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    Economical oxygen barrier structures utilizing EVOH/polyolefin blends
    2.
    发明申请
    Economical oxygen barrier structures utilizing EVOH/polyolefin blends 审中-公开
    使用EVOH /聚烯烃共混物的经济氧阻隔结构

    公开(公告)号：US20070148484A1

    公开(公告)日：2007-06-28

    申请号：US11544008

    申请日：2006-10-05

    申请人： Eric Baer ,  P. Hiltner ,  Charles Gibbons ,  Gregory Castle ,  Andrew Sullivan ,  Irving Sand

    发明人： Eric Baer ,  P. Hiltner ,  Charles Gibbons ,  Gregory Castle ,  Andrew Sullivan ,  Irving Sand

    IPC分类号： B32B27/10

    CPC分类号： B32B27/10 ,  B32B7/12 ,  B32B27/08 ,  B32B27/306 ,  B32B27/32 ,  B32B2323/046 ,  B32B2439/70 ,  Y10T428/1303 ,  Y10T428/1307 ,  Y10T428/31895 ,  Y10T428/31899 ,  Y10T428/31902 ,  Y10T428/31906

    摘要： A laminate structure for both packaging and non-packaging applications, including a five layer coextrusion composite containing an EVOH/polyolefin composite barrier layer coated or applied to a paper or paperboard substrate. The laminated structure may contain a layer of linear low density polyethylene or other layers, as needed for the application. The EVOH/polyolefin blend layer is preferably a blend of an ethylene vinyl alcohol copolymer having 44% ethylene moiety and a low density polyethylene polymer. The blend barrier, which is part of a five layer coextrusion composite layer provides improved oxygen and moisture barrier characteristics to a package, prepared from such a laminated structure, as well as improved rigidity and heat resistance, thereby providing longer shelf life and excellent flavor retention to the stored contents as well as improved dimensional stability to the cartons, package or containers, at a reduced cost.

    摘要翻译： 一种用于包装和非包装应用的层压结构，包括五层共挤复合材料，其包含涂覆或施加到纸或纸板基材上的EVOH /聚烯烃复合阻挡层。 层压结构可以包含一层线性低密度聚乙烯或其它层，如应用所需。 EVOH /聚烯烃共混物层优选是具有44％乙烯部分的乙烯乙烯醇共聚物和低密度聚乙烯聚合物的共混物。 作为五层共挤复合材料层的一部分的共混物屏障为由这种层压结构制备的包装提供改进的氧气和水分阻隔特性，以及改善的刚性和耐热性，从而提供更长的保质期和优异的保鲜性 以及以较低的成本改进纸箱，包装或容器的尺寸稳定性。