POLYOLEFINIC HEAT SHRINKABLE LABEL

摘要

PROBLEM TO BE SOLVED: To obtain a polyolefinic heat shrinkable label having excellent low temperature shrinkability. SOLUTION: The base film of the polyolefinic heat shrinkable label provided with a printing layer on at least one surface of the base film comprises a front surface layer consisting of a non-crystalline cyclic polyolefinic polymer having a glass transition temperature (Tg) ranging from 60 to 150 deg.C and a central layer consisting of a propylene-base random copolymer obtained by copolymerization with a metallocene catalyst. The thermal shrinkage rate in a main orientation direction X when the base film is immersed for 10 seconds into hot water of 80 deg.C may preferably be 25 to 50%. The propylene-base random copolymer is preferably an ethylene-propylene-base random copolymer. The ratio of the ethylene component in the ethylene-propylene-base random copolymer may be 3 to 4.5 wt.% of the total amount of the monomer component of the copolymer.