Heat-sealing device for thermoplastic films
CA 1314800 C · Owner: Bergevin, Kevin · Inventors: Bergevin, Kevin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus is disclosed for sealing and simultaneously cutting through at least two layers of thermoplastic film. The apparatus includes a pair of sealing jaws and means for closing the jaws the, first of said jaws having an electrical impulse sealing element mounted thereon, said heat sealing element being covered with a release sheet the, second of said jaws having a resilient pad mounted thereon, said resilient pad being covered with a release sheet, the improvement wherein there is a heat dispersing foil between the resilient pad and the release sheet which covers said pad. The apparatus may be used on form and fill packaging machines to improve the life of release sheet e.g. a, …
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
- Granted March 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 23, 2010.
- 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.