Barrier fabric and method

Details Barrier fabric and method Barrier fabric and method

1988-12-07

1990-02-06

McCamish, Marion C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

15624418, 15624419, 427355, 427358, 428290, 428300, 4283155, B32B 700

Patent

active

048987611

ABSTRACT:
A barrier fabric is provided which is impermeable to liquids and permeable to vapor. A polymer film is laminated to a porous fibrous web. The composite web is then needled repeatedly with fine conical needles to provide micropores through the film.

REFERENCES:
patent: 4582750 (1986-04-01), Lou et al.
patent: 4684568 (1987-08-01), Lou

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