| 摘要 |
PROBLEM TO BE SOLVED: To provide a release film making and holding both of destaticizing performance which cannot be revealed in the conventional polyester film while basic request characteristics, such as finishing outside, metal-plating properties, etc. of a printed circuit board in a thermal pressing step when manufacturing the printed circuit board and mold releasing properties excellent in printed circuit board material. SOLUTION: The release film has a polyester film having an applying layer on at least one side surface in which the surface specific resistance value of the applying layer surface is a range of 1×10<SP>7</SP>to 1×10<SP>12</SP>Ω, and a water droplet contact angle of a range of 70 to 120°. COPYRIGHT: (C)2009,JPO&INPIT
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