| 摘要 |
PROBLEM TO BE SOLVED: To provide a co-extruded laminated biaxially oriented polyester film in which inert particles forming unevenness on the film surface hardly fall off and furthermore, which prevents interference bands generated when transparent members with excellent light transmission properties stick together from being generated. SOLUTION: The laminated polyester film is characterized in that the film is a co-extruded film having a surface forming layer (A) and comprising at least two layers, and the density of projections having the interference bands of 5-th order or more observed by a double light beam interferometry on the surface of the layer (A) is equal to or more than 0.7/mm<SP>2</SP>, and no void substantially exists around the inert particles in the layer (A). COPYRIGHT: (C)2008,JPO&INPIT
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