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    • 80. 发明公开
    • PACKAGING LAYERED MATERIAL
    • GESCHICHTETES VERPACKUNGSMATERIAL
    • EP1920919A1
    • 2008-05-14
    • EP06796929.5
    • 2006-08-29
    • Tetra Laval Holdings & Finance SA
    • FRISK, Peter
    • B32B27/28B32B25/08B32B27/32B65D65/40
    • B32B27/08B32B27/30Y10T428/31928
    • [PROBLEMS] To provide a laminated packaging material having a simplified lamination structure for a packaging material having the gas blocking capability, enhancing an inter-layer mechanical strength between a barrier layer and an adjoining layer, and capable of preserving the sealing strength of a sealant layer which is the innermost layer.
      [Solution] The laminated packaging material has an outer layer made from thermoplastic resin, a paper-made base layer, an EVOH gas barrier layer, and a sealant layer, in which the layer adjoining the gas barrier layer is made from a blend polymer in which 92 to 98 weight % of linear low density polyethylene and 2 to 8 weight % of thermoplastic elastomer are blended, and the thermoplastic elastomer has the affinity with a hydroxyl group and/or a polarized group in the EVOH layer.
    • 为了提供具有气体阻隔能力的包装材料的具有简化的层压结构的层叠包装材料,提高了阻隔层与邻接层之间的层间机械强度,并且能够保持密封剂的密封强度 层是最内层。 [解决方案]层压包装材料具有由热塑性树脂制成的外层,纸制基底层,EVOH阻气层和密封剂层,其中与阻气层相邻的层由共混聚合物制成 共混有92〜98重量%的线型低密度聚乙烯和2〜8重量%的热塑性弹性体,热塑性弹性体与EVOH层中的羟基和/或极化基团具有亲和性。