Low compaction, pneumatic dewatering process for producing absorbent sheet
CA 2803423 C · Owner: Georgia-Pacific Consumer Products Lp · Inventors: Wendt, Greg A.; Murray, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of making an absorbent cellulosic sheet that includes forming a nascent web from a , papermaking furnish and then rush transferring the web to an open texture fabric. The web is , dried with a fluid distribution membrane bearing against the side of the open texture fabric away , from the web and an anti-rewet felt bearing against the web and applying a , pneumatic pressure , gradient from the fluid distribution membrane through the web. The web is then transferred to a , transfer surface moving at a first speed. The web is then fabric-creped from the transfer surface , using a creping fabric. The creping occurs under pressure in a fabric creping nip, wherein the , fabric is …
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
- Filed June 28, 2005 and granted October 28, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.