JP2001315863A - Packaging body for heat-cooking, and heat-cooking method by packaging body for heat-cooking - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging body for heat-cooking by which a heat- cooking can be performed under a state as it is without providing holes for air-purging when the heat-cooking is performed using a microwave oven or the like, and wherein a container deformation due to a pressure reduction after the heat-cooking is not generated. SOLUTION: This packaging body for heat-cooking comprises a container 1 in which a content is housed, and a lid body 3 which is heat-sealed with the flange 2 of the container 1. Then, in the flange width direction of the container 1, a communicating means 4 by which the inside of the container 1 and the outside of the container 1 communicate with each other is provided. The communicating means 4 is sealed at the time of a heat-sealing, and is unsealed when an internal pressure is generated in the container 1 by a heat-cooking. Thus, the inside of the container 1 and the outside of the container 1 communicate with each other. At the same time, after the communicating, the communicating between the inside of the container 1 and the outside of the container 1 is maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking method using a microwave oven or the like, which can be cooked as it is without providing a hole for venting air.
The present invention relates to a package for heating and cooking that does not cause deformation of a container due to reduced pressure after heating and a method of cooking with the package for heating and cooking.

[0002]

2. Description of the Related Art Conventionally, when a sealed container package for cooked food is heated and cooked using a microwave oven or the like, a cover (top) is provided in advance so that the internal pressure does not rise due to the heating and the package does not burst. The material is slightly turned up to form a gap-like steaming port, and heating is performed so that the internal air escapes from the steaming port.

[0003] However, after the package is heated, water droplets such as steam that has passed through the package adhere to the port.
The gap is closed, and the inside of the package is sealed.

Therefore, after cooking, it becomes difficult for air from the outside to enter the inside of the package, and as a result, the inside of the package is reduced in pressure, and the package is deformed by the negative pressure, so that the package is placed. Not only was the state unstable, but the appearance was greatly impaired.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and comprises a flange of a container for accommodating contents in a cooking package and a lid which is heat-sealed. In the flange width direction of the container, there is provided communication means for communicating the inside of the container and the outside of the container, and the communication means is sealed at the time of heat sealing, and is opened when an internal pressure is generated in the container by heating and cooking. Then, while the inside of the container and the outside of the container communicate with each other, and after the communication, by maintaining communication between the inside of the container and the outside of the container, when cooking using a microwave oven or the like, And a cooking package and a cooking package that can be cooked as they are without providing a hole for venting air and that do not cause deformation of the container due to reduced pressure after cooking. It is an object to provide a cooking method according to.

[0006]

According to the present invention, there is provided a container for accommodating contents therein, and a lid which is heat-sealed to a flange of the container to hermetically seal the contents. In the package for heating cooking consisting of
In the flange width direction of the container, a communication unit is provided for communicating the inside of the container and the outside of the container, and the communication unit is sealed at the time of heat sealing, and when an internal pressure is generated in the container by heating and cooking. When opened, the inside of the container and the outside of the container communicate with each other, and after the communication, the package for heating and cooking maintains the communication between the inside of the container and the outside of the container.

[0007] The communication means is a concave body provided at least at one or more locations in the circumferential direction of the container flange.

Further, the communicating means forms a convex body which is continuous in the circumferential direction of the container flange, and one or more concave bodies are provided at at least one position of the convex body.

The communication means is provided at a predetermined interval by connecting a convex body formed continuously in the circumferential direction of the container flange and at least at one or more locations of the convex body substantially orthogonally to the convex body. A pair of sub-convex bodies and a concave body formed between the pair of sub-convex bodies.

The communicating means includes a convex body formed continuously in the circumferential direction of the container flange and at an intermediate portion in the flange width direction, a cutout provided at at least one or more places of the convex body, The cutting portion has a pair of sub-convex bodies provided at predetermined intervals on the inner and outer sides of the convex body in the flange width direction, and a concave body formed between the pair of sub-convex bodies. .

The communicating means includes a convex body formed continuously in the circumferential direction of the container flange and at an intermediate portion in the flange width direction, a cutout provided at at least one or more locations of the convex body, A pair of sub-convex bodies provided at predetermined intervals outside the convex body in the flange width direction at the cutout portion, a concave body formed between the pair of sub-convex bodies, And a plurality of concave portions provided on the inner peripheral edge of the flange.

And a container for containing the contents therein;
A package for heating and cooking comprising a lid of the container and a lid heat-sealed to seal the contents, wherein the inside of the container and the outside of the container communicate in the width direction of the flange of the container. A communication means is provided, and the communication means is sealed at the time of heat sealing, and is opened when an internal pressure is generated in the container by heating and cooking, so that the inside of the container and the outside of the container communicate with each other, and the communication is performed. Thereafter, there is provided a heating and cooking method using a heating and cooking package that maintains communication between the inside of the container and the outside of the container and prevents deformation of the container due to reduced pressure generated inside the container.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a heating and cooking method according to the present invention will be described with reference to the drawings. 1, 4 and 5, A is a package for heating and cooking, a container 1 for housing the contents therein, and a lid 3 which is heat-sealed to the flange 2 of the container 1 to seal the contents. Consists of

A communication means 4 is provided in the width direction of the flange 2 of the container 1 for communicating the inside of the container 1 with the outside of the container 1.

The container 1 is made of polypropylene, polyethylene, polyester, polycarbonate,
It is composed of a polystyrene resin or a blend thereof, and has a shape having, for example, an opening 5 through which contents are taken in and out, and a peripheral portion having a predetermined width as shown in FIG. It is formed in a box shape around the flange 2.

The lid 3 has an easily peelable sealant film laminated on the innermost layer of a base made of a biaxially oriented 6 nylon film, a biaxially oriented polyethylene terephthalate film, or a composite film thereof. The sealant film layer may be provided on the flange 2 side. The sealant film layer and the flange 2 of the container 1 are sealed inside the container 1 by heat sealing. The heat seal strength is, for example, about 5 to 50 KPa in internal pressure strength.

As shown in FIG. 2, the communicating means 4 forms a continuous convex body 6 at the intermediate portion of the flange 2 in the circumferential direction of the container flange 2, and at least one portion of the convex body 6 As described above, one or a plurality of groove-shaped concave bodies 7 are provided, and the communicating means 4 has an inner edge side of the container flange 1 facing the inner edge or curved in a close state. Or it is formed in a shape such as a triangular shape. This allows the internal pressurized air and water vapor to escape to the outside by opening (vapor passing) ahead of the other heat-sealing parts. For example, a conventional steam passing means such as intervening is used (for example, see Japanese Patent Application Laid-Open No. 10-101154).

The convex body 6 in the communicating means 4 has a width d.
However, as shown in FIG.
The height h is, as shown in FIG.
Preferably, it is formed to about 5 mm.

Further, as shown in FIG. 3, the concave body 7 provided on the convex body 6 has a range w of 10 mm to 10 mm.
About 20 mm, and the groove depth e is 0.3 mm to 1.0
mm.

Therefore, the cooking device A and the cooking method using the cooking package according to the embodiment of the present invention configured as described above have the following effects. As shown in FIG. 1 and FIG. 2, a convex body 6 is provided around the flange 2 of the container 1.

Furthermore, one or more (three in the present embodiment) at least at one or more places (in the present embodiment, at the middle of the two sides in the longitudinal direction of the flange 2) of the convex body 6.
Is provided.

After filling the container 1 with the contents, the lid 3
Cover the opening 5 of the container 1 and heat-seal the flange 2 and the lid 3 with a conventional heat seal bar (not shown).
The lid 3 is heat-sealed by the sealant layer and adheres tightly, and the contents are sealed in the container 1.

At this time, in the communication means 4 formed in the flange 2, the lid 3 is cut into the concave body 7 formed in a groove shape by heat and pressure, and as shown in FIG. Since the flow between the inside of the container 1 and the outside of the container 1 is hindered, good sealed packaging can be obtained.

When using the cooking package A containing the content, the content is heated, for example, in a microwave oven, and the cooking of the content proceeds with the heating, and the heating causes the steam to be released. The internal pressure of the container 1 increases due to the occurrence and expansion of the gas.

When a predetermined internal pressure of the container 1 is generated, the easy-opening means provided in the communicating means 4 acts to cause the sealant layer of the lid 3 to peel off, and the communicating means 4 naturally vaporizes. As shown in FIG. 4 (b), the inside of the container 1 and the outside of the container 1 communicate with each other, and steam and expanded air are released from the communication means 4 to the outside of the container.

After the internal pressure of the container 1 is released, a gap is formed between the concave body 7 and the lid 3 in the communicating means 4 as shown in FIG. So
The communication between the inside of the container 1 and the outside of the container 1 is maintained, and a negative pressure is not generated in the container 1 such as when the container 1 or the contents are cooled. Never wake up.

The package A for heating and cooking according to the embodiment of the present invention.
As shown in FIG. 5, the communicating means 4 may have a configuration in which at least one concave body 7 is provided in the circumferential direction of the container flange 2.
In some cases, the convex body 6 may not be provided around.

In this embodiment, as in the above-described embodiment, the communication means 4 is hermetically sealed at the time of heat sealing, and when an internal pressure is generated in the container 1 by heating and cooking, the inside of the container 1 and the container 1 are closed. Communicates with the outside, and after the communication,
A gap is formed between the concave body 7 and the lid 3 so that communication between the inside of the container 1 and the outside of the container 1 can be maintained.

Furthermore, the package A for cooking according to the embodiment of the present invention.
The communication means 4 can also adopt the configuration shown in FIGS. 6 to 8, and among them, in the case shown in FIG. 6, a convex body 6 formed continuously in the circumferential direction of the container flange 2, At least one or more locations of the convex body 6
And a pair of sub-convex bodies 6a and 6b provided at a predetermined interval, and a concave body 7 formed between the pair of sub-convex bodies 6a and 6b.

According to this configuration, when cooking using a microwave oven or the like, the cooking can be performed as it is without providing a hole for venting air.
In addition to the effect of not causing the deformation of the container due to the reduced pressure after the cooking, the effect of the steaming operation and the effect of smoothly flowing the air into the container 1 after the cooking can be obtained from the above-described embodiment. Play.

The communicating means 4 shown in FIG. 7 includes a convex body 6 formed continuously in the circumferential direction of the container flange 2 and at an intermediate portion in the flange width direction.
A cutout 10 provided at least at one or more locations of the convex body 6, and a pair of sub-convex bodies 6 a and 6 b provided at predetermined intervals inside and outside the convex body 6 in the flange width direction in the cutout 10. And a concave body 7 formed between the pair of sub-convex bodies 6a and 6b.

An example of the communication means 4 in the case shown in FIG.
While the sub-convex bodies 6a and 6b shown in FIG. 6 are formed in a continuous straight shape, they have a point-shaped body formed in a circular shape.

According to this configuration, when cooking using a microwave oven or the like, the cooking can be performed in the same state without providing a hole for bleeding air.
In addition to the effect of not causing the deformation of the container due to the reduced pressure after the cooking, the effect of the steaming operation and the effect of smoothly flowing the air into the container 1 after the cooking can be obtained from the above-described embodiment. Play.

The communicating means 4 in the case shown in FIG. 8 includes a convex body 6 formed continuously in the circumferential direction of the container flange 2 and formed at an intermediate portion in the flange width direction. Resection 10 provided in at least one or more places
And a pair of sub-convex bodies 6 a, which are provided at predetermined intervals outside the convex body 6 in the flange width direction in the cutout 10.
6b, a concave body 7 formed between the pair of sub-convex bodies 6a, 6b, and a plurality of concave parts 11 provided at a plurality of inner peripheral edges of the flange 2 in the cutout part 10.

According to this configuration, when cooking using a microwave oven or the like, the cooking can be performed as it is without providing a hole for venting air.
In addition to the effect of not causing the deformation of the container due to the reduced pressure after the cooking, the effect of the steaming operation and the effect of smoothly flowing the air into the container 1 after the cooking can be obtained from the above-described embodiment. Play. In addition, the flow of air or water vapor passing through the concave body 7 is promoted or smoothly performed by the concave part 11.

[0036]

As described above, according to the heating cooking package and the cooking method using the heating cooking package of the present invention configured as described above, the internal pressure is increased by the communication means when heating using a microwave oven or the like. If this is the case, natural steam can pass through, the pressure inside the container can be released, and cooking can be carried out as it is without providing a hole for venting air. In addition, since the communication between the inside and the outside of the container is satisfactorily performed by the communication means in the container after the pressure relief, the container does not deform due to the reduced pressure after cooking. And the like.

[Brief description of the drawings]

FIG. 1 shows a package for heating and cooking according to one embodiment of the present invention, in which (a) is a partially cutaway plan view,
(B) is an explanatory view showing a part of the flange portion.

FIG. 2 is a perspective view showing a container of the package for heating and cooking in FIG. 1;

FIG. 3 is an explanatory view showing a main part of a communicating means of the package for heating and cooking in FIG. 1;

FIG. 4 is an explanatory view showing an operation state of a communication unit of the heating and cooking package in FIG. 1;

5A and 5B show another embodiment of the package for heating and cooking according to the present invention, wherein FIG. 5A is a partial plan view showing a part of the package, and FIG. FIG.

6A and 6B show another example of the communicating means of the package for heating and cooking in FIG. 1, wherein FIG. 6A is a plan view of a main part, and FIG. Show.

7A and 7B show still another example of the communicating means of the package for heating and cooking in FIG. 1; FIG. 7A is a plan view of a main part;
(B) shows a side view in section at the inner end of the flange.

8 shows still another example of the communicating means of the package for heating and cooking in FIG. 1, wherein (a) is a plan view of a main part,
(B) shows a side view in section at the inner end of the flange.

[Explanation of symbols]

 A Package for heating and cooking 1 Container 2 Flange 3 Lid 4 Communication means 6 Convex body 6a Sub-convex body 7 Concave body 10 Cutting section 11 Concave section

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3L086 BF01 BF04 DA30 4B035 LC12 LE11 LP16 LT16 4B055 AA10 BA13 BA36 CA06 CB03 DB15

Claims (7)

[Claims] 1. A heating / cooking package comprising a container for accommodating contents therein, and a lid heat-sealed to the flange of the container to seal the contents, wherein a width direction of the flange of the container is provided. , A communication means for communicating between the inside of the container and the outside of the container is provided, wherein the communication means is sealed at the time of heat sealing, and is opened when an internal pressure is generated in the container by heating and cooking; And the outside of the container communicate with each other, and after the communication,
A package for heating and cooking, wherein communication between the inside of the container and the outside of the container is maintained. 2. The package for heating and cooking according to claim 1, wherein the communicating means is a concave body provided at least at one or more positions in a circumferential direction of the container flange. 3. The communication means is characterized in that a convex body which is continuous in the circumferential direction of the container flange is formed, and one or a plurality of concave bodies are provided in at least one place of the convex body. The package for heating and cooking according to claim 1. 4. The communication means includes: a convex body formed continuously in a circumferential direction of the container flange; and at least one of the convex bodies.
At a plurality of places, a pair of sub-convex bodies connected substantially orthogonal to the convex body and provided at predetermined intervals, and a concave body formed between the pair of sub-convex bodies are provided. The package for heating and cooking according to claim 1, characterized in that: 5. The communicating means comprises: a convex body formed continuously in the circumferential direction of the container flange and at an intermediate portion in the flange width direction; and a cutout provided at at least one or more locations of the convex body. A pair of sub-convex bodies provided at predetermined intervals on the inside and outside of the convex body in the flange width direction in the cutout portion, and a concave body formed between the pair of sub-convex bodies. The package for heating and cooking according to claim 1, comprising: 6. The communicating means comprises: a convex body formed continuously in the circumferential direction of the container flange and at an intermediate portion in the flange width direction; and a cutout provided at at least one location of the convex body. A pair of sub-convex bodies provided at predetermined intervals outside the convex body in the flange width direction in the cutout portion, and a concave body formed between the pair of sub-convex bodies, 2. The package for heating and cooking according to claim 1, wherein the cut portion has a plurality of concave portions provided on an inner peripheral edge of the flange. 7. A package for heating and cooking comprising a container for housing contents therein, and a lid which is heat-sealed to the flange of the container and seals the contents, wherein a width direction of the flange of the container is provided. , A communication means for communicating between the inside of the container and the outside of the container is provided, wherein the communication means is sealed at the time of heat sealing, and is opened when an internal pressure is generated in the container by heating and cooking; And the outside of the container communicate with each other, and after the communication,
A method for heating and cooking using a package for heating and cooking, wherein communication between the inside of the container and the outside of the container is maintained, and deformation of the container due to reduced pressure generated inside the container is prevented.