Napped leather-like sheet-shaped article

Abstract

A napped leather-like sheet-shaped article includes a fibrous substrate which is a woven fabric or a knitted fabric, and a resin applied to the fibrous substrate, and includes, on a front surface thereof, a napped surface having naps with the resin adhering thereto. The number of structure points of yarns constituting the fibrous substrate per 25.4 mm square is 1,500 to 10,000 in the case of a woven fabric, and is 3,000 to 9,000 in the case of a knitted fabric. The total number of fibers involved in crossing or entanglement at structure points per 25.4 mm square is 396,000 to 2,640,000 in the case of a woven fabric, and is 912,000 to 8,208,000 in the case of a knitted fabric. The constant load elongation rate is 5% or more, and the constant load set rate is less than 10%.

1 . A napped leather-like sheet-shaped article comprising: a fibrous substrate that is a woven fabric or a knitted fabric; and a resin applied to the fibrous substrate,
 wherein the napped leather-like sheet-shaped article includes, on a front surface thereof, a napped surface having naps formed from fibers constituting the fibrous substrate, the naps having the resin adhering thereto,   the number of structure points of yarns constituting the fibrous substrate per 25.4 mm square of the sheet-shaped article is 1,500 to 10,000 when the fibrous substrate is a woven fabric, and is 3,000 to 9,000 when the fibrous substrate is a knitted fabric,   the total number of fibers involved in crossing or entanglement at the structure points per 25.4 mm square of the sheet-shaped article is 396,000 to 2,640,000 when the fibrous substrate is a woven fabric, and is 912,000 to 8,208,000 when the fibrous substrate is a knitted fabric, and   the constant load elongation rate is 5% or more in both the warp direction and the weft direction of the sheet-shaped article, while the constant load set rate is less than 10% in both the warp direction and the weft direction of the sheet-shaped article.   
     
     
         2 . The napped leather-like sheet-shaped article according to  claim 1 , wherein the number of structure points of yarns constituting the fibrous substrate per 24-25.4 mm square of the sheet-shaped article is 3,500 to 9,000 when the fibrous substrate is a knitted fabric. 
     
     
         3 . The napped leather-like sheet-shaped article according to  claim 1 , wherein the fibrous substrate is a circular-knitted knitted fabric. 
     
     
         4 . The napped leather-like sheet-shaped article according to  claim 1 , wherein the fibrous substrate is an interlock-knitted knitted fabric. 
     
     
         5 . The napped leather-like sheet-shaped article according to  claim 1 , wherein the fibrous substrate is a satin-weave multi-ply woven fabric. 
     
     
         6 . The napped leather-like sheet-shaped article according to  claim 1 , wherein the resin is present at least on the front surface side where the naps are present in the thickness direction of the fibrous substrate. 
     
     
         7 . The napped leather-like sheet-shaped article according to  claim 1 , wherein the resin is a polyurethane resin alone or a mixture of a silicone resin and a polyurethane resin. 
     
     
         8 . The napped leather-like sheet-shaped article according to  claim 1 , wherein the sheet-shaped article has no nap formed on a back surface thereof, and the back surface is provided with a backing. 
     
     
         9 . The napped leather-like sheet-shaped article according to  claim 8 , wherein the backing contains a flame retardant and a binder resin. 
     
     
         10 . The napped leather-like sheet-shaped article according to  claim 1 , wherein the density of the fibrous substrate is such that when the fibrous substrate is a woven fabric, it has a warp density of 200 to 500 yarns/25.4 mm and a weft density of 50 to 150 yarns/25.4 mm, and when the fibrous substrate is a knitted fabric, it has 40 to 110 courses/25.4 mm and 30 to 70 wales/25.4 mm.