| 摘要 |
PURPOSE: To obtain a white polyester film having excellent adhesive property and antistatic property by incorporating specified amounts of specified resin and polymer in a coating layer, respectively. CONSTITUTION: This biaxial-stretching white polyester film contains 3-20wt.% of titanium dioxide particles with the average particle size of 0.20-0.50μm and 0.1-2wt.% of inert inorganic particles with the average particle size of 1.0-5.0μm, has a coating layer with the thickness of 0.02-0.5μm on at least one surface, and has the thickness of 20-300μm, which satisfies OD>=0.6b<=1.0 [OD is a concealing degree and (b) is a (b) value in JISZ-8722] at the same time. The applied layer contains (1) 50-90weight% of resin having phosphoric acid group, (2) 5-45wt.% of at least one kind of resin selected among acrylic-based resin, polyester-based resin and polyurethane-based resin and (3) 5-45wt.% of polymer having oxazoline group. Thus, the antistatic white polyester film having the excellent adhesive property can be obtained. |
