Ykk Corporation

Norio Uozumi

Yoshito Ikeguchi

Hidenobu Kato

Yoshio Matsuda

Takashi Saito

Toru Yabuya

A knitted fastener stringer has a chain stich yarn disposed on the innermost edge wale furthest from the tape body portion of an element attaching portion is the thickest of all the chain stich yarns used in a fastener tape. This enables a distance of a gap formed between left and right fastener tapes to be smaller when a slide fastener is formed by two knitted fastener stringers.

Knitted fastener stringer, fastener chain, and method for manufacturing knitted fastener stringer

In just one separate fastener stringer, a slider stops turning due to collision between a flange of the slider and a fastener element after turning in a direction a connecting pillar of the slider moves away from the fastener element provided in the just one separate fastener stringer. At this time point, an opposed tape side extending toward the flange forms an angle of less than or equal to 45&#xb0; with respect to a center line of the slider.

Slider and slide fastener

In a knitted fastener stringer, a fastener element is fixed by a fixing chain stitch yarn disposed on an element attaching portion of a fastener tape. This fixing chain stitch yarn has a first needle loop which is knitted into a ground structure and a second needle loop which fixes upper and lower leg portions of the fastner element. As a result, it is possible to achieve an improvement of productivity and a large reduction of a manufacturing cost by increasing a knitting speed and further to stably obtain flexibility and a soft texture in the knitted fastener stringer.

Knitted fastener stringer

A knitted slide fastener in which a stable knitted mode of a knitting structure is maintained, and a fastener element row is strongly attached to a warp knitting fastener tape. A fixing chain knitting yarn of the fastener element row in the fastener element attaching portion and knitting yarns configuring a ground structure are knitted with independent single structures, respectively. Needle loops which are connected to each other in a longitudinal direction of the fixing chain knitting yarn mounts each of element legs of the continuous fastener element row, sinker loops which are connected to each other in the longitudinal direction of the fixing chain knitting yarn go under a sinker loop of a second warp knitting yarn which configures the ground structure and cross each other.

Knitted slide fastener

A multifilament yarn composed of multiple filaments as thin as 0.5 to 1.5 dTex is used for all warp knitting yarns () and warp weaving yarns (to-N) of a tape main body (A). As for an exposed portion on a side of a coupling head of each element covered with multiple fixing yarns (), when it is assumed that a distance from a front end of each coupling head (Eh) to an inside face of a connecting portion (Ec) is (a) while a dimension of a covered portion of an element (E) covered with the fixing yarns () in a direction of a leg portion (El) thereof is (b), a value of a ratio (b/a) is larger than 1/2 and 4/5 or less. As a consequence, it is possible to obtain a knitted/woven concealed type slide fastener in which fastener elements are attached strongly in a stable manner, and even if a strong lateral force is applied to the slide fastener during usage, a coupling portion of a fastener element row is difficult to be seen from outside, the knitted/woven concealed type slide fastener being thin and plastic.

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Toyama, Japan

Norio Uozumi