Patent ID: 8317503
Filing Date: 2012-11-27
Classification: B29B,B29C,C08B,D01D,D01F

Abstract:
1. A device for the production of Lyocell fibers, comprising a mixing device, to which a cellulose can be fed and in which a cellulose solution directly or with the formation of a cellulose suspension can be processed with the addition of a treatment medium, a spinning head through which the cellulose solution can be extruded to form endless molded bodies, a conveying device through which the cellulose suspension cellulose solution or combination thereof can be conveyed from the mixing device to the spinning head, a monitoring device, through which a degree of polymerization of the cellulose, of the cellulose suspension, of the cellulose solution or a combination thereof can be monitored during the operation of the device, and a control device, through which the processing duration from the introduction of the cellulose through to the extrusion in the spinning head can be set to be 80 min at the most in dependence of the measured degree of polymerization, the degree of polymerization of the cellulose solution shortly before extrusion is set to a DP value of at least 400 DP.