An optical sealing clamp and a method for sealing and cutting polymeric sheets with a laser
CA 2546870 C · Owner: Glopak Inc. · Inventors: Basque, Roland; Levesque, Marc; Cournoyer, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is specially directed towards intermittent motion packaging machines where the packages are momentarily immobilized at a forming station for the time duration of the package sealing and cutting. The polymeric sheets or films (24) are sealed and cut after being exposed to a laser beam (20) in a controlled and optimized manner. The laser beam (20) is shaped with appropriate optical elements (56) to provide a desired intensity profile in the section of the films to be sealed or sealed and cut. With this method, a package (15) can be sealed and cut simultaneously in one exposure step. An optical clamp (30,31) holds the films (40,41) together while they are being …
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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 November 24, 2004 and granted August 27, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2024.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.