Patent ID: 6451445
Filing Date: 2002-09-17
Classification: B29C,B29D,B29K,B65C,C08J,Y10T

Abstract:
A heat shrinkable polyester film whose hot water shrinkage along its main shrinkage direction is equal to or greater than 20% when the film is put in hot water of 70Â° C. for 5 sec; 35% to 55% when put in hot water of 75Â° C. for 5 sec; and 50% to 60% when put in hot water of 80Â° C. for 5 sec, wherein the compressive strength of a label formed by the film satisfies a following expression:y>x2.2 where y denotes compressive strength (mN) and x denotes film thickness (&mgr;m).