| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging laminated film of an excellent low temperature impact property which can be applied to automatic packaging of frozen food, heavy material or the like. SOLUTION: In a packaging film wherein a propylene based polymer layer A of 160-165 deg.C fusion peak temperature by a differential scanning calorimeter, a first ethylene-αolefin copolymer layer B of 0.88-0.95 g/cm3 density, and a second ethylene-αolefin copolymer layer C of 0.88-0.92 g/cm3 density are simultaneously laminated in this order by a co-extrusion method, a 1% tangential modulus at 23 deg.C in accordance with ASTM D 882 is 300-500 MPa, and an impact strength at 0 deg.C by a film impact method is >=0.8 J. |
