Voith Patent Gmbh

Voith Paper Patent Gmbh

Niels Hardt

Herbert Holik

Pekka M Typpo

Rudolf Muench

Michael Schwarz

Armin Bauer

Rudolf Münch

Florian Wegmann

Hartmut Abel

Jens Haag

Martin Bickert

Eduard VÄTH

Michael Gross

Uwe Fetzer

In a method for the production of a fibrous web, especially a paper or cardboard web, an automatic ash control system and an automatic retention control system for the reduction or suppression of an interactive build-up of the two controls are linked via a model for the dependence between the filler addition and the retention agent consumption. A computer assisted quality control system is also cited.

Method for the production of a fibrous web

A system for the computer-aided measurement of quality and/or process data during the production and/or conversion of a material web, in particular paper or board web, by way of correlation with raw measured data. The raw measured data is present in the form of other quality and process data during the production or conversion process. Measurements of quality parameters in the laboratory may also be incorporated in the raw measured data. The raw measured data is combined to form data sets which in each case are determined simultaneously. Specific laboratory or quality measurements are selected as target data which, by way of at least one soft-sensor algorithm running in a computer-based operation and linking unit, can be calculated from the other data serving as input data, and each data set containing measured data, which relates approximately to the same monitored volume of web and raw material, in particular paper and paper raw material.

System for computer-aided measurement of quality and/or process data in a paper machine

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Heidenheim, Germany

Niels Hardt