Multilayer coating for paper based substrate

D - Textiles – Paper – 21 – H

Patent

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Details

D21H 19/82 (2006.01) B32B 29/08 (2006.01) D21H 23/48 (2006.01)

Patent

CA 2739987

Embodiments include a coated paper or paperboard with a multilayer coating and methods of forming a coated paper or paperboard with the multilayer coating. The multilayer coating includes a first water vapor barrier layer, a biopolymer barrier layer, and a second water vapor barrier layer and provides the paperboard with improved oil and grease resistant properties, oxygen barrier properties, and water vapor barrier properties.

Selon l'invention, des modes de réalisation comprennent un papier couché ou un carton enduit avec un revêtement multicouche et des procédés de formation d'un papier couché ou d'un carton enduit avec ledit revêtement. Le revêtement multicouche comprend une première couche de barrière à la vapeur d'eau, une couche de barrière de biopolymère, et une seconde couche de barrière à la vapeur d'eau, et communique au carton des propriétés améliorées de résistance à l'huile et à la graisse, des propriétés de barrière à l'oxygène améliorées et des propriétés de barrière à la vapeur d'eau améliorées.

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