Barrier laminates for the retention of essential oils, vitamins

Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source

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Details

229 31, 229176, 426106, 426127, 426398, 428481, 428483, 493 96, B65D 556, B65D 8500

Patent

active

047538325

ABSTRACT:
A barrier laminate for making containers and cartons that substantially resist the absorption of essential oils and flavoring components, e.g. peel oil, as well as the oxidation of 1-ascorbic acid (vitamin C) normally found in various beverages such as fruit and citrus juices. In a particularly preferred embodiment, the present laminate comprises a substrate material having a thin layer of PET-G (glycol-modified polyethylene terephthalate) bonded to the substrate's inner and outer surfaces, said PET-G layer becoming the beverage-contacting surface of containers made from such a laminate. In other particularly preferred embodiments, the barrier laminate also includes one or more intermediate layers of oxygen barrier materials between the laminate's substrate and beverage-contacting layer of PET-G. Also disclosed are methods of making such barrier laminates and containers therefrom.

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