Patent ID: 9248412
Filing Date: 2016-02-02
CPC Classification: B01D,B29C,B29K,B29L,Y10T

Claim Text:
1. A method for producing a hollow fiber membrane fluid transport device, comprising the steps of: laying a plurality of polytetrafluoroethylene hollow fibers parallel one another; applying a fluorinated homopolymer, copolymer, or terpolymer film on the hollow polytetrafluoroethylene fibers interwoven through interstitial spaces between the fibers near one end or both ends of the hollow polytetrafluoroethylene fibers; rolling the fibers and film into a bundle; heating the bundle to melt the film; compressing a portion of the bundle such that molten film flows between the hollow fibers to form an integral bundle of hollow fibers; cooling said film and fibers to form a solid mass providing a fluid-tight seal around each fiber such that the ends of the hollow fibers are open on one side of the solid mass and the open fiber ends are isolated from the fiber walls of the membrane; and comprising the step of placing the fiber bundle with the sealed or potted ends into a cylindrical containment shell comprised of a material selected from the group of materials consisting of polyvinylchloride, polysulfone, polyethersulfone, polycarbonate, polyether ether ketone, poly ether ketone, polyamide and polyimide.