Plastic packaging box

Abstract

The invention provides a plastic packaging box. The plastic packaging box is characterized in that a box buckling part extends into a cover buckling part by depending on the inclined surface of a first inclined extension part, so that a clamping edge is clamped at the lower end of a second inclined extension part, and first clamping parts and second clamping parts are buckled together; a third inclined extension part gradually applies downward pressure to the first inclined extension part, so that the first inclined extension part is gradually turned downwards by taking the lower end as a supporting point, inclination is gradually reduced, the transverse size is gradually increased, so that the upper end of the first inclined extension part abuts against the included angle between the third inclined extension part and a third vertical extension part in a sealing mode, the lower end of the first inclined extension part abuts against the outer side of a second vertical extension part ina sealing mode, and the double sealing is achieved automatically; further the tertiary sealing is realized between the first clamping parts and the second clamping parts, and the fourth sealing is realized between the clamping edge and the lower end of the second inclined extension part; and thus, the multiple sealing of a cover body and a plastic box body can be realized automatically while the cover body and the plastic box body are buckled, and the defects that a traditional packaging box is not tight in sealing and internal gas and liquid easily leak are overcome.

Description

technical field [0001] The invention relates to the field of daily life, in particular to a plastic packaging box. Background technique [0002] The structure of the plastic packaging box is known, as the Chinese utility model patent CN201320651003.2 discloses a disposable plastic lunch box, which includes a box body and a box cover that is compatible with the box body. The grid that divides the box body into a plurality of spaces, the outer peripheral edge of the box body is provided with a buckle cover edge connected with the box cover, the grid in the box body is higher than the buckle cover edge, and the middle part of the box cover forms an upward The outer peripheral edge of the box cover is provided with a cover groove that matches the cover edge of the box body, and a plurality of locking teeth are evenly arranged on the inner wall of the cover groove, and the box body and the cover are closed. , the top surface of the grille in the box body is closely attached to t...

AI Technical Summary

Problems solved by technology

[0003] The structure of the aforementioned utility model is roughly similar to that of other plastic packaging boxes on the market. In the actual use process, there are cases where the lid and the box body are not tightly buckled and sealed, and internal gas and liquid leakage are prone to occur. Users bring a lot of trouble, practicality needs to be improved

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