JPH09286437A - Lunch container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lunch container with which ingredients such as of curry does not overflow from the container even when the ingredients are put on rice and heating efficiency is not degraded, by providing a bent part surrounding the periphery of an opening of a housing part which contains the rice and moving upward a cylindrical reinforcing wall opposed to the periphery of the opening of the housing part by pinching the bent part. SOLUTION: A housing part 2 of a lunch container 1 is filled with a rice 7 to capacity. At the periphery of the opening of the housing part 2, a reinforcing wall 4 is provided through a bent part 3. At the opposite end of the end of the reinforcing wall 4 connected to the bent part 3, a flange-like adhesive part 5 is provided so as to seal the housing part 2 in a sterilized state. When the lunch container 1 is heated and the rice 7 contained in the housing part 2 is warmed, a film 6 is removed from the lunch container 1 and the reinforcing wall 4 is pulled upward so as to deepen the depth of the housing part 3. Then, ingredients such as of curry and the like is put on the rice 7. Thus, overflow of the ingredients can be prevented and heating efficiency is not degraded.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] The present invention relates to a lunch box container in which foods such as rice are packed aseptically.

[0002]

2. Description of the Related Art In recent years, bento boxes that can be eaten deliciously just by heating have been sold. This conventional lunch container will be described with reference to FIGS. FIG. 5: is sectional drawing which showed the state at the time of transporting the conventional lunch container. FIG. 6 is a cross-sectional view showing a state before meal of the lunch container in FIG. FIG. 7: is sectional drawing of the lunch box container of the other conventional shape.

In FIG. 5, the bento container 10 is a storage unit 1.
1, a bonding portion 12, and a film 13. The storage portion 11 is formed in a bowl shape with one surface opened, and the rice 7 is stored inside the storage portion 11. Further, a brim-shaped adhesive portion 12 is provided around the opening of the storage portion 11, and the film 13 is formed.
When adhering to the adhesive portion 12, the storage portion 11 is made aseptic and hermetically sealed.

The rice 7 stored in the storage portion 11 is stored in an amount close to the maximum volume of the storage portion 11. This is to transport a large amount of rice 7 in a small volume in consideration of space efficiency and the like when transporting lunch boxes.
Further, if the amount of air contained in the storage portion 11 is small, the efficiency of heating the lunch box container is improved.

[0005]

In the conventional lunch container 10 as described above, for example, as shown in FIG.
When a large amount of the ingredient 8 such as curry is put on the rice 7 after removing the ingredient, the ingredient 8 may sometimes stick out from the storage section 11.

Further, as shown in FIG. 7, by forming the storage portion 11a to have a deep bottom, it is possible to prevent the tool 8 hanging on the rice 7 from protruding, but the space efficiency during transportation becomes poor. Also, when heating, the air contained in the container becomes a heat insulating material, and the heating efficiency deteriorates.

[0007]

Therefore, according to the present invention, a storage portion formed in a bowl shape and storing rice,
The bent portion is provided so as to surround the opening of the storage portion, and the cylindrical complementary wall that faces the circumference of the opening of the storage portion with the bent portion interposed therebetween is provided. The present invention provides a lunch container characterized in that the supplementary wall is movable upward.

[0008]

[Function] The lunch container is heated to warm the rice contained in the lunch container. Then, the film is removed from the lunch container. Then, the supplementary wall is caused to deepen the depth of the lunch container. Then put the ingredients on the rice.

[0009]

EXAMPLES Examples of the present invention will be described with reference to FIGS. FIG. 1 is a sectional view showing a state of the lunch container according to the present invention during transportation. FIG. 2 is a cross-sectional view showing a state before meal in the lunch container in FIG. 1. FIG.
It is sectional drawing which showed the state at the time of the transportation of the lunch container which is another Example in this invention. FIG. 4 is a cross-sectional view showing a state before meal in the lunch container in FIG.

In FIG. 1, the bento container 1 includes a storage part 2
The bent portion 3, the supplementary wall 4, the adhesive portion 5, and the film 6. Like the conventional example, the storage 2 is formed in a bowl shape with one surface opened, and inside the storage 2, the rice 7 is stacked to the full capacity of the storage. Around the opening of the storage portion 2, a supplementary wall 4 is provided via a bent portion 3. Then, at the end opposite to the end of the supplementary wall 4 connected to the bent portion 3, a flange-shaped adhesive portion 5 is formed as in the conventional case.
Is provided, and when the film 6 is bonded to the bonding part 5, the storage part 2 is made aseptic and hermetically sealed.

In FIG. 2, when the lunch container 1 is heated to warm the rice 7 contained in the container 2, the film 6 is removed from the lunch container 1. Then, the auxiliary wall 4 is raised upward to increase the depth of the storage section 2. And
Place curry or other ingredients 8 on the rice 7.

When it is desired to make the container deeper, the auxiliary wall 4a is formed in a bellows shape as shown in FIGS. When the implement 8 is placed, the bellows portion of the supplementary wall 4a may be extended.

[0013]

EFFECTS OF THE INVENTION According to the present invention, even if a lunch box container is provided with curry or the like, it does not spill from the container and the heating efficiency is not deteriorated.

[0014]

[Brief description of drawings]

FIG. 1 is a sectional view showing a state of a lunch container according to the present invention during transportation.

FIG. 2 is a cross-sectional view showing a state before meal in the lunch container in FIG.

FIG. 3 is a cross-sectional view showing a state of a lunch container according to another embodiment of the present invention during transportation.

FIG. 4 is a cross-sectional view showing a state before a meal in the lunch container in FIG.

FIG. 5 is a cross-sectional view showing a state of a conventional bento container during transportation.

FIG. 6 is a cross-sectional view showing a state before meal of the lunch container in FIG.

FIG. 7 is a cross-sectional view of another conventional bento container.

[Explanation of symbols]

 1, 10 ... Lunch container 2, 11, 11a ... Storage part 3 ... Bending part 4 ... Complementary wall 5, 12 ... Adhesive part 6, 13 ... Film 7 ... Rice 8 ... Tools

Claims (1)

[Claims] 1. A bento container in which food such as rice is packed in an aseptic manner and is formed in a bowl shape, and is provided so as to surround a storage portion for storing rice and an opening of the storage portion. And a tubular complementary wall that faces the periphery of the opening of the storage portion with the bent portion sandwiched therebetween. The bent portion allows the complementary wall to move upward. A special bento container.