| 摘要 |
PROBLEM TO BE SOLVED: To improve the opening easiness by using a propylene polymer composition comprising a specified propylene polymer and a spherical particle whose particle size distribution S value is lower than a specified value and laminating a polyolefin composition layer on one of the surfaces of the propylene polymer composition. SOLUTION: This laminated film comprises a propylene polymer composition of 100 pts.wt. of propylene polymer containing 90 mol.% or more of a propylene- based monomer unit and 0.01-0.5 pts.wt. of a spherical particle which has the 50% dia. represented in terms of volume integration distribution by the laser diffraction/scattering method as 0.5-4μm and the S value represented by the formula as 1.0 or less. In the formula, D10, 50, 90 are 10, 50, 90% dia. respectively. In addition, a polyolefin composition layer made up of 100 pts.wt. of an ethylene (propylene)-α-olefin random copolymer which has the contents of ethylene (and propylene) and the monomer unit ofα-olefin other than the ethylene (and the propylene totaling 50-90 and 10-50 mol.% respectively, is laminated on one of the faces of a stretched base material layer.
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