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    • 1. 发明授权
    • Multi-layer film
    • 多层胶片
    • US08652618B2
    • 2014-02-18
    • US12461540
    • 2009-08-14
    • Yasushi Seta
    • Yasushi Seta
    • B32B7/02B32B15/08B32B27/08H01M2/08
    • B32B27/32B32B15/08B32B15/20B32B27/34B32B27/36B32B2307/518B32B2307/704B32B2439/70B32B2605/08Y10T156/10Y10T428/24942Y10T428/31681Y10T428/31692Y10T428/31765Y10T428/31913
    • Purpose: The present invention provides a multi-layer film comprising a polyolefin film, an aluminum foil and a polyamide layer which are laminated sequentially, wherein the aluminum foil is adhered directly to the polyolefin film without any anchor coat agent or adhesive and the multi-layer film is excellent in adhesion strength between the polyolefin film and the aluminum foil and in low-temperature resistance.The multi-layer film according to the present invention comprises an aluminum layer (B) subjected to chromium-free chemical conversion treatment, a polyolefin resin film (A) on one side of the layer (B) and a polyamide layer (C) on the other side of the layer (B), wherein the film (A) comprises a layer (A-1) composed of an acid-modified polyethylene resin (α) and a layer (A-2) composed of a crystalline polyethylene resin (β), a temperature at which the acid-modified polyethylene resin (α) has a crystallinity of 60%, Tmα60, is lower than a temperature at which the crystalline polyethylene resin (β) has a crystallinity of 60%, Tmβ60, and the layer (B) is present directly on the layer (A-1).
    • 目的:本发明提供一种多层膜,其包括依次层叠的聚烯烃膜,铝箔和聚酰胺层,其中铝箔直接粘附到聚烯烃膜上而没有任何锚固剂或粘合剂, 层膜在聚烯烃膜和铝箔之间的粘合强度优异且耐低温性优异。 根据本发明的多层膜包括经无铬化学转化处理的铝层(B),层(B)一侧的聚烯烃树脂膜(A)和聚酰胺层(C)上 层(B)的另一侧,其中膜(A)包含由酸改性聚乙烯树脂(α)构成的层(A-1)和由结晶聚乙烯树脂(A-2)构成的层(A-2) β),酸改性聚乙烯树脂(α)的结晶度为60%的温度Tmalpha60低于结晶聚乙烯树脂(β)的结晶度为60%的温度,Tmbeta60,和 层(B)直接存在于层(A-1)上。