| 摘要 |
PROBLEM TO BE SOLVED: To provide a white polyester film useful to laminate on a metal plate and to then mold it to become an outer surface of a container and having excellent film forming properties, cutting resistance and wear resistance. SOLUTION: In the laminate film of a constitution of layers A, B and C each made of a copolymerization polyester, the polyester for constituting the A, B and C layers contains a rutile type titanium oxide, a highest peak temperature (Te) of a loss elastic modulus of the laminate film and a glass transition temperature (Tg) of the polyester for constituting the layer A satisfy formulae of Tg>=78 and Te-Tg<=30 (wherein Tg is a glass transition temperature ( deg.C) of the polyester for constituting the layer A, and Te is a highest peak temperature ( deg.C) of a loss elastic modulus of the laminate film), and further an MOR value of the laminate film is less than 1.4. |
