Composition suitable for single-sided, low-noise, stretch cling film and films made therefrom
CA 2563043 C · Owner: Lakeman, Pascal E.R.E.J. · Inventors: Mayer, Andreas; Parkinson, Shaun; Lakeman, Pascal E.R.E.J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to a composition suitable for use in a single-sided stretch cling film, the composition having from 0.1 to 20 percent by weight of a propylene-based copolymer having substantially isotactic propylene sequences, and having from 80 to 99 percent by weight of an ethylene-based copolymer having a density of at least 0.905 g/cc wherein a film made from , the composition exhibits cling layer to release layer cling of at least 70 grams force per inch as measured by ASTM D-5458-95 noise levels of less than , 87 dB during unwinding operations and has a modulus of at least 3 MPA as determined by ASTM D-882.
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 April 19, 2005 and granted April 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.