| 摘要 |
A nozzle (60) for forming nanofibers by using a pressurized gas stream comprises a center tube (11), a first supply tube (61) that is positioned concentrically around and apart from the center tube (11), a middle gas tube (73) positioned concentrically around and apart from the first supply tube (61), and a second supply tube (77) positioned concentrically around and apa rt from the middle gas tube (73). The center tube (11) and first supply tube (6 1) form a first annular column (69). The middle gas tube (73) and the first supply tube (61) form a second annular column (75). The middle gas tube (73) , and second supply tube (77) form a third annular column (79). The tubes are positioned so that first (71) and second (92) gas jet spaces are created between the lower ends of the center tube (11) and first supply tube (61), a nd the middle gas tube (73) and second supply tube (77), respectively. A method for forming nanofibers from a single nozzle is also disclosed. |
