PE plastic bags have become very common in life. So what are the specific characteristics of its raw materials? Zeyi Packaging will give you a brief introduction today.
LDPE (high-pressure low-density polyethylene): its products have low density, good transparency, good insulation, etc., mainly used for agricultural film (shed film, ground film), heavy packaging film, shrink film, transparent film, insulating material and cable sheath The production can also be used in injection molding, extrusion, foaming and other processing fields. The product is non-toxic, tasteless, milky white cylindrical particles with a glossy surface, with good extensibility and electrical insulation, with a crystallinity of 55-65% and a crystalline melting point of 108-126°C.
HDPE (low-pressure high-density polyethylene): The product is non-toxic, tasteless, odorless white particles, with a melting point of about 130°C and a relative density of 0.941-0.965. Has good heat resistance and cold resistance. Good chemical stability, high rigidity and toughness, good mechanical strength, dielectric properties, and environmental stress cracking resistance.
LLDPE (Linear Low Density Polyethylene): The product is non-toxic, odorless, and odorless milky white particles with a relative density of 0.918-0.939. Compared with LDPE, it has the advantages of high strength, good toughness, strong rigidity, heat resistance, cold resistance, etc. It also has good resistance to environmental stress cracking, tear resistance, and resistance to acids, alkalis, and organic solvents.
