Method for manufacturing water-penetration-preventing double-layer fabric and double-layer fabric

Abstract

A method for manufacturing a water-penetration-preventing double-layer fabric and a double-layer fabric. The double-layer fabric includes two surface layer textures and a cross-linked texture. The two surface layer textures can be respectively formed by a base yarn and a fusible yarn, or each of the two surface layer textures includes the base and fusible yarns. A melting point of the base yarn is higher than that of the fusible yarn, one of the surface layer textures is heated and pressed to melt the fusible yarn to form a barrier layer, the cross-linked texture cross-links the surface layer textures, a space between the surface layer textures is formed with the cross-linked texture provided with a yarn-stacked thickness by a tuck knitting or a transfer knitting, and an increased temperature of the surface layer texture without heating and pressing is not higher than a melting point of the fusible yarn.

What is claimed is: 
     
         1 . A method for manufacturing a water-penetration-preventing double-layer fabric, comprising steps of:
 step one: knitting two surface layer textures with current yarns, wherein the current yarns are selected from a group consisting of a base yarn, a fusible yarn, and a combination thereof, a melting point of the base yarn is higher than a melting point of the fusible yarn, and the two surface layer textures are selected from a first implementation type and a second implementation type, wherein
 in the first implementation type, each of the two surface layer textures comprises the base yarn and the fusible yarn; and 
 in the second implementation type, one of the two surface layer textures is formed with the base yarn, and the other one of the two surface layer textures is formed with the fusible yarn; 
   step two: forming a cross-linked texture by continuously cross-linking the two surface layer textures through a tuck knitting or a transfer knitting, and generating a yarn-stacked thickness during knitting at a reserved space between the two surface layer textures to extend a heat conduction path of the cross-linked texture;   step three: completing an intermediate product, wherein the intermediate product is a double-layer fabric; and   step four: heating and pressing one side of the intermediate product to melt the fusible yarn in one of the two surface layer textures which is heated and pressed and to form a barrier layer which prevents water penetration, wherein during heating and pressing the cross-linked texture, an increased temperature of one of the two surface layer textures that has not been heated and pressed is not higher than the melting point of the fusible yarn due to the yarn-stacked thickness of the cross-linked texture.   
     
     
         2 . The method for manufacturing the water-penetration-preventing double-layer fabric as claimed in  claim 1 , wherein in step two, the cross-linked texture is formed with the current yarns used for knitting the two surface layer textures or formed with an another yarn additionally fed. 
     
     
         3 . The method for manufacturing the water-penetration-preventing double-layer fabric as claimed in  claim 2 , wherein the another yarn additionally fed is selected from a group consisting of a first yarn type, a second yarn type and a third yarn type, wherein
 in the first yarn type, the another yarn additionally fed is the base yarn;   in the second yarn type, the another yarn additionally fed is the fusible yarn; and   in the third yarn type, the another yarn additionally fed is composed of the base yarn and the fusible yarn.   
     
     
         4 . The method for manufacturing the water-penetration-preventing double-layer fabric as claimed in  claim 1 , wherein a material of the fusible yarn is selected from polypropylene (PP) or thermoplastic polyurethane (TPU). 
     
     
         5 . The method for manufacturing the water-penetration-preventing double-layer fabric as claimed in  claim 1 , wherein a temperature for heating and pressing one side of the intermediate product is between 110° C. and 190° C. 
     
     
         6 . The method for manufacturing the water-penetration-preventing double-layer fabric as claimed in  claim 5 , wherein in step four, applying negative pressure to one of the two surface layer textures that has not been heated and pressed. 
     
     
         7 . The method for manufacturing the water-penetration-preventing double-layer fabric as claimed in  claim 6 , wherein in step four, locally heating and pressing one of the two surface layer textures which is heated and pressed with high frequency. 
     
     
         8 . The method for manufacturing the water-penetration-preventing double-layer fabric as claimed in  claim 1 , wherein in step four, is applying negative pressure to one of the two surface layer textures that has not been heated and pressed. 
     
     
         9 . The method for manufacturing the water-penetration-preventing double-layer fabric as claimed in  claim 8 , wherein in step four, locally heating and pressing one of the two surface layer textures which is heated and pressed with high frequency. 
     
     
         10 . The method for manufacturing the water-penetration-preventing double-layer fabric as claimed in  claim 1 , wherein in step four, locally heating and pressing one of the two surface layer textures which is heated and pressed with high frequency. 
     
     
         11 . A water-penetration-preventing double-layer fabric, comprising:
 two surface layer textures, knitted with yarns selected from a group consisting of a base yarn, a fusible yarn or a combination thereof, the two surface layer textures are selected from a first implementation type and a second implementation type, wherein
 in the first implementation type, each of the two surface layer textures comprising the base yarn and the fusible yarn; and 
 in the second implementation type, one of the two surface layer textures being formed with the base yarn, and the other of the two surface layer textures being the fusible yarn; 
   wherein a melting point of the base yarn is higher than a melting point of the fusible yarn, one of the two surface layer textures is heated and pressed and the fusible yarn thereof is melted to form a barrier layer which prevents water penetration; and   a cross-linked texture, cross-linking the two surface layer textures, the cross-linked texture is formed by a tuck knitting or a transfer knitting and comprising a yarn-stacked thickness located at a space between the two surface layer textures, wherein the yarn-stacked thickness at least meets a following condition that within a heating and pressing time, an increased temperature of one of the two surface layer textures that has not heated and pressed is not higher than the melting point of the fusible yarn.   
     
     
         12 . The water-penetration-preventing double-layer fabric as claimed in  claim 11 , wherein the cross-linked texture is formed with the yarns used for knitting the two surface layer textures or formed with an another yarn additionally fed. 
     
     
         13 . The water-penetration-preventing double-layer fabric as claimed in  claim 12 , wherein the another yarn additionally fed is selected from a group consisting a first yarn type, a second yarn type and a third yarn type, wherein
 in the first yarn type, the another yarn additionally fed is the base yarn;   in the second yarn type, the another yarn additionally fed is the fusible yarn; and   in the third yarn type, the another yarn additionally fed is composed of the base yarn and the fusible yarn.   
     
     
         14 . The water-penetration-preventing double-layer fabric as claimed in  claim 11 , wherein a material of the fusible yarn is selected from polypropylene (PP) or thermoplastic polyurethane (TPU).