Officinal PVC/PVDC coated film is firstly development and used by German factory in the 1940s. In practical application process, PVDC has good obstruct ability , it plays a good moisture-proof effect to the product in packing.
PVDC material itself is the latex character, has quite big brittleness after the solidification. In the coating process and post-processing, the pivotal technical is to reduce its brittleness, make it normally used in the room temperature environment. Before, the technical ability is too poor to do so. That is one of the technical difficulties of PVDC compound material.
On the basis of oversea craft brother experience, our technician first produces successfully in China. It mainly takes PVC film as the basal material, then coated PVDC(import from BASF in Germany). During the production processing, the temperature, coated quantum, times and other important considerations are checked strictly to make sure that the product can meet the standard of the same product in the internatiolal. The obstruct ability is 5 times higher than common PVC. Meantime it has a certain rigidity, flexility and can be widely used in packaging various solid medicine, especially for easy humidity absorb medicine.


Remarks:
According to the investigation, presently 80% medicine using such packaging materials, but PVC film that widespread used in China could infiltrate the gas and liquor 6 months later in the boom temperature condition. It has a great impact on products. But if using PVDC, the period for protection can really reach at least 2 years.