Processes for making poly (trimethylene terephthalate) yarns
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United States of America Patent
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Dec 16, 2003
Grant Date -
Oct 18, 2001
app pub date -
Feb 28, 2001
filing date -
Mar 3, 2000
priority date (Note) -
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Abstract
Fine denier poly(trimethylene terephthalate) feed yarns and drawn yarns wherein the drawn yarns are characterized by a denier per filament less than 1.5 and are drawn such that the actual draw ratio is within 10 percent of the predicted draw ratio determined according to: [(elongation to break of the feed yarn)+115]/[(elongation to break of the drawn yarn)+115)].
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