High-intensity waterproof type corrugated paper board

Abstract

The invention discloses a high-intensity waterproof type corrugated paper board. The high-intensity waterproof type corrugated paper board comprises a surface layer, a middle layer and an inner layer which are bonded by an adhesive, wherein the surface layer and the inner layer are paper board layers; the middle layer is a corrugated paper layer; a water-repellent coating layer is additionally arranged on the upper surface of the surface layer, and comprises the main components including water-borne acrylic resin, short glass fibers, relevant additives and a solvent. The invention discloses the high-intensity waterproof type corrugated paper board which is reasonable in structure design; the additionally arranged water-repellent coating layer on the surface layer endows the corrugated paper board with good waterproof performance and surface intensity, the scratching probability of the surface of the corrugated paper board can be effectively reduced, and the good use performance of the corrugated paper board can be guaranteed.

Description

technical field [0001] The invention relates to a corrugated cardboard, in particular to a novel corrugated cardboard with high surface strength and waterproof function, which belongs to the technical field of packaging materials. Background technique [0002] Corrugated cardboard is a multi-layer adhesive body, which consists of at least one layer of corrugated paper core layer and one layer of cardboard. Corrugated cardboard has high mechanical strength and can withstand collisions and falls during cargo handling. It is mainly used to make cartons, the sandwich of cartons and the outer packaging of fragile goods. Corrugated cardboard is less affected by temperature, has good shading performance, and is generally less affected by humidity, but it is not suitable for long-term use in an environment with high humidity. [0003] Recently, the number of corrugated cardboard manufacturers in my country has been increasing, and their production technology has also made great pro...

AI Technical Summary

Problems solved by technology

However, corrugated cardboard is made of fiber base paper, which is greatly affected by environmental factors. When used in an environment with high humidity, the strength of corrugated cardboard is likely to decrease after absorbing moisture, which will cause the function of the corrugated box to be lost and cause product damage.

In the current technology, corrugated cardboard is improved by coating and impregnation methods. Among them, the process flow of the impregnation method is complicated and the cost is high; while the coating method cannot take into account the water resistance and surface strength of the corrugated cardboard. When scratched, moisture can invade the inside of the corrugated cardboard, resulting in loss of strength and loss of function of the corrugated cardboard

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