Method of making multilayer composite hollow fibers

Details Method of making multilayer composite hollow fibers Method of making multilayer composite hollow fibers

1987-09-01

1989-02-07

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

55 16, 55 21, 55 69, 55158, 21050023, 21050027, 21050029, 21050035, 21050037, 21050041, 21050042, 210490, 428373, 428376, 428398, B32B 3116

Patent

active

048029424

ABSTRACT:
Disclosed are a multilayer composite hollow fiber comprising at least one nonporous separating membrane layer (A) performing a separating function and two or more porous layers (B) performing a reinforcing function, the layer (A) and the layers (B) being alternately laminated so as to give a structure having internal and external surfaces formed by the porous layers (B), as well as a method of making such a hollow fiber.
In this multilayer composite hollow fiber, the separating membrane can be formed as an ultrathin, homogeneous membrane. Moreover, the separating membrane is not liable to get damaged owing to the unique structure of the hollow fiber. Furthermore, such hollow fibers can be readily and stably produced on an industrial scale.

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patent: 4317729 (1982-03-01), Yamashi et al.
patent: 4405688 (1983-09-01), Cowery et al.
patent: 4421529 (1983-12-01), Revak et al.
patent: 4470831 (1984-09-01), Hirose
patent: 4666469 (1987-05-01), Krueger et al.

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