Floor covering having a strong noise-reducing properties

Abstract

A floor covering with strong noise-reducing properties for the interior trim of means of transport having on the passenger side a textile or non-textile surface, acoustically coupled through at least one microperforated sheet to a fibrous non-woven and/or foamed plastic. A microperforated sheet having a hole diameter from 0.2 to 0.5 mm and an interhole distance from 3 to 7 mm.

1 . A floor covering for the interior trim of means of transport, which has, on the passenger side, a textile or non-textile surface, characterized in that this surface is acoustically coupled to a floor covering sublayer made of a fibrous non-woven and/or foamed plastic through at least one microperforated sheet having a hole diameter of the microperforated layer of from 0.2 to 0.5 mm and an interhole distance of the microperforated layer of from 3 to 7 mm.  
     
     
         2 . The floor covering according to  claim 1 , characterized in that the fiber bonding of a textile surface is effected with a microperforated sheet which simultaneously adopts the coupling function to a floor covering sublayer.  
     
     
         3 . The floor covering according to  claim 1 , characterized in that the surface consists of a textile carpet floor which is provided with a microperforated plastic layer on its backside.  
     
     
         4 . The floor covering according to  claim 1 , characterized in that the surface consists of a flocked carpet on a textile or polymeric microperforated substrate.  
     
     
         5 . The floor covering according to  claim 1 , characterized in that the surface consists of a polymeric microperforated surface having a one-layer or two-layer structure, especially heavy layer coated with a thermoplastic polyolefin layer.  
     
     
         6 . The floor covering according to  claim 1 , characterized in that the surface consists of a metallic microperforated surface, especially of stainless steel or aluminum with different surface profiles.  
     
     
         7 . The floor covering according to  claim 1 , characterized in that the surface consists of an organic microperforated surface, especially wood, cork, leather or artificial leather.  
     
     
         8 . The floor covering according to  claim 1 , characterized in that the hole diameter of the microperforated layer is from 0.3 to 0.4 mm.  
     
     
         9 . The floor covering according to  claim 1 , characterized in that the interhole distance of the microperforated layer is from 3.5 to 5.5 mm.