Process of making a non-circular cross-sectional fiber
US5753166A · kind A · utility
14Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1996 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Oct 21, 2016 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/92
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A melt extrusion composition made by combining about 99.9 to about 98.5 weight percent of at least one polyester and about 0.1 to about 1.5 weight percent additive provides for a polyester or copolyester non-circular cross-sectional fiber having at least four percent improved shape retention as compared to the same fiber made from a melt extrusion composition without the additive. The additive is present at the air-polymer interfacial surface during melt spinning. A method of making the fiber is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.