A method and a device for dividing a paper web and a paper machine including such a device
CA 2331515 A1 · Owner: Ekstrom, Lars · Inventors: Ekstrom, Lars
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of dividing a formed paper web (1) into at least two part webs (8 9) , during production of creped paper in a paper machine having a cylinder (3) with an adhesive coating to which the web adheres. According to the invention the web is divided in conjuction with the cylinder by one part-web being detached by scraping from the envelope surface at a first web-detaching point (10) while the other part web (9), still adhered to the envelope surface accompanies this surface , to a second web-detaching point (11) situated downstream to, be detached by scraning from the envelope surface at least one part-web being opened off. The invention also relates to a device and 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
- Filed April 29, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2021.
- 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.