Structurally stable fusible battery separators and method of making same
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United States of America Patent
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Feb 12, 2002
Grant Date -
N/A
app pub date -
Apr 20, 1999
filing date -
Apr 20, 1999
priority date (Note) -
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Abstract
A fusible, structurally stabilized battery separator is disclosed. The separator is formed by extruding a cylindrical parison of a polymer film and quenching the film on both sides with a low temperature fluid stream prior to processing the film to impart microporosity. Most preferably, the film includes at least a polyethylene layer and polypropylene layer.
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