| US 7,520,304 B2 | ||
| Fastener stringer of concealed type slide fastener | ||
| Muchiji Shimono, Toyama-ken (Japan); and Akihiro Yagyu, Toyama-ken (Japan) | ||
| Assigned to YKK Corporation, Tokyo (Japan) | ||
| Filed on Nov. 06, 2007, as Appl. No. 11/983,029. | ||
| Claims priority of application No. 2006-303696 (JP), filed on Nov. 09, 2006. | ||
| Prior Publication US 2008/0110211 A1, May 15, 2008 | ||
| Int. Cl. A44B 19/54 (2006.01) | ||
| U.S. Cl. 139—384B [24/393] | 8 Claims |
| 1. A fastener stringer for a concealed type slide fastener, comprising: a pair of right and left woven fastener tapes, each
of the fastener tapes having a tape main body portion and an element attaching portion formed on a side edge of the tape main
body portion; and right and left continuous fastener element rows woven into the element attaching portion at a same time
when the fastener tapes are woven,
each element of each of the fastener element rows having: a coupling head; upper and lower leg portions extending from the
coupling head and woven into the element attaching portion; and a connecting portion for connecting the upper and lower leg
portions of adjoining elements, and
the side edge of the tape main body portion being folded back into an U shape, and the coupling head of the fastener element
row being projected outward from an U-shaped folded back portion, wherein the element attaching portion comprises:
a plurality of upper fixing warp yarns and lower fixing warp yarns which run in a warp direction on outside faces of the upper
leg portion and the lower leg portion of each element of the fastener element row; and
a plurality of tightening warp yarns which intersect one another between the upper and lower leg portions of the element and
run in the warp direction so as to stride over the upper leg portion and the lower leg portion alternately, and
among the plurality of lower fixing warp yarns, a total fineness of the lower fixing warp yarns running on a side of the coupling
head with respect to the tightening warp yarns is higher than a total fineness of the upper fixing warp yarns running on the
side of the coupling head with respect to the tightening warp yarns.
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