Machine for bonding films made of different materials, in multiple layers, and the corresponding method
CA 2544777 C · Owner: Cerciello, Antonio · Inventors: Cerciello, Antonio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a machine designed to bond a number of layers of film made of different materials using solventless adhesive, to obtain a single multi-ply film consisting of a series of layers having different characteristics. The machine according to the invention comprises an ordinary drum (2) associated with a plurality of spreader/applicator units (3 4, 5), each of which comprises a tank of adhesive and means for taking up said adhesive and transferring it in the form of a thin layer to an applicator roller which moves in contact with the drum. Each of the films to be bonded is fed to one of the zones formed between the drum (2) and said spreader/applicator units (3 4, 5), …
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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 21, 2006 and granted February 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2026.
- 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.