| 摘要 |
<p>A heat-shrinkable polyester film having a shrinkability in hot water (hereinafter referred to as a hot-water shrinkability) at 95 DEG 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 DELTA HS between the hot-water shrinkability in direction (A) and the hot-water shrinkability in direction (B) (i.e., DELTA HS = hot-water shrinkability in direction (A) - hot-water shrinkability in direction (B) ) is 10% or smaller, is useful as a wrapping material, mainly as a covering material for the openings of vessels used for packing noodles, puddings, salads, and other foods.</p> |
