| 摘要 |
PURPOSE:To obtain a heat-shrinkable polyester film having high shrinkage, shows such an excellent shrinkage behavior that it continues to shrink slowly even a considerable time after the start of shrink and almost completely suppressed in the formation of unevenness of shrinkage. CONSTITUTION:A heat-shrinkable polyester film comprising a dicarboxylic acid component based on terephthalic acid or its esterifiable derivative and a diol component based on ethylene glycol and containing 0.01-1mol, per mol of the dicarboxylic acid, of at least one member selected between an at least tribasic carboxylic acid and an at least trihydric alcohol. |
