Method and apparatus for controlling the production of thermal mechanical pulp
CA 1304142 C · Owner: Savonjousi, Aslak · Inventors: Pietinen, Pentti; Savonjousi, Aslak
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and an apparatus for controlling the production of thermomechanical pulp meter chips by metering elements into a feed chest, and by feed elements connected to the feed chest feeds chips for refinement between thermomechanical pulp refining discs. Water is added to the chips prior to feeding the chips between the discs. Moisture content of the thermomechanical pulp is measured after the thermomechanical pulp refiner at least in a semicontinuous fashion by at least one measurement device operating on-line, and on the basis of measured moisture content, the quantity of chips and water to be metered is controlled so as to regulate the moisture content to a desired level of having a …
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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
- Granted June 23, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 2009.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.