| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging polyester film excellent not only in the ink printing and the vapor deposition adhesiveness with metal or oxide thereof but also in blocking properties and transparency. SOLUTION: This packaging polyester film has an easy adhesive film with a thickness of 0.005-0.1μm mainly constituted of fine particles (A) with an averge particle size of 20-150 nm composed of copolyester with a secondary transition point of 40-80 deg.C obtained by copolymerizing 2-8 mol.% of a dicarboxylic acid component having a metal base and fine particles (B) with an average particle size of 20-150 nm composed of an acrylic copolymer with a secondary transition point of 20-60 deg.C on at least the single surface of a polyester film.
|
