What kind of material is the plastic bag commonly used in supermarkets now?
Then there are some composite materials, such as the very delicate packaging (milk powder and the like), usually OPP and nylon composite.
Another is PP or OPP, which contains bread and crackers. The material is smooth and very transparent, but the tightness is not very good and there is no tension.
1. HDPE is a shopping bag for supermarkets. It feels cool and hard to use. Do not add color, the bag is very dim.2. low density polyethylene, used for packaged food, feels soft and transparent.
