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Novel flavour/aroma polycarbonate barrier laminates for paperboard cartons and a process of forming said laminates
Novel flavour/aroma polycarbonate barrier laminates for paperboard cartons and a process of forming said laminates
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机译:用于纸板纸箱的新型香料/香气聚碳酸酯阻隔层压板及其形成方法
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摘要
The present invention relates to an improved container for citrus juices and other liquids. The container utilizes a paperboard barrier laminate for the containment of essential oils and flavours. The laminate makes use of a layer of a heat-sealable polycarbonate polymer food contact layer to enhance the barrier properties of the laminate.;Specifically the invention provides a container for liquids containing essential oils and/or flavours, said container constructed from a laminate characterized by comprising:a) a paperboard substrate (36);b) an outer layer of a heat-sealable low density polyethylene polymer (34) coated on said outer surface of said paperboard substrate;c) an inner layer (38) of a low density polyethylene polymer coated on said inner surface of said paperboard substrate; andd) a liquid contact layer comprised of 1) a tie layer (40) or 2) an extrusion coatable adhesive and a heat-sealable polycarbonate polymer layer (42) which can be heat-sealed with the outside layer of low density polyethylene of the laminate on conventional equipment at temperatures ranging from 250°F - 500°F.;Also disclosed is a process of making the laminate.
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