Tubesheet for semipermeable membrane devices

Details Tubesheet for semipermeable membrane devices Tubesheet for semipermeable membrane devices

B - Operations, Transporting

01

D

183/1, 18/76

B01D 63/02 (2006.01) B01D 53/22 (2006.01) B29C 67/18 (1990.01)

Patent

CA 1332362

- 35 - TUBESHEET FOR SEMIPERMEABLE MEMBRANE DEVICES ABSTRACT OF THE INVENTION A method for producing hollow fiber permeable devices having an essentially leak-free seal between the hollow fibers and the tubesheet that consists of heating the tubesheet containing the hollow fibers potted therein at a temperature essentially equal to or greater than the glass transition temperature of the thermoplastic material or the softening point of the thermoset material of the hollow fiber for a period of time sufficient to essentially densify the hollow fibers in the potted portion of the tubesheet and whereby a major portion of the interior diameter of the bores of the hollow fibers embedded in the tubesheet is enlarged; and the fiber permeable devices themselves.

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