Curtain coating
CA 1110506 A · Owner: Andax Pty. Ltd. · Inventors: Anson, George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for impregnating flat corrugated paperboard articles with molten wax. A rotary drum enclosed within a horizontal cylindrical housing rotates about a horizontal axis and comprises circumferentially spaced holders which hold the articles to be treated such that they radiate outwardly from a hub of the drum. A curtain coater extends horizontally through the drum to produce a falling curtain of molten wax through which the articles pass successively as they move around the lower part of the housing so as to be successively coated with wax. The coated articles are transported around the upper part of the housing in an inverted condition and are there subjected to jolting action to …
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 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 1998.
- 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.