Sound and heat insulation material

Details Sound and heat insulation material Sound and heat insulation material

2005-07-05

2005-07-05

Torres, Norca L. (Department: 1771)

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

Woven fabric

Including a foamed layer or component

C442S181000, C442S199000, C442S200000, C442S221000, C442S223000, C442S225000, C442S315000, C428S398000

Reexamination Certificate

active

06914020

ABSTRACT:
A sound and heat insulation material for insulating buildings, motor vehicles, conduits, etc., is covered on at least one exterior surface with a material which reacts at a given temperature by foaming up, and which is difficult to ignite or inflammable. The exterior covering can be a sheet or fiber layer which is impregnated with the reactive material or coated with it. The fibers of the sound and heat insulation core layer can also be directly coated with the reactive material or be mingled with a variable proportion of foamable fibers. The sound and heat insulation element, which is difficult or impossible to ignite, has good insulating properties.

REFERENCES:
patent: 3934066 (1976-01-01), Murch
patent: 4780359 (1988-10-01), Trask et al.
patent: 4987026 (1991-01-01), Jacobs et al.
patent: 5527598 (1996-06-01), Campbell et al.

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