Multilayer polymeric/inorganic oxide structure for enhanced...

Details Multilayer polymeric/inorganic oxide structure for enhanced... Multilayer polymeric/inorganic oxide structure for enhanced...

C - Chemistry, Metallurgy

08

J

C08J 7/04 (2006.01) B32B 15/08 (2006.01) B32B 27/36 (2006.01) B65D 1/02 (2006.01) B65D 65/40 (2006.01) B65D 75/26 (2006.01) B65D 85/72 (2006.01)

Patent

CA 2419370

The coated multilayer structure comprising a polymeric base layer, an inorganic oxide gas barrier layer on a surface on the polymeric base layer, and a top coat on the inorganic oxide gas barrier layer, the top coat comprising a soluble compound capable of reducing the permeability of the multilayer structure to gas or vapor. A method for enchancing the gas or vapor barrier properties of a multilayer polymeric/inorganic oxide structure is also disclosed. According to one embodiment, SiOx coated polyethylene terephthalate containers are coated with a gas or vapor barrier enhancing top coat.

La structure multicouche enduite de l'invention comprend une couche de base polymérique, une couche d'oxyde inorganique perméable aux gaz disposée sur une surface de la couche de base polymérique, et une couche de finition disposée sur la couche d'oxyde inorganique perméable aux gaz, la couche de finition comprenant un composé soluble pouvant diminuer la perméabilité de la structure multicouche aux gaz ou à la vapeur. L'invention concerne un procédé qui améliore les propriétés de perméabilité aux gaz ou à la vapeur d'une structure d'oxyde polymérique/inorganique multicouche. Selon une forme de réalisation, des contenants en polyéthylène téréphtalate enduits de SiOx sont revêtus d'une couche de finition améliorant la perméabilité aux gaz ou à la vapeur.

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