Slide fastener stringer

Details Slide fastener stringer Slide fastener stringer

1980-02-19

1981-12-22

Frazier, Roy D.

Buckles, buttons, clasps, etc.

Buckles

One-piece

242051C, A44B 1914

Patent

active

043063381

ABSTRACT:
A slide fastener stringer includes a stringer tape and a series of fastener elements sewn to the stringer tape on one of the opposite surfaces thereof along its one longitudinal edge by means of double locked stitches composed of at least one needle thread and a looper thread. The needle thread includes a thermoplastic monofilament yarn, and the looper thread includes a spun or multifilament yarn. The stitching has been done from the tape side of the slide fastener stringer. Loops of the looper thread project hardly from the topmost surface of the needle thread loops so that a slider is not likely to wear it out. Each of the needle thread has a constricted portion which serves to keep the looper thread loops from becoming loose. After stitching of the fastener elements to the tape, the thermoplastic monofilamentary needle thread has been heatset to suitably shrink and then become dimensionally stable.

REFERENCES:
patent: 3768125 (1973-10-01), Frohlich
patent: 3783476 (1974-01-01), Frohlich
patent: 3815181 (1974-06-01), Sekine
patent: 3854174 (1974-12-01), Yoshida
patent: 4034444 (1977-07-01), Moertel
patent: 4182006 (1980-01-01), Yoshida
patent: 4182007 (1980-01-01), Yoshida et al.

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