Sound dampening panel and method of fabrication

Details Sound dampening panel and method of fabrication Sound dampening panel and method of fabrication

1985-09-25

1987-04-28

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

156210, 156229, 1563082, 181290, 181294, 181296, 428186, 428218, 428920, B32B 328, B32B 1706

Patent

active

046613927

ABSTRACT:
A sound dampening panel comprises a corrugated center barrier sandwiched between fibrous sound dampening material which is covered with fabric. The fibrous material fills the spaces between corrugations and forms a layer over the corrugations. In one form of panel the fibrous material is thermally fused under pressure such that it is rigidly formed with a relatively low density in the spaces between the corrugations and with a relatively high density in the layer over the corrugations. The fibrous material is also thermally bonded to the center barrier. In another form of panel, inserts of one density are placed in the spaces between corrugatins and those inserts are covered by a layer of greater density which is glued to ridges of the corrugations.

REFERENCES:
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patent: 4362222 (1982-12-01), Hellstrom
patent: 4441581 (1984-04-01), Sommerhalder
patent: 4522284 (1985-06-01), Fearon et al.
patent: 4531609 (1985-07-01), Wolf et al.
patent: 4539252 (1985-09-01), Franz

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