PVDC is also a very popular and commonly used pharmaceutical packaging material, also known as PVC composite film. It is the most commonly used blister packaging material in pharmaceutical packaging. About 67% of blister packaging use PVDC composite film. PVDC composite film is a material with the best barrier properties and has an excellent barrier effect on air, moisture, and fine particles. It can be used under high temperature and high humidity conditions, and other properties are similar to PVD, such as good compatibility, ease to form and seal, and low price.