Preparation method of high-strength waterproof corrugated board

Abstract

The invention discloses a preparation method of a high-strength waterproof corrugated board. The preparation method comprises the following steps: preparing an adhesive glue; applying the glue by a glue applicator to corrugated base paper through a fixing guide roller and a swinging guide roller to respectively obtain a first corrugated layer, a second corrugated layer and a third corrugated layer, respectively adhering the first corrugated layer, the second corrugated layer and the third corrugated layer to a first surface paper layer, a second surface paper layer and a third surface paper layer to form a first single-surface single-arc corrugated board, a second single-surface single-arc corrugated board and a third double-surface single-arc corrugated board, and adhering the third corrugated layer to the third surface paper layer and a fourth surface paper layer to form a third double-surface single-arc corrugated board; adhering the first single-surface single-arc corrugated board,the second single-surface single-arc corrugated board and the third double-surface single-arc corrugated board, conveying the first single-surface single-arc corrugated board, the second single-surface single-arc corrugated board and the third double-surface single-arc corrugated board into a vacuum curing channel for heating and curing; coating with a waterproof coating; and curing. The arrangement of the preparation method is reasonable, the preparation process is convenient, and the cost is moderate.

Description

technical field [0001] The invention relates to a corrugated cardboard production process, in particular to a method for preparing a high-strength water-resistant corrugated cardboard. 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 progress. However, corrugated cardboard is made ...

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