| abstract |
PROBLEM TO BE SOLVED: To have low interference properties capable of suppressing rainbow unevenness, excellent adhesion to a hard coat layer or the like which is required in a high dimension in various optical applications, blocking resistance, transparency, and further having high slipperiness. PROBLEM TO BE SOLVED: To provide an easily-adhesive polyester film which can be suitably used in an optical application which is excellent in handleability in a post-process such as a manufacturing process and a polarizing plate manufacturing process of a liquid crystal display device. Having a coating layer containing a polyurethane resin having a polyester resin having a naphthalene skeleton, the content a of the polyurethane resin component when the total amount of solid content of the coating layer is 100% by mass, the content of a polyester resin component having a naphthalene skeleton When the amount b and the total amount c of the components other than these are expressed in a triangular chart, a, b, There a method for producing a highly adhesive polyester film in the area surrounded by the specific four lines, the production method of the highly adhesive polyester film to adopt a line coating method as the coating method. [Selection diagram] Figure 1 |