UHMWPE forming: General. Extrusion. China in the end of 1994 developed the ultra-high molecular weight polyethylene Φ45 single screw extruder ultra high molecular weight plastic MILL, and made Φ65 single-screw extrusion production line pipe industrialization success in 1997. Injection molding. Of 1983 on the domestic XS-ZY-125A-type injection molding machine was modified to successfully inject a beer canning line with ultra-high molecular weight polyethylene (UHMW-PE) roller, pumps with the sleeve Wanted ultra high molecular weight plastic sheeting, 1985 and successfully injected a medical artificial joints. Ultrahigh molecular weight polyethylene having a molecular weight of more than 1.5 million linear polyethylene unbranched. Formula: - (- CH2-CH2 -) - n-, density: 0.920 ~ 0.964g / cm3. Heat distortion temperature (0.46MPa) 85 ℃, m.p. 130 ~ 136 ℃. Ultra high molecular weight polyethylene (UHMW-PE) is a thermoplastic engineering plastic with excellent overall performance of a linear structure.