Battery separator

Details Battery separator Battery separator

H - Electricity

01

M

319/58

H01M 2/16 (2006.01) H01M 2/14 (2006.01)

Patent

CA 1159109

Ref. 5690 BATTERY INTERSEPARATOR Abstract An alkaline battery membrane, and a process of forming the same, is formed from a composition having 30-70% by weight synthetic pulp, 15-65% by weight alkali resistant inorganic filler, and 1-35% by weight of long fibers having lengths of between l/4 and 1 inch. The long fibers may be polyester, polyacrylic, polyamide, polyolefin, or other staple fiber material. The process for forming the subject membrane requires first forming a substantially uniform aqueous mixture of the subject composition, sequentially treating said composition with a combination of a cationic and an anionic agent, applying the treated composition to a standard paper-making apparatus at a grammage rate to cause the resultant dried sheet to have a thickness of less than l0 mils, and forming a sheet product.

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