JP2002166978A - Simplified container for food - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a simplified container which can prevent a lid thereof from slipping off due to deformation of the whole of a container body generated when the container is heated, while heat-insulating properties as a simplified container being maintained, and which has also a good external appearance. SOLUTION: A main body 1 of the simplified container 10 for foods consists of an inner container 3 comprising a thin-walled integrally molded heat-resistant plastic body and an edge frame 4 made of foamed plastics. A first heat- insulating space 51 is formed between an extending part 31 from the periphery 32 of the upper edge of a rising part 33 whose lower end is thermally bonded to the lower end of the frame 4 and the inner surface of the edge frame 4. A second heat-insulating space 52 is formed between the rising part 33 of the inner container 3 and the extending part 31. A double heat-insulating space comprising the first heat-insulating space 51 and the second heat-insulating space 52 is provided between the inner container 3 and the edge frame 4. An engaging mechanism 6 is formed at the part 31 from the periphery 32 of the upper edge of the container 3 at a corner B and at the periphery of a cap member 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple container for food which comprises a middle container integrally formed with a thin plastic plate and an edge frame made of foamed plastic, and which is particularly suitable for heating in a microwave oven.

[0002]

2. Description of the Related Art The applicant of the present invention first described on April 1, 2000
Patent application filed on 1 day, Japanese Patent Application No. 2000-109489
Disclosed a simple food container suitable for heating in a microwave oven. This simple food container has a thickness of 0.2
An inner container made of a thin heat-resistant plastic integral molded body having a thickness of about 0.5 mm and an edge frame made of a foamed plastic having a thickness of about 3 to 7 mm. Is formed, furthermore, a second heat insulation space is formed between the outer periphery of the inner container and the edge frame, and this double heat insulation space allows heating of the contents in the inner container by a microwave oven. This prevents the burnout and deformation of the edge frame.

[0003] The applicant has further filed a patent application filed on August 21, 2000, and filed Japanese Patent Application No. 2000-250.
In 136, when the processed food stored in the simple food container is applied to heating in a microwave oven, the lid does not fit well in the container and the lid comes off, which causes various inconveniences for the user. A solution to the problem of the occurrence of a problem has been disclosed. This is because a concave locking portion is formed on the outer surface of the container side surface of the extension from the upper edge of the inner container, and below the peripheral portion of the lid member that comes into contact with the outer surface of the extension of the inner container in a fitted state. A concave locking portion is formed on the outer side surface of the extending portion. This is an extremely simple locking structure, but the lid member does not come off from the middle container even when heated by a microwave oven, thereby realizing the practical use of the simple container having the double insulating space. It is.

[0004]

However, when the simple container storing the processed food is heated by a microwave oven, the entire container is inevitably twisted, and the simple container main body of the above-mentioned proposed simple container is twisted. The locking structure with the lid has a problem that the locked state may be released because the structure cannot cope with the torsion due to the heating of the entire container.

Further, there is a problem in that the height of the edge frame is considerably lower than the lower end of the peripheral portion of the lid member, and the inner container is rounded out, and the appearance is poor.

The problem to be solved by the present invention is that it is possible to cope with the detachment of the lid due to the twisting of the whole container due to the heating while maintaining the heat insulating property as a simple container.
An object of the present invention is to obtain a good-looking simple food container.

[0007]

According to the present invention, since the entire container is twisted by heating, the corner of the container is fixed and the entire container is twisted. It is formed in the corner part, so that the simple container with the lid containing the processed food does not come off even by heating with a microwave oven, and the edge frame can be formed at the same height as the inner container. It does not degrade the appearance.

That is, the present invention comprises an inner container integrally formed with a thin plastic plate and an edge frame made of a foamed plastic, wherein an extension extending downward from the upper peripheral edge of the inner container is formed. The end of the portion has a food simple container body in which a heat insulation space is formed between the middle container and the edge frame by being thermally fused to the edge frame, and a peripheral portion extending downward on the outer periphery thereof, A simple food container comprising a lid member to be put on the main body, characterized in that a locking structure with the lid member is formed on an outer surface of an extension portion extending downward from a tip of an upper peripheral edge at a corner of the inner container.

The locking structure may be of any form or structure, but a protruding portion or a concave portion extends downward from the upper peripheral edge of the inner container at a position corresponding to the corner of the container. Is formed, and when the lid is put on the container main body, a structure in which a concave portion or a convex portion to be fitted with this is formed at the position of the lid corresponding to the convex portion or the concave portion of the inner container, Is also convenient from the viewpoint of simplicity in production.

[0010]

1 and 2 are views showing an embodiment of a simple container of the present invention. FIG. 1 is a view of a simple food container 10 according to the present invention as viewed from above. FIG. 2 shows a cross section taken along the line AA of FIG. 1 in a state where the cover body 2 is put on the container body 1 and locked and fitted.

The main body 1 of the food simple container 10 of the present invention
Inner container 3 made of a thin heat-resistant plastic molded body
And an edge frame 4 made of foamed plastic. And, between the inner container 3 and the edge frame 4, the lower end thereof extends from the peripheral edge 32 of the upper edge of the rising portion 33, which is heat-sealed to the lower end of the edge frame 4, and the inner surface of the edge frame 4. , A rising portion 33 and an extension portion 31 of the inner container 2.
And a second heat insulation space with the second heat insulation space 52 formed therebetween. Thus, when the contents stored in the inner container 3 are heated by the microwave oven, the edge frame 4 is prevented from being melted down and deformed. Further, the main body 1 has a peripheral portion extending downward on its outer periphery. 21
The cover member 2 having the structure can be fitted.

A feature of the present invention is that the container 10 shown in FIG.
The locking mechanism 6 is formed on the extended portion 31 from the cover member 2 and the peripheral portion 21 of the lid member 2.

FIG. 3 shows that the locking mechanism 6 includes a concave portion 34 in the extension 31 from the upper peripheral portion 32 of the upper edge of the middle container 3 and a peripheral edge of the upper edge of the middle container 3 in the peripheral portion 21 of the lid member 2. Protrusion 22 is provided at a position corresponding to recess 34 in extension 31 from portion 32,
The projection 22 is formed by fitting the projection 22 into the recess 34 of the inner container 3.

The peripheral portion 21 of the lid member 2 has a portion mounted on the top portion 32 of the upper peripheral portion of the upper edge of the middle container 3, and a tip thereof is engaged with the upper end surface of the edge frame 4 of the container body. Locking part 24
The cover member 2 can be stably covered on the main body 1, and the cover member 2 is separated from the inner container 1 even when heating by the microwave oven by the locking mechanism 6 between the main body 1 and the cover member 2. There is no departure.

[0015]

When the food stored in the middle container is heated by the microwave oven, the edge frame of the foamed plastic made of the material having a relatively low melting point is not deformed or melted off. Even if the container is twisted during heating, the lid member does not come off from the main body, and a simple container for processed food with good appearance can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a simple food container according to the present invention.

FIG. 2 is a cross-sectional view taken along line AA of FIG.

FIG. 3 is an enlarged view of the locking mechanism shown in FIG. 1;

[Explanation of symbols]

Simple container for food 10 according to the present invention Container main body 1 Cover member 2 Peripheral portion 21 Convex portion 22 Locking portion 24 Middle container 3 Rising portion 33 Upper peripheral portion 32 Extended portion 31 Recess 34 Edge frame 4 First heat shield Space 51 Second heat insulation space 52 Locking mechanism 6

Claims (2)

[Claims] 1. An intermediate container formed integrally with a thin plastic plate, and an edge frame made of a foamed plastic, and an extension portion extending downward from an upper peripheral end of the inner container is formed.
The tip of the extension has a food simple container body in which a heat shielding space is formed between the inner container and the edge frame by being thermally fused to the edge frame, and a peripheral portion extending downward on the outer periphery thereof, A simple food container comprising a lid member to cover the simple container body, wherein a simple food container having a locking structure with the lid member formed on an outer surface of an extension portion extending downward from an upper peripheral end at a corner portion of the inside of the container. . 2. A locking structure wherein a projection or a recess is formed in an extension extending downward from an upper peripheral edge of a middle container at a position corresponding to a corner of the container, and a lid is placed on the container body. 2. The simple food container according to claim 1, wherein a concave portion or a convex portion which can be fitted with the lid portion is formed at a position of the lid portion corresponding to the convex portion or the concave portion of the middle container.