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Production mannered null core formation of the packaging lamination and that packaging lamination and packing container which include moisture sensitivity gas
Production mannered null core formation of the packaging lamination and that packaging lamination and packing container which include moisture sensitivity gas
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机译:包装层压板以及包含水分敏感性气体的包装层压板和包装容器的生产方式为零芯形成
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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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