Composite corrugated paperboard

Abstract

The invention relates to a paperboard, and discloses a composite corrugated paperboard which comprises a surface paper layer, a corrugated core layer and an inner paper layer. The corrugated core layer comprises a plurality of support paper blocks and supplementing paper blocks which are arranged between the inner paper layer and the surface paper layer. A supplementing channel is arranged betweenthe supporting paper blocks. The supplementing paper blocks slide in the supplementing channel. The middle part of the supplementing paper blocks protrudes to form an abutting end. The abutting end abuts against the position between the inner paper layer and the surface paper layer. One end of each supporting paper block extends towards the interior of the supplementing channel to form a guidingend, the side surface of the guiding end is bent inwards and abuts against the interior of the guiding end, the side surface of the guiding end makes contact with the side surface of the abutting endand the distance between the two adjacent guiding ends is less than the minimum width of the maximum section of the supplementing paper blocks. If the local part of the composite corrugated board is flattened by external force, the supplementing paper block beside the local part is extruded, the flattened part is filled with the supplementing paper block, the part is raised, gaps are sequentiallyfilled with the supplementing paper blocks at other parts and self-repairing after local damage is realized.

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

Images