Fastener Stringer Provided with Knit Tape

Abstract

The present invention provides a fastener stringer comprising a knit fastener tape of a warp knit structure having an element mounting portion and a tape main portion, and a coiled plastic element row sewed on the element mounting portion wherein, two needle yarns for sewing the element row on the element-mounting portion are so arranged that they interpose a wale whereby two sewing lines, are formed, and any one of knitting yarns that straddle an inside sewing line of the two sewing lines has a fineness of 72-330 dTex and substantially all of the other knitting yarns have a fineness of 56-167 dTex, provided that the one of the knitting yarns that straddle the inside sewing line of the two sewing lines is thicker than substantially all of the other knitting yarns. The fastener stringer has both a light weight and a high strength.

1 . A fastener stringer comprising a knit fastener tape of a warp-knit structure having an element-mounting portion and a tape main portion, and a coiled plastic element row sewed on the element-mounting portion wherein:
 two needle yarns for sewing the element row on the element-mounting portion are so arranged that they interpose a single wale, whereby two sewing lines are formed, and   any one of knitting yarns that straddle an inside sewing line of the two sewing lines has a fineness of 72-330 dTex, and substantially all of the other knitting yarns have a fineness 56-167 dTex,   provided that the one of knitting yarns that straddle the inside sewing line of the two sewing lines is thicker than substantially all of the other knitting yarns.   
     
     
         2 . A fastener stringer comprising a knit fastener tape of a warp-knit structure having an element-mounting portion and a tape main portion, and a coiled plastic element row sewed on the element-mounting portion, wherein:
 two needle yarns for sewing the element row on the element-mounting portion are so arranged that they interpose a single wale, whereby two sewing lines are formed,   any one of knitting yarns that straddle an inside sewing line of the two sewing lines has a fineness of 72-330 dTex, and substantially all of the other knitting yarns have a fineness 56-167 dTex, and   the outermost knitting yarn in the element-mounting portion has a fineness of 66-275 dTex,   provided that the one of knitting yarns that straddle the inside sewing line of the two sewing lines as well as the outermost knitting yarn in the element-mounting portion are thicker than substantially all of the other knitting yarns.   
     
     
         3 . The fastener stringer according to  claim 1 , wherein the number of stitches where three knitting yarns are interlooping in one stitch account for at least 50% of the total number of stitches. 
     
     
         4 . The fastener stringer according  claim 1 , wherein the tape is knitted with three types of yarns in total, namely, chain knitting yarn, tricot knitting yarn and one of satin knitting yarn and modified two-needle stitch yarn. 
     
     
         5 . The fastener stringer according to  claim 1 , wherein the one of knitting yarns that straddle the inside sewing line of the two sewing lines is selected from the group consisting of tricot knitting yarn, satin knitting yarn and modified two-needle stitch yarn. 
     
     
         6 . The fastener stringer according to  claim 1 , wherein the wale which is interposed by the two needle yarns for sewing on the element row is the second wale as counted from the outermost side of the element-mounting portion. 
     
     
         7 . The fastener stringer according to  claim 1 , wherein the needle yarn has a fineness of 100-350 dTex. 
     
     
         8 . A slide fastener provided with the fastener stringer according to  claim 1 . 
     
     
         9 . An article on which the slide fastener according to  claim 8  is sewed.