| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mold releasing film preventing sticking (blocking) to the back surface after a ceramic green sheet is molded and breakage caused by this, hardly generating irregularity on the roll end surface, and hardly causing bamboo shoot-like winding slippage in the vicinity of a winding core by slight shock in conveyance or transportation of a film roll. <P>SOLUTION: The double-sided mold releasing film has a silicone mold releasing layer on one surface of a polyester film, which has a dry peeling force on the mold releasing layer surface (A surface) of 10-400 mN/cm, and a mold releasing layer containing polyolefin or a long chain alkyl compound as the main component on the other surface, which has a dry peeling force on the mold releasing layer surface (B surface) of 10-1,000 mN/cm, and coefficient of static friction of the A surface and the B surface is 0.22-0.35. <P>COPYRIGHT: (C)2010,JPO&INPIT |
