▎ 摘　　要

NOVELTY - Polyvinylidene dichloride (PVDC) high-barrier co-extruded self-adhesive film comprises an outer layer, a first adhesive layer, a PVDC layer, a second adhesive layer, a secondary inner layer, and an inner layer arranged in sequence, where the outer layer comprises linear low-density polyethylene, low-density polyethylene, modified graphene and additives, and the secondary inner layer comprises linear low-density polyethylene, low-density polyethylene, metallocene polyethylene and additives. USE - The PVDC high-barrier co-extruded self-adhesive film is used for military protection and dust prevention. ADVANTAGE - The PVDC high-barrier co-extruded self-adhesive film avoids the possibility of dust generating static electricity and weak magnetic field, its water vapor transmission rate reaches about 1 g/cm3x 24 hours, and has excellent moisture-proof effect, and strong pressure stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the PVDC high-barrier co-extruded self-adhesive film, which involves (i) heating blown film mold and six extruders 3 hours before starting the machine, when the temperature of the mold and the extruder reaches the set temperature, heat-preserving for 0.5-1 hour and starting the machine, and (ii) separately mixing the raw materials of the six film layers, sucking to the corresponding extruder through the suction machine, adjusting the speed of the six extruders, when the film surface of the stretched film meets the quality requirements, and measuring and adjusting the thickness, width, and corona by operator to the set requirements.