Method for manufacturing filaments from an optically anisotropic spinning solution and air gap spinning device
US8080197B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2003 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Nov 11, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F6/605
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention pertains to a method for manufacturing filaments from an optically anisotropic spinning solution in which the spinning solution is extruded through a spinneret including a spinning field with a plurality of spinning orifices into a coagulation bath through a slot or diaphragm, the edges thereof being formed by plates with upper and lower sides. The upper sides of the plates are defined as the sides having the shortest distance to the spinning field, wherein the line through the center of the spinning field and perpendicular to the upper sides is located a distance (d) from a parallel line through the center of the slot or diaphragm. The projection of the slot or diaphragm has about the same size and shape as the projection of the spinning field. The plane of the upper side of one plate has a shorter distance to the center of the spinning field than the plane of the upper side of the other plate, and the line has a smaller distance to the edge of plate than to edge of plate. Furthermore, the invention pertains to an air gap spinning device for performing the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.