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33 条记录 (耗时 0.013 秒)

    Magnetic tape
    2.
    发明公开
    Magnetic tape 失效
    磁带

    公开(公告)号：EP0500018A3

    公开(公告)日：1993-05-19

    申请号：EP92102612.6

    申请日：1992-02-17

    申请人： TEIJIN LIMITED

    发明人： Etchu, Masami ,  Hamano, Hisashi ,  Hosoi, Masahiro ,  Saeki, Yasuhiro

    IPC分类号： G11B5/704

    CPC分类号： G11B5/7305 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/31786

    摘要： A magnetic tape for audio cassettes wherein a magnetic layer is provided on base film characterized in that the base film is biaxially oriented polyethylene-2,6-naphthalate film having a Young's modulus in the longitudinal direction of 850 Kg/mm² or more, a Young's modulu in the transverse direction of 550 Kg/mm² or more a surface roughness Ra in the range of 0.015 to 0.040 µm, and a thermal shrinkage rate in the longitudinal direction of 0.3 % or less in case where it was held at a temperature of 100°C for 1 hour. A magnetic tape for audio cassettes is provided which is capable of long-time recording and wherein deterioration of magnetic characteristics does not easily occur in use, storage and the like at a high temperature, for example in the open at summer seasons or in cars, compared to conventional ones.

    Oriented polyester film
    6.
    发明公开
    Oriented polyester film 失效
    Orientierte Polyesterfolie。

    公开(公告)号：EP0561596A2

    公开(公告)日：1993-09-22

    申请号：EP93301954.9

    申请日：1993-03-15

    申请人： TEIJIN LIMITED

    发明人： Hamano, Hisashi ,  Hosoi, Masahiro ,  Nishiyama, Masanori ,  Saeki, Yasuhiro

    IPC分类号： C08J5/18 ,  C08L67/02 ,  H01B3/42

    CPC分类号： C08J5/18 ,  C08G63/185 ,  C08G63/672 ,  C08J2367/02 ,  H01B3/422 ,  Y10T428/31786

    摘要： An oriented polyester film (A) which comprises modified polyethylene-2,6-naphthalenedicarboxylate containing a 4,4'-diphenyldicarboxylic acid component and having a heat of crystallization of 16 to 25.5 Joule/g, and (B) which is biaxially oriented; and an oriented polyester film (A') which comprises modified polyethylene-2,6-naphthalenedicarboxylate containing of a glycol component derived from a compound represented by the following formula,

       wherein each of n and m is independently a positive number of 1 to 9 as an average, provided that m + n equals 2 to 9 as an average.
    and having a heat of crystallization of 6 to 20 Joule/g, and (B) which is biaxially oriented. These films are useful as a base film for a magnetic recording tape or as an electric insulation film.

    摘要翻译： 一种取代聚酯膜（A），其包含含有4,4'-二苯基二羧酸组分的改性聚乙烯-2,6-萘二甲酸酯，结晶热为16-25.5焦耳/克，（B）为双轴取向; 和包含衍生自下式表示的化合物的二醇成分的改性聚乙烯-2,6-萘二甲酸酯的取向聚酯膜（A'），其中n和m各自独立地为1， 至9为平均值，条件是m + n等于2至9作为平均值。 并且结晶热为6〜20焦耳/克，（B）为双轴取向。 这些膜可用作磁记录带或电绝缘膜的基膜。

    Biaxially oriented film of polyethylene-2,6-naphthalate
    8.
    发明公开
    Biaxially oriented film of polyethylene-2,6-naphthalate 失效
    双轴取向聚乙烯-2,6-萘 - 薄膜。

    公开(公告)号：EP0381213A2

    公开(公告)日：1990-08-08

    申请号：EP90102008.1

    申请日：1990-02-01

    申请人： TEIJIN LIMITED

    发明人： Katoh, Hideo ,  Hamano, Hisashi ,  Hosoi, Masahiro ,  Ogawa, Tatsuya

    IPC分类号： G11B5/704

    CPC分类号： G11B5/7305 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/31786

    摘要： A biaxially oriented film of polyethylene-2,6-naphthalate having a Young's modulus of at least 650 kg/mm 2 in a given direction on the film plane and a direction crossing it at right angles, the difference between the Young's moduli in the two directions being at most 200 kg/mm 2 , the difference between the thermal shrinkages in the two directions being 0 to 0.1 %.

    摘要翻译： 在膜平面上的给定方向上的杨氏模量为至少650kg / mm 2的聚2,6-萘二甲酸乙二醇酯的双轴取向膜和与其成直角交叉的方向上的杨氏模量之间的差异 两个方向为200kg / mm 2以下，两个方向的热收缩率的差为0〜0.1％。