Barmag Ag

Saurer Gmbh & Co. Kg

Klaus Schafer

Georg Stausberg

Wolfgang Imping

Heinz Schippers

Egon Gathmann

Rahim Gross

Tobias Binner

Friedel Dickmeiss

Peter Berger

Ernst Callhoff

Gerhard Koslowski

A method and an apparatus for stuffer box crimping a multifilament yarn, wherein the yarn is conveyed into a crimping device in two steps. In the first step, the yarn is taken in by a conveying fluid stream of a first feed nozzle at a yarn intake speed. In the second step the yarn is advanced by a conveying fluid stream of a second feed nozzle at a second yarn conveying speed into the crimping device. In this process, the second yarn conveying speed is at least the same as or greater than the intake speed.

Method and apparatus for stuffer box crimping an advancing multifilament yarn

A method and an apparatus for spinning a multifilament yarn of a thermoplastic material, wherein the thermoplastic material is extruded through a spinneret to form a downwardly advancing filament bundle. The filaments then advance through a cooling device with two cooling zones. In the first cooling zone, an air stream is directed substantially transverse to the direction of the advancing filaments, and in the second cooling zone, cooling occurs by a cooling stream composed of a mixture of air and liquid, with the cooling stream flowing oppositely to the direction of the advancing filaments. The advancing filaments are gathered to form a multifilament yarn, which is then wound into a package.

Method and apparatus for spinning a multifilament yarn

A melt spinning apparatus for extruding and spinning thermoplastic filaments as part of the fabrication of a multi-filament yarn. The apparatus includes a plurality of spinning units arranged in a row in a gas tight heated container, and each spinning unit comprises upper and lower coaxial pipes which are interconnected by means of a common supporting plate. The melt metering pump and the spinneret assembly are mounted within the pipes. A method of fabricating the apparatus is also disclosed.

Melt spinning apparatus

Spin beam for spinning a plurality of synthetic filament yarns and

An apparatus and method for melt spinning polymeric yarns, wherein a main melt flow is generated by an extruder and supplied to a spin head. The spin head is enclosed in a heated spinning beam and comprises a mixer, a distributor pump and a plurality of spinnerets. A feed device generates a secondary flow which is supplied to the main melt flow for the purpose of additive admixture. The secondary flow and the main melt flow are combined inside the spinning beam.

Apparatus and method for spinning polymeric yarns

An extruder for melting plastic granules which is designed as a two-stage system in an integrated structural unit with an extruder chamber having an extruder screw in a heatable housing, as well as with a drying chamber having a heated conveying screw with displacement elements which dry the plastic granules and axially convey them to the extruder chamber without compression. In a preferred embodiment, the conveying screw has a larger diameter than the extruder screw, and displacement elements of greater depth than the extruder screw.

Extruder for plastic granules

A method and apparatus for continuously producing an endless thermoplastic material, such as yarn or tape, and winding the material into a package. A physical parameter of the package, such as its diameter or weight, is monitored, and a control signal is generated which is a function of the monitored physical parameter. The control signal is then compared to a predetermined reference signal, and an output signal is generated when the difference between the control signal and the reference signal exceeds a predetermined deviation. The output signal thus represents the quality of the material in the package, and it may be used to permit classification of the final product or to control the operating conditions of the apparatus so as to maintain a desired quality level.

Method and apparatus for producing a wound package of an endless

A method and apparatus for the intense crimping of a multifilament yarn in a stuffer box is disclosed, and wherein a false twist is imparted to the advancing yarn at a location upstream of the stuffer box, and with the intensity of the false twist being periodically or aperiodically varied.

Growing community of inventors

Remscheid, Germany

Klaus Schafer