BATTERY SEPARATOR MATERIAL

摘要

A method of forming a battery separator material which comprises forming a slurry of discrete polyolefin pulp fibers and a particulate filler in water. The slurry is deposited to form a wet web which is saturated with a polymeric organic binder. The web is compressed to form a coherent sheet which is then dried to form a battery separator material at a temperature below the fusion temperature of the polyolefin pulp fibers.