JP2018127257A - Pouch for microwave oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouch for a microwave oven in which a film is softened during heating and cooking, the distance between an opening position and a content can be made near even in a case that a bottom gusset part is widened, and the content can be easily taken out.SOLUTION: Provided is a pouch for a microwave oven which comprises a steam-passing mechanism 10 and includes a bottom gusset part 9. The pouch includes a front surface film 1, a rear surface film 2, and a bottom surface film 3 which is positioned between the front surface film 1 and the rear surface film 2, and is provided with opening means 18 arranged below the steam-passing mechanism 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a microwave oven pouch that is cooked using a microwave oven.

  Conventionally, food can be cooked with a microwave while the food is contained in a container, and has the effect of steaming the food contained by the steam generated during cooking, and the steam is partially peeled off by the internal steam pressure. There is known a packaging bag that can release (steam) the odor (see Patent Document 1).

JP2015-120550A

  The pouch described in Patent Document 1 is a standing type pouch. However, in the case of a standing type pouch, the film constituting the pouch softens when cooked and the bottom gusset portion expands, so that the contents are lowered. It may be difficult to take out the contents.

  Then, this invention makes it a subject to provide the pouch which can solve such a subject.

  In order to solve the above-mentioned problem, the present invention is a pouch having a steaming mechanism and having a bottom gusset portion, and is a surface film, a back film, and a bottom film located between the surface film and the back film A microwave oven pouch is provided, wherein opening means is provided below the steaming mechanism.

  Moreover, the microwave oven pouch of the present invention may have a side seal part that joins the front film and the back film, and the side seal part may be provided with the opening means.

  In the microwave oven pouch according to the present invention, the side seal portion below the steaming mechanism includes a first portion and a second portion, and the seal width of the second portion is the seal width of the first portion. Larger, the opening means may be provided in the second portion.

  Further, the microwave oven pouch of the present invention is composed of a laminate in which at least a first base material layer, a second base material layer, and a sealant layer are sequentially laminated, and the first base material layer is made of polyethylene terephthalate. Yes, the second base material layer may be polyamide or polyester, and the second base material layer may be extended from one side edge toward the other side edge.

  According to the present invention, since the distance between the opening position and the contents can be reduced, the contents can be easily taken out.

It is a front view which shows the pouch for microwave ovens which concerns on one Embodiment of this invention. It is an exploded view which shows the film which comprises the pouch for microwave ovens concerning one Embodiment of this invention. It is a figure which shows the layer structure of the film which comprises the pouch for microwave ovens. It is a figure which shows the modification of the layer structure of the film which comprises the pouch for microwave ovens. It is a front view which shows the modification of the pouch for microwave ovens. It is a front view which shows the modification of the pouch for microwave ovens. It is a front view which shows the modification of the pouch for microwave ovens. It is a front view which shows the modification of the pouch for microwave ovens. It is a front view which shows the modification of the pouch for microwave ovens. It is a figure which shows the modification of the layer structure of the film which comprises the pouch for microwave ovens.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
<Embodiment>
FIG. 1 is a diagram showing a microwave oven pouch according to an embodiment of the present invention. FIG. 1A is a front view. FIG. 2 is an exploded view showing a film constituting the microwave pouch according to the embodiment of the present invention. The microwave oven pouch according to the embodiment shown in FIG. 1 shows a pouch in a state before the contents are filled (a state where the contents are not filled). The pouch according to the embodiment is rectangular in a front view and has a bottom gusset portion 9. In the present embodiment, the rectangle is a concept including not only a rectangle having four right corners but also a shape in which the four corners of the rectangle are chamfered to form an outwardly convex arc shape. In the present invention, the microwave oven pouch is not limited to the microwave oven pouch in a state where the contents are not filled, but also includes a microwave oven pouch in which the contents are filled.

(Each film)
As shown in FIG. 2, the pouch for the microwave oven according to the embodiment is composed of three films of a substantially rectangular surface film 1, a back film 2 having the same shape as the surface film 1, and a substantially rectangular bottom film 3. It is configured. The microwave oven pouch of the present embodiment is formed by sealing (heat-sealing) three films of a front film 1, a back film 2, and a bottom film 3 at predetermined locations.

  As shown in FIG. 2, the bottom film 3 is folded in two, and is divided into a first portion 3f and a second portion 3g with the folding portion 3a as a boundary. The bottom film 3 is provided with four semicircular arc-shaped second cutout portions 3b, 3c, 3d, and 3e so as to cut out the side edges, the second cutout portions 3b and 3c, and the second cutout portions. The notches 3d and 3e are provided at positions corresponding to when the two are folded. A second bottom seal portion 6b described later is formed through the second cutout portions 3b to 3e. Moreover, when cooking using a microwave oven, from the viewpoint of stabilizing independence, the distance L3 from the folding part 3a to the lower edge 17 of the pouch in the direction orthogonal to the folding part 3a is preferably 35 mm or more. .

(Each seal part)
As shown in FIG. 1, the microwave oven pouch according to the embodiment includes a side seal portion 5 a and a bottom seal portion, and an opening 15 is formed in the upper portion 4. The side seal portion 5a is obtained by sealing and joining the front film 1 and the back film 2. The side seal part 5a on the side close to the steaming mechanism 10 (the side in contact with the steaming mechanism 10 in FIG. 1) is referred to as a first side seal part 5aa, and the side seal part on the side far from the steaming mechanism 10 5a is also referred to as a second side seal portion 5ab. As shown in FIG. 1, the first side seal portion 5aa may have a seal width W2 above the upper end of the steaming mechanism 10 larger than a seal width W1 below the lower end of the steaming mechanism 10. As shown in FIG. 1, the second side seal portion 5ab may have a seal width W5 above the lower end of the steaming mechanism 10 larger than a seal width W4 below the lower end of the steaming mechanism 10. . The seal width W1 and the seal width W4 can be 5 mm or more and 8 mm or less, and the seal width W2 and the seal width W5 can be 8 mm or more and 15 mm or less. The seal width is a width in a direction orthogonal to the direction in which the seal portion extends.

  The bottom seal portion is a seal portion formed below the folding portion 3a, and includes a first bottom seal portion 6a and a second bottom seal portion 6b. The first bottom seal portion 6a is obtained by sealing the first portion 3f of the surface film 1 and the bottom film 3, and the second portion 3g of the back film 2 and the bottom film 3. The second bottom seal portion 6b is obtained by sealing the front film 1 and the back film 2. As shown in FIG. 1, a second unsealed portion 40 that reaches the outer edge of the pouch may be provided in the second side seal portion 5ab. The second unsealed portion 40 is a portion where the front film 1 and the back film 2 are not sealed, and faces the unsealed portion 10a and the accommodating portion 11 described later. By providing the second unsealed portion 40, when the pouch is manufactured, the unsealed portion 10a can be reliably formed and the portion to be discarded can be reduced.

(Bottom gusset part)
A first pleat portion is formed by the first portion 3f of the bottom film 3 and the portion corresponding to the first portion 3f of the bottom film 3 of the surface film 1, and the second portion 3g of the bottom film 3 and the back surface A second pleat portion is formed by a portion corresponding to the second portion 3 g of the bottom film 3 of the film 2. The bottom gusset portion 9 is formed by the first fold portion and the second fold portion. In the front view of FIG. 1, the first fold portion is visible below the folding portion 3 a.

(Container)
After the contents are accommodated through the opening 15, an upper seal portion is formed on the upper seal planned portion (above the dashed line) indicated by 4a in FIG. 1, and the microwave oven pouch is sealed. . The upper seal portion is formed from the first side seal portion 5aa to the second side seal portion 5ab. The accommodating portion 11 is defined by an inner edge of the side seal portion 5a, an inner edge of the first bottom seal portion 6a, an inner edge of the upper seal portion, and an inner edge of an isolation seal portion 10b described later.

(Contents)
The contents contain moisture and oil. Examples of the contents include retort foods, frozen foods, and refrigerated foods. Examples of the food include curry, rice cake, yakisoba, side dish, and fish. In these contents, the moisture evaporates with heating and the pressure of the pouch container 11 is increased, so that a steam venting function for releasing the steam in the container 11 to the outside is required.

(Details of film)
FIG. 3 is a diagram showing a layer configuration of a film constituting the microwave oven pouch. The front surface, the back surface, and the bottom surface can be constituted by the laminated film 30. The laminated film 30 is a laminated body including a base material layer 31 and a sealant layer 34 from at least the outside. In the embodiment, as shown in FIG. 3, in the laminated film 30, a base material layer 31, a printing layer 32, another layer 33, and a sealant layer 34 are laminated in order from the outside. The print layer 32 and the other layers 33 are not essential. The sealant layer 34 is a layer constituting the innermost surface of the pouch. Microwave pouches are required to be resistant to heat. For this reason, the base material layer 31 of the embodiment is made of a material having heat resistance. For example, as the material of the base material layer 31, a polyester film such as polyethylene terephthalate, a polyamide film such as nylon, a polypropylene film, or the like can be used. The thickness is about 10 μm to 50 μm. The base material layer 31 is preferably biaxially stretched.

  Moreover, the laminated film may include a plurality of base material layers. FIG. 4 is a diagram showing a layer configuration of a laminated film constituting a microwave oven pouch when a plurality of base material layers are provided. In FIG. 4, the same parts as those in FIG. In the modification of FIG. 4, the 1st base material layer 31a and the 2nd base material layer 31b are provided as a some base material layer. As the 1st base material layer 31a and the 2nd base material layer 31b, it can employ suitably combining from the above-mentioned material. In the present embodiment, polyethylene terephthalate is used as the first base material layer 31a that is the outermost layer, and polyamide is used as the second base material layer 31b that is the inner layer (on the sealant layer 34 side). The second base material layer 31b extends from one side edge toward the other side edge. As the second base material layer 31b, for example, “Emblem (registered trademark) NC” manufactured by Unitika Co., Ltd. containing MXD (metaxylenediamine) excellent in barrier properties can be used. Further, as the second base material layer 31b, polyester such as “Emblet (registered trademark) PC” manufactured by Unitika Ltd. or “Embret (registered trademark) PCBC” manufactured by Unitika Ltd. may be used. The first base material layer 31a and the second base material layer 31b can be laminated using, for example, a dry laminating method.

  The print layer 32 is provided for displaying the product content, imparting aesthetics, or displaying a cut portion. The printing layer 32 is formed by printing ink containing a binder and a pigment. The sealant layer 34 is disposed on the side of the laminated films 30 and 30a that is closest to the inside of the container when the pouch is made. As a material of the sealant layer 34, polyolefin resin such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-propylene block copolymer, and the like can be adopted. The thickness of the sealant layer 34 is not less than 30 μm and not more than 100 μm. The sealant layer 34 is preferably unstretched.

  The laminated films 30 and 30a may include another layer 33. The other layer 33 may be provided outside the base material layer 31, or may be provided between the base material layer 31 and the sealant layer 34 as shown in FIG. 3. As the other layer 33, an appropriate layer is selected according to required functions such as water vapor and other gas barrier properties and light shielding properties. For example, when the other layer is a gas barrier layer, a vapor deposition layer of a metal such as aluminum, a metal oxide such as aluminum oxide, or an inorganic oxide such as silicon oxide is provided. The vapor deposition layer may be laminated on the base material layer 31 or may be vapor deposited on the sealant layer 34. Alternatively, a metal foil such as aluminum may be provided. In addition, a resin layer having a gas barrier property such as an ethylene-vinyl alcohol copolymer (EVOH), a polyvinylidene chloride resin (PVDC), and an aromatic polyamide such as nylon MXD6 may be provided. Each layer can be laminated using a dry lamination method, a melt extrusion method, or the like.

(Steaming mechanism)
As shown in FIG. 1, in the microwave oven pouch, a steaming mechanism 10 having a steam release function is provided on the side portion 5. The steaming mechanism 10 includes an unsealed portion 10a for allowing steam to escape and an isolation seal portion 10b for isolating the unsealed portion 10a and the accommodating portion 11 from each other. The steaming mechanism 10 can be provided between the upper edge 16 of the pouch and the intermediate point 25. The intermediate point 25 is an intermediate point between the upper edge 16 of the pouch and the lower edge 17 of the pouch in the direction orthogonal to the folding portion 3a.

  The unsealed portion 10a is formed so as to reach the side edge of the pouch, and an opening 21 is formed between the front film 1 and the back film 2 at the side edge portion of the pouch. In this embodiment, the unsealed part 10a is rectangular shape, and has the 1st edge part 22, the 2nd edge part 23, and the 3rd edge part 24 other than the side edge in which the opening 21 exists. The unsealed portion 10a is provided to communicate with the accommodating portion 11 and to release the vapor in the pouch to the outside when the pressure in the pouch is increased by the vapor generated with heating by the microwave oven. The unsealed part 10a protrudes from the side edge of the pouch to the accommodating part 11 side. The unsealed part 10a of this embodiment consists of the surface film 1 and the back film 2 which were piled up which are not heat-sealed. Accordingly, an opening 21 defined by the edge of the laminated film 30 is formed in the unsealed portion 10a.

  The isolation seal portion 10b is a heat-sealed portion for isolating the unsealed portion 10a and the accommodating portion 11, and in this embodiment, the first side seal portion 5aa below the lower end of the steaming mechanism 10 The first side seal portion 5aa above the upper end of the steaming mechanism 10 is connected. The unsealed portion 10a is a portion where the front film 1 and the back film 2 are not sealed. The seal width W3 of the isolation seal portion 10b is smaller than the seal width W1 below the steaming mechanism 10 of the first side seal portion 5aa. The width W3 of the isolation seal part 10b can be 2.5 mm or more and 5 mm or less. The inner edge of the isolation seal portion 10b protrudes toward the accommodating portion 11 side, and the outer edge of the isolation seal portion 10b includes all of the third edge portion 24, a part of the first edge portion 22, and the second edge portion 23. It overlaps with a part. In the present embodiment, both the inner side edge of the first side seal part 5aa and the inner edge of the isolation seal part 10b are parallel to the third edge part 24 of the unsealed part 10a.

  In the example shown in FIG. 1, in the direction orthogonal to the direction in which the first side seal portion 5aa extends, the inner edge closest to the second side seal portion 5ab of the isolation seal portion 10b is below the lower end of the vaporizing mechanism 10. The distance L1 to the inner edge of the first side seal portion 5aa is the first side seal portion 5aa above the upper end of the steaming mechanism 10 from the inner edge closest to the second side seal portion 5ab in the isolation seal portion 10b. It is larger than the distance L2 to the inner edge. The distance L1 is preferably 3 mm or more and 15 mm or less, and more preferably 6 mm or more and 12 mm or less. By setting the distance L1 to 3 mm or more, it is possible to prevent the seal portion other than the isolation seal portion 10b from retreating from the seal, so that the steam can be stably discharged from the steaming mechanism 10. Moreover, the content can be easily filled by setting the distance L1 to 15 mm or less.

(Opening means)
As shown in FIG. 1, the opening means 18 is provided below the steaming mechanism 10 and above the folding part 3a. Although FIG. 1 shows an example in which the opening means 18 is provided in the first side seal portion 5aa and the second side seal portion 5ab, it may be provided in either one of the side seal portions 5a. . For example, the opening means 18 may be provided only in the second side seal portion 5ab. Since the area around the steaming mechanism 10 is hot immediately after heating in the microwave, the user can open it more safely. The opening means 18 is provided so as to be higher than the upper surface of the contents after the vapor has escaped.

  Moreover, in the example of FIG. 1, although the example which provides a notch so that the outer edge of the side part seal part 5a is notched is shown as the opening means 18, the opening means 18 may be a notch, It may be a group of scars penetrating part or all of the film. Alternatively, the opening means 18 may be a half-cut line extending from the first side seal portion 5aa toward the second side seal portion 5ab. The half-cut line may be a continuously extending line or an intermittently extending line. The half-cut line may be provided so as to extend from one side edge of the pouch to the other side edge.

(Function)
After the contents are filled in the accommodating portion 11 and sealed and sealed in the upper seal planned portion 4a, the contents are heated using a microwave oven. When the container 11 is heated and expanded by the steam, the isolation seal 10b is peeled off from the lower left side of FIG. When the isolation seal portion 10b is peeled off to the connection point between the first edge portion 22 and the 24th edge portion of the unsealed portion 10a, the accommodating portion 11 is connected to the outside, and the steam escapes to the outside. And it can open using the opening means 18 and can eat the contents. In the present embodiment, since the opening means 18 is provided below the steaming mechanism 10, the opening position and the upper surface of the contents are compared with the case where the opening means is provided above the steaming mechanism 10. And the content can be easily taken out.

<Modification>
(Side seal)
FIG. 5 is a front view showing a modification of the microwave oven pouch. Parts that perform the same functions as in FIG. In FIG. 5, the side seal portion 5a below the steaming mechanism 10 includes a first portion and a second portion, the seal width of the second portion is larger than that of the first portion, and an opening means is provided in the second portion. An example is shown.

  The first side seal portion 5aa below the steaming mechanism 10 includes a first portion 5aa1 and a second portion 5aa2 located above the first portion 5aa1, and the opening means 18 is provided in the second portion 5aa2. Is provided. The second portion 5aa2 is provided so as not to contact the steaming mechanism 10. The second portion 5aa2 is provided so that the inner edge of the second portion 5aa2 is not positioned closer to the second side seal portion 5ab than the inner edge of the isolation seal portion 10b closest to the second side seal portion 5ab. The seal width W6 of the second portion 5aa2 can be 8 mm or more and 15 mm or less.

  The second side seal portion 5ab below the steaming mechanism 10 includes a first portion 5ab1 and a second portion 5ab2 located above the first portion 5ab1, and the opening means 18 is provided in the second portion 5ab2. Is provided. The seal width W7 of the second portion 5ab2 can be 8 mm or greater and 15 mm or less. By providing the second part in the side seal part 5a and providing the opening means 18 in the second part, the microwave pouch after being cooked in the microwave can be opened more safely.

  FIG. 6 is a front view showing a modification of the microwave oven pouch. Parts that perform the same functions as those in FIGS. 1 and 5 are denoted by the same reference numerals and description thereof is omitted. Preferably, as shown in FIG. 6, in order to allow the steam to escape stably, the seal width W1 of the first side seal portion 5aa below the steaming mechanism 10 is constant, and only the second side seal portion 5ab. Are provided with a first portion 5ab1 and a second portion 5ab2, and an opening means 18 is provided in the second portion 5ab2. In the example shown in FIG. 6, an example is shown in which the second portion 5ab2 extends to the upper edge of the pouch.

(Second opening means)
FIG. 7 is a front view showing a modification of the microwave oven pouch. Parts that perform the same functions as in FIG. FIG. 7 shows an example in which the second opening means 14 is provided in addition to the opening means 18. As the 2nd opening means 14, the same thing as the opening means 18 can be used. The second opening means 14 is provided above the steaming mechanism 10. In FIG. 7, the second opening means 14 is provided on the first side seal portion 5aa and the second side seal portion 5ab, but may be provided on either one of the side seal portions 5a. For example, the second opening means 14 may be provided only in the second side seal portion 5ab. Since the area around the steaming mechanism 10 is hot immediately after heating in the microwave, the user can open it more safely.

(Modification of steaming mechanism)
As the steaming mechanism 10, the entire area of the unsealed portion 10 a may not be covered with the surface film 1 and the back film 2, and at least one of the surface film 1 and the back film 2 located in the unsealed portion 10 a. A cut or hole may be provided in a part.

  The unsealed portion 10a may be formed so as not to reach the side edge of the pouch. In this case, since the opening 21 is not formed in the side edge of the pouch, a cut or a hole is formed in the unsealed portion 10a. The When the unsealed portion 10a is formed so as not to reach the side edge of the pouch, the isolation seal portion 10b may be provided so as to be connected to the side seal portion 5a, or the side seal portion. It may be provided so as not to be connected to 5a.

  FIG. 8 is a front view showing a modification of the microwave oven pouch. Parts that perform the same functions as those in FIGS. 1 and 6 are denoted by the same reference numerals and description thereof is omitted. In the modification of FIG. 8, the steaming mechanism 10 is mainly different. In the modification of FIG. 8, the unsealed portion 10a is formed so as not to reach the edge of the pouch (side edge in the example of FIG. 8). And the isolation seal part 10b is provided so that it may be connected with the seal part (in the example of FIG. 8 side seal part 5a) for forming an accommodating part. In addition, a hole 10c is formed in the unsealed portion 10a. In the embodiment of FIG. 1, the width of the side seal portion 5 a is different between the upper side and the lower side of the steaming mechanism 10, but in the modified example of FIG. 8, the width of the side seal portion 5 a is from the upper edge 16. It is the same up to the folding part 3a.

  FIG. 9 is a front view showing another modification of the microwave oven pouch. Parts that perform the same functions as those in FIGS. 1 and 6 are denoted by the same reference numerals and description thereof is omitted. Also in the modification of FIG. 9, the steaming mechanism 10 is mainly different. In the modification of FIG. 9, the unsealed portion 10a is formed so as not to reach the edge of the pouch. However, unlike the modification of FIG. 8, the isolation seal portion 10b is provided so as not to be connected to the seal portion for forming the accommodating portion. In addition, a hole 10c is formed in the unsealed portion 10a. Also in the modified example of FIG. 9, the width of the side seal portion 5 a is the same from the upper edge 16 to the folding portion 3 a as in the modified example of FIG. 8.

  8 and 9, the shape of the hole 10 c is circular, but is not limited to a circular shape, and may be an arbitrary shape such as an ellipse, a triangle, a quadrangle, and other polygons. Further, in the modified examples of FIGS. 8 and 9, a cut may be formed instead of the hole 10c. 1 and 5-7, a circular hole such as the hole 10c, a hole having an arbitrary shape, or a notch having an arbitrary shape can be formed in the unsealed portion 10a. Examples of the shape of the cut include a cross shape, an I shape, and a U shape.

(Modification 2 of the steaming mechanism)
The steaming mechanism 10 may be a thermosoftening resin laminated between the base material layer 31 and the sealant layer 34. FIG. 10 is a diagram showing a layer structure of a film constituting a microwave oven pouch when a heat softening resin is used as the steaming mechanism 10. 10, parts identical to those in FIGS. 3 and 4 are given the same reference numerals, and descriptions thereof are omitted. In the modified example, as shown in FIG. 10, in the laminated film 30b, a base material layer 31, a printed layer 32, a thermosoftening resin layer 35, and a sealant layer 34 are laminated in order from the outside. The heat-softening resin layer 35 does not need to be provided on the entire surface, and may be provided on a portion necessary for the steaming mechanism 10.

  The thermosoftening resin used as the material of the thermosoftening resin layer 35 is an ethylene / vinyl acetate resin, a polyamide / nitrified cotton resin, or a polyamide / nitrified cotton / polyethylene WAX system having a softening temperature of 60 to 90 ° C. It consists of a thermoplastic resin such as a resin. The seal adhesive strength in the thermosoftening resin layer 35 is 700 g / 15 mm or more at room temperature, but when heated to 90 ° C. or more, it decreases to 300 g / 15 mm. Further, the thermosoftening resin layer 35 is formed by a pattern coating method using a thermoplastic resin as described above at a predetermined position on a plane so that the thickness falls within the range of 1 to 5 μm.

(Modified example of film structure)
In the said embodiment, although comprised with three films, the surface film 1, the back film 2, and the bottom film 3, you may comprise by two sheets or one film. For example, a pouch for a microwave oven may be configured by using a single film in which a surface film, a bottom film, and a back film are continuously provided, or a film in which a surface film, a back film, and a bottom film are continuously provided. You may form the microwave oven pouch using a total of two films.

DESCRIPTION OF SYMBOLS 1 ... Surface film 2 ... Back film 3 ... Bottom film 3a ... Folding part 3b-3e ... 2nd notch part 3f ... 1st part of bottom film 3g ... Bottom Second part of film 4... Upper part 4a... Upper seal scheduled part 5 .. side part 5a... Side part seal part 5aa .. first side part seal part 5ab. Seal portion 5aa1... First portion of first side seal portion 5aa2... Second portion of first side seal portion 5ab1... First portion of second side seal portion 5ab2. Second part of side seal part 6 ... Bottom 6a ... First bottom seal part 6b ... Second bottom seal part 9 ... Bottom gusset part 10 ... Steaming mechanism 10a ... Not yet Seal part 10b ... Isolation seal part 11 ... Storage part 14 ... Opening means (second opening Sealing means)
DESCRIPTION OF SYMBOLS 15 ... Opening part 16 ... Upper edge 17 ... Lower edge 18 ... Opening means 21 ... Opening 22 ... 1st edge part 23 ... 2nd edge part 24 ... 1st 3 edge part 25 ... midpoint 30, 30a, 30b ... laminated film 40 ... second unsealed part L1 ... from the inner edge closest to the second side seal part 5ab among the isolation seal parts 10b Distance from the lower end of the steaming mechanism 10 to the inner edge of the lower first side seal portion 5aa L2... From the inner edge closest to the second side seal portion 5ab of the isolation seal portion 10b to the upper end of the steaming mechanism 10 Distance from the upper edge of the first side seal portion 5aa to the inner edge L3: Distance from the folding portion 3a to the lower edge 17 of the pouch W1: First side seal below the lower end of the steaming mechanism 10 Seal width of the part 5aa W2... First side part above the upper end of the steaming mechanism 10 Seal width W3 of the seal portion W3 ... Seal width of the isolation seal portion 10b W4 ... Seal width of the second side seal portion 5ab below the lower end of the steaming mechanism 10 W5 ... of the steaming mechanism 10 Seal width of the second side seal portion 5ab above the lower end W6... Seal width of the second portion 5aa2 of the first side seal portion W7... Seal width of the second portion 5ab2 of the second side seal portion

Claims (4)

A pouch having a steaming mechanism and having a bottom gusset portion,
A front film, a back film, and a bottom film located between the front film and the back film,
A microwave oven pouch, wherein an opening means is provided below the steaming mechanism. Having a side seal part for joining the front film and the back film;
2. The microwave oven pouch according to claim 1, wherein the side seal portion is provided with the opening means. The side seal part below the steaming mechanism includes a first part and a second part,
The seal width of the second portion is greater than the seal width of the first portion;
The microwave oven pouch according to claim 2, wherein the opening means is provided in the second portion. The pouch is composed of a laminate in which at least a first base material layer, a second base material layer, and a sealant layer are sequentially laminated,
The first substrate layer is polyethylene terephthalate, the second substrate layer is polyamide or polyester,
The said 2nd base material layer is extended | stretched toward the other side edge from one side edge, The pouch for microwave ovens as described in any one of Claims 1-3 characterized by the above-mentioned.