Stackable artcle-packaging container

Abstract

A stackable article-packaging container includes an accommodating unit including a receptacle bottom plate and a plurality of slant sidewalls extending from edges of the receptacle bottom plate so as to define a receptacle space, a lid unit including a cover plate and a plurality of slant sidewalls extending from edges of the cover plate so as to define a receptacle space, and a locking unit including a locking bottom plate and a plurality of slant sidewalls extending from edges of the locking bottom plate so as to define a receptacle space. The accommodating unit and the locking unit are disposed at opposite side of the lid unit.

Description

TECHNICAL FIELD [0001]The present invention relates to a stackable article-packaging container and, more particularly, to a container which is stackable when articles are not accommodated therein and which is provided with a safe locking unit for preventing the container from being unintentionally opened during transportation or storage. Furthermore, the present invention pertains to a container which is stackable and is provided with a safe locking unit and which is capable of safely packaging fragile articles such as eggs or the like piece by piece and is capable of preventing the contents of articles from being leaked to the outside even when the articles are damaged.BACKGROUND, ART[0002]A pulp molding technique is known as a method for manufacturing a paper container which packages fragile articles such as eggs or the like piece by piece. In case of manufacturing an egg packaging container with the pulp molding technique, a lid can be one-piece molded with the container if the s...

AI Technical Summary

Benefits of technology

[0029]The stackable article-packaging container according to the present invention is provided with the accommodating unit, the lid unit and the locking unit. The accommodating unit is received within the locking unit such that the slant sidewalls of the accommodating unit make contact with the slant sidewalls of the locking unit. The locking unit has a locking function of keeping the container against opening. Thus, the lid unit is prevented from being opened during storage or transportation. Moreover, the lid unit of the container can be easily opened by rupturing the rupture portion formed in the lid unit.

[0030]If the stackable article-packaging container according to the present invention is further provided with the corrugated insertion unit, it is possible to accommodate the articles so as not to make contact with the receptacle bottom plate, the cover plate and the slant sidewalls of the container. Thus, an external impact applied

Problems solved by technology

However, if the size of the container is large, it is difficult to one-piece mold a lid with the container.

For example, in case of a large container for accommodating 30 pieces of eggs, it is difficult to one-piece mold a lid with the container.

For that reason, a separate lid made of a synthetic resin is used This is not environmentally friendly.

However, it is difficult to directly print an indication such as a trademark or a manufacturer of articles on the surface of the lid.

This may lead to an increased manufacturing cost.

Moreover, when manufacturing an article-packaging container through the use of the pulp molding technique, a drying process for drying a molded container is needed and a great deal of energy is consumed in the drying process.

However, the container shown in FIG. 9 of U.S. Pat. No. 4,462,537 is not stackable because the sidewalls of the container interfere with each other.

If the sidewalls are partially removed for a stacking purpose, the strength of the container becomes weak.

In case where the container is not stackable, a la

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