Floor covering with viscoelastic dampening properties

Abstract

The present invention concerns a floor covering, such as a carpet, containing a first textile planar element and a first layer which is at least partially connected to the first textile planar element over their surfaces, wherein the first layer contains viscoelastic polymer foam. The floor covering according to the invention is characterized in that the first textile planar element has a modulus of elasticity of ≧0.5 N/mm 2 to ≦2.5 N/mm 2 , that in the first layer 1 the viscoelastic polymer foam has a compression load deflection at 40% compression of ≧1 kPa to ≦10 kPa and that in the first layer the viscoelastic polymer foam has a hysteresis when determining the compression load deflection at 40% compression of ≧20% to ≦70%. The present invention also relates to a method of manufacturing a floor covering.

1 . A floor covering comprising a first textile planar element and a first layer which is at least partially connected to the first textile planar element over their surfaces, wherein the first layer comprises viscoelastic polymer foam, wherein the first textile planar element has a modulus of elasticity of ≧0.5 N/mm 2  to ≦2.5 N/mm 2 , that in the first layer the viscoelastic polymer foam has a compression load deflection at 40% compression of ≧1 kPa to ≦10 kPa and that in the first layer the viscoelastic polymer foam has a hysteresis when determining the compression load deflection at 40% compression of ≧20% to ≦70%. 
   
   
       2 . The floor covering according to  claim 1 , wherein the viscoelastic polymer foam of the first layer is a polyurethane foam. 
   
   
       3 . The floor covering according to  claim 1 , wherein the viscoelastic polymer foam of the first layer is a cross-linked frothed foam from synthetic or natural latex. 
   
   
       4 . The floor covering according to  claim 1 , wherein the material of the first textile planar element comprises polyurethane and/or thermoplastic polyurethane. 
   
   
       5 . The floor covering according to  claim 1 , wherein the connection between the first textile planar element and the first layer is effected by an elastomeric adhesive. 
   
   
       6 . The floor covering according to  claim 1 , further comprising fibers which penetrate the first textile planar element and into the first layer and wherein the fibers are anchored in the first layer by an elastomeric adhesive. 
   
   
       7 . The floor covering according to  claim 1 , wherein the First layer additionally comprises an embedded second textile planar element which has a modulus of elasticity of ≧1000 N/mm 2  to ≦2000 N/mm 2 . 
   
   
       8 . The floor covering according to  claim 1 , further comprising a second layer arranged on the side of the first layer which is opposite to the first textile planar element and which is at least partially connected to the first layer, wherein the second layer comprises polymer foam which has a compression load deflection at 40% compression of ≧15 kPa to ≦150 kPa. 
   
   
       9 . The floor covering according to  claim 8 , further comprising a third textile planar element which has a modulus of elasticity of ≧1000 N/mm 2  to ≦2000 N/mm 2 , wherein the third textile planar element is arranged on the side of the second layer which is opposite to the first layer and wherein the third textile planar element is at least partially connected to the second layer. 
   
   
       10 . The floor covering according to  claim 1 , further comprising microencapsulated fragrances. 
   
   
       11 . A method for manufacturing a floor covering according to  claim 1 , comprising the step of back-foaming the first textile planar element with a reaction mixture leading to the polymer foam of the first layer. 
   
   
       12 . The method according to  claim 11 , wherein the reaction mixture comprises a polyol and an isocyanate. 
   
   
       13 . The method according to  claim 11 , wherein the reaction mixture comprises a prepolymer and water.