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    • 1. 发明授权
    • Laminated base film for photographic film
    • 摄影胶片层压基膜
    • US5723208A
    • 1998-03-03
    • US495616
    • 1995-08-03
    • Kenji SuzukiTsuyoshi NagaiKoji Furuya
    • Kenji SuzukiTsuyoshi NagaiKoji Furuya
    • G03C1/795B32B27/36B32B27/06G03C1/81
    • G03C1/7954Y10S428/91Y10T428/24967Y10T428/24975Y10T428/25Y10T428/269Y10T428/31786
    • A laminated base film for a photographic film, (A) which is a laminated film comprising a first layer formed substantially of polyethylene-2,6-naphthalenedicarboxylate and a second layer formed substantially of a polymer composition containing a 2,6-naphthalenedicarboxylate unit ##STR1## and an ethylene unit (--CH.sub.2 CH.sub.2 --) in a total amount of at least 50% by weight, and (B) which has a haze value of 3.0% or less, (C) in which the first layer has a plane orientation coefficient (NS.sub.1) of 0.270 or less, and (D) in which the first layer thickness/second layer thickness ratio is in the range of from 3/7 to 7/3 wherein the laminated film has a curl degree f.sub.2 in the longitudinal direction of 0 to 70%. This base film is provided with a proper curling which can be cured by the contraction of a photosensitive emulsion and has various suitable properties as a base film for a photographic film, such as transparency, lubricity, and the like.
    • PCT No.PCT / JP94 / 00180 Sec。 371日期:1995年8月3日 102(e)日期1995年8月3日PCT 1994年2月7日PCT PCT。 WO95 / 16223 PCT出版物 日期:1995年6月15日用于照相胶片的层压基膜(A),其为包含基本上由聚2,6-萘二甲酸乙二醇酯形成的第一层的层压膜和基本上由含有2, 总重量为至少50重量%的6-萘二羧酸酯单元(IMAGE)和乙烯单元(-CH 2 CH 2 - ),和雾度值为3.0%以下的(B),(C) 层的面取向系数(NS1)为0.270以下,(D)第一层厚/第二层厚度比在3/7〜7/3的范围内,其中层叠膜的卷曲度 f2的长度方向为0〜70%。 该基膜具有适当的卷曲,其可以通过感光乳剂的收缩而固化,并且具有各种合适的性质,作为照相胶片的基膜,例如透明性,润滑性等。