Corrugated board local collapse characteristics

First, the area of ​​collapse has changed greatly. On a per square meter basis, there are collapsed areas as small as a few square centimeters, and as many as 1,000 square centimeters.

Second, there is periodic collapse, along the production direction of the single-sided machine, cyclical but not exactly collapsed on the corrugated board;

The third is that the area of ​​collapsing collapses along the middle of the corrugation and the middle is small, and the collapse of the dome is irregular;

Fourth, significant degumming within collapsed areas, and the local thickness of corrugated cardboard is significantly reduced, and some are only 30% of the thickness of the standard.

In mass production, the existence of such local collapse defects will affect the quality of the product, resulting in a large number of secondary waste products, resulting in a substantial increase in manufacturing costs, the company suffered. Such a three-layer, five-layer or seven-layer corrugated cardboard will inevitably produce a debonded area whose sum is greater than the national standard of 20cm2/m2, the side pressure strength is greatly reduced, the thickness of the cardboard is lower than that of the country village, and the printing pattern is indefinite, and the text is blurred. The secondary waste products seriously affect the overall quality of the carton products.