OP/AL/HSL PTP aluminum blister foil is a composite aluminum foil material specifically designed for pharmaceutical blister packaging. Its structure consists of a protective layer (OP), an aluminum foil substrate layer (AL), and a heat-sealing layer (HSL/VC). It features high barrier properties, printability, easy heat sealing, and good mechanical properties, and is widely used in the independent sealing packaging of pharmaceuticals, food, …