Basf Aktiengesellschaft

Basf Farben and Fasern Ag

Rieter Machine Works, Ltd.

Rieter Deutschland Gmbh

Gerhard Conzelmann

Dieter Herion

Hans Knopp

Armin Wirz

Peter Gujer

Dieter Guldenfels

Bernd-Steffen Von Bernstorff

Wolfgang Martin

Paul-Michael Bever

Guenter Leuchtmann

Ulrike Breiner

Heinz Gehrig

A fiber containing a longitudinal core (I) of a polymer and a chemically different surrounding sheath (II), wherein said sheath (II) is based on a polyamide containing a sterically hindered piperidine derivative (III) attached to the polymer chain by chemical bonding.

Multicomponent fiber

A process for the preparation of novel polyamides, the use of such polyamides for the production of fibers, sheets and moldings, and fibers, sheets and moldings obtainable from such polyamides, are provided.

Polyamide

Polyamides

The invention concerns a method of threading in a thread into a texturing nozzle known as such, and an apparatus for implementing the method. The texturing nozzle is brought from a working position into a threading-in position for threading-in, in which position a treatment chamber provided with slots and located upstream from the outlet opening of the texturing nozzle is subject to a vacuum for sucking in a thread brought to a position in front of the inlet opening of the texturing nozzle.

Method of threading a thread into a texturing nozzle

A process for introducing one or more threads into a texturizing nozzle, in which the texturizing nozzle, together with the inlet member, is first brought into a position in which the thread is led transversely past and in the immediate vicinity of the texturizing nozzle, the thread is sucked against the nozzle with the orifice of the inlet member enlarged, immediately after being sucked against the texturizing nozzle the thread is cut beyond the nozzle so that the cut end is sucked back into the nozzle, the suction supply required for the sucking-in is replaced by pressurized fluid texturizing medium, and the cross-section of the inlet orifice of the texturizing device is reduced to a value advantageous for steady state operation. An apparatus for carrying out the above process, comprising a pivotable texturizing nozzle with an inlet member of variable cross-section, and a suction device which permits the pressure to be reduced, relative to atmospheric pressure, at the inlet member of the texturizing nozzle, is also disclosed.

Apparatus for threading up a rapidly travelling thread in a texturizing

Apparatus for threading a thread into a texturizing nozzle

Process for threading up a rapidly travelling thread in a texturizing

A process for texturizing bundles of filaments of synthetic high molecular weight materials at high speed, wherein the filament bundle is passed through a feed nozzle and is then brought into contact with a hot gaseous medium which is undergoing a vortical motion and has acquired a vortex angle of from 10.degree. to 70.degree. as a result of passage through a vortex chamber, is then heated by the fluid medium in a downstream tubular chamber and is subsequently fed to an expansion stage to produce the crimp, and apparatus for carrying out this process.

Process and apparatus for texturizing filament bundles

Apparatus for threading up a texturizing nozzle

Growing community of inventors

Otterstadt, Germany

Gerhard Conzelmann