Process for producing multifilaments
US5283025A · kind A · utility
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2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 1993 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Jan 4, 2013 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.