Multilayer composite protective fabric material and use in protective clothing
AssigneeMembrane Technology and Research, Inc.
InventorsRichard W. Baker, Paul Shrock
Life of this patent
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Abstract
A multilayer composite fabric material consisting of a woven or non-woven fabric support, a microporous membrane layer, and an ultrathin permselective surface coating, and optionally an intermediate sealing layer and a protective top layer; the material being freely permeable to water vapor but impermeable to toxic organic vapors. The material is suitable for fabricating protective clothing for use in industrial and military hazardous chemical enviornments.
Claims22
Protective clothing, comprising at least one garment, said garment being fabricated from a composite material comprising:
- a clothing fabric layer, coated with;
- a microporous support membrane, coated with;
- an ultrathin permselective membrane.
A method of rendering a clothing fabric impermeable to organic agents, comprising:
- coating the clothing fabric with a microporous support membrane;
- and,
- coating the microporous support membrane with a nonporous, ultrathin permselective membrane.
A method of protecting a person from toxic organic agents, comprising clothing said person in at least one garment fabricated from a composite material comprising:
- a fabric layer, coated with;
- a microporous support membrane, coated with;
- an ultrathin permselective membrane.
Dependencies are inferred from the claim text.