发明名称 |
PROTECTIVE FILM FOR TEMPORARILY LAMINATION TO ELECTROMAGNETIC WAVE SHIELDING SHEET, METHOD FOR PRODUCING THE SAME, AND ELECTROMAGNETIC WAVE SHIELDING SHEET |
摘要 |
The present invention is to provide an electromagnetic wave shielding sheet with a protective film that is temporarily laminated on a copper mesh layer for shielding electromagnetic waves, the electromagnetic wave shielding sheet is not discolored even after long-term use, especially at high temperature and high humidity, while the protective film exhibits appropriate adhesion properties. To achieve the object, there is provided an electromagnetic wave shielding sheet comprising a transparent substrate, at least a copper mesh layer provided on one surface of the transparent substrate and a protective film temporarily laminated to the copper-mesh-layer-side surface, the protective film comprises a support and an adhesive layer containing a polymer having repeating units derived from an acrylic ester and/or a methacrylic ester on the support, and the amount of free organic acids in the adhesive layer is an amount which makes 10 or less the color difference &Dgr;EL*a*b* of the copper-mesh-layer-side surface of the electromagnetic wave shielding sheet before and after the adhesive layer surface is laminated on the copper-mesh-layer-side surface and they are left for 200 hours in an atmosphere of a temperature of 60° C. and a relative humidity of 95%.
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申请公布号 |
US2010247877(A1) |
申请公布日期 |
2010.09.30 |
申请号 |
US20100796117 |
申请日期 |
2010.06.08 |
申请人 |
DAI NIPPON PRINTING CO., LTD. |
发明人 |
GOTOU AKIKO;KAMIYAMA HIRONORI |
分类号 |
B32B7/12;C09J133/10;H05K9/00 |
主分类号 |
B32B7/12 |
代理机构 |
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地址 |
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