Pouch and cooking instructions

Abstract

To provide a pouch that can be cooked.SOLUTION: A self-standing pouch includes a first inner surface, a first film including a first outer surface, a second inner surface facing the first inner surface, a second film including a second outer surface, a third inner surface, and a third outer surface, and a third film located at the bottom of the pouch, a side seal part that is located on the side of the pouch and joins the first inner surface and the second inner surface, a first upper end connected to a side seal part, also a first lower seal part that joins the first inner surface and the third inner surface, a second upper end connected to the side seal part, and a second lower seal part that joins the second inner surface and the third inner surface. The first lower seal part includes a first inclined inner edge that is displaced inward as it goes downward from the first upper end. The second lower seal part includes a second inclined inner edge that is displaced inward as it goes downward from the second upper end. The first inner surface and the second inner surface are not joined at the lower part of the pouch.SELECTED DRAWING: Figure 1A

Description

Technical Field

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[0001] The present invention relates to a pouch and a cooking method using the pouch.

Background Art

[0002] Cooking foods heated by a microwave oven are on the market. For example, frozen foods and retort foods are known. Patent Document 1 proposes a method for producing frozen omelets.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, food additives are used to achieve a freshly made texture.

[0005] An object of the present invention is to provide a pouch for cooking using a microwave oven. [[ID=I40]]

Means for Solving the Problems

[0006] The present invention is a self-supporting pouch, a first film including a first inner surface and a first outer surface, a second film including a second inner surface facing the first inner surface and a second outer surface, a third film including a third inner surface including a portion facing the first inner surface and a portion facing the second inner surface, and a third outer surface, and located at the lower part of the pouch, a side seal portion located on the side portion of the pouch and joining the first inner surface and the second inner surface, a first lower seal portion including a first upper end connected to the side seal portion and joining the first inner surface and the third inner surface, It includes a second upper end connected to the side seal portion and a second lower seal portion that joins the second inner surface and the third inner surface, The first lower seal portion comprises a first inner edge including a first inclined inner edge that displaces inward as it extends downward from the first upper end, and a first outer edge. The second lower seal portion comprises a second inner edge including a second inclined inner edge that is displaced inward as it extends downward from the second upper end, and a second outer edge. The pouch is such that the first inner surface and the second inner surface are not joined at the lower part of the pouch.

[0007] In the pouch according to the present invention, the first inclined inner edge and the second inclined inner edge may extend in a straight line.

[0008] In the pouch according to the present invention, the first inclined inner edge and the second inclined inner edge may extend in a curved shape.

[0009] In the pouch according to the present invention, the first inner edge includes a first horizontal inner edge extending horizontally between the lower ends of the two first inclined inner edges, The second inner edge may include a second horizontal inner edge extending horizontally between the lower ends of the two second inclined inner edges.

[0010] In the pouch according to the present invention, the distance between the lower ends of the two first inclined inner edges may be 50 mm or more.

[0011] In the pouch according to the present invention, the lower ends of the two first inclined inner edges are connected to each other. The lower ends of the two second inclined inner edges may be connected to each other.

[0012] The pouch according to the present invention may include tapes attached to the first inner surface and the second inner surface.

[0013] In the pouch according to the present invention, the first inclined inner edge and the second inclined inner edge may have a height of 25 mm or more.

[0014] In the pouch according to the present invention, the first inclined inner edge and the second inclined inner edge may have a height of 45 mm or less.

[0015] In the pouch according to the present invention, the first film, the second film, and the third film may have a thickness of 75 μm or more.

[0016] In the pouch according to the present invention, the first film, the second film, and the third film may have a thickness of 130 μm or less.

[0017] The pouch according to the present invention includes a first content accommodated inside the pouch. The first content may include frozen food or powder.

[0018] In the pouch according to the present invention, the first content may include frozen rice.

[0019] The present invention includes a preparation step of preparing the pouch described above, a charging step of charging a second content into the pouch, and a heating step of heating the pouch containing the first content and the second content in a microwave oven, and is a cooking method.

Advantages of the Invention

[0020] According to the present invention, cooking can be performed using the pouch.

Brief Description of the Drawings

[0021] [Figure 1A] It is a front view of a pouch according to an embodiment. [Figure 1B] It is a rear view of a pouch according to an embodiment. [Figure 2] It is a perspective view showing an example of a film constituting the pouch. [Figure 3] It is a perspective view showing an example of a film constituting the pouch. [Figure 4] This is a cross-sectional view showing an example of the film's layer structure. [Figure 5] This is a cross-sectional view showing an example of the film's layer structure. [Figure 6] This is a diagram illustrating the manufacturing method of pouches. [Figure 7] This is a diagram illustrating the manufacturing method of pouches. [Figure 8] This is a front view showing the pouch containing the first contents. [Figure 9] This is a perspective view showing the pouch containing the first contents. [Figure 10] This is a front view showing the pouch in an opened state. [Figure 11] This is a perspective view showing the pouch after it has been opened. [Figure 12] This is a side view showing the pouch in an opened state. [Figure 13] This is a plan view showing omurice cooked using a pouch. [Figure 14] This is a perspective view showing omurice prepared using a pouch. [Figure 15] This is a front view showing one variation of the pouch. [Figure 16] This is a perspective view showing the pouch after it has been opened. [Figure 17A] This is a front view showing one variation of the pouch. [Figure 17B] This is a front view showing one variation of the pouch. [Figure 18] This is a plan view showing omurice cooked using the pouch shown in Figure 17A. [Figure 19] This is a front view showing one variation of the pouch. [Figure 20] This is a front view showing one variation of the pouch. [Figure 21] This figure shows the pouch according to Example 1. [Figure 22] This figure shows the pouch in Figure 21 after it has been opened. [Figure 23]This figure shows the pouch in Figure 21 in a heated state. [Figure 24] This figure shows the pouch in Figure 21 in a heated state. [Figure 25] This figure shows the pouch composition and cooking results in Examples 1 to 7. [Modes for carrying out the invention]

[0022] An embodiment of the present invention will be described with reference to Figures 1 to 14. Note that, for the sake of illustration and ease of understanding, the scale and aspect ratios of the drawings attached to this specification have been appropriately modified and exaggerated from those of the actual objects.

[0023] Furthermore, terms used in this specification to specify shapes, geometric conditions, and their degrees, such as "parallel," "orthogonal," and "identical," as well as values ​​for lengths and angles, shall not be strictly interpreted, but shall be interpreted to include a range that allows for the expectation of similar functionality.

[0024] In this specification, if multiple candidate upper limits and multiple candidate lower limits are given for a certain parameter, the numerical range of that parameter may be constructed by combining any one candidate upper limit and any one candidate lower limit. For example, consider the case where it is stated that "Parameter B is, for example, A1 or greater, and may be A2 or greater, and may be A3 or greater. Parameter B is, for example, A4 or less, and may be A5 or less, and may be A6 or less." In this case, the numerical range of parameter B may be A1 or greater and A4 or less, A1 or greater and A5 or less, A1 or greater and A6 or less, A2 or greater and A4 or less, A2 or greater and A5 or less, A2 or greater and A6 or less, A3 or greater and A4 or less, A3 or greater and A5 or less, and A3 or greater and A6 or less.

[0025] The pouch according to this embodiment is a self-standing pouch. The pouch is configured to provide cooked food by heating the contents contained in the pouch in a microwave oven. The contents include a first content and a second content that is added to the pouch after the first content. In this embodiment, the first content is frozen chicken rice, the second content is beaten egg, and the cooked food is omurice (omelet rice).

[0026] The first contents may be pre-filled in the pouch before it is distributed in the market. Alternatively, the user of the pouch may put the first contents into the pouch. The second contents are put into the pouch by the user. Cooked food is obtained by heating the first and second contents contained in the pouch in a microwave oven. It is preferable that the pouch is configured to facilitate the user in putting the second contents into the pouch. It is also preferable that the pouch does not tip over in the microwave oven. The configuration of the pouch will be described below.

[0027] (pouch) Figure 1A is a front view showing the pouch 10 as seen from the front side. Figure 1B is a rear view showing the pouch 10 as seen from the back side. Figures 1A and 1B show the pouch 10 before it is filled with contents, i.e., when it does not contain any contents. In this embodiment, the concept of a pouch includes not only pouches that do not contain contents, but also pouches that contain contents.

[0028] The pouch 10 comprises an upper section 11, a lower section 12, and a pair of side sections 13. The pair of side sections 13 face each other in the width direction D2 of the pouch 10. Names such as "upper section," "lower section," and "side sections," as well as terms such as "upper" and "downward," describe the relative position and orientation of the pouch 10 and its components with respect to the pouch 10 in an upright position. The orientation of the pouch 10 during manufacturing and transportation is not limited by the names and terms used herein.

[0029] The pouch 10 comprises a first film 15, a second film 16, and a third film 17. The first film 15 constitutes the surface of the pouch 10. The second film 16 constitutes the back surface of the pouch 10. The third film 17 is located at the bottom 12 of the pouch 10. In the state shown in Figures 1A and 1B, the third film 17 is folded back at the fold line 17f and positioned between the first film 15 and the second film 16.

[0030] Figure 2 shows an example of a film that makes up pouch 10. In Figure 2, the film is shown before it is cut along the contour of pouch 10. The first film 15 includes a first inner surface 15x and a first outer surface 15y located opposite the first inner surface 15x. The second film 16 includes a second inner surface 16x facing the first inner surface 15x and a second outer surface 16y located opposite the second inner surface 16x. The third film 17 includes a third inner surface 17x and a third outer surface 17y located opposite the third inner surface 17x. The third inner surface 17x includes a portion facing the first inner surface 15x and a portion facing the second inner surface 16x.

[0031] The terms "first film," "second film," and "third film" described above are based on the positional relationship of the outer surface of the pouch 10. The method of providing the films when manufacturing the pouch 10 is not limited by the above terminology. For example, as shown in Figure 2, the pouch 10 may be manufactured from a total of three films: one first film 15, one second film 16, and one third film 17. Alternatively, as shown in Figure 3, the pouch 10 may be manufactured from a single film including regions corresponding to the first film 15, the second film 16, and the third film 17. Although not shown, the pouch 10 may also be manufactured from a total of two films: one film including regions corresponding to the first film 15 and the third film 17, and one second film 16.

[0032] Pouch 10 is constructed by joining the inner surfaces of films together. In the following description, the portion where the inner surfaces of the films are joined together will be referred to as the sealed portion. The portion where the films overlap but the inner surfaces are not joined together will also be referred to as the non-sealed portion. The sealed portion may be formed by welding the inner surfaces of the films together. Alternatively, the sealed portion may be formed by bonding the inner surfaces of the films together using an adhesive or the like.

[0033] As shown in Figures 1A and 1B, the sealing portion includes a side sealing portion 20 located on the side 13 of the pouch 10. The side sealing portion 20 joins the first inner surface 15x of the first film 15 and the second inner surface 16x of the second film 16.

[0034] As shown in Figures 1A and 1B, the pouch 10 may include an opening portion 23. The opening portion 23 is a part that is to be torn by the user when opening the pouch 10. An opening is formed in the pouch 10 when the pouch 10 is opened along the width direction D2 based on the opening portion 23.

[0035] The opening section 23 may include a notch formed in the side seal section 20. The notch may be, for example, a cutout. The notch may also be a slit. In place of the notch, or in addition to the notch, the opening section 23 may include a group of scratches, a half-cut line, etc., formed in the side seal section 20. The opening section 23 may include printing to indicate to the user the position where it should be opened.

[0036] The top 11 of the pouch 10 may be open. In the manufacturing process of the pouch 10, the contents are filled into the storage section 15 using the top 11 as the filling opening, and then the storage section 15 is sealed by forming an upper seal along the top 11. In Figures 1A and 1B, the inner edge of the portion that will later become the upper seal is shown by a dashed line. In the following description, the portion that will later become the upper seal will also be referred to as the upper seal portion 26.

[0037] As shown in Figure 1A, the seal portion includes a first lower seal portion 30 located at the lower part 12 of the pouch 10 on the surface side of the pouch 10. The first lower seal portion 30 includes two first upper ends 30a, each connected to two side seal portions 20. The first lower seal portion 30 joins the first inner surface 15x of the first film 15 and the third inner surface 17x of the third film 17.

[0038] As shown in Figure 1B, the sealing portion includes a second lower sealing portion 40 located at the bottom 12 of the pouch 10 on the back side of the pouch 10. The second lower sealing portion 40 includes two second upper ends 40a, each connected to the two side sealing portions 20. The second lower sealing portion 40 joins the second inner surface 16x of the second film 16 and the third inner surface 17x of the third film 17.

[0039] The lower section 12 includes a first lower section 12a and a second lower section 12b. The first lower section 12a includes a first film 15 and a third film 17 joined by the first lower sealing section 30 described above. The second lower section 12b includes a second film 16 and a third film 17 joined by the second lower sealing section 40 described above. The first lower section 12a and the second lower section 12b are separated by a fold 17f of the third film 17.

[0040] In this embodiment, the pouch 10 is constructed such that the first lower section 12a and the second lower section 12b can deform more freely than conventional stand-up pouches. For example, the first inner surface 15x of the first film 15 and the second inner surface 16x of the second film 16 are not joined at the lower section 12. In this case, when the fold 17f is pressed down by the weight of the contents, the gap between the lower end of the first lower section 12a and the lower end of the second lower section 12b in the horizontal direction widens. This increases the stability of the pouch 10 when it is standing upright on a surface. The fold 17f may be pressed down until the third outer surface 17y of the third film 17 touches the surface. This further widens the gap between the lower end of the first lower section 12a and the lower end of the second lower section 12b, increasing the stability of the pouch 10. The fold 17f may be in contact with the surface. The surface can be a kitchen counter, a microwave oven's flat table, etc.

[0041] Although not shown in the diagram, the first inner surface 15x of the first film 15 of the first lower part 12a and the second inner surface 16x of the second film 16 of the second lower part 12b may be joined together to the extent that the self-supporting nature of the pouch 10 is ensured. For example, the first inner surface 15x and the second inner surface 16x may be joined at the base of the first lower part 12a and the base of the second lower part 12b. The base of the first lower section 12a is the portion of the first lower section 12a that is close to the fold line 17f in the state shown in Figure 1A. The height of the base in the vertical direction D1 is, for example, 1 / 3 or less of the height of the first lower section 12a in the vertical direction D1, and may be 1 / 4 or less, or 1 / 5 or less. The base of the second lower section 12b is the portion of the second lower section 12b that is close to the fold line 17f in the state shown in Figure 1B. The height of the base in the vertical direction D1 is, for example, 1 / 3 or less of the height of the second lower section 12b in the vertical direction D1, and may be 1 / 4 or less, or 1 / 5 or less.

[0042] The first lower seal portion 30 will now be described in detail. As shown in Figure 1A, the first lower seal portion 30 includes a first inner edge 31 and a first outer edge 36. The first inner edge 31 is in contact with the non-seal portion for containing the contents. The first outer edge 36 is located on the opposite side of the first inner edge 31.

[0043] As shown in Figure 1A, the first inner edge 31 includes two first inclined inner edges 32 that are displaced inward as they extend downward from the first upper end 30a. "Inward" refers to the side that approaches the center of the pouch 10 in the width direction D2. The first inclined inner edges 32 help to suppress the creation of dead space in the first lower part 12a compared to the case where the first inner edge 31 extends in the vertical direction. Dead space is a space in which the gap between the inner surfaces of opposing films does not easily widen. It is not easy to remove contents that have fallen into dead space. By suppressing the creation of dead space, it is possible to suppress the creation of wasted contents. The first inclined inner edges 32 may extend in a straight line.

[0044] In Figure 1A, the symbol H3 represents the height of the first inclined inner edge 32 in the vertical direction D1. The height H3 is, for example, 25 mm or more, and may be 30 mm or more. A height H3 of 25 mm or more ensures sufficient volume in the lower part 12 for storing cooked food.

[0045] The height H3 is, for example, 45 mm or less, and may also be 40 mm or less. As shown in the embodiments described later, by setting the height H3 to 45 mm or less, it is possible to suppress the narrowing of the opening of the pouch 10 after opening.

[0046] In Figure 1A, the symbol W3 represents the dimension of the first inclined inner edge 32 in the width direction D2. W3 / H3 represents the degree of inclination of the first inclined inner edge 32. W3 / H3 is, for example, 0.2 or more, may be 0.3 or more, or may be 0.4 or more. W3 / H3 is, for example, 2.5 or less, may be 2.0 or less, or may be 1.5 or less.

[0047] In Figure 1A, the symbol H2 represents the vertical distance from the first upper end 30a of the first lower seal portion 30 to the opening portion 23. If the ratio of height H3 to distance H2 becomes too large, it becomes difficult to remove the cooked food from the pouch 10. Considering this point, H2 / H3 is, for example, 3.0 or less, and may also be 2.8 or less. On the other hand, if the ratio of height H3 to distance H2 becomes too small, unintended leakage of the contents from the opening of the pouch 10 after opening becomes more likely. Considering this point, H2 / H3 is, for example, 2.0 or more, and may also be 2.2 or more.

[0048] As shown in Figure 1A, the first inner edge 31 may include a first horizontal inner edge 33 extending horizontally between the lower ends 32a of the two first inclined inner edges 32. In other words, the first lower seal portion 30 may include a portion extending horizontally along the lower end of the first lower portion 12a. The first horizontal inner edge 33 can enhance the stability of the pouch 10 when it is standing upright on the mounting surface.

[0049] In Figure 1A, the symbol W2 represents the distance between the lower ends 32a of the two first inclined inner edges 32. The distance W2 is, for example, 50 mm or more, may be 60 mm or more, or 70 mm or more. The distance W2 is, for example, 100 mm or less, may be 90 mm or less, or 80 mm or less.

[0050] As shown in Figure 1A, the first outer edge 36 may include two first inclined outer edges 37 that are displaced inward as they extend downward from the first upper end 30a. The first inclined outer edges 37 may extend parallel to the first inclined inner edge 32.

[0051] As shown in Figure 1A, the first outer edge 36 may include a first horizontal outer edge 38 that extends horizontally between the lower ends of the two first inclined outer edges 37. The first horizontal outer edge 38 may extend parallel to the first horizontal inner edge 33.

[0052] Next, the second lower seal portion 40 will be described in detail. As shown in Figure 1B, the second lower seal portion 40 includes a second inner edge 41 and a second outer edge 46. The second inner edge 41 is in contact with the non-seal portion for containing the contents. The second outer edge 46 is located on the opposite side of the second inner edge 41.

[0053] As shown in Figure 1B, the second inner edge 41 includes two second inclined inner edges 42 that are displaced inward as they extend downward from the second upper end 40a. Similar to the first inclined inner edge 32, the second inclined inner edges 42 help to suppress the creation of dead space in the second lower part 12b compared to the case where the second inner edge 41 extends in the vertical direction. The second inclined inner edges 42 may extend in a straight line.

[0054] The height of the second inclined inner edge 42 in the vertical direction D1 is within the range described above with respect to the height H3 of the first inclined inner edge 32. The dimensions of the second inclined inner edge 42 in the width direction D2 are within the range described above with respect to the dimensions W3 of the first inclined inner edge 32.

[0055] As shown in Figure 1B, the second inner edge 41 may include a second horizontal inner edge 43 that extends horizontally between the lower ends 42a of the two second horizontal inner edges 43. In other words, the second lower seal portion 40 may include a portion that extends horizontally along the lower end of the second lower portion 12b. The second horizontal inner edge 43 can enhance the stability of the pouch 10 when it is standing upright on the mounting surface.

[0056] The distance between the lower ends 42a of the two second inclined inner edges 42 is within the range described above with respect to the distance W2.

[0057] As shown in Figure 1B, the second outer edge 46 may include two second inclined outer edges 47 that are displaced inward as they extend downward from the second upper end 40a. The second inclined outer edges 47 may extend parallel to the second inclined inner edge 42.

[0058] As shown in Figure 1B, the second outer edge 46 may include a second horizontal outer edge 48 extending horizontally between the lower ends of the two second inclined outer edges 47. The second horizontal outer edge 48 may extend parallel to the second horizontal inner edge 43.

[0059] (film) Next, the layer configurations of the first film 15, the second film 16, and the third film 17 will be described.

[0060] As shown in Figure 4, the first film 15, the second film 16, and the third film 17 may each include a first base layer 51 and a sealant layer 52 located on the inner surface side of the first base layer 51. The first base layer 51 may constitute the outer surfaces 15y, 16y, and 17y of each film 15, 16, and 17. The sealant layer 52 may constitute the inner surfaces 15x, 16x, and 17x of each film 15, 16, and 17.

[0061] As shown in Figure 4, the first film 15, the second film 16, and the third film 17 may include a first adhesive layer 53 located on the inner surface of the first substrate layer 51. In the example shown in Figure 4, the first adhesive layer 53 adheres the first substrate layer 51 to the sealant layer 52. The first adhesive layer 53 is formed, for example, by a dry lamination method.

[0062] As shown in Figure 5, the first film 15, the second film 16, and the third film 17 may include a first base layer 51, a second base layer 54 located on the inner side of the first base layer 51, and a sealant layer 52 located on the inner side of the second base layer 54. By including two base layers in the films 15, 16, and 17, the rigidity of the films 15, 16, and 17 can be increased.

[0063] As shown in Figure 5, the first film 15, the second film 16, and the third film 17 may include a first adhesive layer 53 located on the inner surface of the first substrate layer 51 and a second adhesive layer 55 located on the inner surface of the second substrate layer 54. In the example shown in Figure 5, the first adhesive layer 53 adheres the first substrate layer 51 and the second substrate layer 54, and the second adhesive layer 55 adheres the second substrate layer 54 and the sealant layer 52. The first adhesive layer 53 and the second adhesive layer 55 are formed, for example, by a dry lamination method.

[0064] The materials constituting the first base layer 51 and the second base layer 54 can be polyester films such as polyethylene terephthalate and polybutylene terephthalate, polyamide films such as nylon, and plastic films such as polypropylene films. The plastic films of the first base layer 51 and the second base layer 54 may be biaxially oriented.

[0065] The thickness of the first substrate layer 51 and the second substrate layer 54 is, for example, 8 μm or more, and may be 10 μm or more. The thickness of the first substrate layer 51 and the second substrate layer 54 is, for example, 30 μm or less, and may be 25 μm or less.

[0066] The plastic films of the first base layer 51 and the second base layer 54 may be provided with a vapor-deposited layer of a metal oxide such as aluminum oxide or an inorganic oxide such as silicon oxide.

[0067] Polyolefin resins such as polyethylene, polypropylene, and ethylene copolymers can be used as the material for the sealant layer 52. Examples of polyethylene include low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE). The sealant layer 52 may also be composed of a material in which LDPE is mixed with LLDPE. Examples of ethylene copolymers include ethylene-vinyl acetate copolymer, ethylene-propylene block copolymer, and ethylene-methacrylic acid copolymer (EMMA). The sealant layer 52 may also contain an unstretched sealant film.

[0068] The thickness of the sealant layer 52 is, for example, 50 μm or more, and may be 60 μm or more. The thickness of the sealant layer 52 is, for example, 100 μm or less, and may be 80 μm or less.

[0069] The thickness of the first adhesive layer 53 and the second adhesive layer 55 is, for example, 5 μm or less, and may be 4 μm or less. The thickness of the first adhesive layer 53 and the second adhesive layer 55 is, for example, 1 μm or more, and may be 2 μm or more.

[0070] The thickness of the first film 15, the second film 16, and the third film 17 is, for example, 75 μm or more, but may be 80 μm or more, or 90 μm or more. This suppresses deformation of the front and back surfaces of the pouch 10 due to the weight of the contents. The thickness of the first film 15, the second film 16, and the third film 17 is, for example, 130 μm or less, but may be 120 μm or less, or 100 μm or less. This allows the outer shape of the cooked food to have a natural roundness.

[0071] The first film 15, the second film 16, and the third film 17 may include a printing layer. The printing layer is a layer that forms any desired printed pattern such as letters, numbers, pictures, figures, symbols, and designs for decoration, indication of contents, indication of expiration date, indication of manufacturer, seller, etc., and for adding aesthetic appeal. The printing layer is formed by printing ink containing a binder and pigment.

[0072] Specific examples of the layer configurations of the first film 15, the second film 16, and the third film 17 are shown below. Examples 1 and 2 are examples of the layer configurations shown in Figure 4. Examples 3-7 are examples of the layer configurations shown in Figure 5. Example 1: IB-ON15 / Mark 1 / Connection 3 / LLDPE60 Example 2: IB-PET12 / Mark 1 / Connection 3 / LLDPE80 Example 3: IB-PET12 / mark 1 / contact 3 / ON15 / contact 3 / LLDPE50 Example 4: ON15 / mark 1 / contact 3 / IB-PET12 / contact 3 / LLDPE80 Example 5: IB-PET12 / mark 1 / contact 3 / ON15 / contact 3 / CPP50 Example 6: PET12 / mark 1 / contact 3 / IB-PET12 / contact 3 / CPP60 Example 7: ON15 / mark 1 / contact 3 / IB-PET12 / contact 3 / LLDPE100 "PET" means biaxially oriented polyethylene terephthalate film (hereinafter also referred to as PET film). "ON" means biaxially oriented nylon film. The designation "IB-" attached to plastic films such as PET or ON means that a transparent vapor-deposited layer, such as silicon dioxide, is provided on the plastic film. "Mark" means printed layer. "Adhesive" means adhesive layer. LLDPE means linear low-density polyethylene film. CPP means unoriented polypropylene film. The numbers indicate the thickness of the layer. The unit of thickness is μm.

[0073] The layer configuration of the third film 17 may be the same as or different from the layer configuration of the first film 15 and the second film 16.

[0074] (Pouch manufacturing method) Next, the manufacturing method of the pouch 10 will be described. First, as shown in Figure 2, the first inner surface 15x of the first film 15 and the second inner surface 16x of the second film 16 are placed opposite each other. Also, the third film 17, folded at the fold line 17f, is inserted between the first film 15 and the second film 16. The third film 17 may be a continuous film with the first film 15 or the second film 16, as shown in Figure 3. The first film 15, the second film 16, and the third film 17 may be long rolls of raw material extending in the width direction D2 as shown in Figures 1A and 1B.

[0075] Next, the first film 15, the second film 16, and the third film 17 are heat-sealed in the areas corresponding to the first lower seal portion 30 and the second lower seal portion 40. As a result, as shown in Figure 6, the first lower seal portion 30 is formed between the first inner surface 15x of the first film 15 and the third inner surface 17x of the third film 17. Although not shown, the second lower seal portion 40 is also formed between the second inner surface 16x of the second film 16 and the third inner surface 17x of the third film 17.

[0076] Furthermore, the first film 15 and the second film 16 are heat-sealed in the region corresponding to the side seal portion 20. As a result, as shown in Figure 7, the side seal portion 20 is formed between the first inner surface 15x of the first film 15 and the second inner surface 16x of the second film 16.

[0077] The heat sealing process shown in Figure 6 and the heat sealing process shown in Figure 7 may be performed simultaneously or at different times.

[0078] Next, the first film 15, the second film 16, and the third film 17 are cut along the contour of the pouch 10. This yields the pouch 10 shown in Figure 1A.

[0079] Next, the first contents are filled into the pouch 10 from the top 11. Then, the first film 15 and the second film 16 are heat-sealed at the upper sealing portion 26. This forms an upper sealing portion 25 on the top 11. In this way, as shown in Figures 8 and 9, a pouch 10 containing and sealed with the first contents 61 can be obtained. Figures 8 and 9 are a front view and a perspective view, respectively, showing the pouch containing the first contents 61. In Figure 8, the reference numeral H11 represents the height of the first contents 61 contained in the pouch 10.

[0080] In this embodiment, as described above, the first inner surface 15x of the first film 15 and the second inner surface 16x of the second film 16 are not joined at the lower part 12. In this case, when the fold 17f is pressed down by the weight of the first contents 61, the gap between the first lower part 12a and the second lower part 12b in the horizontal direction widens. As a result, as shown in Figure 9, a gap in the depth direction D3 can be formed between the lower end of the first lower part 12a and the lower end of the second lower part 12b at the end of the pouch 10 in the width direction D2. This increases the stability of the pouch 10 when it is standing upright on the mounting surface. The depth direction D3 is a direction perpendicular to the vertical direction D1 and the width direction D2. Although not shown, in the pouch 10 with the first contents 61 contained and sealed, the fold 17f may be pressed down until the third outer surface 17y of the third film 17 touches the mounting surface.

[0081] (Cooking method) Next, we will explain how to cook using pouch 10.

[0082] First, prepare a pouch 10 containing and sealed with the first contents 61. The first contents 61 may be, for example, frozen chicken rice.

[0083] Next, a thawing step may be performed to thaw the first contents 61. For example, the pouch 10 may be heated using a microwave oven. The thawing step may be performed before opening the pouch 10 along the opening section 23. Alternatively, the thawing step may be performed after opening the pouch 10 along the opening section 23.

[0084] Next, a filling process is carried out in which the second contents 62 are placed inside the pouch 10. First, the pouch 10, which has been opened along the opening section 23, is placed on a surface such as a kitchen counter. Figures 10, 11, and 12 are a front view, perspective view, and side view of the opened pouch 10. In the opened pouch 10, the fold 17f is more easily pressed down than in the pouch 10 before opening. In the examples shown in Figures 10, 11, and 12, the fold 17f is pressed down until the third outer surface 17y of the third film 17 touches the surface. The fold 17f may be in contact with the surface. In Figure 10, the reference numeral H12 represents the height of the first contents 61 contained in the pouch 10. The height H12 is smaller than the height H11 in the pouch 10 before opening. When the thawing process described above is carried out, the gaps between the rice grains in the chicken rice decrease due to thawing, so the height H12 becomes smaller.

[0085] When the pouch 10 is opened along the opening section 23, an opening 23a is formed in the portion of the opening section 23. The user puts the second contents 62 into the pouch 10 through the opening 23a. The second contents 62 is, for example, beaten egg. It is preferable that the beaten egg moves around the chicken rice mass inside the pouch 10 so that it spreads out.

[0086] In Figure 11, the reference numeral M1 represents the dimension of the opening 23a in the depth direction D3. The dimension M1 is preferably 30 mm or more, and more preferably 50 mm or more. This allows the user to easily put the second contents 62 into the pouch 10.

[0087] Dimension M1 may be less than 30 mm. In this case, the user may put the second contents 62 into the pouch 10 while supporting the opening 23a to widen it. For example, the user may widen the opening 23a with their left hand while putting the second contents 62 into the pouch 10 with their right hand.

[0088] Next, a heating step is performed in which the pouch 10 containing the first contents 61 and the second contents 62 is heated in a microwave oven. During the heating step, the opening 23a of the pouch 10 does not need to be closed. When the second contents 62 is heated, it changes in quality. For example, if the second contents 62 is beaten egg, the beaten egg will solidify due to the heat. As a result, a layer of solidified egg is formed around the chicken rice. In other words, omurice is created inside the pouch 10.

[0089] The input step and the heating step may be repeated multiple times. For example, the input step may include a first input step and a second input step, and the heating step may include a first heating step and a second heating step. In the first input step, the first egg is placed into the pouch 10 containing the first contents 61. In the first heating step, after the first input step, the pouch 10 containing the first contents 61 and the first egg is heated in a microwave oven. In the second input step, after the first heating step, the second egg is placed into the pouch 10 containing the first contents 61 and the first egg. In the second heating step, after the second input step, the pouch 10 containing the first contents 61 and the first and second eggs is heated in a microwave oven.

[0090] Next, the process of removing the cooked food, in this case omurice, from the pouch 10 is carried out. Figures 13 and 14 are perspective and plan views, respectively, of the cooked food 71 removed onto the plate 72. If the first inclined inner edge 32 and the second inclined inner edge 42 of the pouch 10 extend in a straight line, the cooked food 71 may have a substantially hexagonal planar shape, as shown in Figure 14.

[0091] According to this embodiment, cooking can be performed by heating the first contents 61 and the second contents 62 in a microwave oven using the pouch 10. Therefore, freshly prepared cooked food 71 can be easily provided to the user. In addition, the size of the cooked food 71 can be adjusted by adjusting the amounts of the first contents 61 and the second contents 62.

[0092] At the lower part 12 of the pouch 10, the first inner surface 15x of the first film 15 and the second inner surface 16x of the second film 16 are not joined. Therefore, as shown in Figure 11, the third outer surface 17y of the third film 17 can come into contact with the mounting surface. This increases the stability of the pouch 10 in the depth direction D3. For example, it prevents the pouch 10 from tilting in the depth direction D3. This prevents the pouch 10 from tipping over during the loading and heating processes.

[0093] The first lower seal portion 30 of the pouch 10 includes two first inclined inner edges 32 that are displaced inward as they extend downward from the first upper end 30a. Similarly, the second lower seal portion 40 includes two second inclined inner edges 42 that are displaced inward as they extend downward from the second upper end 40a. This prevents dead space from forming in the first lower portion 12a and the second lower portion 12b. This prevents the first contents 61 and the second contents 62 from entering the dead space. This prevents the contents from being wasted. Furthermore, it improves the shape stability of the cooked food 71.

[0094] It is possible to make various modifications to the embodiments described above. The following descriptions of modifications will be made with reference to the drawings as needed. In the following descriptions and the drawings used therein, parts that can be configured similarly to the embodiments described above will be given the same reference numerals as those used for the corresponding parts in the embodiments described above, and redundant explanations will be omitted. Furthermore, if it is clear that the effects and advantages obtained in the embodiments described above can also be obtained in the modifications, the explanation may be omitted.

[0095] (Modified example of the lower seal) In the above-described embodiment, an example was shown in which the first inner edge 31 includes the first horizontal inner edge 33. That is, an example was shown in which the first lower seal portion 30 includes a portion that extends horizontally along the lower end of the first lower portion 12a. However, it is not limited to this, and as shown in Figure 15, the first lower seal portion 30 does not have to include a portion that extends horizontally along the lower end of the first lower portion 12a. Similarly, although not shown, the second lower seal portion 40 does not have to include a portion that extends horizontally along the lower end of the second lower portion 12b.

[0096] Figure 16 is a perspective view showing the pouch 10 of Figure 15 with the first contents 61 contained inside and the pouch 10 opened. In this modified example as well, the stability of the pouch 10, which is standing upright on the mounting surface, can be increased by the third outer surface 17y of the third film 17 being in contact with the mounting surface.

[0097] (Modified example of the lower seal) In the above-described embodiment, an example was shown in which the first inclined inner edge 32 and the second inclined inner edge 42 extend in a straight line. However, the invention is not limited to this, and as shown in Figure 17A, the first inclined inner edge 32 may extend in a curved shape. For example, the first inclined inner edge 32 may include a shape that is curved so as to be convex outward. "Outward" refers to the side away from the center of the pouch 10 in the width direction D2. Similarly, although not shown, the second inclined inner edge 42 may extend in a curved shape. For example, the second inclined inner edge 42 may include a shape that is curved so as to be convex outward.

[0098] As shown in Figure 17B, even when the first inclined inner edge 32 extends in a curved shape, the first lower seal portion 30 does not have to include a portion that extends horizontally along the lower end of the first lower portion 12a, similar to the example shown in Figure 15 above. Similarly, although not shown, the second lower seal portion 40 does not have to include a portion that extends horizontally along the lower end of the second lower portion 12b.

[0099] Figure 18 is a plan view showing a cooked food 71 obtained by the cooking method using the pouch 10 of Figure 17A or Figure 17B. According to this modified example, compared to the case where the pouch 10 of Figure 1A is used, it is easier to obtain a cooked food 71 with a curved contour. For example, the contour of the cooked food 71 in plan view tends to be elliptical.

[0100] (Modified example of the lower seal) In the above-described embodiment, an example was shown in which the lower ends 32a of the two first inclined inner edges 32 are separated. However, the invention is not limited to this, and as shown in Figure 19, the lower ends 32a of the two first inclined inner edges 32 may be connected to each other. For example, the lower ends 32a of the two first inclined inner edges 32 may be connected at the center of the pouch 10 in the width direction D2. In this case, the first inclined inner edges 32 may extend in a curved shape. For example, the first inclined inner edges 32 may include a curved shape that is convex outward. Similarly, although not shown, the lower ends 42a of the two second inclined inner edges 42 may be connected to each other.

[0101] (A variation of the pouch) The pouch 10 may include tape attached to the first inner surface 15x of the first film 15 and the second inner surface 16x of the second film 16. This increases the rigidity of the front and back surfaces of the pouch 10. As a result, the opening 23a of the pouch 10 is more likely to remain open after opening. The tape may extend in the width direction D2 from one side 13 to the other side 13.

[0102] The tape may be configured to have interlocking properties, such as a zipper tape or a shape-retaining zipper. This allows the pouch 10 to be resealed after it has been opened. In the example shown in Figure 20, the tape is a zipper tape 24 located below the opening portion 23. The zipper tape 24 extends in the width direction D2 from one side portion 13 to the other side portion 13. The zipper tape 24 includes, for example, a male member attached to the first inner surface 15x of the first film 15 and a female member attached to the second inner surface 16x of the second film 16. The pouch 10 can be sealed by interlocking the male and female members.

[0103] Although not shown in the illustration, the tape does not necessarily have to have the interlocking properties of a chuck tape. For example, the tape may be a shape-retaining tape attached to the first inner surface 15x of the first film 15 and the second inner surface 16x of the second film 16 in order to improve the shape retention of the opening 23a.

[0104] (Variations in cooking methods) In the embodiments described above, as shown in Figures 8 and 9, an example was shown in which the first contents 61 were pre-filled in a sealed pouch 10. However, the invention is not limited to this, and the user may put the first contents 61 into the pouch 10. For example, as shown in Figures 1A and 1B, an empty pouch 10 may be distributed to the market. In this case, the user who purchased the pouch 10 puts the first contents 61 and the second contents 62 into the pouch 10. Subsequently, a heating process is carried out. This makes it possible to obtain cooked food 71.

[0105] (Torture of contents) In the above-described embodiment, an example was shown in which the first contents 61 were frozen chicken rice and the second contents 62 were eggs. However, the contents cooked by the pouch 10 are not particularly limited. Table 1 shows examples of combinations of the first contents 61, the second contents 62, and the cooked food 71. [Table 1] The mixed dough is obtained by mixing the mixed flour with milk or water. The mixed flour contains wheat flour, sugar, and baking powder.

[0106] While we have described several variations of the above-mentioned embodiment, it is naturally possible to combine and apply multiple variations as appropriate. [Examples]

[0107] Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist of the invention.

[0108] [Example 1] A biaxially oriented plastic film was prepared as the first substrate layer 51, which had a silicon dioxide vapor-deposited layer. The plastic film contained nylon (ON). The thickness of the plastic film was 15 μm.

[0109] An unstretched sealant film containing linear low-density polyethylene (LLDPE) was prepared as the sealant layer 52. The thickness of the sealant film was 70 μm.

[0110] A laminated film was fabricated by laminating a plastic film and a sealant film using a dry lamination method. The thickness of the laminated film was 88 μm. The layer structure of the laminated film is as follows: IB-ON15 / Connection 3 / LLDPE70

[0111] The laminated films described above were used as the first film 15, the second film 16, and the third film 17 to produce the pouch 10 shown in Figure 1A. The pouch 10 includes a first inclined inner edge 32 and a second inclined inner edge 42 that extend in a straight line. The pouch 10 has a width W0 of 200 mm and a height H0 of 165 mm. The height H3 of the first inclined inner edge 32 was 40 mm. The distance W2 between the lower ends 32a of the two first inclined inner edges 32 was 50 mm. The vertical distance H2 from the first upper end 30a of the first lower seal portion 30 to the opening portion 23 was 120 mm.

[0112] Pouch 10 was filled with 180g of frozen chicken rice. Then, pouch 10 was sealed by forming the upper seal portion 25. The height H11 of the frozen chicken rice contained in pouch 10 was 53mm. Figure 21 is an image of pouch 10 containing the frozen chicken rice.

[0113] Next, a thawing process was carried out using a microwave oven to defrost the frozen chicken rice. Specifically, pouch 10 was heated for 1 minute and 30 seconds in a microwave oven set to 600W output. The height H12 of the defrosted frozen chicken rice was 40 mm.

[0114] Next, the input and heating processes were carried out. Specifically, the first input process was performed by adding the first beaten egg to pouch 10. Next, the first heating process was performed by heating pouch 10 for 1 minute and 40 seconds in a microwave oven set to 600W output. Next, the second input process was performed by adding the second beaten egg to pouch 10. Next, the second heating process was performed by heating pouch 10 for 1 minute and 30 seconds in a microwave oven set to 600W output. As a result, omurice was created inside pouch 10.

[0115] During the first filling process, the dimension M1 of the opening 23a was 3 mm or more. Therefore, the beaten egg could be poured into the pouch 10 without the need to provide support to widen the opening 23a. Figure 22 is an image of the pouch 10 taken from above during the first filling process. Figure 23 is an image of the pouch 10 after the beaten egg was poured in during the first filling process. Figure 24 is an image of the pouch 10 after the second heating process.

[0116] Next, the removal process was carried out to remove the omurice from pouch 10. The removed omurice had dimensions of 140 mm in length (W11), 90 mm in width (W12), and 35 mm in height (H13). In plan view, the shape of the omurice was approximately hexagonal.

[0117] [Example 2] A pouch 10, as shown in Figure 15, was fabricated using the same laminated film as in Example 1. The pouch 10 of Example 2 differs from the pouch 10 of Example 1 in that it does not have a sealing portion extending horizontally along the lower ends of the first lower section 12a and the second lower section 12b. The width W0, height H0, height H3, distance W2, and distance H2 of the pouch 10 of Example 2 were the same as in Example 1.

[0118] Similar to Example 1, 180g of frozen chicken rice was filled into pouch 10. Subsequently, the thawing, loading, and heating processes were carried out under the same conditions as in Example 1. The height H11 of the frozen chicken rice and the height H12 of the thawed frozen chicken rice were the same as in Example 1. During the first loading process, the dimension M1 of the opening 23a was 3mm or more.

[0119] Next, the removal process was carried out to remove the omurice from pouch 10. The length W11, width W12, and height H13 of the removed omurice were the same as in Example 1. In plan view, the shape of the omurice was approximately hexagonal.

[0120] [Example 3] A pouch 10, as shown in Figure 15, was fabricated using the same laminated film as in Example 1. Similar to Example 2, the pouch 10 of Example 3 does not have a sealing portion extending horizontally along the lower ends of the first lower section 12a and the second lower section 12b. The width W0 and height H0 of the pouch 10 in Example 3 were the same as in Example 2. The height H3, distance W2, and distance H2 of the pouch 10 in Example 3 were 30 mm, 90 mm, and 130 mm, respectively.

[0121] Similar to Example 1, 180g of frozen chicken rice was filled into pouch 10. Subsequently, the thawing, loading, and heating processes were carried out under the same conditions as in Example 1. The height H11 of the frozen chicken rice and the height H12 of the thawed frozen chicken rice were 63mm and 45mm, respectively. During the first loading process, the dimension M1 of the opening 23a was 3mm or more.

[0122] Next, the omurice was removed from pouch 10. The length W11, width W12, and height H13 of the removed omurice were 130 mm, 90 mm, and 40 mm, respectively. In plan view, the shape of the omurice was approximately elliptical.

[0123] [Example 4] A pouch 10, as shown in Figure 15, was fabricated using the same laminated film as in Example 1. Similar to Example 2, the pouch 10 of Example 4 does not have a sealing portion extending horizontally along the lower ends of the first lower section 12a and the second lower section 12b. The width W0 and height H0 of the pouch 10 of Example 4 were the same as in Example 2. The height H3, distance W2, and distance H2 of the pouch 10 of Example 4 were 55 mm, 90 mm, and 120 mm, respectively.

[0124] Similar to Example 1, 180g of frozen chicken rice was filled into pouch 10. Subsequently, the thawing, filling, and heating processes were carried out under the same conditions as in Example 1. The height H11 of the frozen chicken rice and the height H12 of the thawed frozen chicken rice were 45mm and 30mm, respectively. During the first filling process, the dimension M1 of the opening 23a was less than 3mm. Therefore, while widening the opening 23a with the left hand, the beaten egg was poured into the pouch 10 with the right hand.

[0125] Next, the removal process was carried out to remove the omurice from pouch 10. The length W11, width W12, and height H13 of the removed omurice were 110 mm, 105 mm, and 30 mm, respectively. In plan view, the shape of the omurice was approximately circular.

[0126] [Example 5] A pouch 10, as shown in Figure 17A, was fabricated using the same laminated film as in Example 1. Unlike Example 1, the pouch 10 of Example 5 includes a first inclined inner edge 32 and a second inclined inner edge 42 that extend in a curved shape. The pouch 10 of Example 5, like Example 1, has a sealing portion that extends horizontally along the lower ends of the first lower part 12a and the second lower part 12b. The width W0 and height H0 of the pouch 10 of Example 5 were the same as in Example 1. The height H3, distance W2, and distance H2 of the pouch 10 of Example 5 were 40 mm, 60 mm, and 115 mm, respectively.

[0127] Similar to Example 1, 180g of frozen chicken rice was filled into pouch 10. Subsequently, the thawing, filling, and heating processes were carried out under the same conditions as in Example 1. The height H11 of the frozen chicken rice and the height H12 of the thawed frozen chicken rice were 60mm and 38mm, respectively. During the first filling process, the dimension M1 of the opening 23a was less than 3mm. Therefore, while widening the opening 23a with the left hand, the beaten egg was poured into the pouch 10 with the right hand.

[0128] Next, the removal process was carried out to remove the omurice from pouch 10. The length W11, width W12, and height H13 of the removed omurice were 130 mm, 90 mm, and 30 mm, respectively. In plan view, the shape of the omurice was approximately elliptical.

[0129] [Example 6] A pouch 10, as shown in Figure 17B, was fabricated using the same laminated film as in Example 1. The pouch 10 of Example 6 differs from the pouch 10 of Example 5 in that it does not have a sealing portion extending horizontally along the lower ends of the first lower section 12a and the second lower section 12b. The width W0, height H0, height H3, distance W2, and distance H2 of the pouch 10 of Example 6 were the same as those of Example 5.

[0130] Similar to Example 1, 180g of frozen chicken rice was filled into pouch 10. Subsequently, the thawing, filling, and heating processes were carried out under the same conditions as in Example 1. The height H11 of the frozen chicken rice and the height H12 of the thawed frozen chicken rice were the same as in Example 5. During the first filling process, the dimension M1 of the opening 23a was less than 3mm. Therefore, while widening the opening 23a with the left hand, the beaten egg was poured into the pouch 10 with the right hand.

[0131] Next, the removal process was carried out to remove the omurice from pouch 10. The length W11, width W12, and height H13 of the removed omurice were the same as in Example 5. In plan view, the shape of the omurice was approximately elliptical.

[0132] [Example 7] A biaxially oriented plastic film was prepared as the first substrate layer 51, which had a silicon dioxide vapor-deposited layer. The plastic film contained nylon (ON). The thickness of the plastic film was 15 μm.

[0133] An unstretched sealant film containing linear low-density polyethylene (LLDPE) was prepared as the sealant layer 52. The thickness of the sealant film was 60 μm.

[0134] A laminated film was fabricated by laminating a plastic film and a sealant film using a dry lamination method. The thickness of the laminated film was 78 μm. The layer structure of the laminated film is as follows. IB-ON15 / Connection 3 / LLDPE60

[0135] The laminated films described above were used as the first film 15, the second film 16, and the third film 17 to produce the pouch 10 shown in Figure 20. The pouch 10 of Example 7 differs from the pouch 10 of Example 1 in that the lower ends 32a of the two first inclined inner edges 32 are connected to each other, and the first inclined inner edges 32 extend in a curved shape. The pouch 10 of Example 7 is also equipped with a zipper tape 24. The width W0, height H0, height H3, distance W2, and distance H2 of the pouch 10 of Example 7 were 180 mm, 180 mm, 45 mm, 0 mm, and 150 mm, respectively.

[0136] Similar to Example 1, 180g of frozen chicken rice was filled into pouch 10. Subsequently, the thawing, loading, and heating processes were carried out under the same conditions as in Example 1. The height H11 of the frozen chicken rice and the height H12 of the thawed frozen chicken rice were 65mm and 50mm, respectively. During the first loading process, the dimension M1 of the opening 23a was 3mm or more.

[0137] Next, the omurice was removed from pouch 10. The length W11, width W12, and height H13 of the removed omurice were 120 mm, 85 mm, and 50 mm, respectively. In plan view, the shape of the omurice was approximately circular.

[0138] Figure 25 shows the configuration of pouch 10 and the cooking results in Examples 1 to 7. In the "Opening Ability" column, "great" means that the dimension M1 of the opening 23a during the first filling step was 3 mm or more. "good" means that the dimension M1 of the opening 23a during the first filling step was less than 3 mm, and the beaten egg was added to pouch 10 while providing support to widen the opening 23a.

[0139] As can be seen from the comparison of Examples 2 to 4, as the height H3 of the first inclined inner edge 32 increased, there was a tendency for the opening ability of the opening 23a to decrease.

[0140] As can be seen from the comparison of Examples 1, 2, 5, and 6, the opening of the opening 23a was better when the first inclined inner edge 32 was straight compared to when the first inclined inner edge 32 was curved. On the other hand, as can be seen from Example 7, even when the first inclined inner edge 32 was curved, the opening of the opening 23a was good when the pouch 10 was equipped with a zipper tape 24. [Explanation of symbols]

[0141] 10 pouches 11 Top 12 Lower part 12a Lower part 1 12b Second Lower Section 13 Side 15. Film No. 1 15x First inner surface 15y 1st outer surface 16. Film No. 2 16x 2nd inner surface 16y 2nd outer surface 17. Film No. 3 17f fold 17x Third Inner Surface 17y 3rd outer surface 20 Side sealing portion 21 Common-law marriage 22 Outer edge 23. Section to be opened 24 Chuck Tape 25 Upper sealing part 26 Upper seal area 30 First lower seal section 30a 1st top end 31 First common-law marriage 32 First inclined inner edge 32a bottom end 33. First horizontal inner edge 36 First outer edge 37 First inclined outer edge 38. First horizontal outer edge 40 Second lower seal section 40a 2nd upper end 41 Second common-law marriage 42. Second inclined inner edge 42a bottom end 43. Second horizontal inner edge 46. ​​Second outer edge 47. Second inclined outer edge 48. Second horizontal outer edge 51 1st base layer 52. Sealant layer 53 First adhesive layer 54 Second base layer 55 Second adhesive layer 61 1st contents 62 Second contents 71 Prepared foods 72 plates

Claims

1. A self-standing pouch for microwave use, A first film including a first inner surface and a first outer surface, A second film including a second inner surface facing the first inner surface and a second outer surface, A third film located at the bottom of the pouch includes a third inner surface which includes a portion facing the first inner surface and a portion facing the second inner surface, and a third outer surface, A side sealing portion located on the side of the pouch, which joins the first inner surface and the second inner surface, The portion of the pouch that is intended to be broken when the pouch is opened, A first lower seal portion, which includes a first upper end connected to the side seal portion and joins the first inner surface and the third inner surface, It includes a second upper end connected to the side seal portion and a second lower seal portion that joins the second inner surface and the third inner surface, The first lower seal portion comprises a first inner edge including a first inclined inner edge that is displaced inward as it extends downward from the first upper end, and a first outer edge. The second lower seal portion comprises a second inner edge including a second inclined inner edge that is displaced inward as it extends downward from the second upper end, and a second outer edge. The lower part of the pouch is the entire region of the pouch below the first upper end of the first lower seal portion and the second upper end of the second lower seal portion. The first inner surface and the second inner surface are not joined together in the entire lower part of the pouch. The ratio of the vertical distance (H2) from the first upper end of the first lower seal portion to the portion to be opened to the height (H3) of the first inclined inner edge in the vertical direction is 2.0 or more and 3.0 or less. A pouch in which the width of the pouch is greater than or equal to the height of the pouch.

2. No chuck tape is attached to the first inner surface and the second inner surface. The pouch according to claim 1, wherein the first inclined inner edge and the second inclined inner edge extend in a straight line.

3. The pouch according to claim 1, wherein the first inclined inner edge and the second inclined inner edge extend in a curved shape.

4. The first inner edge includes a first horizontal inner edge extending horizontally between the lower ends of the two first inclined inner edges, The pouch according to any one of claims 1 to 3, wherein the second inner edge includes a second horizontal inner edge extending horizontally between the lower ends of the two second inclined inner edges.

5. The pouch according to claim 4, wherein the distance between the lower ends of the two first inclined inner edges is 50 mm or more.

6. The lower ends of the two first inclined inner edges are connected to each other. The pouch according to claim 3, wherein the lower ends of the two second inclined inner edges are connected to each other.

7. The pouch according to claim 1 or 3, comprising tapes attached to the first inner surface and the second inner surface.

8. The pouch according to any one of claims 1 to 7, wherein the first inclined inner edge and the second inclined inner edge have a height of 25 mm or more.

9. The pouch according to any one of claims 1 to 8, wherein the first inclined inner edge and the second inclined inner edge have a height of 45 mm or less.

10. The pouch according to any one of claims 1 to 9, wherein the first film, the second film, and the third film have a thickness of 75 μm or more.

11. The pouch according to any one of claims 1 to 10, wherein the first film, the second film, and the third film have a thickness of 130 μm or less.

12. The pouch contains a first contents, The pouch according to any one of claims 1 to 11, wherein the first contents include frozen food or powder.

13. The pouch according to claim 12, wherein the first contents include frozen rice.

14. A preparation step for preparing the pouch according to claim 12, A filling step of putting the second contents into the pouch, A cooking method comprising a heating step of heating a pouch containing the first contents and the second contents in a microwave oven.

Images