发明公开
EP0609077A1 Unidirectionally long, biaxially oriented film of polyethylene-2,6-naphthalenedicarboxylate
失效
桦木ine ine er e，，。。。。。。。。。。。。。。。。。。。。。。
- 专利标题： Unidirectionally long, biaxially oriented film of polyethylene-2,6-naphthalenedicarboxylate
- 专利标题（中）： 桦木ine ine er e，，。。。。。。。。。。。。。。。。。。。。。。
-
申请号： EP94300598.3申请日： 1994-01-27
-
公开(公告)号： EP0609077A1公开(公告)日： 1994-08-03
- 发明人: Nishiyama, Masanori , Saeki, Yasuhiro
- 申请人： TEIJIN LIMITED
- 申请人地址： 6-7, Minamihommachi 1-chome Chuo-ku Osaka-shi, Osaka 541 JP
- 专利权人： TEIJIN LIMITED
- 当前专利权人： TEIJIN LIMITED
- 当前专利权人地址： 6-7, Minamihommachi 1-chome Chuo-ku Osaka-shi, Osaka 541 JP
- 代理机构： Votier, Sidney David
- 优先权： JP13593/93 19930129
- 主分类号： C08J5/18
- IPC分类号： C08J5/18 ; B29C55/12 ; G11B5/704
摘要：
A unidirectionally long, biaxially oriented film of polyethylene-2,6-naphthalenedicarboxylate:
(A) which has a Young's modulus of 400 to 600 kg/mm² in the machine direction and a Young's modulus of at least 1,200 kg/mm² in the transverse direction, the ratio of Young's modulus in the transverse direction to the Young's modulus in the machine direction being at least 2.5,
(B) which has a heat shrinkage of 1 % or less after heat-treated under no load at 105°C for 30 minutes, and
(C) which has a surface roughness (Ra) of 0.005 to 0.010 µm.
This film is useful as a base film for magnetic tape having the capacity of log hours' recording and reproduction.
(A) which has a Young's modulus of 400 to 600 kg/mm² in the machine direction and a Young's modulus of at least 1,200 kg/mm² in the transverse direction, the ratio of Young's modulus in the transverse direction to the Young's modulus in the machine direction being at least 2.5,
(B) which has a heat shrinkage of 1 % or less after heat-treated under no load at 105°C for 30 minutes, and
(C) which has a surface roughness (Ra) of 0.005 to 0.010 µm.
This film is useful as a base film for magnetic tape having the capacity of log hours' recording and reproduction.
公开/授权文献
信息查询
