发明名称 |
WHITE POLYESTER FILM AND REFLECTIVE SHEET |
摘要 |
In view of the above problems of the art, it is an object of the present invention to provide a white polyester film which achieves a high reflectivity and a high hiding property simultaneously, and hardly causes a film break and has high productivity. This object can be achieved by a white polyester film containing voids therein, wherein a resin constituting the film has a layer formed by using a polyester resin and a cyclic olefin copolymerized resin, and wherein a ratio of the void in a cross-section of the layer is more than 25% and 75% or less and the average particle size on number of the cyclic olefin copolymerized resin in the film is 0.1 µm or more and 3 µm or less. |
申请公布号 |
EP2128188(A1) |
申请公布日期 |
2009.12.02 |
申请号 |
EP20080710596 |
申请日期 |
2008.01.28 |
申请人 |
TORAY INDUSTRIES, INC. |
发明人 |
UEDA, TAKASHI;FUJII, HIDEKI;YOSHIDA, TATSUO;TAKAHASHI, KOZO;OKUDA, MASAHIRO;TANAKA, KAZUNORI;HIRAOKA, TOSHIHIKO |
分类号 |
B32B27/08;B32B27/20;B32B27/32;B32B27/36;C08J5/18;G02B5/02;G02F1/1335 |
主分类号 |
B32B27/08 |
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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