公开(公告)号：US20010008694A1

公开(公告)日：2001-07-19

申请号：US09767113

申请日：2001-01-21

申请人： AlliedSignal Inc.

发明人： Mingliang Lawrence Tsai ,  Yash Pal Khanna ,  Joseph Edgar Mackey

IPC分类号： B32B027/30 ,  B32B027/32 ,  B29C055/00

CPC分类号： B32B27/08 ,  B29C47/00 ,  B29C47/0021 ,  B29C55/023 ,  B29K2023/00 ,  B29K2027/12 ,  B29K2995/005 ,  B29L2009/00 ,  B32B7/12 ,  B32B27/32 ,  B32B37/12 ,  B32B37/153 ,  B32B2038/0028 ,  B32B2307/516 ,  B32B2307/518 ,  B32B2309/105 ,  B32B2323/00 ,  B32B2327/12 ,  Y10S428/91 ,  Y10T428/25 ,  Y10T428/3154 ,  Y10T428/31544 ,  Y10T428/31909 ,  Y10T428/31913 ,  Y10T428/31928 ,  Y10T428/31935 ,  Y10T428/31938

摘要： The present invention provides highly oriented multilayer films. They are produced by coextruding or laminating films having at least one layer of a fluoropolymer, at least one layer of a polyolefin homopolymer or copolymer and an intermediate adhesive layer of a polyolefin having at least one functional moiety of an unsaturated carboxylic acid or anhydride thereof. With this structure the polyolefin layer allows the fluoropolymer layer to be stretched up to ten times its original length. Such a high orientation ratio for the fluoropolymer film increases the mechanical strength, toughness, and water vapor barrier properties of the film while using a thinner gauge fluoropolymer film. Coextrusion processing can be done at higher temperatures, i.e. in the range of from at about 280null C. to about 400null C. These temperatures allow films to be produced in the absence of polymer degradation and film melt fracture.

摘要翻译： 本发明提供高取向多层膜。 它们通过共挤出或层压具有至少一层含氟聚合物层，至少一层聚烯烃均聚物或共聚物的膜和具有至少一个不饱和羧酸或其酸酐官能部分的聚烯烃的中间粘合剂层来制备。 利用该结构，聚烯烃层允许氟聚合物层被拉伸至其原始长度的十倍。 含氟聚合物膜的这种高取向比增加了薄膜的机械强度，韧性和水蒸气阻隔性能，同时使用较薄的含氟聚合物膜。 共挤出加工可以在更高的温度下进行，即在约280℃至约400℃的范围内。这些温度允许在不存在聚合物降解和薄膜熔融断裂的情况下生产膜。