Method and apparatus for applying coating liquid to a moving base
CA 1324740 C · Owner: Rantanen, Rauno · Inventors: Lummila, Markku; Rantanen, Rauno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus for applying coating liquid onto a moving base, such as paper or board web, the surface of a counter-roll or the like wherein the coating liquid is fed under pressure into e coating liquid chamber of a coating device defined by a coating member, a front wall, edge seals and by a region of the moving base to be coated. In order to seal the front wall of the coating device against the passage of air with respect to the moving base and/or to lubricate the front wall and moving base with respect to each other a fluid material, such as a liquid, dispersion solution or the like, is fed to an inlet side of the moving base region forward of the base region and front member in …
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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 November 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
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.