Method for producing consolidated non-woven fabrics and non-woven fabrics
CA 1311889 C · Owner: Rhone-Poulenc Rhodia Aktiengesellschaft · Inventors: Maurer, Gunter; Albien, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the production of consolidated nonwoven fabrics for the absorption of water and/or substances with oleophilic and/or lipophilic properties by blow-spinning a melt or a solution of a spinnable polymeric material to textile fibers and/or filaments namely those, with a diameter of 0.1 to 6 µm preferably 0.5 to 3 µm, transforming these textile fibers and/or filaments to a nonwoven fabric, consolidating this fabric and applying a wetting agent to the fabric, as well as nonwoven fabrics produced in this manner. According to the process the consolidation is carried out by means of water jets; a zwitterionic or cationic surfactant is applied to the fabric in a wet-in-wet procedure …
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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 December 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 2009.
- 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.