JP3050172U - Food containers - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container which can be deformed by a negative pressure generated inside when a container sealed under a high temperature condition is subsequently cooled, is in a normal state before a negative pressure in the container is formed. Provided is a food container having a novel shape that can be stably placed on a flat surface. SOLUTION: At least three deformable portions (2) which are depressed inward by a negative pressure in a container accompanying cooling after being sealed at a high temperature are formed in advance at the bottom in advance, and the lowest portions of the deformable portions in a normal state are formed. Are on substantially the same plane.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to food containers, and more particularly, to a novel shape of containers that can be deformed by negative pressure created therein when the containers are subsequently cooled under high temperature conditions.

[0002]

[Prior art]

 In recent years, it has been widely practiced to store foods such as bento, rice, bowls, and various types of prepared dishes in sealed containers and sell them at convenience stores and supermarkets. In particular, foods cooked at a high temperature are placed in a container, and if necessary, sterilized at a high temperature (for example, at a temperature of 100 ° C or higher enough to kill general viable bacteria), and then the container is hermetically sealed. Products that have been commercialized in this way are expected to further increase in demand because they can achieve substantial sterilization and can be stored for a relatively long time.

[0003]

[Problems to be solved by the invention]

 However, when the food that has been cooked or sterilized at a high temperature is cooled after being sealed in a container, a negative pressure is generated in the sealed container, which deforms the container so as to be depressed inward. Deformation of the container occurs at the part where the strength is weak, but if it occurs at the lid or side of the container, it will look bad and reduce the commercial value, so it is preferable to provide a deformable part at the bottom of the container in advance. .

However, the negative pressure in the container is formed by cooling after sealing the container. Until then, the deformable portion at the bottom of the container is maintained in its original shape without being depressed inward. Therefore, when the deformable portion caused by the negative pressure is simply formed in the container bottom at the bottom, the container is placed on a plane for the deformable portion maintained in the expanded state. Lack of stability at the time may cause inconvenience in handling containers and transporting cooked food after it has been stored.

[0005]

[Means for Solving the Problems]

 Therefore, an object of the present invention is to provide a food container having a novel shape that can be stably placed on a flat surface even in a normal state before negative pressure in the container is formed.

That is, in the food container according to the present invention, at least three deformable portions which are depressed inward due to the negative pressure in the container due to cooling after being sealed at a high temperature are bulged and formed at the bottom in advance. It is characterized in that the bottom part in a normal state is substantially on the same plane.

[0007]

[Embodiment of the invention]

 1 to 3 show an example of a food container according to the present invention. The container is formed of a material substantially impermeable to oxygen and is sealed at a high temperature on the bottom thereof. Four inwardly deformable portions 2 are formed in advance. The lowermost portions of these four deformable portions 2 in a normal state are provided on substantially the same plane. The container 1 is provided with an optional lid 4 (see FIG. 3, not shown in FIGS. 1 and 3) on the upper end flange 3 after sterilizing the stored cooked food at a high temperature. Hermetically sealed by means.

In the container 1, the bottom portion of the deformable portion 2 is normally provided on substantially the same surface in a normal state, so that the container 1 can be handled alone or the cooked food can be stored and transported to the hermetic sealing machine. Sometimes a stable posture can be maintained.

The deformable portion 2 is depressed inward with the formation of a negative pressure in the container after sealing, and absorbs the negative pressure. FIG. 4 shows the contour 2 ′ after the deformation.

[0010] At least three deformable portions 2 formed on the bottom of the container are required to be stably mountable on a plane at the bottom of each container.

[0011] Since the container of the present invention has a storage area partitioned by the deformable portion 2, it can be used as a container for storing different foods (for example, rice and side dishes) in a plurality of partitioned storage areas. .

[0012]

[Effect of the invention]

 According to the present invention, while a container sealed under high-temperature conditions is subsequently cooled, a deformable portion which deforms inward due to a negative pressure generated inside swells at the bottom of the container. Even in a normal state before pressure formation, the container can be stably placed on a flat surface, so that it is possible to efficiently handle the container and transport the container after storing the food.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the food container.

FIG. 3 is a sectional view taken along the line XX in FIG. 2;

FIG. 4 is a cross-sectional view corresponding to FIG. 3, showing a state in which a deformable portion is depressed inward by negative pressure in the container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 2 Deformable part 2 Outline after deformation of 3 '3 Upper end flange 4 Lid

Claims (1)

[Utility model registration claims] At least three deformable portions which are indented inward by a negative pressure in a container accompanying cooling after being sealed at a high temperature are formed to bulge at the bottom in advance, and the lowest bottom portion of these deformable portions in a normal state is substantially formed. A food container characterized by being on the same surface.