UHMWPE extruded Lubrication: Lubrication extrusion (injection) molding technique is extrusion (injection) forming a lubricating layer between the material and the die wall, thereby reducing the shear rate of the material differences between the high wear points coal bin liner, reduced product deformation wear-resistant coal bin liner factory, while the high viscosity of the polymer can be improved extrusion (injection) at low speed, low-power condition. The method produces a lubricating layer of mainly two: self-lubricating and co-lubrication. Ultra high molecular weight polyethylene sheet using a Ziegler type catalyst efficiency low pressure synthesis, molecular weight control 150-300 million or more according to need. Taking into account the thermal degradation of the molecular processes, thus having a viscosity-average molecular weight greater than 1.7 million high-density polyethylene is processed into various products, in order to be able to be more advantageous.