Anti-crushing corrugated board

Abstract

The invention discloses a compression-resistant corrugated cardboard. The main points of the technical scheme are as follows: from the outside to the inside, there are face paper, paper core layer and inner paper; The lower paper core layer, the upper paper core layer and the lower paper core layer are all arranged in a parabolic shape, and the extension direction of the upper paper core layer and the lower paper core layer are arranged at an angle. By adopting the above technical scheme, the structure of the traditional paper core layer has been improved. The orientations of the upper paper core layer and the lower paper core layer are different. When extruding force, since the extension direction of the upper paper core layer and the lower paper core layer are set at an angle (that is, they are not parallel to each other), the position of the linear pressure on the other layer must not be along the parabolic groove. The pressure bearing strength is relatively high, and it is not easy to fold over.

Description

technical field [0001] The invention relates to the field of cartons, more specifically, it relates to a compression-resistant corrugated cardboard. Background technique [0002] Corrugated cardboard is one of the commonly used raw materials for packaging cartons. Corrugated cardboard has the advantages of good shock resistance, printability, light weight, and recyclability, so it is widely used in product packaging and other fields. [0003] At present, the common corrugated cardboard is generally made of two layers of kraft paper bonded with a corrugated core. The corrugated core includes an upper paper core layer and a lower paper core layer arranged in a parabolic shape. There are partitions, and the existing corrugated paper cores have the upper paper core layer and the lower paper core layer facing the same direction. In the actual use of this design, the bearing strength of the paper core in the direction of the parabolic extension is low. When a linear pressure (at...

AI Technical Summary

Problems solved by technology

[0003] At present, the common corrugated cardboard is generally made of two layers of kraft paper bonded with a corrugated core. The corrugated core includes an upper paper core layer and a lower paper core layer arranged in a parabolic shape. There are partitions, and the existing corrugated paper cores have the upper paper core layer and the lower paper core layer facing the same direction. In the actual use of this design, the bearing strength of the paper core in the direction of the parabolic extension is low. When a linear pressure (at least two points of force) is applied to the parabolic extension direction (especially at the parabolic groove), the paper core is prone to folding, which limits the packaging and transportation of some special products, such as electronic products, instruments and meters, etc.

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