Method of producing a friction texturized polyester filament yarn and yarn made thereby
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United States of America Patent
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-
Dec 3, 1996
Issued Date -
N/A
app pub date -
Apr 15, 1993
filing date -
Mar 23, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The friction texturized polyester filament yarn has a titer of 400 to 600 dtex and a crimpability of at least 45% and can be provided with at least 60 slubs/m. The method of making this friction texturized polyester filament yarn comprises texturizing a flat yarn with a titer of 400 to 600 dtex at a rate of at least 350 m/min and a yarn tension ratio, F2/F1, less than one via a squeezing twister. A set yarn can be made from the friction texturized polyester yarn with the titer of 400 to 600 dtex by heating.
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