发明名称 |
POLYESTER FILM FOR MAGNETIC RECORDING MEDIUM |
摘要 |
<p>PURPOSE:To obtain the title film excellent in mar resistance, durability, adhesion to a magnetic layer by forming a coating layer on one surface of a polyester film to which specified particles are added so as to give a specified center-line average roughness to the surface. CONSTITUTION:This film is prepared by forming a coating layer (e.g. water- dispersible thermoplastic polyester) on one surface of a polyester (e.g. polyethylene terephthalate) film to which 0.05-5wt.% particles (e.g. Al2O3) of a Mohs hardness >=8 and a mean particle diameter of 0.01-5mum are added so as to give a center-line average roughness of 0.005-0.040mum to the surface.</p> |
申请公布号 |
JPH0324134(A) |
申请公布日期 |
1991.02.01 |
申请号 |
JP19890159955 |
申请日期 |
1989.06.22 |
申请人 |
DIAFOIL CO LTD |
发明人 |
KAWAGUCHI CHIKAKAZU;MEGURO YOSHIO;HARADA TAKASHI |
分类号 |
C08J5/18;C08L67/02;G11B5/73;G11B5/733 |
主分类号 |
C08J5/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|