Acoustic panel of the air sheet type

Abstract

The invention relates to an acoustic panel presenting at least two plates together with at least one spacer for keeping said two plates spaced apart so as to form at least one sheet of air. In the panel, said spacer is constituted by a woven or knitted element, e.g. of aluminum wire, and it presents embossing.

1 . An acoustic panel presenting at least two plates together with at least one spacer for keeping said two plates apart so as to form at least one sheet of air, wherein said spacer is constituted by a knitted element that is an embossed metal wire knit.  
     
     
         2 . An acoustic panel according to  claim 1 , wherein the metal wire is made of aluminum.  
     
     
         3 . An acoustic panel according to  claim 1 , wherein the embossing is inclined, e.g. at 45°, relative to two opposite edges of the spacer.  
     
     
         4 . An acoustic panel according to  claim 1 , wherein the spacer is embossed in two dimensions.  
     
     
         5 . An acoustic panel according to  claim 1 , wherein the knitted element is in the form of a sleeve that is flattened so as to present two superposed embossed thicknesses.  
     
     
         6 . An acoustic panel according to  claim 1 , wherein the knitted element constitutes a net having one of said plates located therein.  
     
     
         7 . An acoustic panel according to  claim 1 , presenting a central plate and two outer plates, the central plate and the outer plates being held spaced apart by said spacers.  
     
     
         8 . An acoustic panel according to  claim 7 , wherein the central plate is of foam, in particular melamine foam.  
     
     
         9 . An acoustic panel according to  claim 7 , wherein the central plate is of low density glass wool in a cover of aramid fibers.  
     
     
         10 . An acoustic panel according to  claim 8 , wherein the two outer plates are of glass fiber and epoxy composite.