Why some board mounted pills are covered with a layer of aluminum foil?
Packaging, usually inside the tablet to light, humidity or in this case, is very sensitive. In order to keep the drug will not affect humidity and light quality pills lead to changes, such measures must be taken within the validity period.
Tropical aluminum structure is NY25 / Alu60 / VC, super good barrier properties, but can also punched out in the above pattern, further play publicity. However, once this package apart, tropical aluminum barrier function is not, so to finish as soon as possible.
This package consists of transparent PVC rigid sheet with aluminum foil blister, PVC is currently the most widely used plastic blister pack. PVC barrier is relatively thick aluminum foil 60 microns is worse, resulting in not a long shelf life of drugs. In order to extend shelf life, while the case of pharmaceutical companies without replacing existing equipment, it added outside of large aluminum cover, called tropical aluminum industry.
