Composite material for absorbing and dissipating body fluids and

Details Composite material for absorbing and dissipating body fluids and Composite material for absorbing and dissipating body fluids and

1998-03-10

2000-02-15

Copenheaver, Blaine

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Nonwoven fabric

Including a foamed layer or component

428 71, 4283179, 442373, 442388, B32B 522, B32B 530

Patent

active

060252871

ABSTRACT:
Layered composite materials adapted to be formed into predetermined shaped components disposed for contact with moisture and body fluids having a cover layer for contact with the moisture and body fluids and a foam layer including one or more sorbents in a hydrophilic polyurethane foam matrix, wherein the foam layer is bonded to the cover layer so that moisture and body fluids in contact with the cover layer are transferred through the cover layer to the foam layer. The foam layer is established by combining an aqueous mixture including the sorbent in a predetermined ratio with the hydrophilic polyurethane. The foam layer may include other active ingredients such as odor absorption and bactericidal components, thermal phase change components and finely ground rubber tire materials to vary the characteristics of the composite material. Additionally, citric acid and surfactant compounds may be used to increase the concentration of the sorbent in the aqueous mixture and maintain the pumping fluidity of the aqueous mixture. Methods for making the layered composite materials are also described.

REFERENCES:
patent: 3839138 (1974-10-01), Kyle et al.
patent: 4461099 (1984-07-01), Bailly
patent: 4517308 (1985-05-01), Ehlenz et al.
patent: 4864740 (1989-09-01), Oakley
patent: 4985467 (1991-01-01), Kelly et al.
patent: 5197208 (1993-03-01), Lapidus
patent: 5392533 (1995-02-01), Gerhartl
patent: 5763335 (1998-06-01), Hermann

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