POUCHES MADE FROM BLENDS OF ETHYLENE-.alpha.-OLEFIN COPOLYMERS AND ETHYLENE-VINYL ACETATE COPOLYMERS
CA 1211083 A · Owner: Du Pont Canada Inc. · Inventors: Mollison, Alistair N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pouches containing a flowable material e.g. milk ice cream mix are disclosed. The sealant film from which the pouch is made, is of a blend of a linear ethylene-C4-C10 .alpha.-olefin copolymer and an ethylene-vinyl acetate copolymer. The ethylene-C4-C10 .alpha.-olefin has a density of 0.916 to 0.930 g/cm3 and a melt index of from 0.3 to 2.0 dg/min. The ethylene-vinyl acetate copolymer has a weight ratio of ethylene vinyl acetate from 2.2 to 24 and a melt index of from 0.2 to 10 dg/min. The blend has a ratio of linear ethylene-C4-C10 .alpha.-olefin copolymer to ethylene vinyl acetate copolymer of from 1.2:1 to 9:1.
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 September 9, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 9, 2003.
- 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.