发明名称 |
BIAXIAL ORIENTIERTE POLYESTERFOLIE |
摘要 |
<p>A biaxially oriented polyester film is provided, which has a plurality of depressions and a plurality of protrusions on at least one surface thereof, in a configuration such that at least one protrusion exists within each depression or at least protrusion exists in the area where two or more depressions are contiguous to each other depressions having an area fraction of from 1x10-3 to 6x10-1. The polyester film is useful as a substrate for magnetic recording tapes such as audio and video tapes, and the resultant magnetic recording tapes are excellent in both electromagnetic transducing characteristics and runnability.</p> |
申请公布号 |
DE3219240(A1) |
申请公布日期 |
1982.12.09 |
申请号 |
DE19823219240 |
申请日期 |
1982.05.21 |
申请人 |
TORAY INDUSTRIES,INC. |
发明人 |
OKABE,KAZUO;MOTEGI,MASAHIKO;MIURA,YASUKI |
分类号 |
C08L67/00;B29C49/00;B29C55/00;B29C55/12;C08J5/18;C08L67/02;G11B5/73;(IPC1-7):29D7/22 |
主分类号 |
C08L67/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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