Non-uniform cross-sectional area hollow fibers

Details Non-uniform cross-sectional area hollow fibers Non-uniform cross-sectional area hollow fibers

1979-03-12

1981-09-22

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

2105002, 428399, D02G 300

Patent

active

042910960

ABSTRACT:
Hollow fibers, particularly useful as semipermeable membranes in separatory devices such as blood dialyzers, having a non-uniform cross-sectional area along the length thereof. The fibers have recurring points of maximum outside diameter and minimum outside diameter and such points may recur on a regular basis or at random. Fiber wall thicknesses may be substantially uniform or non-uniform. Methods and apparatus for making the fibers are disclosed.

REFERENCES:
patent: 3400189 (1968-09-01), Nacke
patent: 3704223 (1972-11-01), Dietzsch et al.
patent: 3888771 (1975-06-01), Isuge et al.
patent: 4127625 (1978-11-01), Arisaka et al.
patent: 4164437 (1979-08-01), Henne et al.

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