paid to any one pillow pouch, the second seal portion is the first end of the pillow pouch on the downstream side adjacent to the second end seal portion of the pillow pouch. The end seal portion is connected, and the third seal portion is a connection between the third end seal portion of the pillow pouch and the second end seal portion of the adjacent upstream pillow pouch. In the packaging material, an opening guide portion is formed 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 raw roll, and heat-sealed with the sealant layers 42 facing each other at both ends extending in the flow direction of the packaging material 40, along the flow direction of the packaging material 40. An extended first seal portion is formed to obtain a cylindrical body. The first seal portion is a portion that becomes the palm seal portion 16 in the pouch 10-1. After obtaining the cylindrical body, a part of the cylindrical body is folded inward in the width direction of the cylindrical body, which is a direction orthogonal to the flow direction, with a predetermined width, thereby forming a folded portion.

  After forming the folding part, the packaging materials 40 are heat-sealed in the width direction of the cylindrical body to form the second seal part, and a bag body in which one side is opened is obtained. The second seal portion is formed so that the portion of the first seal portion in 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.

  Thereafter, the contents are filled from the opening of the bag. And the packaging materials 40 are heat-seal | fused in the width direction of a bag body, the 3rd seal part is formed, 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 so that the portion of the first seal portion in the third seal portion is included in the formation region of the thermosoftening resin layer 20. Thereafter, a through hole or a notch is formed at the position of the opening guide portion 23 in the second seal portion and the third seal portion. The through-holes or cuts become the opening start means 21 and 22 after the bag body is cut. Thereafter, the bag body is cut in a direction perpendicular 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 steam venting mechanism 18 is provided, steam can be vented from the accommodation space during cooking with a microwave oven. Moreover, since the gusset folding part 17 is provided, the pillow pouch 10-1 can be made independent after heat cooking. Thereby, after opening, the contents can be eaten in the state shown in FIG. 7 without being transferred to a dish after cooking.

  In the pillow pouch 10-2 shown in FIG. 4, since the palm seal portion 16 includes the thermosoftening resin layer 31 that is a steam release mechanism, steam escapes from the palm seal portion 16 during cooking in a microwave oven. . For this reason, in the pillow pouch 10-2, it is necessary to arrange so that the palm seal portion 16 is on the upper side when the microwave oven is cooked. Therefore, in this case, a pattern is mainly formed mainly on the front surface 11 on which the palm seal part 16 visually recognized during cooking is present. On the other hand, in the pillow pouch 10-1 shown in FIG. 1, the first end seal portion 14 and the second end seal portion 15 are provided with the steam venting mechanism 18, so that the cooking is performed in the microwave oven. Steam escapes from the lateral direction DR1 of the pillow pouch 10-1. For this reason, you may arrange | position so that the palm seal part 16 of the pillow pouch 10-1 may become any of an upper side and a lower side. Therefore, since a 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 the dimensions of each component of the pillow pouch shown in FIG. 8 and 9, members denoted by the same reference numerals as those in FIG. 1 and the like are the same as those shown in FIG.

  The pillow pouch 10-3 shown in FIG. 8 is provided with not only the gusset folding part 17 on the third end part 10C side but also the gusset folding part 51 (second gusset folding part) on the fourth end part 10D side. Yes. By providing the gusset folding parts 17 and 51 on both sides of the pillow pouch 10-3, the accommodation space can be further increased, so that a larger content can be accommodated.

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

  The ratio (W9 / W1) of the width W9 (see FIG. 9) of the gusset folding part 51 to the width W1 of the pillow pouch 10-3 is preferably 1/7 or more and 4/7 or less. If the W9 / W1 is 1/7 or more, more contents can be accommodated. If W9 / W1 is 4/7 or less, the contents can be easily taken out. The width W9 of the gusset folding part 51 is the length of the longitudinal direction DR2 of the gusset folding part 51. Specifically, it is the length from the outer edge 10I of the fourth end 10D to the folding line 51A. When the width of the gusset folding part is not constant, the width of the gusset folding part is the shortest value. The width W9 of the gusset folding part 51 may be 10 mm or more and 170 mm or less. In addition, since ratios, such as width W2-W7, length L1, and L1 / W1, are the same as that of 1st Embodiment, description shall be abbreviate | omitted here.

<Opening start means>
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. And the opening start means 21 and 22 are provided in the position which becomes the 3rd end part 10C side rather than the gusset folding part 51, although it is provided in the position which becomes the 4th end part 10D side from the gusset folding part 17. Yes. Since the opening start means 21 and 22 are provided in such a position, when eating the contents after opening, the contents are not too deep and easy to eat, and do not overlap with the gusset folding parts 17 and 51. The pillow pouch can be opened easily. Specifically, the opening start means 21 and 22 are separated from the gusset folding part 17 by 10 mm or more and 200 mm or less from the gusset folding part 17 to the fourth end part 10D, and from the gusset folding part 51 to the third end part 10C by 10 mm or more. It is preferable to be provided.

  According to this embodiment, since the steam venting mechanism 18 is provided as in the first embodiment, steam can be vented from the accommodation space during cooking with a microwave oven. Moreover, since the gusset folding part 17 is provided, the pillow pouch 10-1 can be made independent after heat cooking. Thereby, after opening, the contents can be eaten without being transferred to a dish after cooking.

  Since the pillow pouch 10-3 includes the gusset folding portions 17 and 51 on both sides, the pillow pouch 10-3 can accommodate more contents. Since the pillow pouch 10-3 may spill when opened when containing more contents, such a pillow pouch 10-3 has a content such that the volume after cooking is less than the volume before cooking (for example, frozen 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 component of the pillow pouch shown in FIG. 10, and FIG. 12 shows the third embodiment. It is the figure which opened the pillow pouch which made it self-support. 10 to 12, members denoted by 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 horizontal 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, the pillow pouch 10- is after cooking in a microwave oven and before opening. When 4 is made independent, the pillow pouch 10-4 can be made stable and independent. The lower limit of L2 / W10 is more preferably 1/4 or more, and the upper limit of L2 / W10 is more preferably 1 or less.

  The width W10 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 portion 61, a second end seal portion 62, a palm seal portion 63, gusset folding portions 64 and 65, and a steam release mechanism 66. 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 at the first end portion 10A, and the second end seal portion 62 is formed at 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 explanation will be omitted. The widths W11 and W12 of the first end seal portions 61 and 62 are the same as the widths W3 and W4 of the first end seal portions 14 and 15, respectively.

<Grip seal part>
The joint seal part 63 is formed from the first end seal part 61 to the second end seal part 62. The joint seal part 63 is the same as the joint seal part 16 except that the joint seal part 63 extends in the vertical direction DR2, and the description thereof will be omitted here. The width W13 of the palm seal part 63 is the same as the width W5 of the palm seal part 16.

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

  The ratio (W14 / W10, W15 / W10) of the widths W14, W15 (see FIG. 11) of the gusset folding parts 64, 65 to the width W10 of the pillow pouch 10-4 may be 1/20 or more and 3/7 or less. preferable. If W14 / W10 and W15 / W10 are 1/20 or more, more contents can be accommodated and the pouch 10-4 can be made to stand on its own. Moreover, 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 part 64 is the length of the gusset folding part 64 in the horizontal 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 part 65 is the length of the gusset folding part 65 in the horizontal direction DR1. Specifically, it is the length from the outer edge 10I of the fourth end 10D to the folding line 65A. When the width of the gusset folding part is not constant, the width of the gusset folding part is the shortest value. The widths W14 and W15 of the gusset folding parts 64 and 65 may be 10 mm or more and 170 mm or less.

<Vapor venting mechanism>
The steam release 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. It may be provided at the position of the line 65 </ b> A, or may be provided at both the positions of the folding lines 64 </ b> A and 65 </ b> A in the first end seal portion 61.

  The thermosoftening resin layer 67 extends from the outer edge 61 </ b> A to the inner edge 61 </ b> B of the first end seal portion 61. When 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 DR2 due to softening of the thermosoftening resin layer 67 during cooking. Since it connects with the outside, the vapor | steam of the accommodation space of the pillow pouch 10-4 can be extracted.

  The width W16 (see FIG. 11) of the thermosoftening resin layer 67 is larger than the width W11 of the first end seal portion 61 for the same reason as described for the width W6 of the thermosoftening resin layer 19. 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 place where the fold line of the gusset folding part in the first end seal part is weak in strength. For this reason, as shown in FIG. 10, when the heat-softening resin layer 67 is partially provided on the first end seal portion 61, 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 part and from the viewpoint of easily removing steam during cooking, the thermosoftening resin layer 67 is provided so as to include the folding line 64A of the gusset folding part 64 in the first end seal part 61. Is preferred.

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

  Since the pouch 10-4 is not provided with the opening start means as described above, when opening the pouch 10-4, the first seal part 63 and the back surface 12 in the upper part of the pouch 10-4 are picked, and the first 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 steam venting mechanism 66 is provided, steam can be vented from the accommodation space during heating cooking in the microwave oven, as in the first embodiment. Moreover, since the gusset folding parts 64 and 65 are provided, many contents can be located in the 2nd end part 10B side, and even if it does not provide a gusset folding part in a bottom part, the pillow pouch 10-4 is made independent. be able to. Thereby, after opening, the contents can be eaten without being transferred to a dish after cooking.

  Since the pillow pouch 10-4 includes the gusset folding portions 64 and 65 on both sides, the pillow pouch 10-1 can accommodate more contents. Since the pillow pouch 10-4 may spill when opened when containing more contents, such a pillow pouch 10-4 has a content (for example, frozen) whose volume after cooking is less than that before cooking. It is particularly suitable for housing fried rice.

  In order to describe the present invention in detail, examples will be described 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 consists of a base 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 something to prepare. In the packaging material, the width of the thermosoftening resin layer is the second seal portion in a part of a formation planned region for forming a second seal portion and a third seal portion described later between the base material layer and the bonding layer. A heat-softening resin layer made of MICOP varnish made 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. In addition, the packaging material has a continuous line-shaped half-cut line that is an opening 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. Was formed.

  Next, heat sealing was performed in a state where both end portions extending in the flow direction of the packaging material were inside the sealant layers to form a first seal portion extending along the flow direction of the packaging material, thereby obtaining a cylinder. . After obtaining the cylindrical body, one side of the cylindrical body was folded inward in the width direction of the cylindrical body with a predetermined width, and a folded portion was formed on one side.

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

  Thereafter, 170 g of fried rice as a content was filled from the opening of the bag. And packaging materials were heat-seal | bonded in the width direction of the bag body, the 3rd seal part was formed, and the sealed bag body was obtained. The 3rd seal part was formed so that the portion of the 1st seal part in the 3rd seal part might be included in the formation field of a thermosoftening resin layer.

  Thereafter, 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 the flow direction of the packaging material is a position where the through hole is divided. The bag body was cut in the orthogonal direction. As a result, 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 vertical direction of 120 mm and a width W1 in the horizontal 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. Moreover, the width W5 of the palm seal part 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.

  And when the obtained pillow pouch is placed in a flat state in a microwave oven (model number “RE-T3”, manufactured by SHARPE Co., Ltd.) and heated at 600 W for 3 minutes, it is removed from the steam release mechanism during heating. Vapor escaped automatically. Moreover, when the pillow pouch was taken out of 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 independent. After that, when I opened the pillow pouch from the notch, I was able to eat fried rice because I was able to maintain independence.

<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 were filled as the contents. The pouch according to Example 2 was placed in a flat state in a microwave oven (model number “RE-T3”, manufactured by SHARPE Co., Ltd.) and heated at 600 W for 30 seconds. The steam automatically escaped. Moreover, when the pillow pouch was taken out of 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 independent. After that, when the pillow pouch was opened from the notch, it was able to maintain its independence, so it was possible to eat potato chips.

<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 consists of a base 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 something to prepare. In the packaging material, the width of the heat-softening resin layer is larger than the width of the third seal portion in a part of a formation scheduled region for forming a third seal portion described later between the base material layer and the bonding layer. Thus, a heat-softening resin layer made of MWOP varnish made by DIC Graphics Co., Ltd. having a length of 20 mm, a width of 35 mm, and a thickness of 2 μm was provided.

  Next, both ends extending in the flow direction of the packaging material are heat-sealed with the sealant layers facing each other to form a first seal portion extending along the flow direction of the packaging material, thereby obtaining a cylinder. It was. After obtaining the cylindrical body, both sides of the cylindrical body were folded inward in the width direction with a predetermined width, and folded portions were formed on both sides.

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

  Thereafter, 170 g of fried rice as a content was filled from the opening of the bag. And packaging materials were heat-seal | bonded in the width direction of the bag body, the 3rd seal part was formed, and the sealed bag body was obtained. The third seal portion was formed so that the fold line of the gusset fold portion in the third seal portion was included in the formation region of the thermosoftening resin layer.

  Thereafter, 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 the flow direction of the packaging material is a position where the through hole is divided. The bag body was cut in the orthogonal direction. Thereby, a pillow pouch having the same structure as the pillow pouch shown in FIG. 10 was produced. The produced pillow pouch had a vertical length L2 of 150 mm and a horizontal width W10 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 10 mm, respectively, and the width W13 of the palm seal portion was 10 mm. Moreover, the widths W14 and 15 of the gusset folding part were 30 mm. The dimensions of L2, W10 to W15, etc. were as shown in FIG.

  The obtained pillow pouch is placed in a microwave oven (model number “RE-T3”, manufactured by SHARPE Co., Ltd.) in a state where the second end is on the lower side and is self-supported, and heated at 600 W for 3 minutes. As a result, steam was automatically removed from the steam venting mechanism during heating. Moreover, when the pillow pouch was taken out from the microwave oven after heating and placed on the table so that the second end portion was on the lower side, the pillow pouch was self-supporting. Then, when the pillow pouch was opened so that the palm seal part and the back surface were picked and the first end seal part was peeled off, the self-supporting 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 were filled as the contents. Then, the pouch according to Example 4 is placed in a microwave oven (model number “RE-T3”, manufactured by SHARPE Co., Ltd.) with the second end on the lower side and in a self-supporting state at 600 W for 30 seconds. When heated, the steam was automatically removed from the steam release mechanism during the heating. Moreover, when the pillow pouch was taken out from the microwave oven after heating and placed on the table so that the second end portion was on the lower side, the pillow pouch was self-supporting. Then, when the pillow pouch was opened so that the palm seal part and the back surface were picked and the first end part seal part was peeled off, the self-supporting state could be maintained, and the potato chip could be eaten.

10-1, 10-2, 10-3, 10-4 ... Pillow pouch 10A ... First end 10B ... Second end 10C ... Third end 10D ... Fourth end 10E ... Palming portions 10F-10I ... Outer edge 11 ... Front surface 12 ... Back surface 13 ... Side surfaces 14, 61 ... First end seal portion 15, 62 ... Second end seal portion 16, 63 ... Joint seal portions 17, 51, 64, 65 ... Gusset folding Portions 18, 66 ... Vapor venting mechanisms 19, 20, 31, 67 ... Thermosoftening resin layers 21, 22 ... Opening start means 23 ... Opening guide portion 40 ... Packaging material 41 ... Base material layer 42 ... Sealant layer

Claims (8)

A pillow pouch formed of a packaging material including at least a base material layer and a sealant layer in this order, and having a front surface, a back surface, and a storage space for storing 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 at the first end;
A second end seal portion formed at the second end;
A palm 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 pillow pouch comprising: a steam venting mechanism that automatically vents steam in the accommodation space during cooking of the contents.   The apparatus further comprises an opening start means provided in at least one of the first end seal portion and the second end seal portion, the opening start means from the outer edge of the third end portion to the opening start means The distance is within 2/3 of the length of the pillow pouch from the outer edge of the third end portion to the outer edge of the fourth end portion, and at a position closer to the fourth end side than the first gusset folding portion. The pillow pouch according to claim 1, which is provided.   It further comprises an opening start means provided in at least one of the first end seal portion and the second end seal portion, and the opening start means is located on the fourth end side from the first gusset folding portion. The pillow pouch according to claim 1, wherein the pillow pouch is provided at a position separated by 10 mm or more and 200 mm or less.   The second gusset fold portion formed on the fourth end side is further provided, and the opening start means is provided at a position closer to the third end portion than the second gusset fold portion. The pillow pouch according to claim 2 or 3 according to claim 3.   The steam release mechanism includes a thermosoftening resin layer partially laminated between the base material layer and the sealant layer, and the thermosoftening resin layer includes the first end seal portion and the second seal. The pillow pouch according to any one of claims 1 to 4, wherein the pillow pouch is formed so as to extend from the outer edge to the inner edge of at least one of the end portions or from the outer edge to the inner edge of the joint seal portion.   The pillow pouch according to claim 2 or 3, further comprising an opening guide portion provided at a position in contact with or close to the opening start means.   The pillow pouch according to claim 6, wherein the opening guide portion is provided along a direction in which the palm seal portion extends. Preparing a roll of raw material wound with 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;
The packaging material is unwound from the raw fabric roll, and the packaging material is heat-sealed between the ends extending in the flow direction of the packaging material so that the sealant layer is on the inside, thereby forming a first seal portion. And obtaining a cylinder,
Folding a part of the cylindrical body to the inner side in the width direction of the cylindrical body, forming a folded portion,
After forming the folding portion, heat-sealing the packaging materials in the width direction of the cylindrical body, forming a second seal portion, and obtaining a bag body having one open;
Filling the bag with contents;
After the filling of the contents, a step of heat-sealing the packaging materials in the width direction of the bag body to form a third seal portion and obtaining a sealed bag body;
The thermosoftening resin layer of the packaging material wound around the raw fabric roll is formed in at least one of a region where the second seal portion is to be formed and a region where the third seal portion is to be formed. A method for manufacturing a pillow pouch.

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