Application of polymer protective film

The wholesale polymer protective film products are widely used in the packaging of various products such as beer, beverages, building materials, food, medicine, sterilized tableware, cultural and sports goods, craft gifts, printed matter, etc., especially irregular foam products or combined packaging of products. In addition, because PVC is a heat-sensitive plastic, there must be no protective film of heat stabilizer in the formula. Generally, the amount of heat stabilizer in PVC formulations is 5 to 8PHR, and the heat stabilizer is not enough to prevent PVC from decomposing at the hot melt shaping temperature. The more heat stabilizers, the higher the temperature at which the hot melt flows. In order to improve the melt processability of PVC, it is necessary to add processing aids to the PVC formulation to improve the solubility of the PVC formulation. Practice has proved that for rigid PVC products, melt molding cannot be processed without processing aids, and for soft PVC quality, it is difficult to mold without processing aids or insufficient. PVC processing aids are mainly acrylic resins that are compatible with PVC films, as well as chlorinated polyethylene, chlorosulfonated polyethylene, methyl styrene polymers, MBS, ABS and so on. Next: The performance of PE heat shrinkable film II Previous: The practice of PE heat shrinkable film