High density polyethylene is non-toxic, odorless, odorless white particle, melting point is about 130℃ and relative density is 0.941-0.960. It has good heat resistance and cold resistance, good chemical stability, high rigidity and toughness, and good mechanical strength. Dielectric properties and environmental stress cracking resistance are also good.
The HDPE film is generally used in the places requiring superior tensile properties and excellent impervious properties. For example, HDPE films are commonly used as commodity bags, grocery bags and food packaging bags.
LDPE can be used to produce plastic film product, which is suitable for making plastic film, heavy packaging film, cable insulation material, blow molding and foaming products.
Such as agricultural film, mulch film, agricultural film, vegetable greenhouse film, packaging film for candy, vegetables, frozen food packaging, liquid packaging blow plastic film (milk, soy sauce, juice. Tofu, soy milk); heavy packaging bags, shrink wrap films, elastic films, lining films; building films, general industrial packaging films and food bags. LDPE is also used for injection molded products, such as small containers, covers, daily products, plastic flowers, injection molding, stretching, blow molding containers. Medical equipment, medicine and food packaging materials, extruded pipes, plates, wire and cable coating, profiles, thermoforming and other products; blow molding hollow molding products, such as food containers, milk products and jam, drugs, cosmetics, chemical products containers, tank tanks and so on.
LLDPE products are non-toxic, tasteless, odorless, and appear in milky white granules. Compared with LDPE, it has the advantages of high strength, good toughness, strong rigidity, heat resistance, cold resistance and so on. It also has good resistance to environmental stress cracking, tear strength and so on, and can withstand acid, alkali, organic solvent and so on.
The main application fields of LLDPE are agricultural film, packaging film, wire and cable, pipes, coating products, etc.