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Summary:A pouch-like package for long-term storage of a highly acidic condiment is fabricated from a flexible sheet material having a light-blocking sheet, such as aluminum foil, coextruded between a printable layer, which may be a polymeric material such as PET, and a barrier layer, which may be a polymeric material such as PET coated on one side by a thin layer of aluminum oxide. Suitable adhesives may be used between the printable layer, the light-blocking sheet, and the barrier layer. If desired, a sealant such as acrylonitrile may be applied to the surface of the barrier layer.
Bibliography:Application Number: US20100909134