Sealing method and apparatus for high capacity aseptic form, fill and seal machines
CA 1283844 C · Owner: International Paper Company · Inventors: Hufford, Marvin P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved form fill, and seal machine for, making aseptic sealing packages incorporating a plurality of sealing mechanisms mounted on a continuously advancing structure in a form, fill and seal, machine. Induction heating is used to longitudinally seal the edges of the web together to form a tube and to transversely seal the tube. A circuit means is used for controlling the electromagnetic energy oource output to form longitudinal seals and transverse seals. The plurality of sealing mechanisms include a sealing jaw and an anvil jaw hinged together and adapted to pinch the tube therebetween at predetermined locations as the sealing mechanisms and web tubing advance. Each sealing jaw contains …
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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 May 7, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2008.
- 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.