Open-celled microporous sorbent-loaded textile fibers and films

Details Open-celled microporous sorbent-loaded textile fibers and films Open-celled microporous sorbent-loaded textile fibers and films

1979-12-28

1982-08-03

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

210502, 264 41, 264 453, 264 458, 264 459, 264 461, 264 49, 428372, 428401, 521 63, 521142, 4283155, 4283084, B01D 3904, B01D 3916, B29D 2700

Patent

active

043428118

ABSTRACT:
Textile quality polymeric fibers and thin films that are highly sorbent for organic and other vapors, mists and solutes. The fibers and films comprise a polymeric matrix with a system of interconnecting micropores, and are highly loaded with particulate sorbents such as activated carbon. The fibers and films are manufactured by forming a melt blend of the sorbent particles, the polymer and a selected diluent, spinning or extruding and drawing down the fiber or film, and extracting the diluent. The diluent functions to permit a high spin or extrusion draw down, to permit the subsequent cold drawing of fibers highly-loaded with active carbon, and to permit the fiber or film to be porosified. Optionally, the diluent may be extracted after or before cold drawing, or without any cold drawing. The fibers and films are highly sorbent, are strong and durable and exhibit substantial strength over an appreciable degree of elongation.

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