Characteristics of local corrugation collapse of corrugated cardboard

First, the area of corrugation changes greatly. In terms of per square meter, the area of corrugation is as little as a few square centimeters, and as much as a thousand square centimeters;

Second, the corrugation is periodic. Along the production direction of single-sided machine, there are periodic but not identical corrugations on corrugated board;

Third, the corrugation area is larger in the middle and smaller at both ends along the horizontal corrugation, and the corrugation collapse is irregular; www.chinacartonmachine.com

Fourth, there is obvious degumming in the corrugated area, and the local thickness of corrugated board is significantly reduced, some of which are only 3 times the standard thickness of Xiangqing.

In mass production, the existence of such partial corrugation defects will affect product quality, cause a large number of secondary waste products, lead to a substantial increase in manufacturing costs, and enterprises suffer. Such three-layer, five layer or seven layer corrugated paperboard will inevitably produce secondary waste products, such as the sum of its degumming area is greater than the national standard 20cm2/m2, the edge pressing strength is greatly reduced, the paperboard thickness is lower than the national standard, the printed patterns are false and solid, and the words are blurred, which will seriously affect the overall quality of carton products.

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