| abstract |
(57) [Summary] [Problem] To provide a film for heat-shrinkable packaging which is excellent in low-temperature heat-sealing property and is less likely to cause whitening on the film surface even after passing through a heat-shrinkable tunnel, which is suitable for high-speed automatic heat-shrinkable packaging. [Composition] Both outer layers have only one endothermic peak of melting point by differential thermal analysis (DSC), and have a number average molecular weight of 35. 000-80,000, weight average molecular weight / number average molecular weight = The ethylene-α-olefin copolymer of 1.8 to 3.8, wherein the core layer is made of a resin having a melting point higher than that of the ethylene-α-olefin copolymer of both outer layers. Film for heat shrink packaging. |