HEAT SHRINKABLE POLYESTER FILM, METHOD FOR PRODUCING SAME, AND PACKAGED BODY

摘要

Disclosed is a heat shrinkable polyester film which does not suffer (namely natural shrinkage), is suppressed in decrease of the shrinkage in the main shrinkage direction, and is able to be beautifully and efficiently fitted to a container or the like without changing the temperature conditions for heat shrinkage when the heat shrinkable polyester film is fitted, as a label, to the container or the like by means of heat shrinkage even after high-temperature summer storage in an out door warehouse which has no temperature control system. Specifically disclosed is a heat shrinkable polyester film which is formed from a polyester resin that is mainly composed of ethylene terephthalate and contains 3-12 % by mole (inclusive) of one or more monomer components, which can be amorphous components, relative to all the polyester resin components. The heat shrinkable polyester film is characterized in that the shrinkage in 80°C glycerin, the shrinkage in 130°C glycerin and the tensile breaking strength in the longitudinal direction are controlled within specific ranges.