Lead acid battery with separator having long fibers
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United States of America Patent
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-
May 5, 1981
Issued Date -
N/A
app pub date -
May 23, 1980
filing date -
Aug 21, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A battery separator is provided that has 30-70% polyolefin synthetic pulp, 15-65% siliceous filler and 1-35% by weight of long fibers having lengths of between 1/4 and 1 inch. The long fibers may be polyester fibers or glass fibers or a mixture. Cellulose may be included in an amount up to about 10%. A process for forming the battery separator is also revealed using standard paper making equipment but employing ionic copolymers containing acrylamide in cationic and anionic combination to give good affinity of the siliceous material and polyolefin. Alum and other processing aids are also included as are other procedural steps such as pressing the web.
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Family
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Cited Art Landscape
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