Silicone gel-coated adhesive layer structure

Abstract

The present invention relates to a silicone-gel-coated, adhesive layer structure, a method for the production thereof as well as the use thereof. The layer structure comprises a porous backing material, an intermediate layer applied to one side of the porous backing material and an adhesive layer made of a silicone gel applied to the intermediate layer.

1 . A method for producing a silicone-gel-coated adhesive layer structure, the method comprising:
 applying an intermediate layer material to at least one side of a porous backing material, wherein the intermediate layer material comprises acrylic acid copolymer which can be crosslinked by UV radiation;   applying silicone gel to the intermediate layer; and   crosslinking the intermediate layer material using UV radiation through the porous backing material forming an intermediate layer, wherein the intermediate layer defines an enhanced bond between the porous backing material and the intermediate layer.   
     
     
         2 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the acrylic acid copolymer is applied using transfer coating, wherein transfer coating comprises:
 applying the intermediate layer material to a substrate, and   transferring the intermediate layer material from the substrate to the porous backing material.   
     
     
         3 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 2 , wherein the intermediate layer material is in a solvent, and the solvent is at least partially evaporated after application to the substrate material. 
     
     
         4 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 2 , further comprising crosslinking the intermediate layer material on the substrate material prior to transferring the intermediate layer material from the substrate to the porous backing material. 
     
     
         5 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the intermediate layer material is crosslinked prior to applying the silicone gel. 
     
     
         6 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the porous backing material is selected from the group consisting of non-woven materials, fabrics, knitted fabrics, foam materials and films. 
     
     
         7 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the porous backing material is selected from the group consisting of natural material, viscose, rayon, cellulose, polyethylene, polypropylene, polyamide, polyester, polyacetate, polyurethane or a mixture thereof. 
     
     
         8 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the acrylic acid copolymer is produced from monomers of the group consisting of acrylic acid, butyl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, dioctyl acrylate, methyl acrylate, ethyl acrylate, tert-butyl acrylate and mixtures thereof. 
     
     
         9 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the intermediate layer material is applied to the porous backing material in a quantity of from 10 to 300 g/m 2 . 
     
     
         10 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the intermediate layer material is applied to the porous backing material in a quantity of from 10 to 200 g/m 2 . 
     
     
         11 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the intermediate layer material is applied to the porous backing material in a quantity of from 10 to 100 g/m 2 . 
     
     
         12 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the intermediate layer material is applied to the porous backing material in a quantity of 33 g/m 2 . 
     
     
         13 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein one side of the porous backing material is covered 30 to 100% with the intermediate layer material. 
     
     
         14 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein one side of the porous backing material is covered 50 to 100% with the intermediate layer material. 
     
     
         15 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein one side of the porous backing material is covered 70 to 100% with the intermediate layer material. 
     
     
         16 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein one side of the porous backing material is covered 80 to 100% with the intermediate layer material. 
     
     
         17 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the adhesive silicone gel layer is applied to the intermediate layer in a quantity of from 10 to 500 g/m 2 . 
     
     
         18 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the adhesive silicone gel layer is applied to the intermediate layer in a quantity of from 50 to 200 g/m 2 . 
     
     
         19 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the adhesive silicone gel layer is applied to the intermediate layer in a quantity of from 80 to 120 g/m 2 . 
     
     
         20 . The method for producing a silicone-gel-coated adhesive layer structure according to  claim 1 , wherein the adhesive silicone gel layer is applied to the intermediate layer in a quantity of 100 g/m 2 .