Composite corrugated cardboard

Abstract

The invention relates to cardboard, and discloses a composite corrugated cardboard, comprising a face paper layer, a corrugated core layer and an inner paper layer, and the corrugated core layer includes a plurality of supporting paper blocks between the inner paper layer and the face paper layer and supplementary paper blocks There is a supplementary channel between the supporting paper blocks, and the supplementary paper block slides in the supplementary channel, and the middle part of the supplementary paper block protrudes to form an abutment end, and the abutment end abuts between the inner paper layer and the surface paper layer, supporting One end of the paper block extends toward the supplementary channel to form a leading end, the side of the leading end is bent inward and abuts inside it, the side of the leading end is in contact with the side of the abutting end, and the distance between adjacent leading ends is less than the maximum of the supplementary paper block The minimum width of the section; if a part of the composite corrugated cardboard is crushed by external force, squeeze the supplementary paper blocks next to this part, let the supplementary paper blocks fill into the crushed part, let the part bulge, and the supplementary paper blocks in other parts will be in order Fill the gap and realize self-healing after partial damage.

Description

technical field [0001] This invention relates to cardboard, and more particularly, it relates to a composite corrugated cardboard. Background technique [0002] As the most important and widely used packaging material, corrugated cardboard has the advantages of light weight, low cost, easy processing, convenient storage and transportation, which are not available in wood packaging and metal packaging, while its U, V, UV, etc. The flute structure is also divided into three layers of E flute, three layers of B flute, three layers of A flute, five layers of BE flute, five layers of AB flute and seven layers of ABE flute, which greatly improves the compression and burst resistance of the carton. It has high mechanical strength, can withstand bumps and falls during handling, and is a necessary material for modern packaging. [0003] The corrugated paper of the corrugated cardboard in the prior art is mostly arranged in the corrugated core layer transversely in a wave shape. The...

AI Technical Summary

Problems solved by technology

The above-mentioned existing technical solutions have the following defects: the cardboard with this structure has poor structural strength, and the corrugated core layer in the corrugated cardboard will often be deformed due to compression during use, and the strength of the corrugated core layer support will be reduced after deformation. greatly reduced, thereby reducing the overall strength of the corrugated cardboard, unable to adapt to different impacts during the handling process, and easily causing the inner layer of the corrugated cardboard to fail or even be damaged, affecting the safety of the packaged goods

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