US 6,645,887 B2 · Durable waterproof breathable laminate

Abstract

A durable, water-resistant, breathable, multi-layer laminate adapted to transmit moisture and composed of (1) an outer woven, non-woven or knitted layer of fabric, (2) a discontinuous non-breathable hydrophobic adhesive, (3) a first hydrophilic barrier film adhesively secured to the outer fabric layer, by the hydrophilic adhesive, (4) a continuous film or discontinuous breathable hydrophilic adhesive, and (5) a second hydrophilic barrier film adhered to the hydrophilic adhesive. The first hydrophilic barrier film and second hydrophilic barrier film are adhesively secured to each other with the breathable hydrophilic adhesive and define a void area between the two films and together the films enhance moisture migration and transfer. The laminates may include two additional layers of (6) a second hydrophilic adhesive, and (7) a fabric backing layer secured by the second hydrophilic adhesive.

Claims10

Dependent claims

A durable, water-resistant, breathable, multi-layer laminate adapted to transmit moisture comprising:

(1) an outer woven, non-woven or knitted layer of fabric,
(2) a layer of a discontinuous non-breathable hydrophobic adhesive applied to the outer layer,
(3) a first hydrophilic barrier film adhesively secured to the outer fabric layer, by the hydrophobic adhesive,
(4) a continuous film or discontinuous layer of a breathable hydrophilic adhesive, and
(5) a second hydrophilic barrier film adhered to the continuous film or discontinuous layer of hydrophilic adhesive
wherein the first hydrophilic barrier film and second hydrophilic barrier film are adhesively secured to each other with the breathable hydrophilic adhesive and define a void area between the two films enhancing moisture migration and transfer.

3 more elements

Dependencies are inferred from the claim text.

Durable waterproof breathable laminate

Life of this patent

Durable waterproof breathable laminate

Life of this patent

Abstract

Claims10