Heat sealing machine and process for heating plastic film edges
CA 1215620 A · Owner: Hollinger, William K. Jr. · Inventors: Hollinger, William K. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat sealing machine for sealing polyester sheets is disclosed wherein edges of two polyester sheets are heat sealed together by being exposed to a nickel-chrome heating ribbon. The machine includes movable clamping bars for clamping polyester sheets to a work surface in a position to be heat sealed and also, includes a movable shield for shielding the freshly sealed plastic sheet from a heating element as well as, for providing an alignment guide for the next plastic sheet to be heat sealed on the machine which cooperates, with the clamping bar.
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 December 23, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 2003.
- 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.