Sound damping element, in particular for a panel sound damper

(19)

(11)

EP 0 783 164 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	07.04.1999 Bulletin 1999/14

(43)	Date of publication A2:
	09.07.1997 Bulletin 1997/28

(21)	Application number: 96120853.5

(22)	Date of filing: 23.12.1996

(51)	International Patent Classification (IPC)⁶: G10K 11/162

(84)	Designated Contracting States:
	AT BE CH DE DK ES FR LI NL SE

(30)

Priority:

02.01.1996 DE 19600040

(71)	Applicant: ISOVER SAINT-GOBAIN
	92400 Courbevoie (FR)

(72)	Inventors:
	Royar, Jürgen, Dr. 68526 Ladenburg (DE) Sommer, Rolf 67125 Dannstadt (DE)

(74)	Representative: Bockhorni, Josef, Dipl.-Ing. et al
	Patentanwälte Herrmann-Trentepohl Grosse - Bockhorni & Partner, Forstenrieder Allee 59 81476 München 81476 München (DE)

(54)	Sound damping element, in particular for a panel sound damper

(57) A sound damper element (1), in particular for a panel sound damper, having sound-absorbent filling (5) of preferably mineral wool which is mounted in a frame (2) having acoustically transparent principal surfaces (3,4) for covering the sound-absorbent filling (5), the filling (5) being formed by an absorption layer (6-9) with low flow resistance perpendicular to the direction of sound propagation and a dissipation layer with high flow resistance parallel to the direction of sound propagation.

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