Process and apparatus for the production of nanofibers
US6520425B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 2001 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Aug 21, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/56
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A nozzle for forming nanofibers by using a pressurized gas stream comprises a center tube, a first supply tube that is positioned concentrically around and apart from the center tube, a middle gas tube positioned concentrically around and apart from the first supply tube, and a second supply rube positioned concentrically around and apart from the middle gas tube. The center tube and first supply tube form a first annular column. The middle gas tube and the first supply tube form a second annular column. The middle gas tube and second supply tube form a third annular column. The tubes are positioned so that first and second gas jet spaces are created between the lower ends of the center tube and first supply tube, and the middle gas tube and second supply tube, respectively. A method for forming nanofibers from a single nozzle is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.