Multilayer in-mold film
CA 2492791 A1 · Owner: Avery Dennison Corporation · Inventors: Kovalchuk, John; Mientus, Bernard S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a multilayered film for use as in-mold label comprising: a core layer having a first surface and a second surface the core , layer being comprised of a polymeric material and particulate solids dispersed in the polymeric material; and a first skin layer overlying the first surface of the core layer; the film being formed by co-extruding the core layer and first skin layer to form the multilayered film hot-stretching the film at a , temperature above the expected service temperature of the label to provide the film with a machine direction orientation the density of the film being , reduced by about 5% to about 25% during hot-stretching and annealing the film , …
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 June 2, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 2025.
- 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.