▎ 摘　　要

NOVELTY - Preparing medicine packaging composite film with super peel strength comprises e.g. providing high-pressure polyethylene, linear low-density polyethylene, polytetrafluoroethylene, and 5% methyl silicone oil, adding high-pressure polyethylene and linear low-density polyethylene in the mixer, adding methyl silicone oil to wet surface of high pressure polyethylene and linear low density polyethylene, preparing mixed material into nanoparticles with a twin-screw granulator, mixing at high speed for 10 minutes, screw extrusion molding, cooling, carrying out high-speed mixing, screw extrusion molding, cooling, modifying the tackifying resin, dissolving dehydrated hydroxy-terminated nitrile rubber in N,N-dimethylformamide, adding freeze-dried graphene oxide powder and ultrasonically processing, preparing nanoparticle into the composite film and coating an ethylene-acrylic acid copolymer coating to outer layer of four-layer co-extruded film by an extruder. USE - The method is useful for preparing medicine packaging composite film with super peel strength, which is used in medicine industry. ADVANTAGE - The method adopts nano-aluminum-containing nano-masterbatch as raw material of reinforcement layer and prevents the delamination of medicine packaging. The medicine packaging composite film has relatively high peel strength and improved peeling property. The medicine and medicine packaging has excellent adhesiveness, heat sealing property, and heat resistance. DETAILED DESCRIPTION - Preparing medicine packaging composite film with super peel strength comprises (S1) providing 30-60% high-pressure polyethylene, 20-40% linear low-density polyethylene, 10% polytetrafluoroethylene, and 5% methyl silicone oil according to mass ratio, adding the high-pressure polyethylene and linear low-density polyethylene in the mixer, starting the machine, adding methyl silicone oil to wet the surface of high pressure polyethylene and linear low density polyethylene, adding polytetrafluoroethylene, allowing the PTFE stick to the surface of high pressure polyethylene and linear low density polyethylene, and preparing mixed material into nanoparticles with a twin-screw granulator, (S2) providing nano-aluminum, nano-titanium oxide, nano-silicon dioxide and nano-attapulgite, mixing at high speed for ten minutes, screw extrusion molding, cooling and cutting to obtain nano-composite particles, providing nanocomposite particles, low density ethylene, linear low density polyethylene, ethylene bisstearamide, polytetrafluoroethylene, methoxysilane coupling agent, carrying out high-speed mixing, screw extrusion molding, cooling and cutting to obtain nano-masterbatch, providing nano masterbatch, fluorinated ethylene propylene copolymer and methyl silicone oil, mixing with a mixer, and then using a twin-screw granulator to form nanoparticles, (S3) providing metallocene polyethylene, fluorinated ethylene propylene copolymer and methyl silicone oil and aluminum bar, form nanoparticle with twin-screw granulator after mixing with mixer, (S4) modifying the tackifying resin, dissolving the dehydrated hydroxy-terminated nitrile rubber in N,N-dimethylformamide, adding freeze-dried graphene oxide powder and ultrasonically processing for 1 hour to obtain the N,N-dimethylformamide solution of graphene-based toughening agent, adding epoxy resin, reacting to obtain modified tackifying resin, mixing polyethylene-methyl methacrylate, tackifying resin, fluorinated ethylene propylene copolymer and methyl silicone oil with a mixer to form nanoparticles with a twin-screw granulator, and (S5) preparing the nanoparticle into the composite film with thickness of 0.1mm with four-layer co-extrusion casting film production unit, and coating an ethylene-acrylic acid copolymer coating of 3-5 μm to the outer layer of the four-layer co-extruded film by an extruder. An INDEPENDENT CLAIM is also included for a medicine packaging composite film.