| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a heat-shrinkable polyester film that is excellent in high- speed fitting properties and finish of shrinkage without setting the film thickness to a value greater than that of the conventional films in all possible uses including its use for a small size PET bottle. SOLUTION: In a heat-shrinkable polyester film, a heat shrinkage ratio of the polyester film in a main shrinking direction is 20% or more after being treated in hot water at 70 deg.C for 5 sec, 35-55% after being treated in hot water at 75 deg.C for 5 sec and 50-60% after being treated in hot water at 80 deg.C for 5 sec. Additionally, a label 2 formed from the film has a compressive strength which satisfies the following formula: y>x2.2 (wherein y represents a compressive strength (mN); and x represents a film thickness (μm)).</p> |
