Hollow polymer fibers using rotary process
US5622671A · kind A · utility
21Cited by
19References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1995 |
| Grant date | Apr 22, 1997 |
| Priority date | — |
| Expiry date | Dec 12, 2015 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01D5/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a method for producing hollow polymer fibers, molten polymer is supplied to a rotating polymer spinner having a peripheral wall. The spinner rotates so that molten polymer is centrifuged through a first tube extending through the peripheral wall of the spinner to form fibers. Gas is introduced into the interior of the molten polymer to form hollow polymer fibers. The hollow polymer fibers are then collected as a product such as a mat. The hollow polymer fibers produced by the method are microfibers having an average outside diameter of from about 2.5 microns to about 62.5 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.