| 摘要 |
PROBLEM TO BE SOLVED: To provide a low-temperature shrinkable film suitable particularly for a shrink film and sheet applications that is excellent in low-temperature processability and solvent resistance on printing with an oily ink, hardly suffers from deterioration in properties after contacted with the solvent, and exhibits excellent mechanical strengths and practical shrinkability. SOLUTION: The low-temperature shrinkable film is formed from a mixed composition mainly comprised of at least one copolymer component (a), which comprises 75-92 wt.% of a vinyl aromatic hydrocarbon and 25-8 wt.% of an alkyl 12-18C aliphatic unsaturated carboxylate and has a Vicat softening temperature of 55-88°C, and at least one copolymer component (b), which comprises at least one polymer block mainly composed of a vinyl aromatic hydrocarbon and at least one polymer block obtained by polymerizing mainly a conjugated diene derivative and contains 60-95 wt.% of the vinyl aromatic hydrocarbon and 40-5 wt.% of the conjugated diene derivative, with a mixed ratio by weight of 0.10≤a/(a+b)≤0.95, and has been stretched at least uniaxially. COPYRIGHT: (C)2007,JPO&INPIT |
