Method of producing printed containers for retortable materials
CA 1317825 C · Owner: Showa Denko Kabushiki Kaisha · Inventors: Takahashi, Takeshi; Hamada, Yoshitsugu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of producing printed containers for retortable material comprising subjecting the outer surfaces of sheets or container of polyolefin to a flame treatment to produce a wet index of 45 dyne/cm or higher and then printing the outer surfaces. The polyolefin used comprises an olefin polymer compound comprising a mixture of (a) 100 parts by weight of a crystalline propylene polymer having a melt flow index of 0.1 - 100 g/10min and (b) 3.0 - 30 parts by weight of an ethylene polymer having a density of 0.925 - 0.975 g/cc and a melt index of 0.1 - 20 g/10min; or an olefin polymer compound comprising a mixture of (a) 100 parts by weight of a crystalline propylene polymer having a melt flow …
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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 18, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 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.