| 摘要 |
PURPOSE: To obtain a heat-shrinking polyester film excellent in low-temperature shrinking properties, bondability with solvent, tear resistance, hot-water resistance, etc., and usable as e.g. a shrink label or a shrink packaging material. CONSTITUTION: This film is prepared by forming a copolyester made from a dicarboxylic acid component comprising 70-99mol% terephthalic acid and/or isophthalic acid and 1-30mol% naphthalenedicarboxylic acid and a diol component comprising 50-95mol% ethylene glycol and 5-50mol% at least one member selected from among diethylene glycol, tetramethylene glycol, 1,4- cyclohexanedimethanol and a propanediol derivative represented by the formula (wherein R1 and R2 are each a 1-6 C linear or branched saturated hydrocarbon group) into a film and uniaxially drawing this film. |
