US 4,981,738 A · Almost impermeable chemically protective fabric

Abstract

This invention relates to a multi-layer protective fabric for protective suits used in hazardous or toxic environments. A first layer comprises strips of water and vapor impermeable material, there being a gap between adjacent such strips. A second layer comprises a plurality of strips of a wicking material with each such strip covering the inner surface of a first layer strip, passing through the gap between adjacent strips and covering the outer surface of the adjacent first layer strip. Moisture, such as perspiration will pass via the wicking material through the gaps past the first layer for evaporation and diffusion through a third layer of a liquid impermeable/vapor permeable material which extends over the second layer material covering the outer surfaces of the first layer.

Claims14

Dependent claims

A protective fabric comprising a plurality of material layers bonded together and including:

a first layer formed from a plurality of adjacent strips of liquid and vapour impermeable material, adjacent strips being spaced apart from each other by a slight gap, each first layer strip having an inner surface and an outer surface;
a second layer formed from a plurality of strips of wettable fiberous wicking material, each second layer strip covering the inner surface of a first layer strip, extending through the gap between adjacent first layer strips, and covering the outer surface of the adjacent first layer strip;
and a third layer of liquid impermeable/vapour permeable material extending over the second layer material covering the outer surfaces of the first layer material.

Dependencies are inferred from the claim text.

Almost impermeable chemically protective fabric

Life of this patent

Almost impermeable chemically protective fabric

Life of this patent

Abstract

Claims14