Process for producing multifilaments
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United States of America Patent
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-
Feb 1, 1994
Grant Date -
N/A
app pub date -
Jan 4, 1993
filing date -
Jan 9, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for producing multifilaments which has the steps of: melt spinning a polyolefin at a first temperature; cooling the spun filaments with a first chill means which is of a non-contact type and is held at a second temperature; cooling the filaments at a third temperature with a second chill means which is of a contact type for forcibly cooling the filaments; and drawing continuously the filaments at high draw ratio in-line with heating rolls having a predetermined surface temperature so that the filaments cooled at the third temperature are directly and continuously treated by the heating rolls.
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