Method and arrangement for predicting and regulating a paper winding characteristic variable in a paper winding device
CA 2313461 A1 · Owner: Liepold, Helmut · Inventors: Liepold, Helmut; Schaffner, Clemens; Wienholt, Willfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to achieve a constant thickness when winding a paper strip which , represents an essential qualitative parameter in the production process of paper, the linear force (L) or the tensile force of the paper strip are corrected as an influencing force. The relationship between force and the thickness of the ply is determined by conducting measurements and feeding said measurements to a regulator. Winding is generally carried out from the drum to the winding station in winding devices. The invention is based on the relationship between winding and unwinding with the purpose of measuring the difference in thickness of the ply and training a predictor (Pi) with said measured …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 1, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 1, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 1, 2020.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.