Waterproof article and method for making a waterproof article

Details Waterproof article and method for making a waterproof article Waterproof article and method for making a waterproof article

1988-07-13

1989-04-04

McCamish, Marion C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427 431, 427 44, 427 55, 427307, 4283155, 4283159, B32B 326

Patent

active

048185965

ABSTRACT:
An article which is rendered waterproof by a microporous membrane of a hydrophobic material, the pores of the membrane in a layer-like region on or towards a surface thereof being plugged with a hydrophilic material, leaving hydrophobic material exposed on the said surface between the pores.

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patent: 3576686 (1971-04-01), Schmidle et al.
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patent: 3770537 (1973-11-01), Elton
patent: 3993551 (1976-11-01), Assarsson et al.
patent: 4100238 (1978-07-01), Shinomura
patent: 4230463 (1980-10-01), Henis et al.
patent: 4239714 (1980-12-01), Sparks et al.
patent: 4381320 (1983-04-01), Nguyen
patent: 4613544 (1986-09-01), Burleigh

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