BIO-BASED IN-LINE HIGH BARRIER METALIZED FILM AND PROCESS FOR ITS PRODUCTION

• Main Authors: MOUNT, ELDRIDGE, M, RODGERS, BRAD, DEWAYNE, LAVERDURE, KENNETH, SCOTT, KNOERZER, ANTHONY, ROBERT
• Format: Patent
• Language: English; French
• Published: 09.09.2011
• Subjects: GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING

Bio-based high barrier metalized film such as PLA or PHA has an adhesion layer coated or co-extruded with the bio-based film and a metal oxide is disposed on the adhesion layer. The adhesion layer can be a co-extruded polyethylene terephthalate, nylon, polygly colic acid, or ethylene vinyl alcohol. The adhesion layer can have a coating of EVOH, a nylon/EVOH blend, PVOH, PVOH/EAA mixtures, or a primer. L'invention concerne un film métallisé haute barrière biosourcé constitué par exemple de PLA ou de PHA et muni d'une couche d'adhésion appliquée sur le film biosourcé ou coextrudée avec celui-ci et d'un oxyde métallique situé sur la couche d'adhésion. La couche d'adhésion peut être constituée de téréphtalate de polyéthylène, de nylon, d'acide polyglycolique ou d'éthylène-alcool vinylique coextrudé. La couche d'adhésion peut comprendre un revêtement composé d'EVOH, d'un mélange nylon/EVOH, de PVOH, de mélanges PVOH/EAA ou d'un apprêt.