The invention discloses a preparation method of a degradable environment-friendly shopping bag. The preparation method is as follows: 1) Take an appropriate amount of water, heat it to 75–85°C, add 100 parts of plant starch, and stir to form starch paste; 2) Put 1–2 parts of stearic acid, 1.5–2.5 parts of calcium stearate, 1.5–2.5 parts of titanate coupling agent, 4–6 parts of heavy calcium carbonate powder, 2–4 parts of liquid paraffin, 14–16 parts of ethylene-methyl acrylate copolymer, 15–17 parts of low-density polyethylene, 6–8 parts of linear polyethylene, and 13–15 parts of high-density polyethylene into a high-speed kneader in proportion, heat to 115–125°C and start stirring, stir for 14–16 minutes, add starch paste, and stir for 8–10 minutes to obtain a mixture; 3) Put the mixture into a twin-screw extruder for granulation at 165–175°C, then use a single-screw blow molding machine for blow molding into a film at 160–170°C, and then make a shopping bag.
Country Code: CN
Application Number: CN201210464073.7
