18690513. LAMINATED POLYESTER FILM, LAMINATE, AND METHOD FOR PRODUCING LAMINATED POLYESTER FILM (TORAY INDUSTRIES, INC.)

LAMINATED POLYESTER FILM, LAMINATE, AND METHOD FOR PRODUCING LAMINATED POLYESTER FILM

Organization Name

TORAY INDUSTRIES, INC.

Inventor(s)

Tadahiko Iwaya of Otsu-shi, Shiga JP

Kazuyoshi Ota of Otsu-shi, Shiga JP

Keiko Sawamoto of Otsu-shi, Shiga JP

Ayaka Yamamoto of Otsu-shi, Shiga JP

LAMINATED POLYESTER FILM, LAMINATE, AND METHOD FOR PRODUCING LAMINATED POLYESTER FILM

This abstract first appeared for US patent application 18690513 titled 'LAMINATED POLYESTER FILM, LAMINATE, AND METHOD FOR PRODUCING LAMINATED POLYESTER FILM

Original Abstract Submitted

There are provided a laminated polyester film which is excellent in coating uniformity and adhesiveness of water-based coating, a laminate using the same, and a method for producing a laminated polyester film. The laminated polyester film of the present invention includes an easy-adhesion layer (X) on an outermost surface of at least one side of a polyester base material, in which a ratio (γh/γd) of hydrogen bonds (γh) to a dispersive force (γd) in surface free energy of the easy-adhesion layer (X) is 0.250 or less. In addition, the laminated polyester film according to another aspect of the present invention includes an easy-adhesion layer (X) on an outermost surface on at least one side of a polyester base material, in which an advancing angle θa of water in the easy-adhesion layer (X) is 75.0° or more and 110.0° or less, and a receding angle θr of water is 5.0° or more and 40.0° or less.