▎ 摘　　要

NOVELTY - Medicine composite packaging film comprises polyethylene layer, adhesive layer, aluminum foil layer, glue layer and polyester layer. The adhesive layer comprises polyvinyl alcohol, epoxy resin, nano-aluminum oxide, modified ultra-high molecular weight polyethylen fiber, modified graphene and coupling agent. USE - Used as medicine composite packaging film. ADVANTAGE - The packaging film has high barrier property and realizes the separation of aluminum foil layer and polyethylene layer and can be recycled in the hot water. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the packaging film, comprising (1) mixing polyvinyl alcohol and modified ultra-high molecular weight polyethylene fiber, (2) ultrasonically stirring of nano-alumina and modified graphene to obtain modified graphene-supported nano-alumina, (3) adding epoxy resin, modified graphene-loaded nano-alumina and coupling agent to the mixed solution, ultrasonically stirring at 40-50℃ for 0.5-1 hours to obtain adhesive, and coating on one side of the aluminum foil layer to form adhesive layer, (4) pressing the polyethylene film on the adhesive layer to form polyethylene layer, (5) coating adhesive on the other side of the aluminum foil layer to form adhesive layer, and (6) hot-pressing the polyester layer on the adhesive layer to form high-barrier drug composite packaging film.