| 摘要 |
PROBLEM TO BE SOLVED: To obtain a biaxially oriented polyester film having excellent winding workability, flatness and slipperiness. SOLUTION: This polyester film contains 0.01-3.0wt.% of spherical silica particles having a particle size distribution value (r) of >1.5 and <4.0 and an average particle diameter of 0.1-3.0μm. |
