Total lubricating extruded UHMWPE: ultra high molecular weight polyethylene (UHMW-PE) co-lubricated extrusion (injection) in two cases, one method uses slit lubricant pressed into molds, allowed in between the cavity surface and the molten material to form a lubricating layer; the second is the low viscosity of the resin blend coal storage bin liner prices to act as part of the product. UHMWPE heat treatment: heat treated with ultra high molecular weight polyethylene (UHMW-PE) powder pressed out of the product and is not heat-treated UHMPWE products compared to the former have better physical properties and transparency, the product surface The smoothness and greatly improved low-temperature mechanical properties.