Microporous polyethylene film manufactured according to liquid-liquid phase separation and method of producing the same
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United States of America Patent
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Dec 4, 2012
Grant Date -
Oct 4, 2007
app pub date -
May 24, 2007
filing date -
May 16, 2005
priority date (Note) -
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Abstract
Disclosed in the present invention are a microporous polyethylene film and a method of manufacture thereof. The polyethylene microporous film manufactured according to the present invention may contribute to an increased productivity of stable products as its extrusion and stretching may be done readily. And thus manufactured product may be used for battery separators and various filters owing to its high gas permeability, superior puncture strength, and small ratio of shrinkage.
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