Polyethylene is one kinds of plastic variety that with the biggest output and the most application at present, among this, LDPE, HDPE, as well as LLDPE which was called as the third generation polyethylene are all belong to the thermal plasticity energy using plastic. The polyethylene which the molecular weight above 1,500,000 was called “ultrahigh molecular weight polyethylene (UHMW-PE)”. but only the ultrahigh molecular weight polyethylene (UHMW-PE) which the molecular weight reached as high as 1,500,000 was used in engineering plastics because of its outstanding physical performance.

Ultraly high molecular weight of UHMW-PE endows it with outstanding operational performance, it almost collected each kind of plastic’s merit, possesses the synthetical performance which was incomparable when compared with the ordinary polyethylene and other engineering, these synthetical performance includes abrasion-proof,anti-impact,self-lubrication, anti-corrosive, absorbs impact energy, bears the low temperature, sanitation and non-toxic, not easy to stick, not easy to absorb water, slight density and so on. Actually, at present there has yet no one kind of simplex macromolecule material has such multitudinous outstanding performance.