发明名称 RELEASE FILM
摘要 The present invention provides a release film comprising a polyester film which is capable of realizing a high-accuracy inspection of a polarizing plate without undergoing any of problems such as difficulty in detection of foreign matters or defects and likelihood of overlooking thereof when inspecting the polarizing plate by a Cross-Nicol method. The present invention relates to (i) a release film for a polarizing plate which comprises a polyester film and a release layer formed on one surface of the polyester film by a coating/stretching method, wherein a haze of the release film is 7 to 18%, and an L value of the release film is not more than 77 as measured form a side of the release layer by a reflection method; and (ii) a release film for a polarizing plate, comprising a polyester film and a release layer formed on one surface of the polyester film by a coating stretching method, wherein a surface roughness (Ra) of the release film is 11 to 25 nm, and an image clarity value of the release film is not less than 90%.
申请公布号 EP2251719(A4) 申请公布日期 2013.09.04
申请号 EP20090714108 申请日期 2009.02.02
申请人 MITSUBISHI PLASTICS, INC. 发明人 ISAKI, KIMIHIRO;KUNUGIHARA, KAZUHIRO;FUJITA, MASATO
分类号 G02B5/30;B32B27/00;B32B27/08;B32B27/36;G01N21/88;G02F1/1335 主分类号 G02B5/30
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