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AssigneeYKK Corporation
InventorsYoshimichi Yamakita, Takashi Mori, Tadahiro Inomata
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In a fastener stringer, a continuous fastener element includes a plurality of fine projections disposed on a circumferential surface of a monofilament continuously along a length direction of the monofilament. Moreover, at least the projections disposed on the upper and lower leg parts are twisted with respect to an extension direction of the upper and lower leg parts, and a plurality of the projections disposed on the upper leg part or the lower leg part a twisted state face the same direction. Due to this, a larger number of projections can appear on an exposed surface of the fastener element, light can be diffused and reflected from these projections, and the luster of the monofilament can be stably reduced or removed. Moreover, it is possible to prevent the strength of the monofilament from locally decreasing and to prevent deterioration of the operability of a slider.
A fastener stringer for a slide fastener, in which a continuous fastener element molded from a monofilament made from a thermoplastic resin is attached to a tape edge portion of a fastener tape, and the fastener element includes a coupling head, upper and lower leg parts extending in a tape width direction from the coupling head, and a connecting portion that connects one of the upper and lower leg parts to one of the upper and lower leg parts of the fastener element that is adjacent in a length direction of the fastener tape, wherein:
A method for manufacturing a fastener stringer, including extruding and molding a monofilament using an extrusion molding nozzle, molding a continuous fastener element from the monofilament, and sewing the fastener element to a tape edge portion of a fastener tape to manufacture a fastener stringer, wherein the method includes:
Dependencies are inferred from the claim text.