| 摘要 |
PROBLEM TO BE SOLVED: To provide a shrink film excellent in luster, mechanical strength and rigidity and extraordinarily excellent in inhibiting natural contraction. SOLUTION: This shrink film is produced by kneading a resin material, obtained through graft copolymerization of styrene, methacrylate and butylacrylate with styrene/butadiene block copolymer, in a molten state, followed by extrusion molding for forming film and by biaxial drawing, and then by heat setting treatment, and has an orientation degree of 1.5-5.0 MPa, according to ASTM D1504. |
