发明名称 |
Biaxially oriented, laminated polyester film |
摘要 |
<p>A biaxially oriented, laminated polyester film has a lamination structure with at least two layers. At least one of the outermost layers of the film is a thin laminated layer A having a thickness of not more than 3 mu m. In the layer A, mono-dispersed particles are present at a very small content of not less than 0.01% by weight and less than 0.3% by weight. The mono-dispersed particles have a mean degree of agglomeration of less than 5 and a mean primary particle diameter of not less than 0.05 mu m and not more than 3 mu m. A relative standard deviation of height distribution of protrusions formed on the surface of layer A is not more than 1.2. When the polyester film is used as a base film for magnetic recording media, the abrasion resistance of the film surface at a high speed can be greatly increased.</p> |
申请公布号 |
EP1099545(A1) |
申请公布日期 |
2001.05.16 |
申请号 |
EP20000203629 |
申请日期 |
1994.08.30 |
申请人 |
TORAY INDUSTRIES, INC. |
发明人 |
OKAZAKI, IWAO;MIYAKE, TOHRU;ABE, KOICHI;OHSHIMA, KEISUKE |
分类号 |
B32B27/20;B32B27/36;G11B5/733;G11B5/738;(IPC1-7):B32B27/36;G11B5/73 |
主分类号 |
B32B27/20 |
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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