Resin composition for shrink film, container fitted with shrink film and shrink film

摘要

PROBLEM TO BE SOLVED: To provide a resin composition for a shrink film which contains a block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene and can provide a molded product such as a shrink film having excellent low temperature ductility.SOLUTION: A resin composition for a shrink film contains three kinds of block copolymers of a vinyl aromatic hydrocarbon and a conjugated diene respectively defined by specific structures. A shrink film which is not only excellent in heat shrinkability, spontaneous shrinkage resistance (dimensional stability at room temperature), rigidity, strength, and transparency but also excellent in ductility at low temperature assuming the inside of a refrigerator can be produced by using a resin composition for a shrink film where the mass ratios of the three kinds of block copolymers are 30-40 mass%, respectively, and the content ratio of the conjugated diene in the entire composition satisfies 14.6-22.1 mass%.SELECTED DRAWING: None