B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/06 (2006.01) B29C 47/06 (2006.01) B29C 55/16 (2006.01) B32B 27/36 (2006.01) B65D 65/46 (2006.01) C08J 5/18 (2006.01) C08L 3/02 (2006.01) C08L 67/02 (2006.01)
Patent
CA 2543306
The invention relates to a biodegradable multi-layer film which has a regulatable barrier effect against oxygen, nitrogen, carbon dioxide and steam and is used in the field of packaging, especially for food, or in agriculture. The invention also relates to a method for producing said film. The inventive multi-layer film can be produced by co-extrusion and is formed by at least one starch blend layer consisting of a modified thermoplastic starch blend containing between 1 % and 10 % of water, and a polyester layer consisting of a biodegradable polyester.
L'invention concerne une pellicule multicouche biodégradable présentant un effet barrière réglable contre l'oxygène, l'azote, le dioxyde de carbone et la vapeur d'eau, destinée à être employée dans le domaine du conditionnement, notamment dans le domaine alimentaire ou agricole, ainsi qu'un procédé de fabrication de ladite pellicule. L'invention concerne également une pellicule multicouche pouvant être obtenue par coextrusion, composée d'au moins une couche constituée d'un mélange d'amidon thermoplastique modifié, contenant 1 à 10 % d'eau, et d'une couche constituée d'un polyester biodégradable.
Berger Werner
de Jong Frits Pieter Eduard Anton
Biop Biopolymer Technologies Ag
Kirby Eades Gale Baker
LandOfFree
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