Abstract: A laminate containing a propylene polymer as a main component, relating to a sealant film including a heat-seal layer and an adjacent layer, wherein the sealant film satisfies the following requirement (1) the sealant film is a stretched film or a non-stretched film; the heat-seal layer contains an olefin polymer (B) satisfying the following requirement (2): a melting point is less than 120° C. or is not observed; and a propylene polymer (A) satisfying the following requirement (3): a melting point is 121° C. or more and 170° C. or less; and the adjacent layer contains 1 to 70% by mass of the propylene polymer (A) satisfying the following requirement (3) and 30 to 99% by mass of the olefin polymer (B) satisfying the following requirement (2), and contains 0 to 70% by mass of a propylene polymer (B2) in the olefin polymer (B), provided that (A)+(B)=100% by mass.

Abstract: A propylene-ethylene-?-olefin copolymer satisfying: (I) a content of a propylene-derived constituent unit (i) is 50 to 92 mol %, a content of an ethylene-derived constituent unit (ii) is 5 to 20 mol %, and a content of a C4-20 ?-olefin-derived constituent unit (iii) is 3 to 30 mol %, provided that (i) to (iii) total 100 mol %; (II) an mm fraction calculated by 13C-NMR is 85% or more; (III) 0.9?MOE/(2MO×ME)?1.5 wherein MOE represents a mole fraction of chains of propylene and ethylene and chains of the C4-20 ?-olefin and ethylene in total to the total dyad, MO represents mole fractions of propylene and the C4-20 ?-olefin in total, and ME represents a mole fraction of ethylene; (IV) an MFR is 1 to 3 g/10 minutes; and (V) a melting point measured by DSC is less than 100° C., or no melting peak is observed.