▎ 摘　　要

NOVELTY - High-barrier polyvinyl chloride medicinal packaging film comprises 100 pts. wt. polyvinyl chloride resin powder, 1-2.5 pts. wt. stabilizer, 0.5-1.5 pts. wt. internal slip agent, 0.2-1 pts. wt. slip agent, 1-4 pts. wt. processing aid, 3-9 pts. wt. methyl methacrylate resin and 0.1-3 pts. wt. graphene. USE - Used as high-barrier polyvinyl chloride medicinal packaging film. DETAILED DESCRIPTION - High-barrier polyvinyl chloride medicinal packaging film comprises 100 pts. wt. polyvinyl chloride resin powder, 1-2.5 pts. wt. stabilizer, 0.5-1.5 pts. wt. internal slip agent, 0.2-1 pts. wt. slip agent, 1-4 pts. wt. processing aid, 3-9 pts. wt. methyl methacrylate resin and 0.1-3 pts. wt. graphene. An INDEPENDENT CLAIM is also included for preparation of high-barrier polyvinyl chloride medicinal packaging film comprising (i) mixing 100 pts. wt. polyvinyl chloride resin powder, 1-2.5 pts. wt. stabilizer, 0.5-1.5 pts. wt. internal slip agent, 0.2-1 pts. wt. slip agent, 1-4 pts. wt. processing aid, 3-9 pts. wt. methyl methacrylate resin and 0.1-3 pts. wt. graphene in high-speed mixer, raising the temperature to 100-120 degrees C with high-speed at 2000-3000 revolution per minute, (ii) feeding the material present in high-speed mixer into low-speed mixer, mixing at 40-60 degrees C with a low-speed at 50-500 revolution per minute, (iii) feeding low-speed mixed materials into extruder extrusion plasticization, extruder temperature of 140-200 degrees C, (iv) transferring plasticized material obtained in step (iii) into calendering section, reacting at 150-220?OC, and cooling to 30-60?OC to obtain final product.