ALKALINE STORAGE BATTERY SEPARATOR AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an alkaline storage battery separator and a manufacturing method for it with excellent productivity and electric characteristics such as a cycle characteristic. SOLUTION: This alkaline storage battery separator is made of a polyolefinic group nonwoven fabric and a hydrophilic polymer, and the hydrophilic polymer forms at least a chemical bond to the nonwoven fabric fiber or forms a three- dimensional crosslinking structure allowing penetration of the nonwoven fabric fiber in it. In the manufacturing method for this alkaline storage battery separator, a polyfunctional liquid hydrophilic monomer or the nonwoven fabric impregnated with the monomer solution is irradiated with ionizing radiation or active rays.