High-density polyethylene, 
 English name: "High Density Polyethylene". 
 Properties: melting point of about 131 ℃, density 0.941 ~ 0.960, it has good heat resistance and cold resistance, softening point 125 ~ 135 ℃ embrittlement temperature of -70 ℃, 100 ℃ temperature up to wear better. Electrical insulation, toughness, cold resistance are good, but slightly worse with the low-density polyethylene. Shrinkage: 1.5% to 4% 
 According to the different types of PE can be used for: pharmaceutical packaging, industrial, production flow trays, chemicals, packaging, pharmaceutical packaging, spices and certain beverage packaging; also be used as sound insulation, heat insulation and ceiling materials, and instead of wood, steel used for furniture and construction materials. 
 Ultra-high molecular weight polyethylene sheet (UHMWPE) Features: 
 Service life than steel, carbon steel and stainless steel wear resistance of 3 to 7 times; friction coefficient is small, self-lubricating, non-absorbent, non-adhesive materials, high strength, impact resistance, good mechanical properties, acid, alkali , salt corrosion, aging, low temperature, health non-toxic, light weight, the proportion of steel 1 / 8, therefore, is used for bulk material storage and transport equipment, the best lining materials, such as silos, flow ducts. Widely used in electric power, steel mills, coal mines and so on industry. 
 Ultra-high molecular weight polyethylene (UHMWPE) plate with high wear and corrosion resistance, impact resistance, self-lubricating, can be made loading coal, cement, lime, slag, salt, cereals, powdered materials, hopper, silo, chute lining. Because of its excellent abrasion resistance, self-lubricating and non-sticky, so that the powder material on the storage device, the phenomenon of adhesion does not occur, to ensure stable transportation. 
 This high wear-resistant plates to adapt to various environmental conditions of installed applications can be designed into the structure can be assembled to connect to user requirements, ease of installation and maintenance. Very difficult operating conditions, such as coal mine installed hopper, chute, hopper feeding the metallurgical industry and other applications that can solve the transportation bonding and sealing process of this long-standing problem, to achieve safe and efficient normal 

 Polyethylene sheet (HDPE plate) melting point of about 130 ℃, the relative density of 0.941 ~ 0.960. It has good heat resistance and cold resistance, chemical stability, also has high rigidity and toughness, good mechanical strength. Dielectric properties, resistance to environmental stress cracking resistance is also good. Melting temperature of 220 ~ 260C. For larger molecules of the material, it is recommended melt temperature range between 200 ~ 250C.