Free-cut warp-knitted elastic fabric and method for production thereof

Abstract

The present invention provides a free-cut warp-knitted elastic fabric and a method for production thereof. The method uses a first guide bar and a second guide bar of a tricot warp knitting machine for knitting, wherein a non-elastic yarn passes across a guide needle of the first guide bar and forms the surface of the fabric by knitting via two needles in a 1×1 warp plain stitch loop mode, and an elastic yarn passes across a guide needle of the second guide bar and forms the inside of the fabric by knitting with the aforementioned non-elastic yarn in the same direction via two needles in a 1×1 double warp plain stitch loop mode. Finally the fabric which has good resilience, can be arbitrarily cut, and has low raveling property, good elasticity and high snagging level is obtained.

What is claimed is: 
     
         1 . A method for producing a free-cut warp-knitted elastic fabric, which uses a first guide bar and a second guide bar of a tricot warp knitting machine for knitting, comprising:
 making a non-elastic yarn pass across a guide needle of the first guide bar and form the surface of the fabric by knitting via two needles in a 1×1 warp plain stitch loop mode, and   making an elastic yarn pass across a guide needle of the second guide bar and form the inside of the fabric by knitting with the aforementioned non-elastic yarn in the same direction via two needles in a 1×1 double warp plain stitch loop mode.   
     
     
         2 . The method according to  claim 1 , wherein the non-elastic yarn comprises a chemical fiber straight yarn and/or a draw textured yarn; and
 preferably, the non-elastic yarn has a fineness of 11-77 dtex.   
     
     
         3 . The method according to  claim 1 , wherein the elastic yarn has a fineness of 22-88 dtex; and
 preferably, the elastic yarn comprises spandex.   
     
     
         4 . The method according to  claim 1 , wherein the temperature of a knitting environment of the method is 20-30° C., and the humidity of the knitting environment of the method is 60-70 RH %. 
     
     
         5 . The method according to  claim 1 , wherein the 1×1 warp plain stitch loop mode is a 1×1 closed warp plain stitch loop mode for the first guide bar, and the 1×1 double warp plain stitch loop mode is a 1×1 closed double warp plain stitch loop mode for the second guide bar. 
     
     
         6 . The method according to  claim 1 , wherein the 1×1 warp plain stitch loop mode is a 1×1 open warp plain stitch loop mode for the first guide bar, and the 1×1 double warp plain stitch loop mode is a 1×1 closed double warp plain stitch loop mode for the second guide bar. 
     
     
         7 . The method according to  claim 1 , wherein the 1×1 warp plain stitch loop mode is a 1×1 closed warp plain stitch loop mode for the first guide bar, and the 1×1 double warp plain stitch loop mode is a 1×1 open double warp plain stitch loop mode for the second guide bar. 
     
     
         8 . The method according to  claim 1 , wherein a dyeing and finishing process of the method comprises: refining the knitted fabric, and then dehydrating for the first time; after dehydration, executing a presetting process, and then performing dyeing treatment; drying the dyed fabric, and finally subjecting a finished product to setting. 
     
     
         9 . A fabric produced by using the method according to  claim 1 .