Process for the production of uniform POY filaments
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United States of America Patent
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Jul 10, 1990
Grant Date -
N/A
app pub date -
Dec 9, 1988
filing date -
Jun 11, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Melt spinning method for the production of pre-oriented low-crystalline synthetic filaments which are distinguished by a high degree of uniformity and by the ability of being worked at high speeds in a friction-draw texturing process, according to which method the damping ratio of the spinning filament between the point of solidification and the winding unit, defined as the ratio of the fluctuation range of the filament tension at the beginning and at the end of the above-defined filament path is <0.10, and a driven roller with a freely rotating additional small roller in multiple wrap-around contact is utilized as the draw-off roller system.
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