Ultra-high molecular weight is the distinctive feature of this polymer, it has a molecular weight of 3 to 9 million, this difference is to ensure that the ultra-high molecular weight polyethylene has sufficient strength to achieve other lower polymer products impossible. Wear and impact resistance. The ultra-high molecular weight of ultra-high molecular weight polyethylene means that it does not melt and flows like a liquid, so the processing method is derived from powder metal technology. Traditional plastic processing techniques, such as injection molding, blow molding and heat setting, cannot be applied to UHMWPE. Extrusion is a common process used for this resin, resulting in a tougher product.