公开(公告)号：US4952449A

公开(公告)日：1990-08-28

申请号：US254320

申请日：1988-10-05

申请人： Iwao Okazaki ,  Koichi Abe ,  Shoji Nakajima ,  Kiyohiko Ito ,  Satoru Nishino ,  Hidehito Minamizawa

发明人： Iwao Okazaki ,  Koichi Abe ,  Shoji Nakajima ,  Kiyohiko Ito ,  Satoru Nishino ,  Hidehito Minamizawa

IPC分类号： B29C55/00 ,  C08J5/18 ,  G11B5/73

CPC分类号： C08J5/18 ,  B29C55/005 ,  G11B5/7305 ,  B29K2067/00 ,  B29K2105/16 ,  B29K2995/0072 ,  B29L2017/008 ,  C08J2367/02 ,  Y10T428/24372 ,  Y10T428/24405 ,  Y10T428/24413 ,  Y10T428/24421 ,  Y10T428/25 ,  Y10T428/31786

摘要： A biaxially oriented polyester film suited as a substrate for magnetic recording media. The film comprises a polyester and inert particles and has at least one surface with protrusions formed by the existence of the inert particles. The surface has a parameter of surface topography .sqroot.(.beta./.sigma.) of 0.1 to 0.7. The average distance between adjacent protrusions is not more than 20 um and the coefficient of friction of the surface and the parameter of surface topography satisfies the following equations (1) and (2): ##EQU1## wherein y is the coefficient of friction, .beta. is mean flatness of protrusions and .sigma. is standard deviation of height distribution of protrusions.

公开(公告)号：US5336079A

公开(公告)日：1994-08-09

申请号：US847586

申请日：1992-03-04

申请人： Iwao Okazaki ,  Koichi Abe ,  Hidehito Minamizawa ,  Takeo Fukuyama

发明人： Iwao Okazaki ,  Koichi Abe ,  Hidehito Minamizawa ,  Takeo Fukuyama

IPC分类号： B32B27/18 ,  G11B5/64 ,  G11B5/733 ,  B32B5/16

CPC分类号： G11B5/733 ,  B32B27/18 ,  Y10S428/91 ,  Y10T428/25 ,  Y10T428/254 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/259 ,  Y10T428/31

摘要： Disclosed is a biaxially oriented laminated film having at least three layers which has excellent abrasion resistance and electromagnetic conversion property when the film is used as the base film of a magnetic recording media. The biaxially oriented laminated film comprises at least one outermost layer containing particles A, the particle density ratio at surface layer of the particles A is not less than 0.01, and the mean primary particle size D of the particles A and the thickness T of the outermost layer containing the particles A satisfies the equation; D.ltoreq.T.ltoreq.200D.

摘要翻译： 公开了当将该膜用作磁记录介质的基膜时，具有至少三层的双轴取向叠层膜，其具有优异的耐磨性和电磁转换性。 双轴取向叠层膜包含至少一个含有颗粒A的最外层，颗粒A的表层的颗粒密度比不小于0.01，颗粒A的平均一次粒径D和最外层的厚度T 包含颗粒A的层满足等式; D

公开(公告)号：US5458964A

公开(公告)日：1995-10-17

申请号：US104759

申请日：1993-08-12

申请人： Iwao Okazaki ,  Masahiro Kimura ,  Masatoshi Aoyama ,  Masaru Suzuki ,  Koichi Abe ,  Yukari Nakamori ,  Hidehito Minamizawa ,  Katsuya Okamoto ,  Hiroyuki Tanaka

发明人： Iwao Okazaki ,  Masahiro Kimura ,  Masatoshi Aoyama ,  Masaru Suzuki ,  Koichi Abe ,  Yukari Nakamori ,  Hidehito Minamizawa ,  Katsuya Okamoto ,  Hiroyuki Tanaka

IPC分类号： B32B27/20 ,  C08J5/18 ,  G11B5/73 ,  G11B5/738 ,  B32B5/16

CPC分类号： C08J5/18 ,  B32B27/20 ,  G11B5/7305 ,  G11B5/738 ,  C08J2367/02 ,  Y10S428/91 ,  Y10T428/25 ,  Y10T428/254 ,  Y10T428/257 ,  Y10T428/259 ,  Y10T428/31786

摘要： Disclosed is a biaxially oriented film and a laminated film containing specified organic particles at a content of 0.001 to 20% by weight. The strength when deformed by 10% (S.sub.10) of the organic particles is in the range of 3 to 30 kgf/mm.sup.2, the thermal decomposition temperature for causing 10% loss in weight thereof is not lower than 350.degree. C. The weight average diameter thereof is in the range of 0.005 to 5 .mu.m. Since the organic particles have a good affinity with the matrix resin of the film and a good thermal resistance and the hardness of the particles is appropriate, desired protrusions hardly chipped and having an appropriate hardness for hardly scratching a magnetic surface can be formed on a film surface easily and uniformly. Therefore, a film excellent in abrasion resistance and scratch resistance at a high running speed and excellent in running durability can be obtained, which is useful particularly as a base film of a magnetic tape.

摘要翻译： 公开了含有0.001〜20重量％的特定有机粒子的双轴取向膜和层叠膜。 当有机颗粒变形10％（S10）时的强度在3〜30kgf / mm 2的范围内，其重量减少10％的热分解温度不低于350℃。重量平均直径 为0.005〜5μm的范围。 由于有机颗粒与膜的基质树脂具有良好的亲和性，并且具有良好的耐热性，并且颗粒的硬度是合适的，因此可以在薄膜上形成难以切割并且具有难以刮擦磁性表面的适当硬度的所需突起 表面容易均匀。 因此，可以获得在高运行速度下具有优异的耐磨性和耐擦伤性的膜，并且可以获得特别用作磁带的基膜的运行耐久性优异的运行耐久性优异的膜。

公开(公告)号：US5998004A

公开(公告)日：1999-12-07

申请号：US749781

申请日：1996-11-15

申请人： Satoru Nishino ,  Koichi Abe ,  Takeo Fukuyama ,  Hidehito Minamizawa

发明人： Satoru Nishino ,  Koichi Abe ,  Takeo Fukuyama ,  Hidehito Minamizawa

IPC分类号： B32B5/16 ,  B32B7/02 ,  C08J5/18 ,  C08K3/22

CPC分类号： C08J5/18 ,  C08K3/22 ,  B29K2995/0072 ,  C08J2367/02 ,  Y10T428/24983 ,  Y10T428/254 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/259

摘要： A biaxially oriented polyester film having excellent scratch resistance and chipping resistance by the inclusion of particles (A) having an average primary particle diameter of 5-300 nm, an average degree of aggregation of 5-100 and a Mohs' hardness of 6-10 by the content of 0.01-5 wt. %. The scratch resistance and chipping resistance of the film can be further increased by the inclusion of particles (B) having an average particle diameter of 0.3-3 .mu.m, a Mohs' hardness smaller than that of particles (A) and/or non-incorporated particles.

摘要翻译： 通过包含平均一次粒径为5-300nm，平均聚集度为5〜100，莫氏硬度为6-10的粒子（A），具有优异的耐擦伤性和耐崩裂性的双轴取向聚酯膜 通过含量0.01-5wt。 ％。 通过包含平均粒径为0.3-3μm的颗粒（B），莫氏硬度小于颗粒（A）和/或非颗粒的颗粒（B），可以进一步提高膜的耐划伤性和耐崩裂性， 并入颗粒。

公开(公告)号：US5284699A

公开(公告)日：1994-02-08

申请号：US996851

申请日：1992-12-21

申请人： Satoru Nishino ,  Koichi Abe ,  Takeo Fukuyama ,  Hidehito Minamizawa

发明人： Satoru Nishino ,  Koichi Abe ,  Takeo Fukuyama ,  Hidehito Minamizawa

IPC分类号： C08J5/18 ,  C08K3/22 ,  B32B7/02 ,  B32B5/16

CPC分类号： C08J5/18 ,  C08K3/22 ,  B29K2995/0072 ,  C08J2367/02 ,  Y10T428/24983 ,  Y10T428/254 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/259

摘要： A biaxially oriented polyester film having excellent scratch resistance and chipping resistance by the inclusion of particles (A) having an average primary particle diameter of 5-300 nm, an average degree of aggregation of 5-100 and a Mohs' hardness of 6-10 by the content of 0.01-5 wt. %. The scratch resistance and chipping resistance of the film can be further increased by the inclusion of particles (B) having an average particle diameter of 0.3-3 .mu.m, a Mohs' hardness smaller than that of particles (A) and/or non-incorporated particles.

摘要翻译： 通过包含平均一次粒径为5-300nm，平均聚集度为5〜100，莫氏硬度为6-10的粒子（A），具有优异的耐擦伤性和耐崩裂性的双轴取向聚酯膜 通过含量0.01-5wt。 ％。 通过包含平均粒径为0.3-3（my）m的颗粒（B），莫氏硬度小于颗粒（A）和（或）的颗粒（B），可以进一步提高膜的抗划伤性和耐崩裂性 非并入颗粒。

公开(公告)号：US5609949A

公开(公告)日：1997-03-11

申请号：US420704

申请日：1995-04-11

申请人： Satoru Nishino ,  Koichi Abe ,  Takeo Fukuyama ,  Hidehito Minamizawa

发明人： Satoru Nishino ,  Koichi Abe ,  Takeo Fukuyama ,  Hidehito Minamizawa

IPC分类号： B32B5/16 ,  B32B7/02 ,  C08J5/18 ,  C08K3/22

CPC分类号： C08J5/18 ,  C08K3/22 ,  B29K2995/0072 ,  C08J2367/02 ,  Y10T428/24983 ,  Y10T428/254 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/259

摘要： A biaxially oriented polyester film having excellent scratch resistance and chipping resistance by the inclusion of particles (A) having an average primary particle diameter of 5-300 nm, an average degree of aggregation of 5-100 and a Mohs' hardness of 6-10 by the content of 0.01-5 wt. %. The scratch resistance and chipping resistance of the film can be further increased by the inclusion of particles (B) having an average particle diameter of 0.3-3 .mu.m, a Mohs' hardness smaller than that of particles (A) and/or non-incorporated particles.

摘要翻译： 通过包含平均一次粒径为5-300nm，平均聚集度为5〜100，莫氏硬度为6-10的粒子（A），具有优异的耐擦伤性和耐崩裂性的双轴取向聚酯膜 通过含量0.01-5wt。 ％。 通过包含平均粒径为0.3-3μm的颗粒（B），莫氏硬度小于颗粒（A）和/或非颗粒的颗粒（B），可以进一步提高膜的耐划伤性和耐崩裂性， 并入颗粒。

公开(公告)号：US5858507A

公开(公告)日：1999-01-12

申请号：US635959

申请日：1996-04-29

申请人： Minoru Yoshida ,  Kenji Tsunashima ,  Katsuya Toyoda ,  Hidehito Minamizawa

发明人： Minoru Yoshida ,  Kenji Tsunashima ,  Katsuya Toyoda ,  Hidehito Minamizawa

IPC分类号： B29C55/06 ,  B29C55/12 ,  C08J5/18 ,  B32B27/20 ,  B29C55/14 ,  B32B27/36 ,  B32B33/00

CPC分类号： C08J5/18 ,  B29C55/065 ,  B29C55/12 ,  B29C2037/90 ,  B29K2067/00 ,  C08J2367/02 ,  Y10S428/91 ,  Y10T428/24355 ,  Y10T428/254 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/258 ,  Y10T428/259 ,  Y10T428/31786

摘要： A biaxially oriented polyester film wherein the ratio (=I.sub.MD /I.sub.ND) of the peak intensity (I.sub.MD) in the longitudinal direction to the peak intensity (I.sub.ND) in the thickness direction determined at 1615 cm.sup.-1 by laser Raman scattering method is 6 or more; and a process for production of a biaxially oriented polyester film which comprises the steps of controlling the ratio (A/B) of the maximum thickness (A) of the edge portion of a cast film to the thickness (B) of the central portion in the transverse direction thereof in the range of 2 to 6, biaxially stretching the cast film, and controlling the peak intensity ratio of the biaxially oriented film determined by the laser Raman scattering method in the above-described range. The biaxially oriented polyester film thus produced has a specific orientation in the longitudinal direction, and therefore has great strength in the longitudinal direction and small irregularity in properties such as thickness or birefringence.

摘要翻译： PCT No.PCT / JP95 / 01702 Sec。 371日期：1996年4月29日 102（e）日期1996年4月29日PCT提交1995年8月28日PCT公布。 公开号WO96 / 06722 日期：1996年3月7日一种双轴取向聚酯膜，其中通过激光拉曼在1615cm -1处确定的在纵向上的峰强度（IMD）与厚度方向上的峰强度（IND）之比（= IMD / IND） 散射方法为6以上; 以及制造双轴取向聚酯膜的方法，包括以下步骤：控制流延膜的边缘部分的最大厚度（A）与中心部分的厚度（B）之比（A / B） 其横向方向为2〜6，双轴拉伸流延膜，并将通过激光拉曼散射法确定的双轴取向膜的峰强度比控制在上述范围内。 由此制造的双轴取向聚酯膜在长度方向上具有特定取向，因此在长度方向上具有很大的强度，并且在诸如厚度或双折射的性能上具有小的不规则性。