| 摘要 |
Controlling composition of solutions containing cellulose and amine oxide, comprises measuring two different properties of solution and using any divergence from desired value to control process Method for producing cellulosic articles comprises: (a) mixing cellulose and an amine oxide to for a suspension; (b) evaporating water to produce a solution; (c) measuring a property of the solution and using the value to adjust the composition of the solution; and (d) extruding the solution into a coagulation bath. A second, different property is measured in stage (c), the actual composition of the solution is calculated from these and the difference from the desired composition used to regulate the process An Independent claim is included for apparatus for carrying out the above process comprising: (a) a mixer (2) fitted with dosing devices (1a, 1b); (b) a dissolving and evaporating device (3); and (c) an extrusion device (4) with precipitation bath (5) connected to the evaporating device by a pipeline (8). A measuring device (9 - 11) is arranged in the pipeline to measure two different properties containers or in the containers themselves which is part of a control circuit to adjust the composition of the solution.
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