Paper die cutting method for forming any arc on packaging box

Abstract

The invention discloses a paper die cutting method for forming any arc on a packaging box. Paper is divided into a surface layer fiber layer, a core layer fiber layer and a bottom layer fiber layer, wherein a die cutting knife adopts a side-by-side knife mode to cut the surface layer fiber layer and the core layer fiber layer, and meanwhile, the thickness of the surface layer fiber layer and the thickness of the core layer fiber layer are compressed through a knife combining gap, and after plastic deformation is generated between the core layer fiber layer and the surface layer fiber layer ofthe paper, the paper forms any arc along the bottom circumference. According to the paper die cutting method for forming any arc on the packaging box, die cutting is conducted on the back face of thepaper, the fiber of the paper is cut through the knife in a half-cut mode, the stiffness of the paper is reduced, the arc packaging mode can be achieved, the formed arc is natural, and the surface isfree of wrinkles; and a special 0.53mm high-edge knife is adopted as a die cutting knife line, the knives are assembled on a prefabricated plate side by side, the gap formed between knife edges is small, and the napping phenomenon of the paper during die cutting is avoided.

Description

technical field [0001] The invention belongs to the field of packaging box production, in particular to a paper die-cutting method for forming arbitrary arcs on the packaging box. Background technique [0002] There are two types of existing cigarette packaging boxes, one is a machine-packed box, and the other is a hand-packed gift box. The hand-packed gift box is complicated to process, low in efficiency, and high in manual costs. As a fast-moving consumer goods, machine packs are the mainstream form of cigarette packaging. At present, the machine packs on the market are mainly GD packs. The speed of packing cigarettes on the machine is fast, and the stiffness is high after forming, which is convenient to carry. [0003] With the development of the tobacco packaging industry, not only the pattern design of the packaging box has been continuously developed, but also the structure of the packaging box has been continuously innovated. Conventional GD packaging boxes have squa...

AI Technical Summary

Problems solved by technology

[0004] The traditional arc die-cutting adopts the steel mold indentation method, and 9 or 11 indentation lines are usually used to press the paper to form indentations. The production process of the steel mold die-cutting plate is complicated and the cost is high

Due to the limitation of the steel mold processing technology, there must be a certain distance between the indentation line and the indentation line. Therefore, the paper is not smooth after die-cutting, and it is not easy to control the die-cutting pressure. The stiffness of the indentation line after forming is relatively high. When wrapping cigarettes, it is easy to cause problems such as jamming, popping off, bursting lines, slow loading speed, inaccurate arc alignment, and corner leakage.

After forming, the arc of the steel die-cutting is similar to an arc, and the cross-section is composed of polygons instead of a smooth arc, which is not very beautiful. It is difficult to produce an arc with a large angle in this way.

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