Abstract:
A slide fastener stringer of the woven type in which the tape has a ground weave provided with warp threads and a weft formed of double-weft passes on a needle loom. The coupling element is of the continuous, preferably coil, monofilament synthetic-resin type in which the two shanks of each coupling member are formed as a double-weft insertion connected in the weaving process with the ground weave of the tape. According to the invention, the warp sheds interwoven the double-weft of the ground weave are separate from the warp yarns interwoven with the double-weft insertions of the monofilament and are spaced or offset therefrom in a direction orthogonal to the slide fastener plane. Some warp yarns are interwoven with the double-weft of the ground weave and run over the shanks of monofilament.
Abstract:
A slide fastener stringer of the woven type in which the tape has a ground weave provided with warp threads and a weft formed of double-weft passes on a needle loom. The coupling element is of the continuous, preferably coil, monofilament synthetic-resin type in which the shanks of each coupling member are formed as a double-weft connected in the weaving process with the ground weave of the tape. According to the invention, the warp passes receiving the double-weft of the ground weave are separate from the warp passes receiving the double-wefts of the monofilament and are spaced or offset therefrom in a direction orthogonal to the slide fastener plane. Some of the warp threads form the passes over the double-weft of the ground weave and run over the shanks to form the passes for the double-weft of the monofilament.
Abstract:
A slide-fastener stringer has a tape formed from a ground weave with double wefts interwoven with a warp and a coupling element disposed along the edge of the tape and held thereto by binding warps. The coupling element is of the type in which a synthetic resin monofilament is coiled to form coupling heads whose shanks are disposed one above the other so that they have a common projection in the slide fastener plane. The shanks are connected to those of successive heads by bights. The coupling warp comprises a plurality of warp yarns whose patterns are offset by two picks and which each pass over two coupling elements, under a double weft between coupling elements, over another coupling element and then under the next coupling element in a repeating pattern.
Abstract:
In a slide fastener in which the row of coupling elements is woven into the tape, the warp yarns are formed in part with binding warp yarns in two or three groups. The warp yarns of the first group pass under double weft insertions between coupling members then over two or three coupling members and then under a coupling member and a double weft of the ground weft yarn underlying same. The binding warp yarns of the second group or arrangement pass over the double wefts between the coupling members and then under the coupling members and the double weft underlying same. A third group or arrangement can also be provided in which the double weft between the coupling members is lifted thereby into a loop and the coupling members are overshot by the binding warp of the third group.
Abstract:
A slide fastener is made from a workpiece formed of a pair of longitudinally extending parallel tapes having confronting edges provided with longitudinally extending and transversely couplable coupling elements. This workpiece is passed along a treatment path through a gapping station, a bottom-stop installing station, a slider-mounting station, a top-stop installing station, and a cutting station. The elements are removed from the tapes at gaps spaced longitudinally of the workpiece in the gapping station and a bottom stop is fitted to the elements at one end of each of the gaps in the bottom-stop installing station. A slider is mounted on the elements at the slider-mounting station between each gap and the following gap and a top stop is fitted to the elements in the top-stop installing station at each gap. Finally the tapes of the workpiece are transversely cut at the gaps at the cutting station into individual slide fasteners. The workpiece is marked upstream of the gapping station at locations spaced apart by predetermined distances and the work piece is stored in buffers downstream of each of the stations except the cutting station and only fed from each buffer into the immediately downstream station when a predetermined length of the workpiece is in the buffer. The marks on the workpiece are detected at each of the stations and the respective steps are triggered only when a one of the marks is detected.
Abstract:
A slide fastener comprises a pair of tape-like units each secured to one edge of an article whose edges are to be connected by movement of a slider along the units. Each tape-like unit comprises a row of interconnected coupling elements formed by a synthetic-resin monofilament, each coupling element having an eye or loop-shaped portion deformed to constitute the coupling head which can be received between coupling heads of the other row. From the eye-forming monofilament segments, shanks extend across the tape-like unit and are received in pockets of a multiplicity of longitudinal threads (e.g. as the weft of a weave in which the longitudinal threads form the warp, or in courses of the warp knit in which the longitudinal threads are loop chains). The slider has a pair of channels which merge into a common channel, the transition zone between the pair of channels and the common channel being superimposed to press the coupling heads of one row between the coupling heads of the other generally perpendicularly to the slide-fastener plane.
Abstract:
A slide fastener comprises a pair of coiled coupling rows of synthetic-resin monofilament with each coupling element having a coupling loop or eye formed with a coupling head, a pair of monofilament segments extending away from the head, and connecting shanks joining adjacent coupling elements together. The shanks are received in pockets formed by longitudinal threads which pass alternately over and under the shanks so that the longitudinal threads and the shanks form a tape-like unit or support structure. Preferably the longitudinal threads constitute a warp with the shanks acting as a weft for the tape-like unit. The coupling elements have a generally elliptical or flattened cross section whereby the coupling eye has its axis generally parallel to the major axis of the cross section of the monofilament.
Abstract:
A slide-fastener stringer comprises, for each slide-fastener half, a support tape formed with a sewing strip and a facing strip, both having warp threads and a base weft thread extending all across both strips while a binding weft thread extends all across the sewing strip while engaging with reverse loops, the continuous coupling element which can be formed of a synthetic-resin monofilament. The monofilament may be of the helical-coil type in which each turn of the coil is formed with a coupling head adapted to fit between the coupling heads of an opposing coupling element, limbs or shanks connected to the head and connecting portions or bights connecting a limb of one head to a limb of the next head. The limbs against the support tape are provided with transverse grooves receiving an insertion thread which is woven into the tape.
Abstract:
In a slide fastener in which the row of coupling elements is woven into the tape, the warp yarns are formed in part with binding warp yarns in two or three groups. The warp yarns of the first group pass under double weft insertions between coupling members then over two or three coupling members and then under a coupling member and a double weft of the ground weft yarn underlying same. The binding warp yarns of the second group or arrangement pass over the double wefts between the coupling members and then under the coupling members and the double weft underlying same. A third group or arrangement can also be provided in which the double weft between the coupling members is lifted thereby into a loop and the coupling members are overshot by the binding warp of the third group.
Abstract:
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 latter 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 in dependence upon the diameter of such yarn. The outside 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 latter yarn bearing on the former against this tension.