Opti Patent-, Forschungs- Und Fabrikations-ag

Opti-holding Ag

Opti Patent- Forschung-und Fabrikations Ag

Opti Patent-, Forschnungs-und Fabrikations-ag

Alfons Frohlich

Karl Griessbaum

Marie-Luise Cappel

Franz Hochlehnert

Jorg Geiger

Werner Rademacher

Anton Probst

Horst Bettin

Heinz Smyczek

Burghardt Neas

Gunter Volter

Julius Dahlmann

Wilhelm Wessling

Walter Passmann

Horst Ranalli

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.

Slide fastener with continuous coupling coil woven into the support tape

A slide fastener has a pair of longitudinally extending and parallel textile tapes having thickened longitudinal edges that are transversely juxtaposed and formed with throughgoing holes at transversely aligned locations and that are provided with respective longitudinally extending rows of transversely projecting and interleavable coupling teeth. A slider having slots fittable over the edges is displaceable along the edges over the teeth in one longitudinal direction for interleaving the teeth and coupling the tapes together transversely and in the opposite direction for disengaging the teeth from each other and decoupling the tapes from each other. Thickened synthetic-resin reinforcement tabs are integrally molded onto the tapes at the locations of the throughgoing holes and extend thereat transversely up to the edges. Synthetic-resin coupling lugs molded on the edges at the locations each have a pair of ribs flanking the respective tape at the respective holes and unitarily joined with each other through the tape at the holes. The lugs and their ribs are engageable through the respective slots of the slider.

Slide fastener

A slide-fastener stringer half has a coupling coil having a row of turns defining a longitudinal passage and each formed with a coupling head, an upper leg and a lower leg extending transversely from the head and flanking the passage, and a bight extending from one of the respective legs to the other leg of the adjacent turn. A knitted tape against which the lower legs engage and from a longitudinal edge of which the heads project is formed of a plurality of outer warp chains adjacent the coil, an upper warp chain overlying both the upper and lower legs of the coils, and a lower warp chain overlying only the lower legs of the coil and extending along the passage between the upper and lower legs of the coil. Thus with this system the group of filaments forming the lower warp chain takes the place of the normally provided filling cord.

Slide-fastener stringer half with knitted-in coupling coil

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.

Manufacture of slide fasteners

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.

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

A coupled slide fastener strip is gripped by at least one clamping member adjacent where a cut is to be made in it on one side at the beginning of a leading coupled slide fastener and on the other side at the end of a trailing coupled slide fastener and then the leading coupled slide fastener is separated from the slide fastener strip held by the clamping members by cutting. Then subsequently, the end piece is mounted at the end position the trailing coupling slide fastener with a clamping member and substantially simultaneously, the leading coupled slide fastener separated from the coupled slide fastener strip is moved with that or another clamping member from a cutting position into a slider drawing position. In the slider drawing position the slider is drawn in the opening direction of the coupled slide fastener and optionally the beginning piece is mounted. After that, the slider is drawn in the closing direction. Finally, the separated trailing coupled slide fastener is released for stacking and the clamping members are repositioned in the cutting position.

Process and apparatus for making coupled slide fasteners

In the process for mounting a slide fastener segment or slide fastener near the opposing edges of two pieces of material, particularly on a slit in a piece of clothing, a slide fastener strip, the slide fastener segment or the slide fastener and the pieces of material are fed to the sewing stations of a two needle sewing machine. The pieces of material in the region between the sewing stations are positioned to form a gap and are curved so that a portion of each hangs substantially vertically from two fold edges or creases in an intervening space between both of the sewing stations. Both slide fastener halves of the open slide fastener segment or the open slide fastener are sewn on from above on the horizontal portion of the pieces of the material along the fold edges. Apparatuses for performing the process according to my invention are also described.

Process and apparatus for mounting a slide fastener near opposing edges

A slide fastener slider has a reversed bend spring member mounted on the slider body and having a spring tongue bend reaching through a window in a fastening portion thereof which is opened in one side. This increases the resilient force with which the tooth or pawl engages the coupling member and also allows the spring element to be thinner than the earlier system in which a sheet metal spring is used.

Slide fastener slider

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.

Woven slide fastener stringer

A method of making a slide-fastener stringer in which a continuously woven tape and a coupling element interwoven with the tape are formed continuously and the coupling elements of the resulting continuous web are gapped to permit insertion of the slider onto the web which can then be subdivided into individual slide-fastener stringers. According to the invention, weft yarns pass beneath the bight connecting the coupling members of the continuous coupling element and over warp yarns which are thereby held over the shanks of the coupling members by these wefts so as to be drawn away from the bights and so as to lock the warp yarns thus bunched together preventing them from raveling upon gapping of the web.

Slide fastener stringer and method of making same

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.

Woven slide-fastener stringer

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.

A slide-fastener stringer is formed by weaving a weft in a warp and simultaneously forming a continuous coupling element along each of the confronting edges of a pair of tapes simultaneously produced by the weaving operation. The synthetic-resin monofilament forming the coupling element is passed around a mandrel between the warp stretches so that the heads of the two coupling elements are produced in interdigitated form. The ground weft yarn is carried from the coupling element side of each set of warps through the shed to the opposite edge of the tape where it is locked into other loops of previous passes of weft by knitting.

Method of and apparatus for making a slide-fastener stringer

A weaving process and apparatus for producing a slide fastener from two continuous plastic filaments (synthetic-resin monofilament), each with a multiplicity of generally helicoidal coupling elements for interlocking with the coupling elements of the opposite filament, each filament being woven integral with the threads of its respective support tape to form a tape-like unit. Each coupling element has a coupling head on a loop and a pair of shanks terminating in bight portions which connect elements of the same tape-like unit. The shanks of each coupling element, which separate the bights from the loops, are held in close abutment by warp threads, with or without weft threads which pass over and under the successive paired abutting shanks of adjacent elements. Even stronger bracing can be obtained with bulbous projections on the shanks and bights, and by extending the coupling elements the entire width of the tape-like unit, replacing all or part of the weft threads. Thus the shanks can extend transversely to the warp over a substantial part or all of the tape-like unit to form the exclusive weft over this part or the entire width of the tape.

Growing community of inventors

Essen, Germany

Alfons Frohlich