Element For Sound Insulation

Abstract

An element for sound insulation which forms the external completion of a housing-like structure excited to oscillations, in which there is located at least one sound emitter, which element is formed of a shaped thermoplastic material, which is reinforced by a glass fiber component of more than 35 weight percent based on the total weight of the thermoplastic material and the glass fibers component.

1 . Element for sound insulation, which forms the external completion of a housing-like structure excited to oscillations, in which there is located at least one sound emitter
 wherein the sound emitter is formed of a shaped thermoplastic material which is reinforced by a glass fiber component comprising more than 35 weight percent based on the total of the thermoplastic material and glass fiber component.   
   
   
       2 . Element according to  claim 1 ,
 wherein   the glass fiber component comprises up to 65 weight percent of the total of the thermoplastic material and the glass fiber component.   
   
   
       3 . Element according to  claim 1 ,
 wherein   the thermoplastic material is a polyolefin.   
   
   
       4 . Element according to  claim 3 ,
 wherein   the polyolefin is selected from the group consisting of polyethylene, polypropylene, derivates thereof, and mixtures thereof.   
   
   
       5 . Element according to  claim 1 , comprising a single piece. 
   
   
       6 . Element according to  claim 5 ,
 wherein   the element forms a plate or shell.   
   
   
       7 . Element according to  claim 6 ,
 comprising a foil lamination on at least one side thereof.   
   
   
       8 . Element according to  claim 7 , wherein
 the foil lamination is a polyolefin non-woven material.   
   
   
       9 . Element according to  claim 1 , having locally different thicknesses. 
   
   
       10 . Element according to  claim 8 , having a thickness in the range from 5 mm to 10 mm. 
   
   
       11 . Element according to  claim 10 ,
 wherein   the thickness to an edge reduces to about 2 mm.   
   
   
       12 . Element according to  claim 1 , wherein
 the housing-like structure is of a plastic or sheet metal.   
   
   
       13 . Element according to  claim 1 , comprising an underbody covering for motor vehicles.