Technological method for realizing smooth tear opening of paper packaging box and paper packaging box

Abstract

The invention relates to a technological method for realizing a smooth tear opening of a paper packaging box and the paper packaging box. The packaging box is formed by performing die cutting on a white cardboard and folding and adhering the cut white cardboards. The smooth tear opening of the paper packaging box comprises positive half knife lines and negative half knife lines which are parallel to each other and are arranged in a staggering manner; and the positive half knife lines are located on the outer surface of the packaging box, and the negative half knife lines are located on the inner surface of the packaging box. The technological method comprises the following steps: carrying out die cutting through an etching knife die arranged on a die cutting table to form the negative half knife lines, and carrying out die cutting through a decarburized steel knife die arranged on a die cutting plate to form the positive half knife lines, thus completing forming of the negative half knife lines and the positive half knife lines through one-step cutting. By the use of the etching knife die and the decarburized steel knife die, the technological method realizes one-step cutting completion of the positive and negative half knife lines, so that the die cutting efficiency is high, and the die cutting quality is high; meanwhile, the tear opening of the packaging box manufactured through the method is smooth; and compared with a conventional dentate line tear opening, the tear opening is more attractive in appearance.

Description

Technical field [0001] The invention relates to the technical field of carton packaging, in particular to a process method for smoothly tearing a paper packaging box and a paper packaging box. Background technique [0002] The most commonly used packaging boxes are paper packaging boxes. In order to facilitate opening, most of the packaging boxes on the market are usually structured with zipper knives or tooth knives to achieve the purpose of creating tears, but the zipper knives or tooth knives are formed Rough edges of the tear not only affect the appearance of the packaging box, but the paper scraps on the surface of the tear may also cause pollution to the inner packaging product. Although paper packaging boxes with smooth torn edges have appeared on the market, the production process is often cumbersome, with high processing costs and long processing times. Summary of the invention [0003] In order to solve the above technical problems, the first objective of the present i...

AI Technical Summary

Problems solved by technology

[0002] The most commonly used packaging box is the paper packaging box. In order to facilitate opening, most of the packaging boxes currently on the market are usually designed with a zipper knife or toothed knife in structure to achieve the purpose of creating a tear, but the zipper knife or toothed knife formed The edge of the tear is rough, which not only affects the appearance of the packaging box, but the paper scraps on the surface of the tear may also pollute the inner packaging products

Although there are also paper packaging boxes with smooth tearing on the market, the production process is often cumbersome, with high processing costs and long processing time.

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