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    • 1. 发明授权
    • Coextruded, retortable multilayer film
    • 共挤出,可蒸煮多层膜
    • US06599639B2
    • 2003-07-29
    • US09809987
    • 2001-03-16
    • Richard M. DayritSteven T. CalvertStephen J. SchwarzDaniel L. McKamyBrian RiversBobby Ayers
    • Richard M. DayritSteven T. CalvertStephen J. SchwarzDaniel L. McKamyBrian RiversBobby Ayers
    • B32B2734
    • B32B27/32A23L3/02A23L3/10B32B27/30B32B27/34Y10S428/91Y10T428/31743Y10T428/31746Y10T428/3175Y10T428/31757Y10T428/31913Y10T428/31928
    • A coextruded, retortable film includes a core layer having an ethylene/vinyl alcohol copolymer; two intermediate layers including a polyamide; two adhesive layers including a polymeric adhesive; and two outer layers including low density polyethylene, medium density polyethylene, high density polyethylene, ethylene/alpha olefin copolymer, propylene homopolymer, and/or propylene/alpha olefin copolymer. A method of packaging a product using this film, and a package, are disclosed. A retortable film includes a first layer including low density polyethylene, medium density polyethylene, high density polyethylene, ethylene/alpha olefin copolymer, propylene homopolymer, and/or propylene/alpha olefin copolymer; a second layer including a polymeric adhesive; a third layer including an ethylene/vinyl alcohol copolymer; a fourth layer including a polymeric adhesive; a fifth layer including a polyamide; a sixth layer including a polymeric adhesive; and a seventh layer including low density polyethylene, medium density polyethylene, high density polyethylene, ethylene/alpha olefin copolymer, propylene homopolymer, and/or propylene/alpha olefin copolymer.
    • 共挤出的可蒸煮膜包括具有乙烯/乙烯醇共聚物的芯层; 两个中间层包括聚酰胺; 两个粘合剂层包括聚合物粘合剂; 和包括低密度聚乙烯,中密度聚乙烯,高密度聚乙烯,乙烯/α-烯烃共聚物,丙烯均聚物和/或丙烯/α-烯烃共聚物的两个外层。 公开了使用该膜包装产品的方法和包装。 可蒸煮膜包括第一层,包括低密度聚乙烯,中密度聚乙烯,高密度聚乙烯,乙烯/α-烯烃共聚物,丙烯均聚物和/或丙烯/α-烯烃共聚物; 第二层,包括聚合物粘合剂; 第三层包括乙烯/乙烯醇共聚物; 包括聚合物粘合剂的第四层; 包括聚酰胺的第五层; 包括聚合物粘合剂的第六层; 和包含低密度聚乙烯,中密度聚乙烯,高密度聚乙烯,乙烯/α-烯烃共聚物,丙烯均聚物和/或丙烯/α-烯烃共聚物的第七层。