Different types of paper have different effects on the fastness of pasting boxes. Printing wine boxes, medicine boxes mainly use white cardboard, gray white cardboard, gold/silver cardboard and other special paper. White card paper quantitative higher, good surface smoothness, high flatness, tightness, poor permeability of adhesive. Therefore, in the pasting process, if the surface characteristics are not considered, it may lead to poor adhesion. In this regard, grinding treatment is generally adopted to increase the friction coefficient of the adhesive mouth edge and the permeability of the adhesive to improve the bonding fastness. The bottom layer of gray white board paper is rough, water absorption is strong, and the permeability of adhesive is better, so the bonding fastness is better than white card paper. The surface smoothness and flatness of gold/silver card paper are higher, but they generally need to be coated with film. At this time, the use of film/paper adhesive is conducive to improving the bonding fastness.

Ruian Tianbang Machinery Manufacturing Co., Ltd. specializes in the production of paper lunch box machine, multi-grid (sub-grid) lunch box machine, three-dimensional box forming machine, bento box forming machine, more information, please pay attention to the official website www.tb-jx.com