Production process and characteristics of PVC film

The production process of PVC film is not complicated. The ordinary production line is generally composed of a roller press, a printing press, a back coating machine and a cutting machine. The thickness is produced by direct stirring of the roller press, roller rotation and high temperature rolling. The film is only 0.3mm to 0.7mm, and the pattern is printed on the front side of the film by a printing machine at the same time of production, and a back coat is attached to the back side of the film by a back coater. Don't underestimate this back coating.

The back coating is composed of special materials and is a high-energy affinity agent. It is precisely because of this back coating that the PVC film can be tightly fused with the medium-density board or other boards, and it will not be glued for ten or fifteen years. The problem with ordinary face masks is that they cannot solve the problem of film shedding. Because the whole production process is carried out at high temperature (the temperature in the roller press reaches 220 degrees).