Extended long life juice carton structure and method of...

B - Operations – Transporting – 32 – B

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B32B 27/06 (2006.01) B32B 27/10 (2006.01) B32B 27/32 (2006.01) B32B 27/34 (2006.01) B65D 65/40 (2006.01) D21H 19/84 (2006.01)

Patent

CA 2233578

An extended long life juice carton structure is provided which has low oxygen permeability, is leak free, has minimal characteristics without sacrificing the ability to skive the side seam or use hydrogen peroxide as a sterilizing substance. The container structure has a polyamide polymer layer (14), a layer of ehtylene vinyl alcohol copolymer (24) with an ehtylene comonomer content of 27-32 mole %, and a thin matte side layer polyolefin polymer (28).

L'invention concerne une boîte de jus de fruit en carton, d'une durée utile prolongée, peu perméable à l'oxygène, étanche et possédant un certain nombre de propriétés, ce qui laisse la possibilité d'amincir la soudure latérale ou celle d'utiliser du peroxyde d'hydrogène comme agent stérilisant. Ladite structure de récipient possède une couche de polymère de polyamide (14), une couche de copolymère d'éthylène-alcool vinylique (24) avec une teneur en comonomère d'éthylène de 27 à 32 moles pour cent, et une couche fine de polymère de polyoléfine (28) sur la face interne.

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