发明名称 |
BIAXIALLY ORIENTED THERMOPLASTIC RESIN FILM |
摘要 |
<p>A biaxially oriented thermoplastic resin film suitable as a base film of a magnetic recording medium comprises a laminate having a layer A composed of a thermoplastic resin A containing particles on at least one surface of a layer B composed of a thermoplastic resin B. The film has a ratio t/d of the thickness of the layer A "t" to the mean diameter of the particles contained in the thermoplastic resin A "d" in the range 0.1 to 5, a number of protrusions having a diameter d1 of not less than 0.7 mu m and not more than 2.6 mu m among protrusions existing on the surface of the layer A in the range 100 to 10,000/mm<2> and a ratio L/S of a number S of protrusions having a smaller diameter d2 (0.2 mu m </= d2 < 0.7 mu m) to the number L of protrusions having a diameter d1 in the above range.</p> |
申请公布号 |
KR100241146(B1) |
申请公布日期 |
2000.02.01 |
申请号 |
KR19920021738 |
申请日期 |
1992.11.18 |
申请人 |
TORAY INDUSTRIES, INC. |
发明人 |
OKAMOTO, KATSUYA;ABE, KOICHI;NAKAJIMA, SYOJI |
分类号 |
B32B27/18;G11B5/73;G11B5/738;(IPC1-7):B32B27/08;G11B5/704;B32B27/36 |
主分类号 |
B32B27/18 |
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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