Synthetic leather and method for manufacturing synthetic leather

Abstract

The present disclosure relates to a multilayer synthetic leather, at least comprisinga textile arrangement; anda polyurethane based foam;whereinthe polyurethane-based foam is partially fixed to the textile arrangement using a first fixing layer such that the first fixing layer has fixing areas formed by a fixing agent and free areas free from the fixing agent in the same plane.

1 . A multilayer synthetic leather, at least comprising
 a textile arrangement; and   a polyurethane based foam;   
       wherein 
       the polyurethane-based foam is partially fixed to the textile arrangement using a first fixing layer such that the first fixing layer has fixing areas formed by a fixing agent and free areas free from the fixing agent in the same plane. 
     
     
         2 . The synthetic leather according to  claim 1 , wherein the first fixing layer is applied in a punctiform manner, in the form of rhombusses or in the form of bars. 
     
     
         3 . The synthetic leather according to  claim 1 , wherein the first fixing layer is applied in an amount of ≥2 to ≤50 g/m 2 , in particular ≥10 g/m 2  to ≤20 g/m. 
     
     
         4 . The synthetic leather according to  claim 1 , wherein the textile arrangement consists of a textile layer. 
     
     
         5 . The synthetic leather according to  claim 1 , wherein the textile arrangement comprises a textile layer and a water-impermeable membrane, the water-impermeable membrane being partially fixed to the textile layer using a second fixing layer in such a way that the second fixing layer comprises fixing areas formed by a fixing agent and free areas free from the fixing agent in the same plane. 
     
     
         6 . The synthetic leather according to  claim 1 , wherein further a top layer is provided on the polyurethane-based foam. 
     
     
         7 . The synthetic leather according to  claim 6 , wherein the top layer is at least in part formed from a particularly aliphatic polyester-polyurethane dispersion. 
     
     
         8 . The synthetic leather according to  claim 1 , wherein at least one of the first fixing layer and the second fixing layer is formed at least partially from a hot-melt adhesive or from a particularly aliphatic polyester-polyurethane dispersion. 
     
     
         9 . The synthetic leather according to  claim 1 , wherein the polyurethane based foam comprises a silicone. 
     
     
         10 . The synthetic leather according to  claim 1 , wherein the polyurethane-based foam has a solid content of ≥40% by volume, preferably in a range from ≥40% by volume to ≤70% by volume. 
     
     
         11 . A method of manufacturing a multi-layer synthetic leather according to  claim 1 , comprising the steps of:
 a) Providing a support;   b) Optionally, applying a top layer to the support;   c) Applying a polyurethane-based foam to the support or, if a top layer is present on the support, to the top layer;   d) Partially applying a first fixing layer to the polyurethane-based foam or to a textile arrangement to form fixing areas formed by a fixing agent and free areas free from the fixing agent in the same plane;   e) Applying the textile arrangement to the polyurethane-based foam; and   f) Removing the support.   
     
     
         12 . A method of manufacturing a multi-layer synthetic leather according to  claim 1 , comprising the steps of:
 g) Providing a textile arrangement;   h) Providing a polyurethane based foam;   i) Partially applying a first fixing layer to the polyurethane-based foam or to the textile arrangement to form fixing areas formed by a fixing agent and free areas free from the fixing agent in the same plane;   j) Assembling the polyurethane-based foam and the textile arrangement; and   k) Optionally, applying a top layer to the polyurethane-based foam.   
     
     
         13 . The method according to  claim 11 , wherein the first fixing layer is applied in process step d) or in process step i) by using a screen printing process. 
     
     
         14 . The method according to  claim 11 , wherein the support is a grained backing paper. 
     
     
         15 . The method according to  claim 11 , wherein the method comprises the further step of: I) hydrophobizing at least one of the top layer and the foam. 
     
     
         16 . The method according to  claim 12 , wherein the first fixing layer is applied in process step d) or in process step i) by using a screen printing process. 
     
     
         17 . The method according to  claim 12 , wherein the method comprises the further step of: I) hydrophobizing at least one of the top layer and the foam.