Patent ID: 11946165
Assignee: AUROTEC GMBH
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D | IPC D

Claim 0:
1. A method for producing solid cellulose filaments from a cellulosic fluid, the method comprising the steps of: extruding said fluid through a plurality of extrusion openings, whereby fluid filaments are formed; and solidifying said filaments in a coagulation bath; wherein the filaments are bundled and deflected as a bundle in the coagulation bath in order to be drawn from the coagulation bath above the coagulation bath level, the bundle of filaments occupies a deflection width L on a deflection device, the deflection width L being controlled according to the formula:

L>(2×LZ×cos(B/2)×v2,5)/(10×ccell0,5×Q),

wherein L is the deflection width of the bundle in mm, LZ is the number of extrusion openings, B is the deflection angle (calculated as 180° minus the wrap angle of the filaments around the deflection device in angular degrees), v is the drawing speed of the filaments in meters per second, ccell is the cellulose concentration of the extruded fluid in % by mass and Q is a dimensionless load number, wherein Q is 15 or lower.