JPH09207971A - 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: A plastic packaging body is for housing different kinds of cooked foods separately in each of multi-sectional housing parts A, B that are divided with an inner seal part 3 provided independently at the inside of a container body 1, and a lid member is fixed by heat sealing to the surface of the flange of the container body. The heat seal is made up of a double seal composed of an easily peelable inner seal 3 and an outer seal 4, and a groove 5 or an unsealed part is provided at a part between the inner seal 3 and the outer seal 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 multi-chamber storage compartment divided by independently providing the inner seal portion in the container body, stores different types of cooked food separately, heat seal the lid material to the flange surface. It is a plastic package that consists of
The heat seal is a double seal of an inner seal portion and an outer seal portion having an easy peel property, and a groove or a non-groove is provided between the inner seal portion and the outer seal portion and between the inner seal portion and the inner seal portion of each storage portion. A multi-divided package for microwave oven cooking, comprising a seal portion and at least one steam outlet connected to the groove portion or the non-seal portion and connected to the outside air.

[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. . Further, each storage part has an independent inner seal part, and the storage part is divided into two chambers A and B, and a groove part is provided between the inner seal part of the storage part A and the inner seal part of the storage part B. Is provided. 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. And the steam pressure facilitates the opening of the inner seal,
In addition, the seal width of the inner seal portion 3 is smaller than the seal width of the outer seal portion 4 in order to require an appropriate seal strength,
mm. The inner and outer seals are lids 2
Is heat-sealed, and the strength of the seal is such that it is easily cleaved by the vapor pressure, and it is heat-sealed easily at room temperature. What is shown in FIGS. 3 and 4 is a container body 1 in which a storage part having an independent inner seal part is provided with three chambers A, B and C, and the groove part 5 has an outer seal as in the case of the container. It is provided between the portion 4 and the inner seal portion 3 and between the inner seal portion 3 and the inner seal portion 3, and serves as a steam discharge path. The container body 1 is heat-sealed with the lid body 2 and has an easy peeling property.

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 heat-sealed at the same time as the inner seal portion and the outer seal portion of the flange portion of the container body. It is obtained by doing. 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, since each storage section has its own inner seal section, the food stored in each storage section is sealed by the inner seal section. The odor does not mix until the inner seal part is peeled off by heat treatment in a microwave oven, and since they are not mixed together until the time of eating, it is possible to eat hot and delicious. If there is no inner seal part between the storage parts and the food package is inside the outer seal part and is entirely 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 inner seal portion.

[0010]

【Example】

<< Example 1 >> 200 g of seasoned cooked rice is stored in the storage unit A of the PP container body, 120 g of cooked vegetables is stored in the storage unit B, and salted roasted salmon is stored in the storage unit C.
The lid of the P) / easy peel seal layer was heat-sealed at 200 ° C. and then refrigerated. After 24 hours, put this food package in a 1500W microwave oven (SANYO MW RENGE-PR
When it was treated with O) for 45 seconds, a part of the inner seal part was peeled off, the inner pressure was released from the groove steam outlet, and the heat treatment was performed without contaminating the inside of the microwave oven. 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 content is stored separately, the contents are heated without mixing,
I was able to eat hot and delicious.

<Example 2> 180 g of cooked rice was put in the storing section A of the PP / EVOH / PP container body, 100 g of cream stew was stored in the storing section B, and 80 g of roasted meat was stored in the storing section C, and KNy / heat resistance was applied 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 45 days. 4 this food package in a microwave oven of 500W
As a result of the minute treatment, a part of the inner seal portion was peeled off, the inner pressure was released from the groove steam outlet, and the heat treatment was performed without contaminating the inside of the microwave oven. 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 each of the contents was stored separately, the contents were heated without being mixed and could be eaten hot and delicious.

Example 3 200 g of noodles were placed in the storage portion A of the PP container body containing calcium carbonate and 100 g of the tsukemen noodles were placed in the storage portion B, and the lid of the Ny / easy peel layer was heat-sealed at 200.degree. , Then frozen and stored. Then, when this food package was treated with a microwave oven of 1500 W for 2 minutes, a part of the inner seal part was peeled off, the internal pressure was released from the groove steam outlet, and the inside of the microwave oven was heat-treated without being contaminated. The food package was taken out from the microwave oven, and when the lid was peeled off, steam was not blown out and the 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.

<Embodiment 4> A total of 400 g of tofu and water are stored in a storage portion A of a PP container body containing calcium carbonate and a storage portion B.
100 g of soup, put a proper amount of condiment in the storage C, Ny /
Heat seal the lid of the easy peel layer at 200 ° C,
Then, it was stored refrigerated. 48 hours later 50 this food package
When treated in a 0 W microwave oven for 5 minutes, a part of the inner seal part was peeled off and the contents boiled, but the internal pressure was released from the groove steam outlet, and heat treatment was performed without contaminating the inside of the microwave oven. At this time, the inner seal part of the storage part C was not peeled off. The food package was taken out from the microwave oven, and when the lid was peeled off, steam was not blown out and the 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.

[0014]

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 a state in which the XY plane of FIG. 1 is cut and the lid body is heat-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.

FIG. 4 is a cross-sectional view of a state in which the XY plane of FIG. 3 is cut and the lid body is heat-sealed.

Claims (1)

[Claims] 1. A cooked food of a different type is separately stored in a multi-chamber storage section which is divided by independently providing an inner sealing section in the container body, and a lid member is heat-sealed on the flange surface. The heat-sealing is a double seal of an inner seal portion and an outer seal portion having an easy peel property, and the heat seal is formed between the inner seal portion and the outer seal portion and the inner seal portion of each storage portion. A multi-divided package for microwave cooking, characterized in that a groove or a non-sealing portion is provided between the inner and inner sealing portions, and at least one steam outlet connected to the groove or the non-sealing portion and connected to the outside air is provided. body.