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Production manner of the packaging lamination and that packaging lamination and packing container which include moisture sensitivity gas barrier formation
Production manner of the packaging lamination and that packaging lamination and packing container which include moisture sensitivity gas barrier formation
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机译:具有湿敏性气体阻隔性的包装叠片的生产方式以及包装叠片和包装容器
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PCT No. PCT/SE98/00606 Sec. 371 Date Dec. 2, 1999 Sec. 102(e) Date Dec. 2, 1999 PCT Filed Apr. 1, 1998 PCT Pub. No. WO98/45111 PCT Pub. Date Oct. 15, 1998A sheet- or web-shaped packaging blank (10) of a laminate including a core layer (11) and a layer of a moisture-sensitive gas barrier material (13), in which the gas barrier layer is disposed between two layers (14, 15) of a moisture-resistant material and is omitted in narrow strip shaped regions (16a, 16b) along both longitudinal edges of the packaging blank. The moisture-sensitive gas barrier layer (13) will by such means be encapsulated between moisture-resistant material and well protected against the action of ambient moisture also along the longitudinal, exposed incision edges of the packaging blank. The moisture-sensitive gas barrier material preferably substantially comprises PVOH and is applied preferably by means of coating in the form of an aqueous dispersion and subsequent drying.
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