Multilayer container for enhanced gas barrier properties

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 27/08 (2006.01) B32B 27/18 (2006.01) B65D 65/40 (2006.01) B65D 81/24 (2006.01)

Patent

CA 2662386

A multilayer container having enhanced gas barrier properties comprises at least two outer layers comprising a polymer matrix, and at least one barrier layer disposed between the at least two outer layers. The at least one barrier layer comprises a first polymer composition comprising a polymer matrix and a low molecular weight additive. In a particular embodiment, the low molecular weight additive comprises a purine derivative, such as caffeine, and is present in the multilayer container in an amount in the range of about 0.2 to about 10 weight percent of the container.

La présente invention concerne un récipient multicouche présentant des propriétés de barrière contre les gaz améliorées. Ce récipient présente au moins deux couches externes qui comprennent une matrice polymère, ainsi qu'au moins une couche de barrière qui est placée entre lesdites couches externes. Cette couche de barrière comprend une première composition polymère qui renferme une matrice polymère et un additif à bas poids moléculaire. Dans un mode de réalisation particulier, cet additif à bas poids moléculaire comprend un dérivé de purine, tel que la caféine, et sa teneur dans le récipient multicouche s'élève entre environ 0,2 et environ 10 % en poids du récipient.

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