Process and equipment for the coating of a web
CA 1065205 A · Owner: Oy Keskuslaboratorio - Centrallaboratorium Ab · Inventors: Uggla, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and a process for coating a web particularly a paper, or a board web, with a liquid in which the metering and the distribution of the coating liquid is carried out in a single step by contacting the web with a rotating roll. The roll is received in a feed chamber containing the liquid which is applied to the roll by being immersed in it and the quantity of liquid applied from the roll to the web is metered by means of a doctor blade cooperating with the roll. A second doctor blade is provided on the opposite side of the roll for collecting and separating liquid and return-, ing it for reuse.
Read the whole patent
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 October 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 30, 1996.
- 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.