Decoupling web

Abstract

The invention relates to a decoupling web ( 1 ), in particular intended for use for a surface covering structure ( 2 ) which can be covered with covering elements, preferably tile coverings, having a carrier web ( 3 ) and a multiplicity of nubs ( 5 ) projecting from the carrier web plane ( 4 ), the carrier web ( 3 ) having as material a, preferably thermoplastic, plastic. According to the invention, it is provided that the carrier web ( 3 ) comprises as material a copolymer comprising ethylene and vinyl acetate, in particular a copolymer of ethylene and vinyl acetate, preferably ethylene-vinyl acetate (EVA), and/or consists thereof.

1 . A decoupling web, in particular intended for use for a surface covering structure which can be covered with covering elements, preferably tile coverings, having a carrier web and a multiplicity of nubs projecting from the carrier web plane, the carrier web comprising as material a, preferably thermoplastic, plastic, wherein
 the carrier web comprises as material a copolymer comprising ethylene and vinyl acetate, in particular a copolymer of ethylene and vinyl acetate, preferably ethylene-vinyl acetate (EVA), and/or consists thereof.   
     
     
         2 . The decoupling web according to  claim 1 , wherein the carrier web comprises as further material at least one thermoplastic polymer and/or elastomer, in particular hard polyethylene (HDPE), polyethylene (PE) and/or polypropylene (PP), in particular wherein the copolymer containing ethylene and vinyl acetate is mixed with the further material and/or wherein the further material has a mass fraction of the material of the carrier web of at least 20 wt. %, preferably between 30 wt. % and 99 wt. %, further preferably between 40 wt. % and 95 wt. %, further preferably between 50 wt. % and 80 wt. %, preferably between 30 wt. % and 99 wt. %, further preferably between 40 wt. % and 95 wt. %, further preferably further between 50 wt. % and 80 wt. %. 
     
     
         3 . The decoupling web according to  claim 1 , wherein the copolymer comprising ethylene and vinyl acetate has a mass fraction in the material of the carrier web of at least 5 wt. %, preferably between 10 wt. % to 80 wt. %, more preferably between 20 wt. % to 60 wt. %, more preferably further between 25 wt. % to 55 wt. %. 
     
     
         4 . The decoupling web according to  claim 1 , wherein the copolymer comprising ethylene and vinyl acetate has a vinyl acetate content of at least 5%, preferably between 10% and 50%, more preferably between 12% and 40%, further preferably between 16% and 30%, and in particular at least substantially from 25% to 29%, in particular based on the copolymer comprising ethylene and vinyl acetate. 
     
     
         5 . The decoupling web according to  claim 1 , wherein the carrier web has an at least two-layer layer structure, at least two layers (A, B) having a material composition differing from one another. 
     
     
         6 . The decoupling web according to  claim 1 , wherein at least one layer (A, B) of the carrier web comprises the copolymer comprising ethylene and vinyl acetate, in particular wherein at least one outer layer (A) comprises the copolymer comprising ethylene and vinyl acetate and, preferably, wherein a layer structure A-B-A or A-B is provided. 
     
     
         7 . The decoupling web according to  claim 1 , wherein only one outer layer (A) and/or the outer layers (A, A) comprise(s) the copolymer comprising ethylene and vinyl acetate or that each layer (A, B) of the layer structure of the carrier web comprises the copolymer comprising ethylene and vinyl acetate. 
     
     
         8 . The decoupling web according to  claim 1 , wherein the layer (A, B) comprising the copolymer comprising ethylene and vinyl acetate has a mass fraction of the copolymer comprising ethylene and vinyl acetate in the material of the layer (A, B) of at least 5 wt. %, preferably between 10 wt. % and 80 wt. %, more preferably between 20 wt. % and 60 wt. %, more preferably between 25 wt. % and 55 wt. %, in particular wherein at least one thermoplastic polymer and/or elastomer, in particular hard polyethylene (HDPE), polyethylene (PE) and/or polypropylene (PP), is provided as the further material and, preferably, wherein the copolymer containing ethylene and vinyl acetate is mixed with the further material and/or the further material has a mass fraction of the material of the carrier web and/or of the material of the layer (A, B) containing the copolymer containing ethylene and vinyl acetate of at least 20 wt. %, preferably between 30 wt. % and 99 wt. %, more preferably between 40 wt. % and 95 wt. %, further preferably between 50 wt. % and 80 wt. %. 
     
     
         9 . The decoupling web according to  claim 1 , wherein the outer layer (A) and/or the outer layers (A, A) has/have at least 10%, preferably between 10% and 90%, more preferably between 40% and 60% and in particular at least substantially 50%, of the layer thickness of a further, in particular central, layer (B). 
     
     
         10 . The decoupling web according to  claim 1 , wherein the carrier web, in particular the decoupling web, has an adhesive tensile strength of greater than 0.1 N/mm 2 , preferably greater than 0.2 N/mm 2 , more preferably between 0.2 N/mm 2  and 5 N/mm 2 . 
     
     
         11 . The decoupling web according to  claim 1 , wherein the carrier web, in particular the decoupling web, has a modulus of elasticity of less than 100 GPa, preferably less than 10 GPa, more preferably between 0.01 to 5 GPa and preferably between 0.05 to 2.5 GPa. 
     
     
         12 . The decoupling web according to  claim 1 , wherein the decoupling web has, in particular on the side opposite the carrier web plane, a fabric and/or nonwoven layer, in particular the nonwoven layer being firmly connected to the carrier web, in particular being laminated onto the carrier web. 
     
     
         13 . The decoupling web according to  claim 1 , wherein the nubs are arranged at a distance from one another and, preferably, transversely to the longitudinal direction (L) and in the longitudinal direction (L) of the decoupling web, in particular wherein the nubs form a distance from the upper carrier web plane and a lower nub plane formed by the outer nub end faces. 
     
     
         14 . The decoupling web according to  claim 1 , wherein at least one nub has an undercut at least in sections.