Textile fabric sheet having stain and liquid resistance and the preparation method thereof

Abstract

A textile fabric sheet having stain and liquid resistance includes (a) a fabric substrate, (b) a first polyurethane coating layer formed on a first surface of the fabric substrate; (c) a second aqueous acrylic coating layer formed on the first coating layer of the polyurethane coating layer; and (d) a third stain-resistant coating layer formed on the second aqueous acrylic coating layer. A method of preparing the textile fabric sheet is provided. The texture characteristic of the fabric substrate itself can be exhibited, and due to the polyurethane coating layer, the aqueous acrylic coating layer and the stain-resistant coating layer stacked in three steps, excellent water resistance, stain resistance and air permeability can be exhibited.

What is claimed is: 
     
         1 . A method of preparing a textile fabric sheet having stain and liquid resistance, comprising:
 (i) knife-coating a polyurethane coating composition on a first surface of a fabric substrate at least once and drying the polyurethane coating composition to form a first polyurethane coating layer;   (ii) knife-coating an aqueous acrylic coating composition on the top of the first polyurethane coating layer at least once and drying the aqueous acrylic coating composition to form a second aqueous acrylic coating layer; and   (iii) knife-coating a stain-resistant coating composition on the top of the second aqueous acrylic coating layer at least once and drying the stain-resistant coating composition to form a third stain-resistant coating layer to provide the textile fabric sheet,   wherein the textile fabric sheet comprises   the fabric substrate,   the first polyurethane coating layer formed on the first surface of the fabric substrate,   the second aqueous acrylic coating layer formed on the first polyurethane coating layer, and   the third stain-resistant coating layer formed on the second aqueous acrylic coating layer.   
     
     
         2 . The method according to  claim 1 , wherein, in at least one knife-coatings in steps (i) to (iii), a width angle of the knife ranges from 50° to 150°. 
     
     
         3 . The method according to  claim 1 , wherein the polyurethane coating composition in step (i) comprises: a polyurethane resin in an amount of 60-80 parts by weight; a curing agent in an amount of 0.1-3 parts by weight; and an organic solvent in an amount to balance the composition to 100 parts by weight, based on 100 parts by weight of the polyurethane coating composition. 
     
     
         4 . The method according to  claim 3 , wherein an applying amount of the polyurethane resin in a first polyurethane coating layer in step (i) ranges from 10 g/m 2  to 30 g/m 2 . 
     
     
         5 . The method according to  claim 1 , wherein the aqueous acrylic coating composition in step (ii) comprises: an acrylic resin in an amount of 30-50 parts by weight; a softening agent in an amount of 1-5 parts by weight; an antifoaming agent in an amount of 1-5 parts by weight; a water repellent agent in an amount of 1-5 parts by weight; and water in an amount to balance the composition to 100 parts by weight, based on 100 parts by weight of the composition. 
     
     
         6 . The method according to  claim 1 , wherein an applying amount of a second aqueous acrylic coating composition in step (ii) ranges from 25 g/m 2  to 75 g/m 2 . 
     
     
         7 . The method according to  claim 1 , wherein the stain-resistant coating composition in step (iii) comprises:
 (i) a polyurethane resin in an amount of 20-40 parts by weight;   (ii) a silicone resin in an amount of 1-10 parts by weight;   (iii) inorganic particles in an amount of 1-10 parts by weight; and   (iv) an organic solvent in an amount to balance the composition to 100 parts by weight, based on 100 parts by weight of the composition.   
     
     
         8 . The method of preparing a textile fabric sheet of  claim 1 , wherein an applying amount of a third stain-resistant coating composition in step (iii) ranges from 10 g/m 2  to 30 g/m 2 . 
     
     
         9 . The method of preparing a textile fabric sheet of  claim 1 , wherein the method further comprises a step (i-1) of dip-coating the fabric substrate in a solution containing a water repellent agent and drying the substrate to form a fifth water repellent layer on a surface of the fabric substrate, before or after step (i). 
     
     
         10 . The method according to  claim 9 , wherein a water repellent layer in step (i-1) comprises a silicone-based water repellent agent, a fluorine-based water repellent agent, or a mixture thereof, and a total applying amount of the water repellent agents ranges from 1 g/m 2  to 10 g/m 2 . 
     
     
         11 . The method according to  claim 9 , wherein the method further comprises a step (i-2) of coating an oil-based acrylic composition on a second surface of the fabric substrate and drying the oil-based acrylic composition, between step (i) and step (ii), to form a sixth acrylic coating layer,
 wherein the second surface of the fabric substrate is opposite to the first surface of the fabric substrate and is coated with the fifth water repellent layer, and   wherein the oil based acrylic composition has different components from the aqueous acrylic coating composition in step (ii).   
     
     
         12 . The method according to  claim 11 , wherein an applying amount of an oil-based acrylic composition in step (i-2) ranges from 1 g/m 2  to 15 g/m 2 .