JP6693304B2 - Pouch - Google Patents

Description

  The present invention relates to a pouch that can be cooked by electromagnetic heating.

  There is known a pouch capable of electromagnetic induction heating cooking in which the contents are heated by an electromagnetic cooking device utilizing induction heating (for example, refer to Patent Document 1). It is said that the pouch described in Patent Document 1 can be cooked and heated in an electromagnetic cooker by providing a heating element made of aluminum foil or the like on the inner surface of the pouch.

JP 2007-296040 A

  However, in the pouch of Patent Document 1, the body member sheet in which the heating element sheets are laminated and the bottom member sheet in which the heating element sheets are laminated are bonded to form a bottom seal. The bottom seal is provided over the entire width of the pouch. Therefore, the heating element sheet of the body member sheet and the heating element sheet of the bottom member sheet are close to each other. When the pouch having such a configuration is placed on the placement surface of the electromagnetic cooker and subjected to electromagnetic induction heating cooking, the pouch may be overheated due to the adjacent body member sheet and heating element sheet. ..

  An object of the present invention is to provide a pouch capable of suppressing overheating of the pouch in an electromagnetic induction heating cookable pouch in which the contents are heated by an electromagnetic cooker using induction heating.

  As a result of intensive studies to solve the above problems, the present inventors have found that the above problems can be solved by the following constitutions, and have completed the present invention.

  (1) A pouch that is composed of a single film that can be heated by electromagnetic induction and that includes a front surface, a back surface, a bottom surface, and a housing portion, and the front surface and the bottom surface are connected via a first broken line. The back surface and the bottom surface are connected to each other through a second fold line, and the bottom surface includes a first bottom surface portion including the first fold line and a second bottom surface portion including the second fold line. And the front surface is partitioned into a first surface portion facing the back surface and a second surface portion facing the first bottom surface portion of the bottom surface, and the back surface is the front surface. And a second back surface portion facing the second bottom surface portion of the bottom surface, and the first front surface portion of the front surface and the first back surface portion of the back surface are: Both side portions of the first front surface portion and both side portions of the first back surface portion are respectively Are joined by a pair of side joints that meet, the second surface portion of the surface and the first bottom surface portion of the bottom surface extend in a direction from the side joint portion toward the first fold line, Further, the second bottom surface portion of the back surface and the second bottom surface portion of the bottom surface are joined to each other by the pair of first bottom joining portions extending inward in the lateral direction of the pouch. From the pair of second bottom joints extending in the direction from the first fold line to the second fold line and extending inward in the lateral direction of the pouch, and the lower ends of the pair of first bottom joints are separated from each other. A pouch in which the lower ends of the pair of second bottom joints are separated.

  (2) A pouch that is composed of a single film that can be heated by electromagnetic induction, and that has a front surface, a back surface, a bottom surface, and a housing portion, wherein the front surface and the bottom surface are connected via a first broken line. The back surface and the bottom surface are connected to each other through a second fold line, and the bottom surface includes a first bottom surface portion including the first fold line and a second bottom surface portion including the second fold line. And the front surface is partitioned into a first surface portion facing the back surface and a second surface portion facing the first bottom surface portion of the bottom surface, and the back surface is the front surface. And a second back surface portion facing the second bottom surface portion of the bottom surface, and the first front surface portion of the front surface and the first back surface portion of the back surface are: Both side portions of the first front surface portion and both side portions of the first back surface portion are respectively Are joined by a pair of side joints that meet, the second surface portion of the surface and the first bottom surface portion of the bottom surface extend in a direction from the side joint portion toward the first fold line, Further, the second bottom surface portion of the back surface and the second bottom surface portion of the bottom surface are joined to each other by the pair of first bottom joining portions extending inward in the lateral direction of the pouch. From the first folding line to the second fold line, and is joined by a pair of second bottom joint portions extending inward in the lateral direction of the pouch, and the bottom surface is provided at the central portion in the lateral direction of the pouch. A pouch having a ground plane that does not include a first bottom joint and the second bottom joint.

  (3) A non-ground surface portion including the first bottom joint portion and the second bottom joint portion is provided laterally outward of the ground surface portion, and the non-ground surface portion mounts the ground surface portion on a mounting surface. The pouch according to (2), which has a shape in which the first bottom joint portion and the second bottom joint portion do not substantially abut the placement surface when placed.

  (4) The pouch according to (2) or (3), in which the upper portion of the accommodation portion is sealed or opened.

  (5) The pouch according to any one of (1) to (4), wherein the film is a laminate in which at least a base material layer, a metal foil layer, and a sealant layer are laminated in this order.

  (5) The second surface portion of the surface and the first bottom surface portion of the bottom surface are joined by the first bottom joint portion, and the second portion is located below the side joint portion. The second bottom surface of the back surface and the second bottom surface of the bottom surface are joined by a pair of first lower side joining portions that join both sides of the front surface portion and both sides of the first bottom surface portion, respectively. The portion is joined by a second bottom joint portion, and a pair that joins both side portions of the second back surface portion and both side portions of the second bottom surface portion that are located below the side joint portion, respectively. The pouch according to any one of (1) to (5), wherein the pouch is joined by the second lower side joint portion of.

  ADVANTAGE OF THE INVENTION According to this invention, the pouch which can suppress the overheating of a pouch can be provided in the electromagnetic induction heating cooking pouch which heats the content with the electromagnetic cooking device using induction heating.

It is a figure showing pouch 1A of an embodiment of the present invention, and is a figure showing pouch 1A in the state where bottom 4 was folded in two and upper part opening 51 was opened. (A) is a front view and (B) is a rear view. It is an AA line end view shown in FIG. It is a figure which shows the state which extended the bottom face 4 in the front-back direction D3 about the pouch 1A shown in FIG. 1, (A) is a front view, (B) is a right side view, (C) is a bottom view. It is a figure which shows the film 6 which forms the pouch 1A shown in FIG. 1, (A) is a perspective view, (B) is a right view. (A) is a front view of the film 6 shown in FIG. 4, (B) is a rear view of the film 6 shown in FIG. 4, (C) is a cross-sectional view taken along line CC of FIG. 4 (B), 4D is a cross-sectional view taken along the line D-D shown in FIG. It is a cross-sectional view of the film 6. It is a perspective view showing pouch 1B of an embodiment of the present invention, and is a figure showing pouch 1B in the state where bottom face 4 was formed three-dimensionally and upper opening part 51 was sealed. It is a front view of the pouch 1B shown in FIG. It is a bottom view of the pouch 1B shown in FIG. It is a perspective view showing pouch 1C of an embodiment of the present invention, and is a figure showing pouch 1C in the state where bottom face 4 was formed three-dimensionally and upper opening part 51 was opened. It is a front view (FIG. 1 (A) corresponding figure) which shows the 1st modification of this invention. It is a front view (FIG. 1 (A) corresponding figure) which shows the 2nd modification of this invention. It is a figure which shows the 3rd modification of this invention, (A) is a partial front view (FIG. 1 (A) corresponding figure), (B) is a bottom view (FIG. 3 (C) corresponding figure). It is a figure which shows the 4th modification of this invention, (A) is a front view (FIG. 1 (A) corresponding figure), (B) is a bottom view (FIG. 3 (C) corresponding figure). It is a figure which shows the 5th modification of this invention, (A) is a front view (FIG. 1 (A) corresponding figure), (B) is a bottom view (FIG. 3 (C) corresponding figure). It is a figure which shows the 6th modification of this invention, (A) is a front view (FIG. 1 (A) corresponding figure), (B) is a bottom view (FIG. 3 (C) corresponding figure).

[Embodiment]
Hereinafter, the pouch 1 (1A, 1B, 1C) of the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a pouch 1A according to an embodiment of the present invention, and is a diagram showing the pouch 1A in a state in which a bottom surface 4 is folded in two and an upper opening 51 is opened. (A) is a front view and (B) is a rear view. FIG. 2 is an end view taken along the line AA shown in FIG. 3 is a diagram showing a state in which the bottom surface 4 of the pouch 1A shown in FIG. 1 is extended in the front-rear direction D3, (A) is a front view, (B) is a right side view, and (C) is a bottom view. 4A and 4B are views showing a film 6 forming the pouch 1A shown in FIG. 1, in which FIG. 4A is a perspective view and FIG. 4B is a right side view.

  5, (A) is a front view of the film 6 shown in FIG. 4, (B) is a rear view of the film 6 shown in FIG. 4, and (C) is a line C-C shown in FIG. 4 (B). Sectional drawing, (D) is the DD sectional view taken on the line shown in FIG. 4 (B). FIG. 6 is a sectional view of the film 6. FIG. 7 is a perspective view showing the pouch 1B according to the embodiment of the present invention, and is a view showing the pouch 1B in which the bottom surface 4 is three-dimensionally formed and the upper opening 51 is sealed. FIG. 8 is a front view of the pouch 1B shown in FIG. FIG. 9 is a bottom view of the pouch 1B shown in FIG. FIG. 10 is a perspective view showing the pouch 1C according to the embodiment of the present invention, and is a view showing the pouch 1C in which the bottom surface 4 is three-dimensionally formed and the upper opening 51 is opened.

  In the description of the pouch 1 of the following embodiment, (1) the pouch 1 in which the bottom surface 4 is folded in two and the upper opening 51 is open is referred to as “pouch 1A”, and (2) the bottom surface 4 is three-dimensional. The pouch 1 in which the upper opening 51 is sealed by the upper seal portion 52 is called "pouch 1B", and (3) the bottom surface 4 is three-dimensionally formed, and the upper opening is formed. The pouch 1 in which 51 is opened is referred to as “pouch 1C”. When the description common to "pouch 1A", "pouch 1B", and "pouch 1C" is given, it is appropriately called "pouch 1".

  Further, for convenience, parts, regions, polygonal lines, and the like that have not been formed are designated by appropriate reference numerals. For example, in the state shown in FIG. 1, the upper seal portion 52 is not formed in the upper opening portion 51, but the region where the upper seal portion 52 formed in the state shown in FIG. Reference numeral 52 is attached. Further, although various kinds of joints are not formed on the film 6 shown in FIG. 5, reference numerals 12, 14, 16, 17, 18 are given in FIG. The polygonal line shown in FIG. 5 is denoted by L6 in FIG. In addition, in the pouch 1A shown in FIG. 2, the accommodating portion 5 is not formed in a space shape, but the portion where the accommodating portion 5 is planned is designated by the reference numeral 5 in FIG.

  As shown in FIGS. 1 to 10, the pouch 1 of the present embodiment is composed of a single film 6 that can be heated by electromagnetic induction, and has a front surface 2, a back surface 3, a bottom surface 4, and a housing portion 5. It is a pouch 1 provided. As shown in FIG. 1 and the like, the vertical direction of the pouch 1 is referred to as “vertical direction D1”, the lateral direction (horizontal direction) of the pouch is referred to as “lateral direction D2”, and the front-rear direction is referred to as “front-rear direction D3”.

(Pouch 1A)
(1) First, the "pouch 1A" in which the bottom surface 4 is folded in two and the upper opening 51 is opened will be described. As shown in FIG. 4 and FIG. 5, the pouch 1A of the embodiment is formed by folding a single rectangular strip-shaped film 6 at a fold line at a predetermined location and joining it at a joining portion at a predetermined location. Specifically, as shown in FIGS. 1 to 5, the rectangular strip-shaped film 6 is mountain-folded along the longitudinal direction at the first fold line L1, at the third fold line L3 at the valley fold, and at the second fold line L2. Fold it back three times to make a mountain fold. By folding back in this way, the film 6 becomes a shape folded back in a substantially W shape (inverted M shape). The portion of the film 6 between the first polygonal line L1 and the second polygonal line L2 becomes the bottom surface 4 (bottom sheet 40). A portion of the bottom surface 4 (bottom sheet 40) between the first polygonal line L1 and the third polygonal line L3 becomes a first bottom surface portion 41. The portion of the bottom surface 4 (bottom sheet 40) between the second polygonal line L2 and the third polygonal line L3 becomes the second bottom surface portion 42. The portion of the film 6 outside the first fold line L1 becomes the front surface 2 (top sheet 20). The portion of the film 6 outside the second fold line L2 becomes the back surface 3 (back surface sheet 30).

  That is, the film 6 connects the rectangular top sheet 20 forming the front surface 2, the rectangular back sheet 30 forming the back surface 3, the top sheet 20 and the back sheet 30 in series, and forms the bottom surface 4. And a rectangular bottom sheet 40. The top sheet 20, the bottom sheet 40, and the back sheet 30 are continuously arranged.

  Further details will be described. The top surface 2 (top sheet 20) and the bottom surface 4 (bottom sheet 40) are connected to each other via a first fold line L1. The back surface 3 (back surface sheet 30) and the bottom surface 4 (bottom surface sheet 40) are connected to each other via a second fold line L2. The bottom surface 4 (bottom sheet 40) is partitioned into a first bottom surface portion 41 including the first fold line L1 and a second bottom surface portion 42 including the second fold line L2. The first bottom surface portion 41 and the second bottom surface portion 42 are continuously provided via a third fold line L3, and are convex toward the housing portion 5 at the third fold line L3 (convex upward), 2 It is folded in half.

As shown in FIG. 2, the front surface 2 (top sheet 20) has a first surface portion 21 facing the back surface 3 (back sheet 30) and a first bottom surface portion 41 of the bottom surface 4 (bottom sheet 40). It is divided into two surface portions 22. The first surface portion 21 and the second surface portion 22 are separated by a first boundary line L4.
The back surface 3 (back surface sheet 30) is divided into a first back surface portion 31 facing the front surface 2 (top sheet 20) and a second back surface portion 32 facing a second bottom surface portion 42 of the bottom surface 4 (bottom sheet 40). Has been done. The first back surface portion 31 and the second back surface portion 32 are separated by a second boundary line L5.
In FIG. 3, the front surface 2 (top sheet 20) is bent at the first boundary line L4 and the back surface 3 (back sheet 30) is bent at the second boundary line L5 so that the bottom surface 4 (bottom sheet 40) is in the front-back direction D3. It shows the extended state.

  The front surface 2 (top sheet 20) and the back surface 3 (back sheet 30) are arranged to face each other in the front-rear direction D3. The accommodation portion 5 is a space surrounded by the top surface 2 (top sheet 20), the bottom surface 4 (bottom sheet 40) and the back surface 3 (back sheet 30). The upper opening 51 is referred to as the “upper opening 51” for convenience, in either the open state or the state in which it is sealed by the upper sealing portion 52 as described later.

  The first front surface portion 21 of the front surface 2 (front surface sheet 20) and the first back surface portion 31 of the back surface 3 (back surface sheet 30) are both side portions 11 of the first front surface portion 21 and both side portions 11 of the first back surface portion 31. Are joined by a pair of side joining portions 12 respectively joining the two. More specifically, the left side portion 11 of the first front surface portion 21 and the left side portion 11 of the first back surface portion 31 are joined by the left side joint portion 12. Similarly, the right side portion 11 of the first front surface portion 21 and the right side portion 11 of the first back surface portion 31 are joined by the right side joining portion 12. The side joint portion 12 extends along the up-down direction D1.

  The second surface portion 22 of the front surface 2 (top sheet 20) and the first bottom surface portion 41 of the bottom surface 4 (bottom sheet 40) are first inward in the lateral direction D2 from the lower end 12B of the side joint portion 12. It is joined by a pair of first bottom joint portions 14 extending to the polygonal line L1. More specifically, the second surface portion 22 of the surface 2 (top sheet 20) and the first bottom surface portion 41 of the bottom surface 4 (bottom sheet 40) are directed obliquely downward to the right from the lower end 12B of the left side joint portion 12. Is joined by the left first bottom joint portion 14 extending to the first polygonal line L1 and extends from the lower end 12B of the right side joint portion 12 to the first polygonal line L1 obliquely downward leftward to the first polygonal line L1. It is joined by the joining portion 14.

  The second back surface portion 32 of the back surface 3 (back surface sheet 30) and the second bottom surface portion 42 of the bottom surface 4 (bottom sheet 40) are second inward in the lateral direction D2 from the lower end 12B of the side joint portion 12. It is joined by a pair of second bottom joint portions 16 extending to the polygonal line L2. More specifically, the second back surface portion 32 of the back surface 3 (back surface sheet 30) and the second bottom surface portion 42 of the bottom surface 4 (bottom sheet 40) are directed obliquely downward to the right from the lower end 12B of the left side joint portion 12. And the second bottom portion on the right side extending from the lower end 12B of the side joint portion 12 on the right side to the second fold line L2 diagonally downward to the left while being joined by the second bottom joint portion 16 on the left side extending to the second fold line L2. It is joined by the joining portion 16.

  The details of the first bottom joint portion 14 and the second bottom joint portion 16 will be described. The two are different in the place where they are provided, but have the same configuration, and therefore the description of one is incorporated into the description of the other. In the present embodiment, the first bottom joint portion 14 and the second bottom joint portion 16 are straight lines having the same width (equal widths in the extending direction). The width W14 of the first bottom joint portion 14 (see FIG. 1A) and the width W16 of the second bottom joint portion 16 (see FIG. 1B) are, for example, 2 mm or more and 50 mm or less.

  The lower ends 14B of the pair of first bottom joint portions 14 are separated from each other in the lateral direction D2. The lower ends 16B of the pair of second bottom joint portions 16 are separated from each other in the lateral direction D2. The first bottom joint portion 14 and the second bottom joint portion 16 are not provided over the entire width of the bottom surface 4 (over the entire area in the lateral direction D2). That is, the bottom surface 4 (bottom surface sheet 40) has a portion (ground surface portion 43 described later) in the lateral direction D2 where the first bottom joint portion 14 and the second bottom joint portion 16 are not provided.

  In the present embodiment, the second surface portion 22 of the surface 2 (top sheet 20) and the first bottom surface portion 41 of the bottom surface 4 (bottom sheet 40) are the second surface portion located below the side joint portion 12. Two side portions of 22 and the side portions of the first bottom surface portion 41 are joined by a pair of first lower side joint portions 17. The lower side joint part 17 extends along the vertical direction D1.

  The second back surface portion 32 of the back surface 3 (back surface sheet 30) and the second bottom surface portion 42 of the bottom surface 4 (bottom sheet 40) are located on both sides of the second back surface portion 32 located below the side joint portion 12. It is joined by a pair of second lower side joining portions 18 that join both side portions of the second bottom surface portion 42, respectively. The lower side joint portion 18 extends along the vertical direction D1.

  In addition, the first lower corner portion 71 (including the first lower side joint portion 17) formed of the top sheet 20 and the bottom sheet 40 outside the first bottom joint portion 14 contributes to the accommodation function of the accommodation portion 5. Not not. Similarly, the second lower corner portion 72 (including the second lower side joint portion 18) composed of the back sheet 30 and the bottom sheet 40 outside the second bottom joint portion 16 contributes to the accommodation function of the accommodation portion 5. I haven't. In the present embodiment, the first lower corner portion 71 and the second lower corner portion 72 are left for facilitating manufacturing (omission of cutting / removal).

  The side joint portion 12, the first bottom joint portion 14, the second bottom joint portion 16, the first lower side joint portion 17, and the second lower side joint portion 18 are formed by, for example, heat sealing.

[Layer structure of film 6]
As shown in FIG. 6, the electromagnetic induction heatable film 6 is a laminated body in which a base material layer 61, a metal foil layer 62, and a sealant layer 63 are laminated in this order from at least the outside. Other layers may be provided in the laminated body. For example, CPP (containing iron powder) may be provided on the outside of the base material layer 61 (see a specific example of a laminated body described later).

  Specific examples of the material of the base material layer 61 include polyesters such as polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate, polyamides such as polycarbonate, nylon 6, nylon 6.6, nylon 12, nylon 6.66 copolymers, and the like. And polyolefins such as polyethylene and polypropylene. The base material layer 61 is made of, for example, an unstretched film of a thermoplastic resin, a uniaxially stretched film, or a biaxially stretched film.

  The metal foil layer 62 is a conductive layer and functions as a heating element for the electromagnetic cooker. Specific examples of the material of the metal foil layer 62 include aluminum, nickel, iron, stainless steel, copper, alloys of these metals, and carbon. Note that nonmagnetic materials such as aluminum and copper are heated by Joule heat loss, while ferromagnetic materials such as iron and nickel are also heated by hysteresis loss. Aluminum, which does not heat due to hysteresis loss and is inexpensive and excellent in workability, is preferably used.

  The thickness of the metal foil layer 62 can be appropriately selected depending on the type of material. In the case of aluminum, its thickness is 5 to 120 μm, more preferably 10 to 80 μm. Within this range, the electromagnetic cooker pouch can be heated by Joule heat loss due to eddy currents in the surface direction.

  Specific examples of the material for the sealant layer 63 include polyamides such as nylon 6, nylon 6.6, nylon 12, nylon 6/66 copolymers; polyolefins such as polyethylene and polypropylene; and polyester ethers. The sealant layer is preferably unstretched.

The following are specific examples of the laminate. In addition, "/" is used as a notation indicating a boundary between layers when the layers are listed. The layers are described from the outside to the inside.
In the pouch 1 for retort (curry, oden, etc.),
Polybutylene terephthalate (PBT) / Aluminum / Unstretched polypropylene (CPP)
CPP (with iron powder) / PBT / aluminum / CPP
In the pouch 1 for noodles with noodles (ramen etc.),
Paper / Aluminum / CPP
CPP (with iron powder) / paper / aluminum / CPP

  The film 6 made of a laminated body in which the base material layer 61, the metal foil layer 62, and the sealant layer 63 are laminated is folded back into a predetermined shape in a state where the sealant layers 63 are in contact with each other, and a predetermined portion is heat-sealed. To be done. As a result, the side joint portion 12, the first bottom joint portion 14, the second bottom joint portion 16, the first lower side joint portion 17, and the second lower side joint portion 18 are formed.

(Pouch 1B)
(2) Next, the "pouch 1B" in which the bottom surface 4 is three-dimensionally formed and the upper opening portion 51 is sealed by the upper sealing portion 52 will be described.
As shown in FIG. 3, the bottom surface 4 (bottom surface sheet 40) is flattened. Then, the front surface 2 (top sheet 20) and the back surface 3 (back sheet 30) are separated from each other in the front-rear direction D3. Further, the bottom surface 4 (bottom sheet 40) is bent so as to form a left-side sixth fold line L6 that connects the lower end 14B of the left first bottom joint portion 14 and the lower end 16B of the left second bottom joint portion 16. Similarly, the bottom surface 4 (bottom sheet 40) is bent so as to form a right-side sixth fold line L6 connecting the lower end 14B of the right first bottom joint portion 14 and the lower end 16B of the right second bottom joint portion 16. .. The reason why the sixth polygonal line L6 is formed is that the portion where the two metal foil layers 62 overlap each other generates a large amount of heat, and the portion is separated from the placement surface (top surface) of the electromagnetic cooker.

  Accordingly, the bottom surface 4 (bottom surface sheet 40) is formed with the ground surface portion 43 that does not include the first bottom joint portion 14 and the second bottom joint portion 16 at the center in the lateral direction D2, and the ground surface portion 43 of the ground surface portion 43 is formed. The non-grounding surface portions 44, 44 including the first bottom joint portion 14 and the second bottom joint portion 16 are formed on the outside (on each of the left side and the right side). As shown in FIG. 8, the ground contact surface portion 43 is substantially flat, and when viewed from the front, the non-ground contact surface portion 44 is bent at the sixth fold line L6 and extends obliquely upward.

  The width W43 (see FIG. 9, length in the lateral direction D2) of the ground contact surface portion 43 is, for example, 90 mm or more and 300 mm or less. The non-grounded surface portion 44 has the first bottom joint portion 14 and the second bottom joint portion 16 substantially on the mounting surface when the ground surface portion 43 is mounted on the mounting surface (not shown) of the electromagnetic cooker. Will have a shape that does not abut.

  The "shape in which the first bottom joint portion 14 and the second bottom joint portion 16 do not substantially contact the mounting surface" for the non-grounded surface portion 44 means that the contents are not accommodated in the accommodation portion 5. In addition, in the below-described pouch 1C (see FIG. 10) in which the bottom surface 4 is three-dimensionally formed, it means that the first bottom joint portion 14 and the second bottom joint portion 16 do not contact the mounting surface.

  Further, the shape of the front surface 2 and the back surface 3 corresponding to the housing portion 5 is a substantially hexagonal shape in which a rectangular shape is arranged in the upper part and an isosceles trapezoid which is narrowed in the lower part is arranged. The shape of the bottom surface 4 corresponding to the housing portion 5 is a substantially hexagonal shape. Specifically, the ground contact surface portion 43 has a rectangular shape, and the non-ground contact surface portions 44 and 44 each have an isosceles triangular shape. From another point of view, the first bottom surface portion 41 has an isosceles trapezoidal shape that narrows forward, and the second bottom surface portion 42 has an isosceles trapezoidal shape that narrows backward.

  Moreover, the accommodation part 5 is formed in a space shape. Since the upper opening 51 in the upper part of the container is opened large, it becomes easy to introduce the contents into the container 5 through the upper opening 51. After the contents are stored in the storage portion 5, as shown in FIGS. 7 to 9, the upper seal portion 52 is formed in the upper opening portion 51, so that the bottom surface 4 is three-dimensionally formed, and the upper portion is formed. The “pouch 1B” in which the opening 51 is sealed by the upper seal portion 52 is formed. In this state, the edge portion of the accommodating portion 5 is located between the upper seal portion 52, the side joint portion 12, the first bottom joint portion 14, the second bottom joint portion 16, and the lower ends 14B of the first bottom joint portion 14. It is configured by the first broken line L1 and the second broken line L2 between the lower ends 16B of the second bottom joint portions 16.

(Pouch 1C)
(3) Next, the "pouch 1C" in which the bottom surface 4 is three-dimensionally formed and the upper opening 51 is opened will be described. As shown in FIG. 10, in the pouch 1C of the present embodiment, the upper opening 51 may be released. The state in which the upper opening portion 51 is released includes a state before the upper sealing portion 52 is formed in the upper opening portion 51 and a state in which the contents are removed from the storage portion 5 after the upper sealing portion 52 is formed in the upper opening portion 51. Both the state in which the upper seal portion 52 is opened when taking out or cooking with heat is included.

  The pouch 1 of the present embodiment is cooked as follows. The ground surface portion 43 of the bottom surface 4 of the pouch 1 is placed on the placement surface of the electromagnetic cooker (not shown) with or without opening the upper opening 51 of the pouch 1. At that time, the non-grounded surface portion 44 of the bottom surface 4 is unlikely to contact the mounting surface of the electromagnetic cooker. When a high frequency is applied to the magnetic force generating coil portion provided below the mounting surface of the electromagnetic cooker, an eddy current is generated in the pouch 1 on the mounting surface of the electromagnetic cooker (particularly in the grounding surface portion 43). The pouch 1 (particularly the ground plane portion 43) is heated by electric resistance. Finally, the contents stored in the storage portion 5 of the pouch 1 are cooked. In the present embodiment, since the ground contact surface 43 is flat, the ground contact surface 43 is likely to contact the mounting surface of the electromagnetic cooker entirely. Therefore, the ground surface portion 43 is efficiently heated.

[Effect of Embodiment]
According to the pouch 1 of this embodiment, for example, the following effects are exhibited. In the pouch 1 of the present embodiment, the second surface portion 22 of the surface 2 and the first bottom surface portion 41 of the bottom surface 4 extend in the direction from the side joint portion 12 toward the first fold line L1 and the lateral side of the pouch. The second bottom surface portion 32 of the back surface 3 and the second bottom surface portion 42 of the bottom surface 4 are bonded to each other by the pair of first bottom bonding portions 14 extending inward in the direction D2. The lower ends 14B of the pair of first bottom joint portions 14 are separated from each other by the pair of second bottom joint portions 16 extending in the direction toward the two-fold line L2 and extending inward in the lateral direction D2 of the pouch. The lower ends 16B of the pair of second bottom joint portions 16 are separated from each other. That is, the bottom joint portion 14 and the bottom joint portion 16 are not provided over the entire width of the bottom surface 4.

  Therefore, according to the pouch 1 of the present embodiment, it is possible to reduce the area where the first bottom joint portion 14 and the second bottom joint portion 16 to which the film 6 is joined abut on the mounting surface of the electromagnetic cooker. Therefore, overheating of the pouch 1 can be suppressed.

  Further, in the present embodiment, the bottom surface 4 has the ground surface portion 43 that does not include the first bottom joint portion 14 and the second bottom joint portion 16 in the center portion in the lateral direction D2. In addition, a non-ground surface portion 44 including the first bottom joint portion 14 and the second bottom joint portion 16 is provided outside the ground surface portion 43, and the non-ground surface portion 44 connects the ground surface portion 43 to the mounting surface of the electromagnetic cooker. The first bottom joint portion 14 and the second bottom joint portion 16 have a shape that does not substantially abut on the mounting surface when placed on. Therefore, according to the pouch 1 of the present embodiment, particularly, the first bottom joint portion 14 and the second bottom joint portion 16 are less likely to come into contact with the mounting surface of the electromagnetic cooker.

  The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiment, and can be implemented in various forms. Modifications will be described below. Regarding the points that are not particularly described, the description of the embodiment is applied or incorporated as appropriate. The description regarding the front surface 2 side and the first bottom surface portion 41 side is applied to the back surface 3 (not shown) and the second bottom surface portion 42 side, respectively. The descriptions (configurations) regarding the embodiment and the modified examples can be combined as appropriate.

  FIG. 11 is a front view (corresponding to FIG. 1A) showing a first modified example of the present invention. FIG. 12 is a front view (corresponding to FIG. 1A) showing a second modification of the present invention. 13A and 13B are views showing a third modified example of the present invention, in which FIG. 13A is a partial front view (corresponding to FIG. 1A) and FIG. 13B is a bottom view (corresponding to FIG. 3C). .. 14A and 14B are views showing a fourth modified example of the present invention, where FIG. 14A is a front view (corresponding to FIG. 1A) and FIG. 14B is a bottom view (corresponding to FIG. 3C). 15A and 15B are diagrams showing a fifth modification of the present invention, in which FIG. 15A is a front view (corresponding to FIG. 1A) and FIG. 15B is a bottom view (corresponding to FIG. 3C). 16A and 16B are views showing a sixth modified example of the present invention, in which FIG. 16A is a front view (corresponding to FIG. 1A) and FIG. 16B is a bottom view (corresponding to FIG. 3C).

[First Modification]
In the above-described embodiment, the first bottom joint portion 14 and the second bottom joint portion 16 (not shown) are connected to the lower ends of the side joint portions 12, but are not limited thereto. In the pouch 1A-1 (1-1) of the first modification shown in FIG. 11, the first bottom joint portion 14 and the second bottom joint portion 16 are continuously provided to the lower end 12B of the side joint portion 12. However, it is spaced downward from the lower end 12B. The lower end 12B of the side joint portion 12 and the upper edge 14C of the first bottom joint portion 14 are joined by the first lower side joint portion 17, and the lower end 12B of the side joint portion 12 and the second bottom joint portion. The upper edge of 16 is joined by a second lower side joint 18 (not shown).

[Second Modification]
In the pouch 1A-2 (1-2) of the second modification shown in FIG. 12, the first bottom joint portion 14 and the second bottom joint portion 16 (not shown) are provided at the lower end 12B of the side joint portion 12. It is not continuously provided, but is provided continuously to the inner edge 12C (inner seal line) of the side joint portion 12.

[Third Modification]
In the above embodiment, the first bottom joint portion 14 and the second bottom joint portion 16 have a linear shape, but are not limited thereto. In the pouch 1A-3 (1-3) of the third modified example shown in FIG. 13, the first bottom joint portion 14 has an arc shape that is convex toward the first fold line L1 and outward in the lateral direction D2. Is becoming The second bottom joint portion 16 has an arc shape that is convex toward the second polygonal line L2 and outward in the lateral direction D2.

[Fourth Modification]
In the pouch 1A-4 (1-4) of the fourth modified example shown in FIG. 14, the first bottom joint portion 14 and the second bottom joint portion 16 are directed upward and inward in the lateral direction D2. It has a convex arc shape.

[Fifth Modification]
In the pouch 1A-5 (1-5) of the fifth modified example shown in FIG. 15, the first bottom joint portion 14 and the second bottom joint portion 16 have a zigzag shape in which bending is repeated.

[Sixth Modification]
In the above-mentioned embodiment and each modification, although the example where the 1st bottom part joint part 14 and the 2nd bottom part joint part 16 were linear was shown, it is not limited to this. The 1st bottom joint part 14 and the 2nd bottom joint part 16 may be planar, for example, in the pouch 1A-6 (1-6) of the 6th modification shown in Drawing 16, the 1st bottom joint part. 14 and the second bottom joint 16 may have a triangular shape. When the first bottom joint portion 14 and the second bottom joint portion 16 are planar, the first bottom joint portion 14 may be connected to the first lower side joint portion 17, or the second bottom joint portion 16. May be connected to the second lower side joint portion 18.

[Other modifications]
As exemplified in each of the modified examples, the linear shape of the first bottom joint portion 14 and the second bottom joint portion 16 is not limited to a straight line shape, and may be a curved line shape or a combination of a straight line and a curved line. The curve may be a combination of a plurality of types of curves. When the first bottom joint portion 14 and the second bottom joint portion 16 are linear, they are not limited to have the same width and may not have the same width. The first bottom joint portion 14 does not have to extend to the first broken line L1. The second bottom joint portion 16 does not have to extend to the second polygonal line L2.

The shapes of the front surface 2, the back surface 3, and the bottom surface 4 corresponding to the housing portion 5 are not limited to the substantially hexagonal shape, and may be a heptagonal shape, an octagonal shape, or a shape including a curved line.
In the above-described embodiment, after forming the housing portion 5, the first lower corner portion 71 and the second lower corner portion 72 are cut and removed to improve the appearance of the entire pouch 1 and prevent damage (first lower side joining). The lower end portions of the portion 17 and the second lower side joint portion 18 easily become edges). For example, in the above-mentioned embodiment and each modification, the pouch 1 may have a contour along the outer seal line of the first bottom joint portion 14 and the outer seal line of the second bottom joint portion 16. .. As described above, the present invention also includes a configuration in which the first lower corner portion 71 and the second lower corner portion 72 do not exist.

1, 1A, 1B, 1C Pouch 2 Front surface 3 Back surface 4 Bottom surface 5 Housing portion 6 Film 11 Side portion 12 Side joint portion 12B Lower end 14 First bottom joint portion 16 Second bottom joint portion 14B Lower end 16B Lower end 17 First lower side Part joining part 18 Second lower side joining part 20 Surface sheet 21 First surface portion 22 Second surface portion 30 Back sheet 31 First back surface portion 32 Second back surface portion 40 Bottom sheet 41 First bottom surface portion 42 Second bottom surface portion 43 Grounding Surface Part 44 Non-Grounding Surface Part 61 Base Material Layer 62 Metal Foil Layer 63 Sealant Layer D2 Lateral Direction L1 First Broken Line L2 Second Broken Line

Claims (6)

A pouch that is composed of a single sheet of film that can be heated by electromagnetic induction, and that has a front surface, a back surface, a bottom surface, and a housing section.
The front surface and the bottom surface are continuously provided via a first broken line,
The back surface and the bottom surface are continuously provided via a second broken line,
The bottom surface is divided into a first bottom surface portion including the first broken line and a second bottom surface portion including the second broken line,
The front surface is divided into a first surface portion facing the back surface and a second surface portion facing the first bottom surface portion of the bottom surface,
The back surface is divided into a first back surface portion facing the front surface and a second back surface portion facing the second bottom surface portion of the bottom surface,
The first front surface portion of the front surface and the first back surface portion of the back surface are joined by a pair of side joint portions that join both side portions of the first front surface portion and both side portions of the first back surface portion, respectively. And
The second surface portion of the surface and the first bottom surface portion of the bottom surface extend in a direction from the side joint portion toward the first fold line and extend inward in the lateral direction of the pouch. Are joined by the first bottom joint,
The second back surface portion of the back surface and the second bottom surface portion of the bottom surface extend in a direction from the side joint portion to the second fold line and extend inward in the lateral direction of the pouch. Is joined by the second bottom joint,
A pouch in which the lower ends of the pair of first bottom joints are separated and the lower ends of the pair of second bottom joints are separated. A pouch that is composed of a single sheet of film that can be heated by electromagnetic induction, and that has a front surface, a back surface, a bottom surface, and a housing section.
The front surface and the bottom surface are continuously provided via a first broken line,
The back surface and the bottom surface are continuously provided via a second broken line,
The bottom surface is divided into a first bottom surface portion including the first broken line and a second bottom surface portion including the second broken line,
The front surface is divided into a first surface portion facing the back surface and a second surface portion facing the first bottom surface portion of the bottom surface,
The back surface is divided into a first back surface portion facing the front surface and a second back surface portion facing the second bottom surface portion of the bottom surface,
The first front surface portion of the front surface and the first back surface portion of the back surface are joined by a pair of side joining portions that join both side portions of the first front surface portion and both side portions of the first back surface portion, respectively. And
The second surface portion of the surface and the first bottom surface portion of the bottom surface extend in a direction from the side joint portion toward the first fold line and extend inward in the lateral direction of the pouch. Is joined by the first bottom joint,
The second back surface portion of the back surface and the second bottom surface portion of the bottom surface extend in a direction from the side joint portion to the second fold line, and extend inward in the lateral direction of the pouch. Is joined by the second bottom joint,
The pouch, wherein the bottom surface has a ground surface portion that does not include the first bottom joint portion and the second bottom joint portion in a lateral center portion of the pouch. A non-ground plane part including the first bottom joint part and the second bottom joint part, laterally outward of the ground plane part,
The non-grounded surface portion has a shape in which the first bottom joint portion and the second bottom joint portion do not substantially contact the mounting surface when the ground surface portion is mounted on the mounting surface.
The pouch according to claim 2. The upper part of the housing is sealed or open,
The pouch according to claim 2 or 3. The film is a laminate in which at least a base material layer, a metal foil layer, and a sealant layer are laminated in this order,
The pouch according to any one of claims 1 to 4. The second surface portion of the surface and the first bottom surface portion of the bottom surface are joined by the first bottom joint portion and the second surface portion of the second surface portion located below the side joint portion. Joined by a pair of first lower side joints respectively joining both side portions and both side portions of the first bottom surface portion,
The second back surface portion of the back surface and the second bottom surface portion of the bottom surface are joined by a second bottom joint portion, and both sides of the second back surface portion located below the side joint portion. Part and both side parts of the second bottom surface part are joined by a pair of second lower side joining parts, respectively.
The pouch according to any one of claims 1 to 5.

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