POLYESTER FILM FOR TRANSFER MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a polyester film for a transfer material which can reduce the stain of a heating roll or a mold to remarkably lessen the cleaning frequency thereof. SOLUTION: This polyester film for the transfer material is characterized in that the amount of oligomer on the surface after being heat-treated at 180°C for 10 min is 0.01-2.1 mg/m2. A coat layer may be formed on the surface of the film. The polyester film is produced preferably from a polyester raw material containing oligomer in an amount of 0.10-0.70 wt%. COPYRIGHT: (C)2004,JPO