Apparatus and method for stuffer box crimping synthetic filament

Details Apparatus and method for stuffer box crimping synthetic filament Apparatus and method for stuffer box crimping synthetic filament

1992-10-26

1996-12-03

Crowder, C. D.

Textiles: manufacturing

Thread finishing

Surface modification of running length

28254, D02G 116

Patent

active

055795668

ABSTRACT:
An apparatus for stuffer box crimping synthetic filament yarns is disclosed, which includes an air nozzle for pulling in and advancing multi-filament yarns at a high speed, and a downstream stuffer box in which the gaseous transport fluid is separated and the yarn is compressed to a compact yarn plug. To increase the production speed and production reliability, the speed at which the yarn is advanced through the air nozzle, and the yarn tension which is produced by the air nozzle is increased. This occurs in accordance with the invention in that the duct for the common advance of the yarn and the transport fluid is configured such that the flow duct narrows in the shape of a nozzle in a first segment down to a restriction at which the outflowing transport fluid reaches the speed of sound, and the duct then widens in a second segment at a small angle of opening.

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