US 11,833,461 B2
Small diameter tubular porous fiber filter
Nicole Elizabeth Morris-Anastasi, Richmond, VA (US); Michael Andrew Clendenning, Sharpsburg, GA (US); Michael W. Spencer, Chesterfield, VA (US); Qiang Zhou, Moseley, VA (US); and Guoqiang Mao, Newnan, GA (US)
Assigned to Porex Corporation, Fairburn, GA (US)
Appl. No. 16/645,397
Filed by Porex Corporation, Fairburn, GA (US)
PCT Filed Sep. 7, 2018, PCT No. PCT/US2018/049865
§ 371(c)(1), (2) Date Mar. 6, 2020,
PCT Pub. No. WO2019/051171, PCT Pub. Date Mar. 14, 2019.
Claims priority of provisional application 62/555,136, filed on Sep. 7, 2017.
Prior Publication US 2020/0282351 A1, Sep. 10, 2020
Int. Cl. B01D 39/00 (2006.01); B01D 39/16 (2006.01); B01D 46/24 (2006.01); B01D 29/31 (2006.01); B01D 29/33 (2006.01); B01D 29/03 (2006.01)
CPC B01D 39/1623 (2013.01) [B01D 29/03 (2013.01); B01D 29/31 (2013.01); B01D 29/33 (2013.01); B01D 46/2403 (2013.01); B01D 2239/0233 (2013.01); B01D 2239/1216 (2013.01); B01D 2239/1233 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A self-supporting seamless tubular porous cross-flow fiber filter for liquid comprising bicomponent fibers wherein the bicomponent fibers are oriented generally in parallel along a long axis of the filter, wherein the filter has a wall thickness of 2 mm or greater, a void space in the filter that is less than about 60%, and wherein the filter is self-supporting,
wherein the cross-flow filter for liquid has a burst pressure of over 100 psi and a filtration efficiency of at least 95% for filtering particles about 5 microns in size or smaller in a liquid solution;
wherein the bicomponent fibers are thermally fused together without a binding agent and wherein the bicomponent fibers each comprise a core and a sheath and the sheath has a higher melting temperature than the core.