Packaging container with flared peripheral clearance

Abstract

A packaging container mainly includes a box having an open top and a first flange horizontally outward extended from a periphery of the open top, and a cover having a second flange horizontally outward extended from a periphery of the cover corresponding to the first flange. The first and the second flange are provided at corresponding positions with complementary recess and projection belts that fitly engage with each other to enhance connection of the cover to the box. Outer edges of the first and the second flange are bent downward and upward, respectively, to form a flared peripheral clearance between the cover and the box, allowing the cover to be easily removed from the open top of the box at the flared peripheral clearance.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a packaging container for foodstuff, and more particularly to a packaging container that has increased contact area between its box and cover to ensure firm closing of the cover to the box while the cover could be easily removed from the box at a flared peripheral clearance of the packaging container. The packaging container is also provided at the cover with a vent, protecting the packaging container heated in a microwave stove against deformation or bursting open. BACKGROUND OF THE INVENTION [0002] Living in a busy modern society, all people wish to have their food processed and packaged in a convenient be carried without easily becoming spilt. There are various kinds of fast food that require different manners of packaging. Many different designs have been developed for packaging food stuff. FIG. 5 shows a most common conventional packaging container for foodstuff that generally includes a box and a cover. For the cov...

AI Technical Summary

Benefits of technology

[0004] A primary object of the present invention is to provide a packaging container for foodstuff that is easy to manufacture, has increased contact area between its box and cover to ensure firm closing of the cover to the box while the cover could be easily removed from the box at an outer periphery of the packaging container, and is protected against deformation or bursting open when being heated in a microwave stove.

[0005] To achieve the above and other objects, the packaging container of the present invention mainly includes a box having an open top and a first flange horizontally outward extended from a periphery of the open top, and a cover having a second flange horizontally outward extended from a periphery of the cover corresponding to the first flange. The first and the second flange are provided at corresponding positions with complementary recess and projection belts that fitly engage with each other to enhance connection of the cover to the box. Outer edges of the first and the second flange are bent downward and upward, respectively, to form a flared peripheral clearance between the cover and the box, allowing the cover to be easily removed from the open top of the box at the flared peripheral clearance.

Problems solved by technology

While such downward bent flange on the cover allows the cover to tightly close to the box, it prevents easy removal of the cover from the box once the cover is closed to the box, and thereby causes inconvenience to a user in opening the packaging container.

Moreover, the packaging container tends to burst open when the periphery thereof is subjected to collision or impact.

Another problem with the conventional packaging container for foodstuff is the whole container tends to deform or burst open when it is heated in a microwave stove.

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