Conventionally polyvinyl chloride (PVC) and bi-axially oriented polyamide (BOPA) - commonly known as BON - films have been extensively used in cold formed pharma packaging industry. A typical Alu-Alu blister laminate comprises three layers - 25 micron BOPA, 60 micron soft aluminium foil and 60 micron PVC.
Eliminating BOPA and PVC films in the cold formed Alu-Alu laminate blister pack for pharmaceuticals has for long remained a daunting task for packaging experts.
A conventional cold formed pharmaceutical blister back when dumped in the land fill gives away chlorine upon coming in contact with sunlight. This is extremely harmful for the environment.