JP6609908B2 - Microwave oven pouch - Google Patents

Description

  The present invention relates to a microwave oven pouch. In particular, the present invention relates to a pouch that can be used for foods such as curry, stew, oden, and meat potatoes, and side dishes, can be cooked in a microwave oven, and can be used for various purposes.

  Changes in the retail business, such as the reorganization of supermarkets and department stores, and the widespread and transformation of convenience stores, have led to intense competition in processed foods, one of the main products, resulting in product development and product differentiation. There is also a big change in packaging materials. At the same time, with the background of aging and rising environmental awareness, there have been significant changes in people's consumption behavior.

  On the other hand, tray containers, standing pouches and the like are known as containers for prepared foods that are one of processed foods. In modern eating habits where you can shop at supermarkets and convenience stores and have a microwave oven at home, a pouch that can be heated and cooked with a microwave oven is a natural requirement, but in reality, The spread of microwaveable pouches has been slow.

  For example, in the case of a microwave oven, when a metal foil such as aluminum is included in the container material as a gas barrier layer in a microwave oven, there is a problem that metal sparks are generated due to high frequency and cannot be used. Or in the form of a container such as a standing pouch, it is said that there is a problem that it is tall and difficult to fit in compared with a cooking space inside a normal home microwave oven.

  In addition, label trays, general standing pouches, and microwave oven standing pouches that exist as containers for prepared foods have few highly satisfying containers and packaging when considering microwave oven compatibility. It can be said. Table 1 summarizes the results of comparing their functions.

  As is clear from Table 1, none of the items can sufficiently satisfy the requirements. For example, trays with labels are difficult to store, print display area, microwave oven overheatability, etc., and standard standing pouches have difficulties such as shelf life, packaging material usage, microwave oven heatability, etc. In addition, it can be seen that a standing pouch for a microwave oven has difficulty in the amount of packaging material used, ease of holding in a microwave oven, and ease of taking out.

  Furthermore, recently, a new requirement is that consumers can add foods themselves to the food filled in the pouch to reseal, heat, and cook, but the response is delayed.

  There are other gusseted bags with gussets. However, in the case of a gusset bag, steam is generated when trying to cook and heat in the microwave oven as it is, and the internal pressure causes the water vapor to escape from the intersection of the gusset, and the contents may scatter in the microwave oven. As a result, there is a drawback that the inside may be contaminated. In addition, in the case of gusset bags, the internal capacity can be increased, but the amount of packaging material used is increased, and there are many problems in terms of environmental load and cost.

  New demands are emerging from changes in consumer lifestyles. Taking a convenience store, one of the sales channels for pouch foods, as an example, new product development for the elderly, singles, and children is required, and trial and error continues.

  Thus, until now, even though microwave cooking was possible, it was a container with only a specific product or a single purpose function, so it was not easy to use and the application was not widespread. .

  As a food packaging container, it has gas barrier properties and can be preserved by heat sterilization, and it also has a display effect at the distribution and retail stages, convenience in handling in microwave ovens, additional cooking of ingredients, etc. There is a demand for multi-functionality such as a response to the above, and the multi-functionality demands a multi-purpose use.

JP 2000-191057 A

  The present invention has been made in view of such a situation, is excellent in display effect without impairing the function as a packaging material, can be heated and cooked with a microwave oven, has a steaming function, and has packaging efficiency. An object of the present invention is to provide a multipurpose pouch for a microwave oven that is excellent in performance.

As means for solving the above-mentioned problems, the invention according to claim 1 is constituted by using a laminated film comprising at least a base film on the outer surface side and a sealant layer on the inner surface side, and both end portions of the body portion are sealed. Has been
A filling port is formed at the top,
The bottom is formed with a gusset fold fold formed by folding the film into a V shape with a fold line inside,
The bottom is a standing pouch-type packaging bag that can be heated by a microwave oven that is sealed in a standing manner,
A fin-like gusset fold formed by folding the laminated film into a V shape with the sealant inside is provided in parallel with the filling port of the bag body at a predetermined position on one side of the side film of the body portion, This gusset fold is provided with a steam release mechanism,
The fold portion at the bottom is divided by the fold line into a surface on the side with the steam release mechanism and a surface on the other side, and the bottom gusset fold width of the surface on the side with the steam release mechanism, The bottom gusset folding width of the other side surface is a microwave oven pouch characterized by the latter being long.

The invention according to claim 2, the laminate film continuously in the flow Re direction and bag-making by a seal processing, a microwave pouch according to claim 1, characterized in that it is configured in one piece is there.

  The invention described in claim 3 is the microwave oven pouch according to claim 1 or 2, wherein the laminated film includes a gas barrier film formed by depositing an inorganic compound on a plastic film. is there.

  According to the present invention, it is excellent in display effect without impairing the function as a packaging material, can be heated and cooked by a microwave oven, has a steaming function, and has excellent packaging material efficiency. It is possible to provide a pouch.

  According to invention of Claim 2, it becomes possible to provide the pouch for microwave ovens which used the laminated | multilayer film to comprise more efficiently.

  According to the third aspect of the present invention, it is possible to provide a microwave oven pouch that has gas barrier properties, has a long shelf life of the contents, and can visually recognize the contents.

  According to the fourth aspect of the present invention, it is possible to provide a microwave oven pouch that can be self-supported at a desired angle with the bottom portion down.

  According to invention of Claim 5, it becomes possible to provide the pouch for microwave ovens which can use a laminated | multilayer film more efficiently compared with the contents.

  According to the sixth aspect of the present invention, it is possible to provide a microwave oven pouch that is more self-supporting.

  According to the invention of claim 7, when food or the like is sealed and packaged, and the inside of the bag reaches a predetermined internal pressure when heated or cooked by a microwave oven, the steam inside the bag and It becomes possible to provide a microwave oven pouch that can escape from the vent hole to the outside of the bag.

  According to the eighth aspect of the present invention, it is possible to provide a microwave oven pouch that can be cooked by adding or newly enclosing a food on the consumer side.

FIG. 1 is a schematic perspective view of an embodiment of a microwave oven pouch according to the present invention. FIG. 2 is a partial cross-sectional schematic view of one embodiment of a microwave oven pouch according to the present invention. FIG. 3 is an enlarged view of a portion F in the schematic perspective view of the embodiment shown in FIG. 1 of the microwave oven pouch according to the present invention. FIG. 4 is a schematic perspective view of another embodiment of the microwave oven pouch according to the present invention. FIG. 5 is an explanatory view showing dimensions of each part of an embodiment of a microwave oven pouch according to the present invention. FIG. 6 is an explanatory view showing dimensions of each part of Comparative Example 1 of the microwave oven pouch according to the present invention. FIG. 7 is an explanatory view showing dimensions of each part of Comparative Example 2 of the microwave oven pouch according to the present invention.

  In the following, embodiments for carrying out the invention will be described in detail with reference to FIGS. 1 to 4.

  FIG. 1 is a schematic perspective view of an embodiment of a microwave oven pouch according to the present invention. FIG. 2 is a partial cross-sectional schematic view of one embodiment of a microwave oven pouch according to the present invention. The microwave oven pouch (10) is configured by using a one-piece laminated film in which at least an outer surface side is a base film and an inner surface side is a sealant layer.

  Both end portions of the body portion of the pouch are sealed with a side seal portion (C) and a side seal portion (D). The bottom of the bag is formed of a gusset-folded fold formed by folding the film in a V shape inside. Since the bottom gusset is formed by being folded into a V shape, the bottom gusset is divided into a portion that becomes the bottom portion 1 (K) and a portion that becomes the bottom portion 2 (L).

  The bottom side seal part is provided with punch hole processing (G) on the bottom part 1 (K) and the bottom part 2 (L) which face each other, and when this punch hole part is woven into a V shape, the sealant Will face each other and the punch hole will be exposed. When the punched portions are bonded to each other by the seal, the contents are filled and sealed from the filling port portion (A), so that the pouch is provided with the bottom portion (B) facing down.

  Generally, the opening for heating or cooking the microwave oven is a horizontally long rectangle. When heating or cooking food such as food by a microwave oven using the pouch according to the present invention, it can be put into a microwave oven in a flat state with the pattern surface (J) down, like a general standing pouch. It is possible to avoid a situation where it is difficult to enter the microwave oven depending on the height.

  The pouch according to the invention is also provided with a fin-like gusset (M), which is provided with a steam release mechanism (F). Accordingly, when the inside of the bag reaches a predetermined internal pressure during heating or cooking of food using a microwave oven, the steam inside the bag can be automatically released from the steam release mechanism (F) to the outside of the bag.

  FIG. 3 is an enlarged view of a steam venting mechanism (F) portion of the schematic perspective view of the embodiment shown in FIG. 1 of the microwave oven pouch according to the present invention. Since the fin-shaped gusset (M) is formed by being folded back into a V shape, the fin-shaped gusset edge (Q) is folded with the sealant inside. A steam passage seal (P) is provided at the edge portion in the pouch width direction, and a V-shape is formed at the center.

  A notch (R) penetrating the laminated film is provided in the region surrounded by the V shape. By providing a weak portion of the seal, when heating or cooking food with a microwave oven, the pouch expands when the internal pressure of the bag reaches a predetermined internal pressure, and stress is applied to the V-shaped portion of the steam passage seal (P). In order to concentrate and peel off the seal, the steam inside the pouch is discharged from the peeled portion of the seal through the notch (R) to the outside of the bag.

  Thus, according to the present invention, it is possible to provide a microwave oven pouch that can be heated and cooked by a microwave oven, has a steaming function, and has excellent packaging efficiency.

  Hereinafter, the components of the microwave oven pouch according to the present invention will be described in more detail. The microwave oven pouch of the present invention is configured using a laminated film having an outer surface side made of a base film and an inner surface side made of a sealant layer.

For the base film, a plastic film made of a polymer material can be used. The polymer film is a film made of a polymer resin composition, and includes polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamide (nylon-6, nylon-66, etc.), polyimide Etc. can be used, and is appropriately selected according to the application.
In particular, when polypropylene or polyethylene terephthalate is used as a base film, it is more preferable in terms of film strength and price.

  Moreover, a gas barrier layer can be provided in a base film for the purpose of improving the preservability of the food of the contents. The gas barrier layer can be composed of a vapor deposition layer and a coating layer of an inorganic compound. After providing an anchor coat on the base film, the vapor deposition layer and the coat layer are sequentially provided. Alternatively, a gas barrier film having a gas barrier layer may be bonded to the base film.

  For example, urethane acrylate can be used for the anchor coat layer. The coating thickness is preferably in the range of 50 to 65 nm. For the formation of the anchor coat layer, a coating method using a printing technique such as gravure coating with a paint in which a resin is dissolved in a solvent can be used, and a coating film can be formed using a generally known coating method.

  As a method of forming a vapor deposition layer, an inorganic compound such as SiO or AlO is coated on a base film provided with an anchor coat layer using a vacuum vapor deposition method, and an inorganic compound layer is formed by a vacuum vapor deposition method. it can. The thickness of the vapor deposition layer is preferably 15 nm to 30 nm.

  As a method for forming the coating layer, an aqueous solution or water / alcohol containing at least one of a water-soluble polymer and (a) one or more alkoxides or hydrolysates thereof, or (b) tin chloride. A coating agent containing a mixed aqueous solution as a main ingredient is applied on a film and dried by heating to form an inorganic compound layer by a coating method to form a coating layer. At this time, the adhesion with the anchor coat layer can be improved by adding a silane monomer to the coating agent.

  An inorganic compound layer has a gas barrier property only by a coating film formed by a vacuum deposition method, but a coating layer that is an inorganic compound layer formed by a coating method is formed so as to overlap with a deposited layer that is an inorganic compound layer formed by a vacuum deposition method. can do. The thickness of the coat layer is preferably 220 nm to 280 nm. By forming the barrier layer, the gas barrier property is greatly improved, and it can be used as a food pouch capable of long-term storage.

  By combining these two layers, a reaction layer of both layers is formed at the interface between the inorganic compound layer by the vacuum deposition method and the inorganic compound layer by the coating method, or the inorganic compound layer by the coating method becomes an inorganic compound layer by the vacuum deposition method. A dense structure is formed by filling and reinforcing defects such as pinholes, cracks, and grain boundaries, or micropores, so that high gas barrier properties, moisture resistance, and water resistance are achieved, and flexibility that can withstand deformation Therefore, it can also be suitable as a packaging material.

  In addition, when a metal foil such as an aluminum foil is used as a barrier layer, it is known that sparks are caused by high frequency in a microwave oven. In the case of an inorganic compound layer by a vacuum deposition method and an inorganic compound layer by a coating method, There is no fear of sparks. Moreover, the inspection by a metal detector is also possible, and since it is transparent, the contents can be seen from the outside of the pouch.

  As the material for the sealant layer, polyolefin resin is generally used. Specifically, low density polyethylene resin (LDPE), medium density polyethylene resin (MDPE), linear low density polyethylene resin (LLDPE), ethylene -Ethylene resins such as vinyl acetate copolymer (EVA), ethylene-α olefin copolymer, ethylene-methacrylic acid resin copolymer, blend resin of polyethylene and polybutene, homopolypropylene resin (PP), propylene -Polypropylene resins such as ethylene random copolymer, propylene-ethylene block copolymer, and propylene-α-olefin copolymer are used.

  In order to form the sealant layer, the film made of the polyolefin-based resin can be used to laminate the substrate film, or the polyolefin resin can be extruded by an extruder.

  Since the sealant layer is disposed on the inner surface of the laminated film, the film can be folded back so that the sealant layers face each other, and can be sealed by heat and pressure and can be made into a bag. The pouch body is formed by sealing the ends on both sides. Moreover, the bottom part can be made into the bottom part which has a gusset by further folding the film folded back | folded inside in V shape at the folding | turning point further.

  By folding it into a V shape, the bottom part is divided into two parts, a bottom part 1 (K) and a bottom part 2 (L), and these two and the trunk part form an intersection. For the purpose of ensuring the self-supporting of the pouch in the vicinity of the intersection and at the end of the bottom, punch hole processing (G) is performed to seal the two bottoms from each other.

  Since there is a semicircular punch hole formed in the end portion, the sealant of the laminated body which is opposed and overlapped by V-shaped folding is exposed in a semicircular shape, so that sealing is possible. By this processing, the pouch filled with the contents and sealed can be self-supported in a state where the pouch is spread with the bottom (B) down.

  The filled pouches are shipped and sold as commodities. At that time, the pouches can be displayed in a self-supporting state with the bottom (B) down. At this time, by keeping the bottom 1 (K) longer than the bottom 2 (L), the pattern surface (J) becomes self-supporting in a diagonally upward shape, so that the pattern surface is more easily visible. An effective display effect can be realized. The pattern can also be provided on the back side (N) of the pattern.

  The pattern can be provided on the front surface or the back surface of the base film using a known printing technique. Although the printing method is not particularly limited, for example, a gravure printing method can be used.

  The selection of the printing ink is not particularly limited, but can be selected as appropriate in consideration of printability on a film, safety to food and the environment, and the like. Further, instead of direct printing, a printed label may be attached.

As a result of intensive studies and repeated experiments, the bottom 1 length (4) which is the length of the bottom 1 (K)
And the difference between the bottom 2 length (3), which is the length of the bottom 2 (L), has found that the bottom 1 (4) is appropriately 20 mm or longer. By providing this difference, the pouch exhibited independently can have a favorable inclination and contributes to an improvement in filling efficiency.

  Further, a fin-like gusset (M) is provided in the pouch width direction with the sealant inside the V-shape on the bottom 2 (3) side at a position close to the pouch filling port (A). The fin-shaped gusset (M) is provided with a steaming section seal, and a steam venting mechanism comprising a V-shaped steaming section seal (P) and a notch (R) surrounded by the V-shaped steaming section seal at the center in the width direction. (F) is provided.

  The vapor passage seal (P) is provided along the fin-shaped gusset edge (Q), and as a result of repeated experiments, we have determined that the vapor passage seal width (8) is 3 mm to 5 mm. I found out. In the steam release mechanism (F), the steam passage seal (P) is separated from the fin-like gusset edge (Q) to form a V shape.

  When the pouch is heated and cooked with a microwave oven, pressure is generated inside the pouch due to the generated steam, and when the pouch swells round, stress concentration occurs at the tip of the V-shaped valley and the seal peels off. As a result, the steam generated inside is automatically discharged outside through the notch (R).

  The microwave oven pouch according to the present invention is used with the pattern surface (J) facing down, i.e., the steam release mechanism (F) facing up, when being heated and cooked in a microwave oven. By doing this, when the steaming function is automatically activated during heating and cooking, it is possible to avoid the contents being scattered in the microwave oven and contaminating the inside, and only the steam is discharged from the pouch. can do.

  As a result of repeated experiments after extensive studies, it was found that the V-shaped vapor passage width (9) of the steam release mechanism (F) is suitably 15 to 30 mm. Moreover, it discovered that 10 mm-15 mm was suitable for the steaming part V-shaped height (7).

  Since the seal conditions of the side seal (C), side seal (D), bottom seal (E), and steaming section seal (P) are items related to retort suitability and steaming performance, the sealing conditions are also examined. did. The material configuration of the pouch at this time and the dimensions of each part are as follows.

Material composition: Polyethylene terephthalate film (thickness 12 μm) + inorganic compound vapor deposition layer / dry lamination / sealant layer (CMPS (registered trademark) 013C manufactured by Mitsui Chemicals, Inc.)
Dimensions of each part:
Refer to FIG.
(1) Pouch length: 150mm
(2) Pouch width: 140mm
(3) Bottom 2 length: 20 mm
(4) Bottom 1 length: 40 mm
(5) Fin-shaped gusset length: 15 mm
(6) Pouch mouth length: 50mm
The results are shown in Table 2.

Bag-making seal conditions: (1 kg / cm ² for 1 ^second ).

  From the results of Table 2, it can be seen that 130 ° C. to 140 ° C. is appropriate for the sealing condition of the steam passage seal (P). This is because the seal strength is insufficient at 120 ° C and the retort is inferior, and the seal may peel off due to the retort. At 150 ° C, the seal strength becomes too strong and is automatically passed by the internal pressure of the pouch. This is because the steam release mechanism that steams does not work well.

  In addition, for the side seal (C) and the side seal (D), a range of 140 ° C. to 160 ° C. is appropriate, and for the bottom seal (E), a range of 140 ° C. to 160 ° C. is appropriate. I know that there is.

  The steam venting mechanism that automatically vaporizes requires the stress to concentrate on the weak part, which is the V-shaped part of the steam venting seal, especially when the pouch inflates due to the internal pressure of the steam generated. is there. For that purpose, as a result of examining important parameters, we found that the pouch length (1) and the pouch mouth length (6) are important. The material configuration of the pouch at this time and the dimensions of each part are as follows. Refer to FIG.

Material composition: Polyethylene terephthalate film (thickness 12 μm) + inorganic compound vapor deposition layer / dry lamination / sealant layer (CMPS (registered trademark) 013C manufactured by Mitsui Chemicals, Inc.)
Dimensions of each part: See FIG.
(1) Pouch length: variable (140 mm, 150 mm, 160 mm, 170 mm, 180 mm)
(2) Pouch width: 140mm
(3) Bottom 2 length: 20 mm
(4) Bottom 1 length: 40 mm
(5) Fin-shaped gusset length: 15 mm
(6) Pouch mouth length: 50mm
The examination results are shown in Table 3.

Test method: Filled with 190 g of meat potato as the contents, sealed, and confirmed whether the steam venting mechanism worked and automatically steamed.

  From the results of evaluation of the vapor permeability shown in Table 3, it can be seen that when the pouch mouth length (6) is 50 mm, the difference from the pouch length (1) is suitably 120 mm or less.

  FIG. 4 is a schematic perspective view of another embodiment of the microwave oven pouch according to the present invention. The reseal function is provided in the fin-shaped gusset folded end width direction provided at the top of the bag by providing a reseal function, a heat-resistant sterilizer, and a chuck portion (H) having steam permeability during cooking. It is also possible for consumers to add food and heat and cook at home.

  When the microwave oven pouch according to the present invention has a resealing function by providing a chuck, it can also be used as a product without using the contents, and can be used as a microwave cooking pouch. You can also.

  Hereinafter, the present invention will be described more specifically with reference to Examples and FIGS. However, the present invention is not limited to the examples.

<Example>
A microwave oven pouch according to the present invention was prepared.
Material composition: polyethylene terephthalate film (thickness 12 μm) + inorganic compound vapor deposition layer / polyamide film / sealant layer (CMPS (registered trademark) 013C manufactured by Mitsui Chemicals, Inc.)
Dimensions of each part:
Refer to FIG. 5 for the symbols of each part.
(1) Pouch length: 160mm
(2) Pouch width: 140mm
(3) Bottom 2 length: 20 mm
(4) Bottom 1 length: 40 mm
(5) Fin-shaped gusset length: 15 mm
(6) Pouch mouth length: 50 mm.

<Comparative Example 1>
A general gusseted pouch that can be heated in a microwave oven was prepared.
Material composition: polyethylene terephthalate film (thickness 12 μm) + inorganic compound vapor deposition layer / polyamide film / sealant layer (CMPS (registered trademark) 013C manufactured by Mitsui Chemicals, Inc.)
Dimensions of each part: See FIG.
(1) Pouch length: 160mm
(2) Pouch width: 140mm
(4) Bottom length: 40mm
(5) Fin-shaped gusset length: 40 mm
(6) Pouch mouth length: 40 mm.

<Comparative Example 2>
A standing pouch capable of heating in a self-supporting microwave oven was created.
Material composition: polyethylene terephthalate film (thickness 12 μm) + inorganic compound vapor deposition layer / polyamide film / sealant layer (CMPS (registered trademark) 013C manufactured by Mitsui Chemicals, Inc.)
Dimensions of each part: See FIG.
(1) Pouch length: 160mm
(2) Pouch width: 140mm
(4) Bottom length: 40 mm.

<Evaluation items and evaluation methods>
Packaging material consumption: area unit cm ²
Water filling amount: Unit cc
Packaging material efficiency: Water filling amount / packaging material usage (the larger the number, the better the efficiency)
Drop strength: 200 g of water is sealed and dropped 5 times from a height of 1.2 m.
Steamed portion: Filled with 190 g of meat potato and heated in a microwave oven (500 W) for 2 minutes.
The evaluation results are as shown in Table 4.

  According to the results shown in Table 4, the examples according to the present invention are superior in packaging efficiency compared to Comparative Examples 1 and 2. While the packaging efficiency is 0.75 in the example, the comparative example 1 is 0.7 and the comparative example 2 is 0.6, and the microwave pouch according to the present invention is clearly superior in packaging efficiency. It can be said that.

In the microwave oven pouch according to the present invention, it was confirmed that in the heating and cooking by the microwave oven, the steam release mechanism functions and the steam is automatically passed from a predetermined steaming section.

  The drop strength comparisons showed no abnormalities, and it was verified that the microwave oven pouch according to the present invention did not impair the conventional strength as a packaging material.

  As described above, according to the present invention, heating and cooking by a microwave oven are possible, an automatic steaming function is provided, packaging efficiency is excellent, and food can be cooked by adding or newly enclosing ingredients on the consumer side. It was verified that it was possible to provide a multipurpose microwave pouch.

A ... Filling port B ... Bottom C ... Side seal part D ... Side seal part E ... Bottom seal F ... Steam release mechanism G ... Punch hole processing H ... Chuck part J ... Pattern surface K ... Bottom 1
L ... Bottom 2
M ... Fin-shaped gusset N ... Pattern back P ... Steaming part seal Q ... Fin-shaped gusset edge R ... Notch 1 ... Pouch length 2 ... Pouch width 3 ...・ Bottom 2 length 4 ... Bottom 1 length 5 ... Folded gusset folding length 6 ... Pouch mouth length 7 ... Vapor passage V-shape height 8 ... Vapor passage seal Width 9 ... Ventilation part width 10 ... Microwave oven pouch

Claims (3)

At least, the outer surface side is composed of a base film and the inner surface side is composed of a laminated film composed of a sealant layer, and both end portions of the body portion are sealed,
A filling port is formed at the top,
The bottom is formed with a gusset fold fold formed by folding the film into a V shape with a fold line inside,
The bottom is a standing pouch-type packaging bag that can be heated by a microwave oven that is sealed in a standing manner,
A fin-like gusset fold formed by folding the laminated film into a V shape with the sealant inside is provided in parallel with the filling port of the bag body at a predetermined position on one side of the side film of the body portion, This gusset fold is provided with a steam release mechanism,
The folding portion at the bottom is divided by the fold line into a surface on the side with the steam release mechanism and a surface on the other side, and a bottom gusset folding width on the surface on the side with the steam release mechanism; The pouch for microwave ovens is characterized in that the latter is long with the bottom gusset folding width on the other side surface.   The pouch for a microwave oven according to claim 1, wherein the laminated film continuous in the flow direction is made into a bag by a sealing process, and is configured as one piece.   The pouch for a microwave oven according to claim 1 or 2, wherein the laminated film includes a gas barrier film formed by depositing an inorganic compound on a plastic film.