JPH09207972A - Multi-sectional packaging body available for heating by microwave oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-sectional packaging body that is available for being treated by high-frequency heating with a microwave oven without peeling off the sealed parts. SOLUTION: In a plastic packaging body, a container body 1 is sealed up with an inner seal part 3 and has multi-sectional housing parts A, B that are divided with a middle seal part 7 and different kinds of cooked foods are housed separately in each of the housing parts A and B while a lid member is fixed by heat sealing to the surface of the flange of the container body. The heat seal is made by sealing executed at the easily peelable middle seal part 7, the inner seal part 3, and an outer seal part 4, and a groove 5 or an unsealed part is provided at a part between the inner seal part 3 and the outer seal part 4, and vapor vents 6 communicating with the groove 5 or the unsealed part and opened to the outside air are provided at one or more positions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microwave oven multi-divided package which can be easily cooked by heating in a microwave oven or the like.

[0002]

2. Description of the Related Art Recently, convenience stores have been selling foods that can be easily eaten by heat-treating cooked foods. These foods are usually immersed in hot water or a steamer, a microwave oven or the like when heat-treated, but the simplest method is a high-frequency heating method using a microwave oven. Generally, when heating food with a microwave oven, food is put into tableware or the food is wrapped with a wrap film. On the other hand, conventionally, a package in which foods such as hamburgers are packed and sealed in a deep-draw molded plastic sheet, and a package in which foods are sealed in a plastic container with a flange are distributed. Since these packages are sealed so as to completely block the outside air, if they are put in a microwave oven and heated as they are, they will burst due to the pressure of water vapor generated from the food. Therefore, in this case, it is necessary to take out the food from the package or cut a part of the package with a knife or the like in advance to form a steam escape port and then perform the heat treatment. However, it is troublesome to take out food from the package or cut a part of the package beforehand with a knife etc. to make a steam escape port and then perform heat treatment, and heat treatment in a microwave oven without any pretreatment. It was desired to be able to do it.

In order to solve these problems, a small hole for vapor escape port is made in the package in advance, and a seal is attached to the small hole with an adhesive agent whose adhesive strength is reduced by heat, A method has been proposed in which a part of the sealed portion of the package is set as a weak sealed portion, and the package is cleaved by the vapor pressure to serve as a steam escape port. However, if you have made a small hole in advance and attached a seal to that part,
Since the seal has a weak adhesive force, there is a problem that the seal is peeled off in a distribution process and the like, and it is difficult to provide a weak seal part in a part of the seal part. Also, at convenience stores, different types of food (for example, spaghetti and meat sauce, rice and curry) are usually stored in a single container for immediate consumption by the consumer, and can be stored in a microwave oven as is. It was sold warm. When different kinds of foods are stored in the same container as described above, there is a problem that spaghetti or rice is soaked in soup or the like and the taste is deteriorated. Therefore, in order to prevent the soups from soaking into the noodles and rice, there is also a product in which gelatin is mixed with meat sauce or curry so as to be solidified in a chilled state, but there is a problem that the taste is significantly deteriorated. For this reason,
It is possible to heat different kinds of food separately and then put them together, but there was a problem that it was troublesome and took a lot of time.
Moreover, since the liquid containing tofu, the soup stock, etc. were both hardened with gelatin in the commercialized tofu set, it was not like a waxwork and almost appetizing.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a multi-divided package which can be cooked in a microwave oven at high frequency without peeling off a seal portion.

[0005]

In view of the above, the present inventors have previously proposed a Japanese Patent Application Laid-Open No. 7-257662, in which an inner seal portion and an outer seal portion are double-sealed. The present invention is improved by providing a groove portion or a non-sealing portion between the outer sealing portion and the outer sealing portion, and improving the food packaging body provided with one or more steam discharge ports connected to the groove portion or the non-sealing portion and connected to the outside air. It has been completed. That is, the present invention, the container body is hermetically sealed by the inner seal portion, has a multi-chamber storage portion divided by the middle seal portion, each storage portion separately stored cooked foods of different types, A plastic packaging body obtained by heat-sealing a lid material on a flange surface, wherein the heat-sealing has an easy-peel middle seal portion, an inner seal portion, and an outer seal portion, and the inner seal portion. A multi-divided packaging for microwave oven cooking, characterized in that a groove portion or a non-sealing portion is provided between the outer sealing portion and the outer sealing portion, and at least one steam outlet connected to the groove portion or the non-sealing portion is connected to the outside air. It is the body.

[0006]

DETAILED DESCRIPTION OF THE INVENTION The configuration of the present invention will be described below with reference to FIGS. 1 and 2 showing one embodiment. The container body 1 has a flange portion, and a continuous groove portion 5 is provided in the flange portion. The groove portion 5 has an inner seal portion 3 inside and an outer seal portion 4 outside. Inside the seal part, the storage part is divided into two chambers A and B with the middle seal part 7 as a boundary. Further, one or more vapor discharge ports 6 are provided so as to be connected to the outside air from the groove portion 5 toward the outside. The size of the groove 5 is not particularly limited as long as steam is discharged, and therefore the groove may be a non-sealed part which is not sealed. In order to facilitate the cleavage of the inner seal portion by the vapor pressure and to require an appropriate seal strength, the seal width of the inner seal portion 3 and the middle seal portion is smaller than the seal width of the outer seal portion 4, and is 1 to 5 mm. Preferably there is. The inner and outer sealing portions of the container body 1 are heat-sealed by the lid body 2, and the strength of the seal is such that it is easily cleaved by the vapor pressure, and the heat-sealing is easy peeling even at room temperature. ing. FIG. 3 shows the container body 1 in which the storage portion is divided into three chambers A, B, and C by the middle seal portion 7, and the groove portion 5 and the inner seal portion 4 and the inner seal portion 4 are the same as the container body described above. It is provided between the seal part 3 and it and serves as a discharge path.

Here, the form of the plan view of the container body 1 may be any of a triangular shape, a quadrangular shape, an elliptical shape and a circular shape.
Also, the container body may be obtained by vacuum forming or pressure forming of a plastic film or sheet,
It may be obtained by injection molding. The plastic film used for the container body is polypropylene (P
Although it may be a single layer such as P), a multilayer film using a saponified ethylene-vinyl acetate copolymer (EVOH) having a good barrier property is suitable. For example PP / EVOH
/ PP, PP / KNy / EVA, PP / EVOH / Ny
/ PE, PP / Ny / EVOH / Ny / ION, Ny /
EVOH / LLDPE, Ny / EVOH / EVA, EV
A multilayer film such as OH / Ny / PE can be mentioned, and the layer on the right side is a sealant layer. Here, KNy represents vinylidene chloride-coated nylon, EVA represents ethylene-vinyl acetate copolymer, Ny represents nylon, and PE represents polyethylene. The lid body has at least a base material layer made of an aluminum foil, a plastic film such as PP or the like having excellent barrier properties and a sealant layer, and the sealant layer is easily peeled off when heat-sealed with the sealant layer of the container body. Must be something.

In order to form the food package of the present invention using this container body 1, the container body is filled with food and the lid body is provided with a middle seal portion, an inner seal portion and an outer seal portion of the flange portion of the container body. It is obtained by heat sealing at the same time.
When the package of the present invention is used, it is placed in a microwave oven and cooked without pretreatment. When heated, the temperature rises, and steam is generated from the food, so that the internal pressure of the package increases, and in particular, the lid swells. When the internal pressure exceeds a certain level, part of the inner seal part will open, steam will be discharged from the steam outlet through the groove, the package will not burst, the food is heated to an appropriate temperature, and the seal part is easy. It is a peel and can be easily opened. You can easily take out the stored food, and also move the food in the sub-storage part of the package to the main storage part and put it on the main food, sprinkle it on the main food, mix it, etc. be able to.

In the food package of the present invention, each storage portion is divided by the middle seal portion and the inner seal portion, and the food stored in each storage portion is sealed by the inner seal portion.
Therefore, the odors do not mix until the food is heat-treated in a microwave oven and the inner seal portion is peeled off, and the foods are not mixed together until they are eaten, so that the foods can be eaten hot and deliciously. If there is no middle seal part between the storage parts, and the food package is inside the outer seal part and is totally sealed by one inner seal part, even if different foods are stored in different storage parts, If the odor of each food is mixed in each storage part during storage, or if the food is liquid or powder or fine, the food will be mixed when the food package tilts and it will be delicious when eating. Will fade. Therefore, it is better to eat each food together when eating, so it is better that each storage portion is sealed by each middle seal portion and inner seal portion.

[0010]

【Example】

<< Example 1 >> 200 rice is stored in the storage portion A of the PP container body.
g, 160 g of beef bowl ingredients were placed in the storage part B, the lid of the Ny / easy peel layer was heat-sealed at 200 ° C., and then frozen and stored. After that, this food package was treated with a 1500W microwave oven (SANYO MW RENGE-PRO) for 2 minutes. As a result, the inner and inner seals partly peeled off, and the internal pressure escaped from the groove steam discharge port, leaving the inside of the microwave oven. Heat treatment was done without fouling. This food package was taken out from the microwave oven, and when the lid was peeled off, steam did not blow out, and the food package was easily peeled off. Since each of the contents was stored separately, the contents were heated without being mixed and could be eaten hot and delicious.

[Example 2] 180 g of spaghetti in the storage A of the PP / EVOH / PP container body, 50 g of meat sauce in the storage B, 50 g of tomato sauce in the storage C, and KNy / heat resistance in a nitrogen gas atmosphere. The lid of the easy peel seal layer was heat-sealed at 200 ° C., then subjected to 121 ° C. pressure heat sterilization treatment in a differential pressure type retort kettle and stored at room temperature for 90 days. When this food package was treated in a microwave oven of 500 W for 4 minutes, a part of the inner seal and the inner seal was peeled off, the internal pressure was released from the steam outlet of the groove, and the inside of the microwave was heated without being contaminated. When this food package was taken out of the microwave oven and the lid was peeled off, it could be easily peeled off without blowing out steam. Since the contents were stored separately, the contents were heated without mixing and could be eaten hot and delicious, and the two flavors of spaghetti of meat sauce and tomato sauce could be enjoyed in one food package.

[0012]

EFFECTS OF THE INVENTION According to the present invention, when cooking in a microwave oven, it is possible to heat the food package as it is without pretreatment such as drilling a hole for a steam outlet, etc., and rupture the food package. It is an easy-peel food package that is easy to handle without the risk of being damaged, and by storing different main foods and side foods separately, the main foods and side foods become the first together when eating. So you can eat it without losing its taste.

[Brief description of drawings]

FIG. 1 is a plan view of a container body used for a food package having two storage parts according to the present invention.

FIG. 2 is a cross-sectional view of the state in which the XY plane of FIG. 1 is cut and the lid body is sealed.

FIG. 3 is a plan view of a container body used for a food package having three storage parts according to the present invention.

Claims (1)

[Claims] 1. A container body is sealed by an inner seal portion and has a multi-chamber storage portion divided by an intermediate seal portion, and each storage portion stores cooked foods of different types separately, A plastic packaging body obtained by heat-sealing a lid material on a flange surface, wherein the heat-sealing has an easy-peel middle seal portion, an inner seal portion, and an outer seal portion, and the inner seal portion. A multi-divided packaging for microwave oven cooking, characterized in that a groove portion or a non-sealing portion is provided between the outer sealing portion and the outer sealing portion, and at least one steam outlet connected to the groove portion or the non-sealing portion is connected to the outside air. body.