SEPARATOR AND METHOD FOR MANUFACTURING THE SEPARATOR
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United States of America Patent
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Nov 27, 2014
app pub date -
Mar 21, 2014
filing date -
May 27, 2013
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Abstract
A separator arranged between a pair of electrode sheets includes a nonwoven fabric formed of thermoplastic resin fibers spun by a melt-blowing process. The fibers include fine fibers having fiber diameters of 0.1 μm or more and 1 μm or less, and thick fibers having fiber diameters of 8 μm or more and 30 μm or less. The fine fibers and the thick fibers are mixed over the entire thickness of the nonwoven fabric.
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