| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polyester film for metal lamination and fabrication that has excellent abrasion resistance, taste characteristics, and adhesion after retorting and is useful for metallic cans by constituting the film with a biaxially oriented polyester film that has a low content of free aromatic dicarboxylic mono-methyl ester and contains over prescribed amounts of specific metals. SOLUTION: This objective film is constituted of a biaxially oriented polyester film having <=2 ppm of free aromatic dicarboxylic mono-methyl ester content and >=100 ppm of the total metal content including Ti, Mn and Mg. This film preferably has a main melt peak of >=246 deg.C and a plane orientation coefficient of 0.100-0.120. In a preferred embodiment, the polyester of this film contains >=90 mol.% of ethylene terephthalate and/or ethylene naphthalate, has an intrinsic viscosity of >=0.651 dl/g and contains 0.01-50 wt.% of flocculated dry silica with an average particle size of 0.01-10μm. |
