Heat-shrinkable polyester film and preparation method thereof
AssigneeSkc Co., Ltd.
InventorsSeong-Do Kim, Taehoung Jeong, Tae-Byoung Oh
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Abstract
A heat-shrinkable polyester film having a thermal shrinkage ratio of 15% or more in the longitudinal direction when treated at 100° C. for 10 seconds, a tensile strength at rupture in the longitudinal direction of 7 kgf/mm2 or more, and a difference between elongations at the hardening and yield points in the longitudinal direction of 15% or more exhibits superior properties, such as high tensile strength and crack-resistance in the longitudinal direction, suitable for labeling or shrink-wrapping containers.
Claims10
A heat-shrinkable polyester film having a thermal shrinkage ratio of 15% or more in the longitudinal direction when treated at 100° C. for 10 seconds, a tensile strength at rupture in the longitudinal direction of 7 kgf/mm2 or more, and a difference between elongations (%) at the hardening and yield points in the longitudinal direction of 15% or more.
Dependencies are inferred from the claim text.