POLYESTER FILM FOR LAMINATE, LAMINATED SHEET AND FOOD AND DRINK CONTAINER FOR RETORTING

摘要

PROBLEM TO BE SOLVED: To provide a polyester film for laminates, having a low content of an ethylene terephthalate cyclotrimer and being excellent in flavor retention and scratch resistance and to provide a laminated sheet and a food and drink container for retorting by using the film. SOLUTION: This polyester film for laminates comprises a crystalline polyester made from a dicarboxylic acid being terephthalic acid, a diol component based on ethylene glycol as main components and 2mol% or above, based on the total dicarboxylic acid component, dimer acid and has a content of an ethylene terephthalate cyclotrimer of 0.8wt.% or below.