Biodegradable paper-based cup or package and production method

Details Biodegradable paper-based cup or package and production method Biodegradable paper-based cup or package and production method

B - Operations, Transporting

32

B

B32B 27/00 (2006.01) B32B 27/06 (2006.01) B32B 27/08 (2006.01) B32B 27/10 (2006.01) B32B 27/18 (2006.01) B32B 27/36 (2006.01) B32B 37/15 (2006.01) B32B 37/16 (2006.01) B32B 38/00 (2006.01) C08G 63/02 (2006.01) C08G 63/12 (2006.01) C08G 63/123 (2006.01) C08G 63/127 (2006.01) C08G 63/137 (2006.01) C08G 63/16 (2006.01) C08G 63/18 (2006.01) C08G 63/181 (2006.01) C08G 63/183 (2006.01) C08G 63/199 (2006.01)

Patent

CA 2583529

There is disclosed a biodegradable laminate (10) suitable for use in shaped paper-based articles such as containers for liquid or solid, hot or cool, food products, comprising a paper-based substrate (12) having first and second copolyester layers (14, 16) deposited onto at least one surface of the substrate (12), in the substantial absence of intervening polymer layers between the substrate surface and the copolyesters (14, 16) deposited on the substrate surface. A biodegradable shaped article formed from the laminate (10) and a method for forming a biodegradable laminate are also disclosed.

La présente invention concerne un laminé biodégradable (10) conçu pour être utilisé dans des articles en papier façonnés tels que des contenants pour des produits alimentaires liquides ou solides, chauds ou froids. Le laminé décrit dans cette invention comprend un substrat en papier (12) présentant une première couche de copolyester (14) et une seconde couche de copolyester (16) déposées sur au moins une surface du substrat (12), en l'absence presque totale de couches polymères intercalaires entre les couches de copolyester (14, 16) déposées sur la surface du substrat. Cette invention concerne également un article façonné biodégradable formé à partir du laminé (10) susmentionné, ainsi qu'un procédé permettant de former un laminé biodégradable.

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