Fastener Stringer and Slide Fastener

Abstract

A fastener tape of a fastener stringer extends beyond an edge of a fastener element closer to a connecting portion and an extension length is restricted to be smaller than 12 mm. In this way, when the fastener stringer is curved in a tape width direction of the fastener tape, it is possible to effectively suppress a tape extension portion of the fastener tape from partially floating. Thus, it is possible to stably sew the fastener stringer while maintaining the tape extension portion in an approximately flat form even when the fastener tape is curved. Moreover, since floating or the like of the sewn fastener tape occurs rarely, it is possible to prevent deterioration of the quality of external appearance.

1 . A fastener stringer for a slide fastener, including a fastener tape and a continuous fastener element attached to one side edge portion of the fastener tape, and in which the fastener element includes a coupling head, upper and lower leg portions extending in a tape width direction from the coupling head, and a connecting portion that connects the adjacent fastener elements, and the other side edge portion of the fastener tape extends beyond an edge of the fastener element closer to the connecting portion, wherein:
 an extension length of the fastener tape in the tape width direction from a position of an end edge at the connecting portion side of the fastener element to a tape end edge of the fastener tape at the other side edge side is restricted to be smaller than 12 mm.   
     
     
         2 . The fastener stringer according to  claim 1 , wherein the extension length is restricted to 10 mm or smaller. 
     
     
         3 . The fastener stringer according to  claim 2 , wherein the extension length is restricted to 6 mm or smaller. 
     
     
         4 . The fastener stringer according to  claim 1 , wherein:
 the fastener tape is formed of fabrics and includes a tape body portion and an element attaching portion disposed closer to one side edge side of the tape body portion;   an ear portion is disposed in the other side edge portion of the tape body portion; and   warp threads disposed in the ear portion have tensile strength higher than that of warp threads disposed in portions other than the ear portion of the tape body portion.   
     
     
         5 . The fastener stringer according to  claim 4 , wherein four to six warp threads are disposed in the ear portion. 
     
     
         6 . The fastener stringer according to  claim 1 , wherein:
 the fastener tape includes a tape body portion, a tape bent portion extending in the tape width direction from one side edge of the tape body portion so as to be bent in an U-shape, and an element attaching portion which extends further from the tape bent portion and to which the fastener element is attached; and   the fastener element is attached to the element attaching portion of the fastener tape in such a manner that the coupling head protrudes outward from the tape bent portion.   
     
     
         7 . The fastener stringer according to  claim 6 , wherein:
 the fastener element is woven into the element attaching portion simultaneously with weaving of the fastener tape.   
     
     
         8 . The fastener stringer according to  claim 1 , wherein:
 the fastener tape includes a tape body portion and an element attaching portion which extends in the tape width direction from one side edge of the tape body portion and to which the fastener element is attached; and   the fastener element is attached to the element attaching portion of the fastener tape in such a manner that the coupling head protrudes outward from a tape side edge closer to the element attaching portion.   
     
     
         9 . A slide fastener including the fastener stringer according to  claim 1 .