▎ 摘　　要

NOVELTY - An antimicrobial nano-plastic food packaging material comprises 40-60 pts. wt. polypropylene, 4-8 pts. wt. low density polyethylene, 5-10 pts. wt. nano silver particles, 8-12 pts. wt. graphene, 3-5 pts. wt. chitin fiber, 1-3 pts. wt. allicin, 4-8 pts. wt. bamboo fiber, 4-8 pts. wt. nano tin oxide, 1-3 pts. wt. nano-titanium dioxide, 1-1.5 pts. wt. anti-scratch agent, 5-10 pts. wt. 1,2-dimethylcyclohexane, 1-2 pts. wt. coupling agent and 3-5 pts. wt. UV absorber. USE - Antimicrobial nano-plastic food packaging material (claimed). ADVANTAGE - The packaging material has excellent conductivity, weather resistant effect, high stability, anti-UV effect, anti-aging property, scratch resistant property, high tensile strength and elongation at break, and is economical. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation method of antibacterial nanocomposite food packaging material, which involves taking a variety of materials, weighing nano-tin oxide and nano-titanium dioxide, calcining at 450-550 degrees C for 40-60 minutes, cooling, adding cooled nano-tin oxide, nano-titanium dioxide and the remaining raw materials to the high-speed mixing machine, mixing and dispersing for 20-30 minutes, extruding mixed film material with a twin-screw extruder at the temperatures of 160-175 degrees C, 180-185 degrees C, 185-195 degrees C, 200-215 degrees C and 220-225 degrees C, extruding, granulating, extruding the masterbatch by blown film machine at the plastic extrusion temperature of 100-110 degrees C and the compressed plasticization temperature of 145-160 degrees C and the head temperature of 165-175 degrees C, carrying out plasticized extrusion, pulling the material with the inflation ratio of 1:3-1:5 and the traction ratio of 1:2-1:5, and curling the film material after curing.