Multi-layered oxygen detection system for a solid article

Details Multi-layered oxygen detection system for a solid article Multi-layered oxygen detection system for a solid article

G - Physics

01

N

G01N 31/22 (2006.01) G01N 33/02 (2006.01)

Patent

CA 2449786

The present invention relates to the non-invasive use of a luminescent compound to detect and measure concentrations of oxygen dissolved in solids, particularly polymeric materials present in multi-layered packaging materials. The measurement is made independent of the oxygen concentration of the surrounding atmosphere. The invention is especially useful as a quality assurance check to verify oxygen scavenger activation during the assembly of modified atmosphere and vacuum packages. The method according to the invention is faster and less wasteful than previous methods that rely on measuring oxygen concentration within the headspace of an assembled package. Novel articles, methods, and packages are also disclosed.

La présente invention concerne l'utilisation non invasive d'un composé luminescent pour détecter et mesurer des concentrations d'oxygène dissout dans des solides, notamment dans des matières polymères présentes dans des matériaux d'emballage multicouche. La mesure est effectuée indépendamment de la concentration d'oxygène du milieu environnant. L'invention est notamment utile en tant que contrôle de garantie de la qualité pour vérifier l'activation d'un absorbeur d'oxygène au cours de l'assemblage, d'un milieu modifié et d'emballages sous vide. Le procédé selon l'invention est plus rapide et plus rentable que les procédés antérieurs qui reposent sur la mesure de concentration d'oxygène dans le vide d'un emballage assemblé. L'invention concerne également de nouveaux articles, procédés et emballages.

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