HEAT SHRINKABLE POLYESTER FILM WITH SUPERIOR LABELLING TO A BOTTLE

摘要

PURPOSE: A heat-shrinkage polyester film is provided to produce the film with a multi-layered unveiling process without a separate coating process, to maintain the specific physical property of the film, and to offer excellent solvent adhesion force and blocking resistance. CONSTITUTION: A heat-shrinkage polyester film has at least three layers containing an inner layer and outmost layers on the upper and lower sides of the inner layer. The outmost layers are formed of dicarboxylic acid, and is a polyester resin containing terephthalic acid or dimethyl terephthalate. The thickness ratio of the outmost layers and the inner layer satisfies equation 1: thickness of one outmost layer : thickness of the inner layer : thickness of the other outmost layer = 1 : 11±8 : 1. The inner layer is a copolymer polyester resin obtained by copolymerizing dicarboxylic acid containing terephthalic acid or dimethyl terephthalate, and a diol composition containing ethylene glycol and neopentyl glycol.