Bi-axially oriented and heat-set multilayer thermoplastic film for packaging
CA 2403073 A1 · Owner: Forloni, Roberto · Inventors: Di Cesare, Gregorio; Forloni, Roberto; Longo, Eugenio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-layer, thermoplastic film bi-axially oriented at a stretching ratio >= about 3.0:1 in the machine direction and at a stretching ratio >= about 6.0:1 in the transverse direction, which film comprises a layer a) comprising at least 50 wt. % of a crystalline or partially crystalline co-polyamide characterized by a Tg <= 100 ~C, and at least one outer heat-sealing layer b) comprising a polyolefin, said film being further characterized in that it has a % free shrink at 100 ~C <= 3 in each direction.
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
- Filed February 27, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 27, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 2023.
- 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.