It is a highly transparent and flexible soft film. It has high tensile strength, tear strength and good puncture resistance. It takes linear low-density polyethylene as the main raw material and adds a few auxiliary materials to mix uniformly. It is melted and plasticized by the extrusion system and then passed through the machine head and the forming die A new type of packaging material made by single-layer, double-layer, or three-layer co-extrusion salivation process. PE stretch film has good vertical and horizontal cold stretch characteristics, and has greater retraction, long-lasting tightening force, single-sided or double-sided self-adhesive, and appropriate air permeability and moisture permeability, depending on its own viscosity.