JP3023311U - Packaging container with lid - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] A foamed polystyrene food packaging container including a container body and a lid body, in which when the container lid body is grasped and lifted, the container body containing the food is dropped. (EN) Provided is a packaging container with a lid which can be easily and surely attached and detached by a person by hand while preventing it. SOLUTION: A substantially rectangular container body 1 having a rounded corner portion 3 and a lid body 2 covering the container body 1 are provided inside the corner portions 3 at the four corners of the other lid body 2, or It has a recess 8 for fitting the peripheral edge 5 of the container body 1.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a one-way packaging container, such as a food packaging, which comprises a container body and a lid formed from a foamed polystyrene sheet.

[0002]

[Prior art]

 Conventionally, in a substantially rectangular expanded polystyrene sheet food packaging container, the container body is covered with a lid having an outer peripheral portion larger than the outer periphery, or the outer peripheral portion of the container main body is smaller than the outer periphery of the main body. The container body and the lid were locked in a manner that the lid was fitted in a drop-in manner. When locking the lid in this way, raise the outermost periphery of the container body almost vertically or lower the outermost periphery of the lid almost vertically to form a slightly longer shape. It was common to lock the container body by fitting it into the elongated outermost part and pressing it.

[0003]

[Problems to be solved by the device]

 However, in the conventional foam polystyrene sheet container described above, since the edges of the container are almost linear except for the corners, the friction force due to the pressure contact between the container body and the lid is small, and the lid is fixed on the container body. In order to lock with strength, the two were pressed against each other at the rounded part near the corner of the container and the frictional force there was applied. Therefore, if the container body and lid are not sufficiently locked, the container body may fall out and the food contents may be spilled when the container lid is grasped and lifted after storing the food contents. It was

The present invention has been proposed in view of the above-mentioned circumstances, and when food is almost filled in the container body, the container body may fall off even if only the lid portion is grasped and lifted. It is an object of the present invention to provide an expanded polystyrene sheet-made packaging container with a lid, which can be easily and surely put on and taken off by a person by hand without any problem.

[0005]

[Means for Solving the Problems]

 That is, the present invention relates to a packaging container including a substantially rectangular container body having a rounded corner at a corner, which is thermoformed from an expanded polystyrene sheet, and a lid body that covers the container body. A packaging container with a lid, characterized in that it has concave portions for fitting the other peripheral portion of the lid body or the main body of the container inside the corner portions of the four corners.

[0006]

[Embodiment of device]

 The fitting recesses formed at the four corners of the container body or lid of this packaging container with a lid have a length of one place that is the entire circumference of the peripheral edge of the container lid or container body. 1% or more and 13% or less, preferably 4% or more and 9% or less. When the length of one concave portion is less than 1% of the length of the peripheral portion of the container lid or the container body, when the lid and the container body are fitted together and the lid is closed, the force that locks both is small. Therefore, it is not possible to obtain a sufficient fall-off prevention effect. Also, if it exceeds 13% of the length of the peripheral edge, the force that locks both parties becomes unnecessarily large and they can be easily attached and detached. It is not preferable because it becomes difficult and it becomes difficult to release the pressure of water vapor generated from the inside when heated in a microwave oven or the like.

The depth of the recess for fitting is preferably in the range of 0.2 mm to 2.0 mm. If the depth is less than 0.2 mm, a sufficient fitting effect cannot be obtained, and if it exceeds 2.0 mm, the fitting effect is too great and the lid becomes difficult to open, and it becomes difficult to form a recess during molding. Therefore, it is not preferable.

The lidded packaging container according to the present invention can be manufactured by heating and softening a foam polystyrene sheet and using a male mold and a female mold, for example, by a vacuum molding method or the like.

With the above-mentioned structure, the packaging container with a lid according to the present invention is configured such that the container body is filled with the content food, the lid body is covered, and the four corners are slightly pressed by hand, so that the mating concave portion of the mating side is formed. The peripheral edges of the four corners are engaged so that the container body and lid are stably locked, and even if only the lid is lifted, it falls off due to the weight of the food contained in the container body. Can be effectively prevented. When removing the lid, for example, hold the container body with one hand and pull one or two of the four corner engaging portions of the lid lightly with another hand to engage the lid easily. Is released, the lid can be removed from the container body. If the container is a drop lid type, slightly press the opposite corners of the container body to deform the container body, and with the other hand hold the convex portion of the lid body and pull it, the engagement is easily released and removed. be able to.

[0010]

【Example】

 Hereinafter, the packaging container with a lid according to the present invention will be specifically described based on the embodiment shown in the drawings. FIG. 1 is a perspective view showing an embodiment of a packaging container with a lid according to the present invention, FIG. 2 is a plan view thereof, and FIGS. 3 and 4 are taken along lines AA and BB in FIG. 2, respectively. It is an expanded sectional view.

In FIGS. 1 to 4, 1 is a container main body, 2 is a lid, and a vacuum molding machine (manufactured by Chuo Kagaku Co., Ltd., 1 piece) using a foamed polystyrene sheet (manufactured by JSP, LF210NAMI) Vacuum forming machine). The container body 1 has a substantially square shape in a plan view, a box-like opening whose upper surface is slightly wider than the bottom surface, four corners 3 are rounded, and an upper edge is slightly bent outward along the entire circumference. 4 are formed.

The lid body 2 is formed in a size shape that covers the entire upper surface opening of the container body 1, and the peripheral edge portion 5 except for the four corners is as shown in the enlarged cross section of FIG. The bent portion 4 is slightly inwardly contacted via the stepped portion 6 of the lid body 2 so as to come into contact with the bent portion 4. As shown in the enlarged sectional view of FIG. 4, concave portions 8 for fitting are formed in the four corner portions 7 of the lid body 2, and the upper edge bent portions 4 of the container body 1 are fitted therein. Thus, the container body 1 and the lid 2 are locked. In this embodiment, the length L (FIG. 2) of the recess 8 was 30 mm (5.4%) and the depth was 1.2 mm with respect to the outer peripheral length of 560 mm of the lid 2. The upper part of the stepped portion 6 is further raised by one step, and the entire lid body 2 is formed in a shape in which the central portion is flat and slightly depressed (FIG. 1).

The body of the packaging container with a lid having this configuration was filled with 300 g of cooked rice, the lids were fitted together and closed, and then the test of lifting only the lid portion of the container was performed on 50 samples. As a result, it was 0 that the container body had fallen off from the lid.

For these samples, an attempt was made to open the container by holding the container body with one hand and lifting two adjacent four corners of the lid with the other hand. Then, it required a little force, and it was not particularly difficult to open.

As a comparative example, as a result of attempting a similar test with a conventional container of the same material having no recesses for fitting at the four corners, 3 out of 50 dropped out.

[0016]

[Effect of device]

 As described above, the container for packaging with a lid according to the present invention has the conventional problems because the container body or the lid body covering the container body is provided with concave portions for fitting at the four rounded corners. It is possible to effectively prevent the body of the container from falling off due to the weight of the food contents when you grab and lift only the lid of the container, and it is extremely easy to attach and detach the body and the lid. It will be easy.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a packaging container with a lid according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 4 is an enlarged cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 1. Main body of packaging container 2. Same as above 3. Corner of container body 4. Upper edge bent portion of container body 5. Edge of lid 6. Step of lid 7. Corner of the lid 8. Recess for fitting

Claims (1)

[Scope of utility model registration request] 1. A substantially rectangular container body having rounded corners, which is thermoformed from an expanded polystyrene sheet.
In a packaging container consisting of a lid body that covers the container body, the other lid body or the peripheral edge portion of the container body is fitted inside the corner portions of the four corners of the container body and the lid body. A packaging container with a lid, which has a recess for fitting.