JP2002000450A - Retort pouch stand for microwave oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a retort pouch stand which can heat and cook in a microwave oven while preventing itself from tumbling. SOLUTION: The trunk of the retort pouch has front and back, each forms square. At the bottom part of the front and the back, the bottom face is inserted by folding as it forms a reversed V letter. The front, back, and the bottom face are heat-sealed at each edge, and form an upper heat seal part, a trunk heat seal part, and a bottom heat seal part. When the inside of the stand is filled, the bottom expands front and rear and makes this stand self-standing. As for the front and the back, the ratio of the height to the width is less than 1, which is a characteristic of the retort pouch. At the lower edges of both sides of the bottom heat seal part, a trimming part which has a gradation from 1 mm to 4 mm is cut off. This cut is done with a seal pattern whose form is like a bottom of a ship, from the inclination standing part to the edges of the both sides.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a standing and stable retort stand pouch for a microwave oven which can be heated and cooked in a microwave oven.

[0002]

2. Description of the Related Art Conventionally, a container called a retort stand pouch is generally used as a container for retort food for a microwave oven, but this retort stand pouch has a flat shape in a bag-formed state. When the contents are filled, the whole becomes a crushed vertically long cylindrical shape, and the bottom part spreads out in a boat shape, so that the contents can be self-supported by the weight of the contents. And this retort stand pouch is sold as it is.To actually cook the food in the container, the retort stand pouch itself is heated and cooked in a microwave oven, and then a part of the retort stand pouch is cut open. The contents of the food were transferred to tableware and the like.

[0003]

However, when a conventional retort stand pouch is used in a microwave oven,
They did not always fully respond to the convenience of consumer use.
Because the packaging material of the retort stand pouch is made of a flexible material, it is not self-sufficient but strong enough, and the retort stand pouch after the heat treatment is particularly flexible. It becomes high, lacks independence stability, and there is a danger of rolling over in a microwave oven,
There is a problem that it is dangerous to heat the retort stand pouch in a microwave oven as it is.

Accordingly, the present invention has been studied to solve the above problems, and as a result, a retort stand that can be held in a standing state so that a retort stand pouch during cooking and heating does not fall down in a microwave oven. This led to the development of a stand pouch shape. Accordingly, an object of the present invention is to provide a retort stand pouch for a microwave oven that can heat and cook without falling down in a microwave oven.

[0005]

In order to achieve the above object, a retort stand pouch according to the present invention is formed by folding a bottom face into an inverted V-shape at the bottom of a square front and rear faces forming a body. The front surface, the rear surface, and the bottom surface are heat-sealed at respective peripheral edges to form a top heat seal portion, a body heat seal portion, and a bottom heat seal portion. A stand pouch for a microwave oven, wherein a ratio of height and width (height / width) of the front surface and the rear surface is 1 or less.

Further, a trimming portion having a step in a range of 1 to 4 mm is cut from a lower end portion on both sides of the bottom heat seal portion to an end portion on both sides from an inclined rising portion of a boat bottom-shaped seal pattern. I have.

[0007] According to the present invention, it is possible to obtain a retort stand pouch with high self-standing stability, which can be cooked without falling down in a microwave oven.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a retort stand pouch for a microwave oven according to the present invention will be described with reference to the drawings, and the same or similar parts are denoted by the same reference numerals throughout the several drawings. Is attached.

The film used for producing the retort stand pouch for a microwave oven according to the present invention is mainly a laminated plastic film. For example, it has a structure in which a sealant layer is laminated on a base film. The base film and the sealant layer may each be constituted by a single film or a resin layer, but may also be constituted by a laminate such as a laminated film.

In any case, it is used for heating the contents in a microwave oven, and preferably has a heat resistance of about 100 ° C., a hot water resistance, etc., depending on the kind of the contents. Those that perform boil treatment or retort treatment (pressurized heat sterilization treatment) after filling the contents even with ordinary food packaging bags have the above performance, and any laminated film used for these applications Can be used.

Specifically, as the base film, a biaxially stretched nylon film (ON film), a biaxially stretched polyethylene terephthalate film (PET film),
A biaxially stretched polypropylene film (OPP film) or the like can be suitably used because of its excellent properties such as tensile strength and heat resistance and workability, and a single or laminated film thereof can be used.

The sealant layer (thermo-adhesive resin layer) may be made of a polypropylene resin, a high-density polyethylene resin, a medium-density polyethylene resin, or a linear low-density polyethylene resin, a low-density polyethylene,
An α-olefin copolymer resin, an ethylene-vinyl acetate copolymer resin, an ionomer, and the like can also be used, and a single substance or a mixture thereof can be used. However,
Among them, polypropylene resin is particularly preferably used because it has excellent overall performance such as heat resistance, thermal adhesion, oil resistance, and low odor.

As a method of laminating the sealant layer on the base film, a conventionally known method can be used. For example, the resin of the sealant layer is previously formed into a film by an inflation molding method, and this is formed into a base material. The film may be laminated by being laminated by a dry lamination method or an extrusion lamination method, or may be laminated by extruding and coating a resin of a sealant layer on a base film surface. However, in order to increase the adhesive strength between the base film and the sealant layer and the heat resistance of the bonded portion, it is preferable to laminate by a dry lamination method using a two-component curable adhesive such as polyurethane.

The retort stand pouch for a microwave oven according to the present invention can be manufactured in the form of a standing pouch by laminating the above-mentioned laminated film into a standing pouch. It can be produced using a bag making machine.

FIG. 1 is a schematic front view showing a configuration of an embodiment of a retort stand pouch for a microwave oven according to the present invention. Retort stand pouch A for microwave oven
Is formed in a gusset form in which a body is formed by heat-sealing both side edges of a wall film having two surfaces, a front surface 1 and a rear surface 2, with a body heat seal portion 4, and a bottom portion 3 is formed by folding the film inward. The bottom film notch 5 is formed at the edge near the lower end on both sides of the folded and folded bottom film.
The bottom heat seal portion 6 is heat sealed with a boat bottom seal pattern to form a bag in a standing pouch format. After filling the contents, the upper end is sealed to form a top heat seal portion 7.

Further, the ratio of the height to the width (height / width) of the front surface 1 and the rear surface 2 of the body, which is the main feature of the retort stand pouch for a microwave oven of the present invention, is made smaller than 1. That is,
By using a shape with a width larger than the height, the standing pouch for the microwave oven containing the contents can be used in the microwave oven in a stable state without falling over compared to the shape with the height larger than the width. Can be.

Accordingly, the height and the outer dimensions of the folded portion of the bottom film of the bottom portion 3 of the standing pouch A for a microwave oven are determined by the ratio of the height to the width (height / width) of the front surface 1 and the rear surface 2 of the body portion. If the condition is smaller, it can be appropriately determined according to the size of the stored contents. However, since the maximum of this external dimension is limited by the size of the storage part of the microwave oven used and the diameter of the rotating tray,
We need to match this. A tray for a microwave oven for home use usually has a diameter of about 280 mm, and thus has a width of 28 mm.
It is preferable to set it to 0 mm or less.

The retort stand pouch B for a microwave oven shown in FIG. 2 is different from the retort stand pouch A for a microwave oven shown in FIG. The trimming portion 8 is cut so as to be slightly inclined (about 1 to 4 mm in height at both ends) from the rising portion of the inclined portion of the bottom seal pattern to both ends.

With this configuration, the lower end portions on both sides of the retort stand pouch B for a microwave oven are cut so as to have a slight inclination, so that when the contents are stored and the bottom film is spread, The legs on the outer periphery of the bottom 3 are perfectly in contact with the flat tray surface all around,
Independence and fixability are further improved.

[0020]

Embodiments of the present invention will be described below in detail. However, the present invention is not limited to this embodiment.

For heating food, a retort stand pouch B for a microwave oven having the structure shown in FIG.
The laminated film used for bag making is applied to the base film with a thickness of 12
μm PET film and a thickness of 5 for the sealant layer.
Using a non-stretched polypropylene film of 0 μm, the two were bonded together by a dry lamination method using a polyurethane-based two-component curable adhesive. The laminated film was used in common for the front and rear wall films and the bottom film of the retort stand pouch B for a microwave oven to prepare a retort stand pouch B for a microwave oven having the following dimensions.

The outer dimensions of the bag are 120 mm in length and 18 in width.
0 mm. Then, the folding height of the bottom film was set to 50 mm, the seal pattern of the bottom heat seal portion 6 was formed so that the seal width of the parallel portion at the bottom center was 7 mm, and the rising angle of the inclined portions on both sides was 45 °. . Also, the trimming portions 8 at the lower ends on both sides of the retort stand pouch B for a microwave oven are straight lines inclined from the rising portions on both sides of the bottom shape seal pattern to both ends of the bag so that the height becomes 2 mm at the ends. It was cut out and provided. The seal pattern of the body heat seal portions 4 on both sides had a seal width of 8 mm.

A food for retort was stored as a content in the retort stand pouch B for microwave oven, and an upper opening was sealed to form a top heat seal portion 7.

When actually cooking by heating in a microwave oven,
As shown in FIG. 3, as a means for discharging gas and steam, a part of the top heat seal portion 7 was cut to provide an outlet 9, and then placed in a microwave oven of 500 W and heated for 3 minutes. However, the retort stand pouch B for a microwave oven has inflated, but excess air and steam are smoothly discharged from a part cut, without breaking the bag.
In addition, good heating was possible without overturning or displacement.

[0025]

As is apparent from the above description, according to the present invention, the contents can be stably stored, the independence and the fixability on the tray of the microwave oven are good, and the contents fall during heating. It is possible to provide a retort stand pouch for a microwave oven, which can be used safely without moving or moving, and which is inexpensive and suitable for use in retort foods.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a configuration of an embodiment of a retort stand pouch for a microwave oven according to the present invention.

FIG. 2 is a schematic front view showing the configuration of another embodiment of the retort stand pouch for a microwave oven according to the present invention.

FIG. 3 is a perspective view showing a state in which the retort stand pouch for a microwave oven of the present invention shown in FIG. 2 is used in a microwave oven.

[Explanation of symbols]

 Reference Signs List A retort stand pouch for microwave oven B retort stand pouch for microwave oven 1 front 2 back 3 bottom 4 body heat seal section 5 bottom film cutout section 6 bottom heat seal section 7 top heat seal section 8 trimming section 9 discharge port

Claims (2)

[Claims] 1. A bottom face is folded into an inverted V-shape and inserted into the bottom of a square front face and a rear face forming a body, and the front face, the rear face, and the bottom face are heat-sealed at respective peripheral edges. A stand pouch in which a top heat seal portion, a body heat seal portion, and a bottom heat seal portion are formed, and the bottom portion can be extended and retracted by the filled contents so as to be self-supporting, wherein the height and width of the front surface and the rear surface Ratio (height / width) is 1
A retort stand pouch for a microwave oven comprising: 2. A trimming part having a step of 1 to 4 mm in a range from 1 to 4 mm from the inclined rising part of the boat bottom-shaped seal pattern to both ends at the lower end on both sides of the bottom heat seal part. The retort stand pouch for a microwave oven according to claim 1.