Battery separator mat is mainly used as substrates for lead-acid battery separator plates. It is characterized as smooth surface, uniform thickness, low DC mass resistivity, high absorption deoxidized KMnO4 organic substance and impurity as well as proper stiffness. The substrate for lead-acid battery separator plate made of battery separator mat has the advantages of good mechanic strength and viberation resistance,low mass resistivity, high porosity and large capacity. so that it is widely used in the battery field, and it has become the main substrates material for battery separator plate