Planar element for the absorption of air-transmitted sound and m

Details Planar element for the absorption of air-transmitted sound and m Planar element for the absorption of air-transmitted sound and m

1983-05-20

1984-09-04

Van Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

156 82, 156290, 181288, 181291, 428166, 428198, B32B 330, B32B 710

Patent

active

044697368

ABSTRACT:
A planar element for the absorption of air-transmitted sound, includes a flexible layer of open-cell foam material including a surface having protuberances with peaks formed thereon, and a flat closed cover layer formed of synthetic foil material fastened to the peaks of the protuberances, and a method of manufacturing the same.

REFERENCES:
patent: 3356562 (1967-12-01), Graham et al.
patent: 3360423 (1967-12-01), Lindberg
patent: 3574109 (1971-04-01), Yoshikawa
patent: 3712846 (1973-01-01), Daniels et al.

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