Patent ID: 6447925
Filing Date: 2002-09-10
Classification: B29D,B29K,C08J,Y10S,Y10T

Abstract:
A heat-shrinkable polyester film having a shrinkability in hot water (hereinafter referred to as a hot-water shrinkability) at 95Â° C. for 10 seconds ranging from 30% to 50% in at least one direction (hereinafter referred to as direction (A)) and ranging from 25% to 45% in a direction (hereinafter referred to as direction (B)) perpendicular to said at least one direction, wherein a difference &Dgr;HS between said hot-water shrinkability in direction (A) and said hot-water shrinkability in direction (B) (i.e., &Dgr;HS=|hot-water shrinkability in direction (A)â€”hot-water shrinkability in direction (B)|) is 10% or smaller, wherein said film comprises a non-ionic surfactant anti-fogging agent layer on at least one surface thereof and wherein said film has a surface resistivity at 23Â° C. and 65% RH ranging from 1Ã—108Ã—1Ã—1013 &OHgr;/&square; on at least one surface thereof.