Method for producing laminated material
CA 1248417 A · Owner: Nippon Petrochemicals Co. Ltd. · Inventors: Saitoh, Hachiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for producing a laminated material giving higher adhesive strength of laminated layers and the thermal deterioration of polyolefin and the undesirable release of the active agent during the lamination process are avoided. The method is characterized in that the substrate sheet is previously laminated with a polyolefin layer and a molten, web of polyolefin film is laminated to the side of said polyolefin layer of the substrate sheet under pressure at a relatively lower temperature.
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 January 10, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 10, 2006.
- 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.