Surface-modified fluoropolymer membrane
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United States of America Patent
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May 16, 2017
Grant Date -
Sep 22, 2016
app pub date -
May 31, 2016
filing date -
Sep 23, 2011
priority date (Note) -
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Abstract
A method for use in the manufacture of a filtration article includes providing a porous, fluoropolymer membrane, and applying a force to at least a portion of a first side surface of the membrane to modify the first side surface. The applied force may have a non-normal directional component relative to the first side surface. The surface modification may increase the density of the modified surface and/or reduce the porosity of the modified surface. Particle retention capabilities are thereby enhanced across the modified surface while maintaining permeability across the volume of the membrane.
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