Three-layer knitting fabric

Abstract

A knitted fabric having a triple knit ply structure, and is useful for underwear clothes which need high lightness and warmth, has a front surface knit ply having a yarn knit structure, a back surface knit ply having a yarn knit structure and a binding intermediate knit ply constituted from stitching yarns through which the front and back surface knit plies are tuck-stitched together, the stitching yarns are constituted from hollow fibers (for example, hollow filaments having a percentage of hollowness of 10 to 50%).

1 . A knitted fabric having a triple knit ply structure, comprising a front surface knit ply having a yarn knit structure, a back surface knit ply having a yarn knit structure and a binding intermediate knit ply formed from stitching yarns through which the yarn knit structure of the front surface knit ply and the yarn knit structure of the back surface knit ply are tuck-stitched together, 
 the stitching yarns being constituted from hollow fibers.    
     
     
         2 . The knitted fabric having a triple knit ply structure as claimed in  claim 1 , wherein the stitching yarns are polyester multifilament yarns having a thickness of 20 to 170 dtex, and a thickness of individual filaments of 1 to 10 dtex, the individual filaments having a percentage of hollowness of 10 to 55%.  
     
     
         3 . The knitted fabric having a triple knit ply structure as claimed in  claim 1 , having a thickness of 0.5 to 1.5 mm and a basis mass of 80 to 200 g/m 2 .  
     
     
         4 . The knitted fabric having a triple knit ply structure as claimed in  claim 1 , wherein the binding intermediate knit ply has a basis mass of 25 to 60 g/m 2 .  
     
     
         5 . The knitted fabric having a triple knit ply structure as claimed in  claim 1 , having a heat-insulation efficiency (α) of 18% or more.  
     
     
         6 . The knitted fabric having a triple knit ply structure as claimed in  claim 1 , wherein the yarns from which the front surface knit ply is formed are bulky polyester multifilament yarns having a thickness of 20 to 17 dtex, and a thickness of individual filaments of 0.1 to 20 dtex.  
     
     
         7 . The knitted fabric having a triple knit ply structure as claimed in  claim 1 , wherein the yarns from which the back surface knit ply is formed are constituted from at least one type of fibers selected from natural fibers, synthetic fibers, a regenerated fibers and semisynthetic fibers.  
     
     
         8 . The knitted fabric having a triple knit ply structure as claimed in  claim 1 , having a tubular knit structure.