HEAT-SHRINKABLE POLYESTER FILM

摘要

PURPOSE: A heat-shrinkage polyester film is provided to have excellent shrinkage properties by preventing the generation of shrinking wrinkles, distortion, and label folding in a contraction process labeling various bottles such as a plastic bottle and glass label. CONSTITUTION: A heat-shrinkage polyester film has a shrinkage ratio of (-0.5)-1.0. The shrinkage ratio is the ratio of a shrinkage ratio of 70 deg. C warm water to 100 deg. C warm water in a machine direction and is defined by formula 1: the shrinkage ratio in 70 deg. C warm water/the shrinkage ratio in 100deg. C warm water. A heat shrinkage ratio in the machine direction is 5.0 % or less at 70-90deg. C. The heat shrinkage ratio in the machine direction is 40% or more(90 deg. C warm water, 10 seconds).