Laminated material of segregating membrane and segregating membrane supporting material, and its method of manufacture
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United States of America Patent
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Jul 4, 2006
Grant Date -
Aug 11, 2005
app pub date -
Jul 21, 2003
filing date -
Sep 20, 1999
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Abstract
Segregating membrane supporting material is a three-dimensional assembly of fibers thermo-compressed into non-woven fabric, and the non-woven fabric fibers are joined together in sheet form. This segregating membrane supporting material is non-woven fabric, including at least 10 weight % polyacrylonitrile-based synthetic fibers, which is thermo-compressed to give an overall bulk density 40% to 75% of the density of the fibers which make up the non-woven fabric.
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