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：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：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：US06685865B2

公开(公告)日：2004-02-03

申请号：US09937939

申请日：2001-10-23

申请人： Katsuya Toyoda ,  Satoru Nishino ,  Toshiya Nishibayashi

发明人： Katsuya Toyoda ,  Satoru Nishino ,  Toshiya Nishibayashi

IPC分类号： B29C5516

CPC分类号： B29C55/14 ,  B29C55/143 ,  B29C55/16 ,  B29K2067/00 ,  Y10S428/91 ,  Y10T428/31786

摘要： The present invention is directed to a process for producing a biaxially oriented polyester film which comprises: subjecting a polyester film to simultaneous biaxial stretching in a stretching apparatus constructed to simultaneously stretch the film in the lengthwise and widthwise directions thereof; and subsequently subjecting the film to successive biaxial stretching in the lengthwise and widthwise directions thereof in the same apparatus as mentioned above. With this process, a film can be efficiently formed, without film breaking, which film is small in thickness and greatly strong in its lengthwise and widthwise directions.

摘要翻译： 本发明涉及一种双轴取向聚酯薄膜的制造方法，其特征在于，包括：使聚酯薄膜在拉伸装置中同时进行双轴拉伸，所述拉伸装置在长度方向和宽度方向同时拉伸薄膜; 然后在与上述相同的装置中使膜在长度方向和宽度方向上进行连续双轴拉伸。 通过该方法，可以有效地形成膜，而不会发生膜断裂，该膜的厚度小，并且其长度方向和宽度方向具有很大的强度。