| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a biaxially oriented polyethylene terephthalate film which is superior in dimensional stability, processability, and transparency and can reduce rainbow-like spots even at a wide view angle. <P>SOLUTION: In the biaxially oriented polyethylene terephthalate film having a laminated structure of at least three layers by a coextrusion method, inert particles are contained in both outermost layers, the ten-point average roughness (SRz) of the surfaces of the outermost layers is at least 0.5μm, retardation is 1,800 nm or below, variation in retardation in the film width direction is 400 nm/m or below, and a plane orientation coefficientΔP is 0.160-0.175. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
