HEAT SHRINKABLE POLYOLEFIN FILM

摘要

PROBLEM TO BE SOLVED: To provide a heat shrinkable polyolefin film advantageous in productivity by enabling a formation of a cylindrical label by laminating polyolefin heat shrinkable film in a cylindrical stage by a solvent seal with excellent transparency and advantageous in recycling and capable of gravity separating a PET because of the specific gravity of the film being less than 1. SOLUTION: The heat shrinkable polyolefin film comprises at least three layers of both surface layers each constituted of a cyclic olefin copolymer resin having a glass transition temperature of 50 to 75 deg.C and an intermediate layer constituted of a resin composition containing a polyethylene copolymer resin as a main component. In this case, a total thickness of both the surface layers is 10 to 40% and a thickness of the intermediate layer is 60 to 90% with respect to the entire thickness of eth film. The film has a heat shrinkage factor of a main shrinkage direction when dipped in a glycerin bath at 100 deg.C for 30 s of 40% or more and a heat shrinkage factor of a direction perpendicular to the main shrinkage direction of 15% or less.