Method of producing a slide-fastener stringer on a needle loom

Details Method of producing a slide-fastener stringer on a needle loom Method of producing a slide-fastener stringer on a needle loom

A - Human Necessities

44

B

26/168, 139/54

A44B 19/54 (2006.01)

Patent

CA 1300860

16714 ABSTRACT OF THE DISCLOSURE A method of producing a continuous slide fastener strip by weaving on an automatic needle loom, warp yarns for support tape and warp yarns for tying-in being guided to form sheds, weaving needles being used to pick weft yarns for the support tape and a plastics monofilament yarn. A weaving needle which reciprocates continuously between an outside position and an inside position is operative to loop the plastics monofilament yarn around a former for forming coupling members, a row thereof being formed continuously from the monofilament yarn, the coupling members of such row each comprising a coupling head and connected arms which form a coupling loop and being joined together by connecting parts. A kinking former is used which is in cross-section substantially rectangular, has a thickness of from 10 to 20% less then the diameter of the plastics monofilament yarn, has a rounded part for kinking extending lengthwise on the coupling-head side and is of a width greater than its thickness by a factor of approximately from 1.75 to 3, the tension of the plastics monofilament yarn infed to the weaving station is adjusted position of the weaving needle is such as to produce an increase in the tension of the plastics monofilament yarn of approximately from 1.5 to 3 times, the monofilament yarn bearing on the former against this tension.

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