Method and apparatus for forming a tamper-proof closure for a container
CA 1069476 A · Owner: Owens-Illinois · Inventors: St. Clair, David L.; Mueller, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for forming a heat-shrinkable secondary closure for a container are disclosed wherein filled, lidded containers moved by conveyor means are delivered to a secondary closure formation and application station where a, band of heat-shrinkable thermoplastic adhesive tape is wrapped around each container such that the tacky side of the tape faces the container, with tape overlapping the seam formed between the periphery of the lid and the sidewall of the container. The tape band is severed from the tape supply during wrapping and, heater means located adjacent the container shrinks the tape into compressive engagement with the periphery of the lid and the sidewall of the …
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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- 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.