Multilayer sheet and container produced therefrom
CA 1304018 C · Owner: Suzuki, Takanori · Inventors: Shinohara, Takeshi; Suzuki, Takanori; Takata, Yukio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The present invention is directd to a multilayer sheet to be thermoformed into a multilayer container and then heat sealed with a lid member to produce a packaging container, which comprises at least a peelable surface layer and a layer contacting the peelable surface layer the interlaminar peeling strength between said two layers being adjusted to not more than 1.5 kg/15 mm so that the opening of said packaging container begins with the delamimination between said two layers. The invention is further directed to a multilayer container produced from the multilayer sheet.
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 June 23, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 2009.
- 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.