Continuous hollow filament, yarns, and tows
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United States of America Patent
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Oct 18, 1994
Issued Date -
N/A
app pub date -
Nov 9, 1992
filing date -
Jan 30, 1986
priority date (Note) -
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Abstract
Hollow polyester undrawn filaments having excellent mechanical quality and uniformity are prepared by a simplified post-coalescence melt spinning process at speeds of e.g. 2-5 km/min by selection of polymer and spinning conditions whereby the void content of the undrawn filaments can be essentially maintained or even increased when drawn cold or hot, with or without post heat-treatment.
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