NON-WOVEN FABRIC FOR SEMIPERMEABLE MEMBRANE SUPPORT
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United States of America Patent
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Nov 20, 2014
app pub date -
Jan 29, 2013
filing date -
Jan 30, 2012
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Abstract
Provided is a non-woven fabric for semipermeable membrane support, in which adhesiveness of a semipermeable membrane to a support is satisfactory, the thickness uniformity of the semipermeable membrane is satisfactory, and permeation-through of a coating liquid does not occur. Disclosed is a non-woven fabric for semipermeable membrane support containing organic synthetic fibers as a primary component, wherein a semipermeable membrane is to be supported by one surface of the non-woven fabric, wherein the coated surface to be coated with the semipermeable membrane and the non-coated surface that is opposite to the coated surface of the non-woven fabric both have a Bekk smoothness of 5 seconds or more, and the non-woven fabric has an internal bond strength in the sheet transverse direction in the range from 0.4 to 0.8 N·m.
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