It mainly takes PVC film as the basal material, then coated PVDC(import from BASF in Germany) and PE . The obstruct ability is 5 times higher than the common PVC. Meantime it has a certain rigidity, flexible and can be widely used in packaging various easy volatile medicine. The period for protection can really reach the required standard.

    According to the investigation, presently 80% medicine using such packaging materials, but the PVC film that widespread used in China could infiltrate the gas and liquor 6 months later in the room temperature condition. It has a great impact on the product. But if using PVDC, the period for protection can really reach at least 2 years.  PE has good heat seal ability, PVC/PVDC/PE coated film has combined their respective merit to form a new special ideal packaging material.