Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Production of continuous or running length
Patent
1998-11-24
2000-10-17
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Production of continuous or running length
264103, 2642108, 26421114, D01D 512, D04H 303
Patent
active
061326704
ABSTRACT:
A process for spinning polymeric filaments into yarn at high spinning speeds for producing yarn of high quality that includes the steps of extruding molten polymer through a spinneret, providing an aspirator at a preselected position relative to the slinneret and, after start up, adjusting the aspirator distance from the spinneret thereby moving the aspirator drawing force closer to the spinneret, forming a yarn path made from the filaments, supplying a finish to the yarn, and drawing the yam up with a take up wheel The spinning speed of the yarn on the take up reel is increased while moving the aspirator containing the drawing force within five to fifty centimeters to the spinneret. Using this method much higher filament velocities can be reached (above 10,000 meters per minute) without breaking the filaments or the yarn. The essence of the present invention is to be able to alter the position of the drawing for exerted on filaments from the aspirator to within a close distance to the spinneret where material is still in a molten stage and the spin line tensions maximally reduced thereby allowing the take up wheel speed to be significantly increased without breaking the filaments.
REFERENCES:
patent: 5034182 (1991-07-01), Sze et al.
patent: 5141700 (1992-08-01), Sze et al.
patent: 5545371 (1996-08-01), Lu
patent: 5688468 (1997-11-01), Lu
Ason Engineering, Ltd.
Tentoni Leo B.
LandOfFree
Melt spinning process and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Melt spinning process and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Melt spinning process and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-465418