Tubular preform for packaging containers
CA 1136097 A · Owner: Owens-Illinois, Inc. · Inventors: Amberg, Stephen W.; Heier, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tubular preform is provided for assemblying bottles or other containers into a package. The bottles for an integral package are arranged in a group and the tubular preform is placed around the group. The tubular preform is formed from a lengthy sheet of flexible heat-shrinkable thermoplastic material which is a composite foam and film laminate with the preform having a thermal fusion seal extending in an axial direction. The preform is flat-folded with a pair of axial pleated folds in diametrically opposite sides and then double-folded centrally for use in multiple unit packaging of like containers. The preform has a primary orientation in a circumferential direction and a secondary …
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 November 23, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 1999.
- 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.