公开(公告)号：US4348446A

公开(公告)日：1982-09-07

申请号：US183901

申请日：1980-09-04

申请人： Yukio Mitsuishi ,  Shigeru Shiozaki ,  Takao Chujo ,  Takeyuki Yokoyama

发明人： Yukio Mitsuishi ,  Shigeru Shiozaki ,  Takao Chujo ,  Takeyuki Yokoyama

IPC分类号： C08K3/00 ,  G11B5/70

CPC分类号： C08K3/0033 ,  C08K3/00 ,  C08K7/00 ,  Y10S428/90 ,  Y10T428/24413 ,  Y10T428/24421 ,  Y10T428/2443 ,  Y10T428/251 ,  Y10T428/256 ,  Y10T428/258 ,  Y10T428/259 ,  Y10T428/31 ,  Y10T428/31797

摘要： A biaxially oriented polyester film containing fine particles of insoluble inert substance, has a kinetic coefficient of friction of not more than 0.3, and has microscopic protrusions integrated thereto, said protrusion having an peak-to-valley height of not more than 1 micron mostly range of 0.2 to 0.5 micron. The film having improved slipperiness is useful as the base film of magnetic recording tape for a video tape recorder or a computer data storage.

摘要翻译： 含有不溶性惰性物质的微粒的双轴取向聚酯膜具有不大于0.3的动摩擦系数，并且具有与其一体化的微观突起，所述突起具有不大于1微米的峰谷高度范围 为0.2〜0.5微米。 具有改善的滑动性的胶片作为用于录像机或计算机数据存储的磁记录带的基膜是有用的。

公开(公告)号：US5618609A

公开(公告)日：1997-04-08

申请号：US359892

申请日：1994-12-20

申请人： Takao Chujo ,  Masanori Nishiyama ,  Hisashi Hamano

发明人： Takao Chujo ,  Masanori Nishiyama ,  Hisashi Hamano

IPC分类号： B29C55/14 ,  C08J5/18 ,  C08G63/02 ,  C08G63/18

CPC分类号： C08J5/18 ,  B29C55/143 ,  B29K2067/00 ,  B29K2995/0072 ,  C08J2367/02 ,  Y10T428/24355 ,  Y10T428/24372

摘要： A biaxially oriented film of a polyethylene-2,6-naphthalenedicarboxylate, which (1) has a Young's modulus of at least 600 kg/mm.sup.2 in the transverse direction and a Young's modulus of at least 500 kg/mm.sup.2 in the longitudinal direction, the Young's modulus in the transverse direction being greater than the Young's modulus in the longitudinal direction, (2) satisfies the following relationships between an elongation S.sub.T (%) in the transverse direction per kg/mm.sup.2 of a load at 120.degree. C. and the Young's modulus Y.sub.T (kg/mm.sup.2) in the transverse direction,-0.001Y.sub.T +0.89

摘要翻译： 聚乙烯-2,6-萘二甲酸酯的双轴取向膜，（1）横向的杨氏模量至少为600kg / mm2，纵向的杨氏模量为至少500kg / mm2， 横向的杨氏模量大于纵向的杨氏模量，（2）满足在120℃的载荷下的横向上的伸长率ST（％）/ kg / mm2与杨氏模量 当YT为1200kg / mm2以上时，横向的模量YT（kg / mm2）为-0.001YT + 0.89

公开(公告)号：US5362571A

公开(公告)日：1994-11-08

申请号：US213638

申请日：1994-03-16

申请人： Takao Chujo ,  Hisashi Hamano ,  Masanori Nishiyama ,  Yasuhiro Saeki ,  Tatsuya Ogawa ,  Kouhei Endou

发明人： Takao Chujo ,  Hisashi Hamano ,  Masanori Nishiyama ,  Yasuhiro Saeki ,  Tatsuya Ogawa ,  Kouhei Endou

IPC分类号： B32B27/36 ,  C08J5/18 ,  G11B5/73 ,  G11B5/738 ,  B32B23/08 ,  B32B27/34 ,  C08G63/02

CPC分类号： G11B5/7305 ,  B32B27/36 ,  C08J5/18 ,  G11B5/738 ,  C08J2367/02 ,  Y10T428/26 ,  Y10T428/31786

摘要： There is provided a biaxially oriented polyester base film for a magnetic tape for use in a cassette for a digital audio tape recorder. The film has (a) a stress when the biaxially oriented polyester base film is extended in the longitudinal direction by 5% of at least 12 kg/mm.sup.2, (b) a residual extension in the longitudinal direction of 0.2 % or less and a residual extension in the transverse direction of 0.3% or less, (c) a heat shrinkage in the longitudinal direction of 1.5% or less, (d) at least one surface of which has a surface roughness, Ra, of 25 nm or less, and (e) a film thickness of in the range of from 3 to 12 .mu. m. A magnetic tape for use in a cassette for a digital audio tape recorder is also provided.

摘要翻译： 提供一种用于数字音频磁带录音机的磁带的用于磁带的双轴取向聚酯基膜。 该膜具有（a）当双轴取向聚酯基膜沿长度方向延伸至少12kg / mm 2的5％时的应力，（b）纵向的残余延伸为0.2％以下，残留 横向延伸率为0.3％以下，（c）长度方向的热收缩率为1.5％以下，（d）至少一面的表面粗糙度Ra为25nm以下，（d） （e）3至12μm范围内的膜厚度。 还提供了用于数字音频磁带录像机的磁带的磁带。

公开(公告)号：US5463015A

公开(公告)日：1995-10-31

申请号：US350470

申请日：1994-12-07

申请人： Takao Chujo ,  Hisashi Hamano ,  Masanori Nishiyama ,  Yasuhiro Saeki ,  Tatsuya Ogawa ,  Kouhei Endou

发明人： Takao Chujo ,  Hisashi Hamano ,  Masanori Nishiyama ,  Yasuhiro Saeki ,  Tatsuya Ogawa ,  Kouhei Endou

IPC分类号： B32B27/36 ,  C08J5/18 ,  G11B5/73 ,  G11B5/738 ,  C08G63/02

CPC分类号： G11B5/7305 ,  B32B27/36 ,  C08J5/18 ,  G11B5/738 ,  C08J2367/02 ,  Y10T428/26 ,  Y10T428/31786

摘要： There is provided a biaxially oriented polyester base film for a magnetic tape for use in a cassette for a digital audio tape recorder. The film has (a) a stress when the biaxially oriented polyester base film is extended in the longitudinal direction by 5% of at least 12 kg/mm.sup.2, (b) a residual extension in the longitudinal direction of 0.2% or less and a residual extension in the transverse direction of 0.3% or less, (c) a heat shrinkage in the longitudinal direction of 1.5% or less, (d) at least one surface of which has a surface roughness, Ra, of 25 nm or less, and (e) a film thickness of in the range of from 3 to 12 .mu.m. A magnetic tape for use in a cassette for a digital audio tape recorder is also provided.

摘要翻译： 提供一种用于数字音频磁带录音机的磁带的用于磁带的双轴取向聚酯基膜。 该膜具有（a）当双轴取向聚酯基膜沿长度方向延伸至少12kg / mm 2的5％时的应力，（b）纵向的残余延伸为0.2％以下，残留 横向延伸率为0.3％以下，（c）长度方向的热收缩率为1.5％以下，（d）至少一面的表面粗糙度Ra为25nm以下，（d） （e）3至12μm范围内的膜厚度。 还提供了用于数字音频磁带录像机的磁带的磁带。

公开(公告)号：US5631063A

公开(公告)日：1997-05-20

申请号：US358763

申请日：1994-12-19

申请人： Takao Chujo ,  Masanori Nishiyama ,  Hisashi Hamano

发明人： Takao Chujo ,  Masanori Nishiyama ,  Hisashi Hamano

IPC分类号： B29C55/14 ,  C08J5/18 ,  B32B3/26 ,  B32B27/36 ,  C08G63/189

CPC分类号： C08J5/18 ,  B29C55/143 ,  C08J2367/02 ,  Y10T428/24355 ,  Y10T428/24372

摘要： A biaxially oriented film of a polyethylene-2,6-naphthalenedicarboxylate, which (A) has a Young's modulus of at least 800 kg/mm.sup.2 in the longitudinal direction and a Young's modulus of at least 500 kg/mm.sup.2 in the transverse direction, the Young's modulus in the longitudinal direction being greater than the Young's modulus in the transverse direction, (B) satisfies the following relationships between an elongation S.sub.M (%) in the longitudinal direction per a load of 1 kg/mm.sup.2 at 120.degree. C. and the Young's modulus Y.sub.M (kg/mm.sup.2) in the longitudinal direction,-0.001Y.sub.M +0.89

摘要翻译： 聚乙烯-2,6-萘二甲酸酯的双轴取向膜（A）的纵向杨氏模量为至少800kg / mm2，横向的杨氏模量为至少500kg / mm2， 长度方向的杨氏模量大于横向的杨氏模量，（B）满足以下关系：在120℃下，负荷为1kg / mm 2的纵向的伸长率SM（％）与 YM为1200 kg / mm2以下时，纵向的杨氏模量YM（kg / mm2）为-0.001YM + 0.89

公开(公告)号：US5439738A

公开(公告)日：1995-08-08

申请号：US274755

申请日：1994-07-14

申请人： Takao Chujo ,  Hisashi Hamano ,  Masanori Nishiyama ,  Yasuhiro Saeki ,  Tatsuya Ogawa ,  Kouhei Endou

发明人： Takao Chujo ,  Hisashi Hamano ,  Masanori Nishiyama ,  Yasuhiro Saeki ,  Tatsuya Ogawa ,  Kouhei Endou

IPC分类号： B32B27/36 ,  C08J5/18 ,  G11B5/73 ,  G11B5/738 ,  B32B7/12

CPC分类号： G11B5/7305 ,  B32B27/36 ,  C08J5/18 ,  G11B5/738 ,  C08J2367/02 ,  Y10T428/26 ,  Y10T428/31786

摘要： There is provided a biaxially oriented polyester base film for a magnetic tape for use in a cassette for a digital audio tape recorder. The film has (a) a stress when the biaxially oriented polyester base film is extended in the longitudinal direction by 5% of at least 12 kg/mm.sup.2, (b) a residual extension in the longitudinal direction of 0.2% or less and a residual extension in the transverse direction of 0.3% or less, (c) a heat shrinkage in the longitudinal direction of 1.5% or less, (d) at least one surface of which has a surface roughness, Ra, of 25 nm or less, and (e) a film thickness of in the range of from 3 to 12 .mu.m. A magnetic tape for use in a cassette for a digital audio tape recorder is also provided.