Vibration damping soundproof sheets for use in vehicles

Details Vibration damping soundproof sheets for use in vehicles Vibration damping soundproof sheets for use in vehicles

1987-04-09

1988-03-29

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

181208, 181288, 181294, 4283177, 4283191, 4283197, 428519, F16F 1500, E04B 182, B32B 326, B32B 2500

Patent

active

047343230

ABSTRACT:
This invention is directed to a vibration damping soundproof sheet for use in vehicles, in which the surface of the soundproof layer is made flat irrespective of the or uneven configuration at the surface of a vehicle. The soundproof layer-forming material comprises a formed rubber blend in which a foaming agent and other rubber blending agents are blended with a rubber type polymer in which the soundproof layer-forming material contains from 15 to 85% by weight of 1,2-polybutadiene ingredient.

REFERENCES:
patent: 4397906 (1983-08-01), Nakagawa et al.
patent: 4495240 (1985-01-01), McCarthy
patent: 4528241 (1985-07-01), Uffner et al.
patent: 4537921 (1985-08-01), Uffner et al.
patent: 4654257 (1987-03-01), Murachi
patent: 4663224 (1987-05-01), Tabata et al.
patent: 4668565 (1987-05-01), Murachi

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