Title:
METHOD AND DEVICE FOR CONTROLLING THE COMPOSITION OF A SOLUTION/SOLUTIONS DURING THE PRODUCTION OF CELLULOSE SHAPED BODIES
Document Type and Number:
WIPO Patent Application WO2001025516
Kind Code:
A9
Abstract:
The invention relates to a method for producing cellulosed shaped bodies. (a) Cellulose and an aqueous aminoxide are mixed, whereby a suspension is produced. (b) A cellulose solution is produced from the suspension, whereby water evaporates. (c) A first property or a physical behaviour of the produced cellulose solution is measured and the measured value is used for correcting the composition of the solution and (d) the cellulose solution is extruded through a gap of air and into an aqueous regenerating bath where said solution is coagulated to form shaped bodies which can go through additional treatment steps. The invention is characterised in that a second property of the produced cellulose solution is measured in step (c), said second property being different from the first property. The real composition of the solution is calculated by means of the measured values of both properties. The deviation from a desired composition is used for controlling the composition of the solution. The inventive method enables to exactly control the composition of the spinning solution.
Inventors:
NIEMZ FRANK-GUENTER (DE)
MEYER WILHELM (DE)
MAINZER ALTHOF TANJA (DE)
MEYER WILHELM (DE)
MAINZER ALTHOF TANJA (DE)
Application Number:
PCT/DE2000/003410
Publication Date:
September 06, 2002
Filing Date:
September 29, 2000
Export Citation:
Assignee:
ALCERU SCHWARZA GMBH (DE)
NIEMZ FRANK-GUENTER (DE)
MEYER WILHELM (DE)
MAINZER ALTHOF TANJA (DE)
NIEMZ FRANK-GUENTER (DE)
MEYER WILHELM (DE)
MAINZER ALTHOF TANJA (DE)
International Classes:
C08B1/00; C08B16/00; C08J5/18; C08L1/02; D01F2/00; (IPC1-7): D01F2/00; C08J5/18; C08L1/02
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