Opti Patent-, Forschungs- Und Fabrikations-ag

William Prym Gmbh & Co. Kg

Karl Griessbaum

Alfons Frohlich

A woven strip of a zipper half is produced of warp and weft threads. The weft thread is picked in the form of double pick loops. A plastic monofilament forms windings of a closing member row on the woven strip with interlocking heads at one end and winding reversing portions at the other end. During weaving, a main knit thread is guided upwardly between the windings to the upper side of the closing member row to form loops with loop heads that are interlocked by crocheting and form a mesh structure for interlocking the closure member row with the woven strip. Simultaneously, double pick loops of the main knit thread are formed and are interlaced during weaving with additional warp threads positioned underneath the closing member row. The main knit thread is used as a weft thread in the woven strip underneath the closing member row.

Method for manufacturing a woven zipper half

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 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 lengthwise by at least one pick and which each passes over two coupling elements, between the next coupling element and a ground double weft and under a double weft between coupling elements in a repeating pattern. Double weft disposed between consecutive coupling members are drawn upwardly beyond the median plane of the coupling element as ground-weft padding loops.

Woven slide-fastener stringer

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.

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.

Growing community of inventors

Essen, Germany

Karl Griessbaum