PVC (polyvinyl chloride) and PVDC (polyvinylidene fluoride) films for blister packaging are common packaging materials, widely used in pharmaceutical, food and other industries. PVC film materials have good mechanical strength, flexibility and corrosion resistance. Good processing performance, easy to thermoplastic processing molding, good chemical stability, good corrosion resistance to most acids, alkalis and salts, good flame retardant, not easy to burn. …