▎ 摘　　要

NOVELTY - The plastic printing ink comprises 30-50 pts. wt. chlorinated polypropylene resin, 15-35 pts. wt. water-based acrylic resin, 12-22 pts. wt. nano-alumina, 6-15 pts. wt. glycerin monostearate, 8-20 pts. wt. ethanol, 1-5 pts. wt. chitosan-graphene composite, 1-5 pts. wt. additives, 1-5 pts. wt. hollow glass microspheres, and 1-2 pts. wt. walnut shell powder. 1-3 pts. wt. dextrin is also included in the plastic printing ink. USE - Plastic printing ink. ADVANTAGE - The plastic printing ink ensures good acid alkaline resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing plastic printing ink, which involves: (A) mixing nano-alumina in ethanol with stirring to form a mixture; (B) adding chlorinated polypropylene resin and aqueous acrylic resin in the formed mixture with stirring; and (C) adding chitosan-graphene composite and remaining raw materials with ultrasonic grinding for 30-40 minutes to form the plastic printing ink.