Perforated sound absorbing panel

Details Perforated sound absorbing panel Perforated sound absorbing panel

E - Fixed Constructions

04

B

181/16

E04B 1/84 (2006.01) E04B 9/00 (2006.01)

Patent

CA 1298210

ABSTRACT OF THE DISCLOSURE A perforated panel having a thickness of at least about 6 mm, for use as a sound absorbing element, especially at lacunarias. Each perforation is covered by a thin fibre cloth which is bonded to the edges of the perforation, rendering said panel element a specific acoustic flow resistance of between 1200 and 4000 Nsm-3.

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