Method of winding a mass transfer device and product

Details Method of winding a mass transfer device and product Method of winding a mass transfer device and product

1981-01-02

1983-01-11

Ball, Michael W.

Liquid purification or separation

Casing divided by membrane into sections having inlet

Energy recovery from treated liquid

156172, 156173, B01D 1304, B65H 8100

Patent

active

043681247

ABSTRACT:
A mass transfer device of the type used, e.g., for blood dialysis is made by winding on a mandrel a series of fiber strands, each of which consists of a solid fiber and one or more hollow fibers, the solid fiber being at least as large, and preferably substantially larger, in diameter than the hollow fiber. As the strands are wound on the mandrel they are temporarily anchored at spaced locations along the mandrel by beads of a liquid pre-potting compound which eventually harden into said anchor plates. When the winding is complete, the mandrel is cut at each anchor plate to form individual temporary cartridges which can withstand the handling required in washing and drying. After each individual cartridge is final-potted, the anchor plates are discarded, and the final potting is cut in a conventional manner to form manifold surfaces at each end of the cartridge. A deburring treatment is then applied to the manifold surface at each end of the cartridge to smooth out any microscopic irregularities of the manifold surface which can cause thrombogenesis.

REFERENCES:
patent: 2108013 (1938-02-01), Fehr
patent: 3422008 (1969-01-01), McLain
patent: 3442002 (1969-05-01), Geary et al.
patent: 3503515 (1970-03-01), Tomsic
patent: 3557962 (1971-01-01), Kohl
patent: 3963622 (1976-06-01), Baudet et al.
patent: 4038190 (1977-07-01), Baudet et al.
patent: 4140637 (1979-02-01), Walter
patent: 4259991 (1981-04-01), Kutayak

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