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US 7,435,314 B2Granted
Method for the production of a fibrous web
AssigneeVoith Paper Patent GmbH
InventorsNiels Hardt, Michael Schwarz
Life of this patent
Estimating the term…
Abstract
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.
Claims6
A method for the production of a fibrous web, comprising the steps of:
- linking an automatic ash control and an automatic retention control through a model for a dependence between a filler addition and an average retention agent consumption;
- and
- suppressing an interactive build up of said automatic ash control and said automatic retention control using said model;
- changing an amount of said retention agent with each changing of a filler volume according to said model for said dependence between said filler addition and said retention agent consumption.
1 more element
Dependencies are inferred from the claim text.