Abstract: A method is provided for producing a resin composition including an olefin-based polymer; an inorganic filler; and a lubricant, in which the olefin-based polymer is at least one polymer selected from a propylene-based polymer and an ethylene-based polymer having a melt flow rate of 0.5 g/10 minutes or more measured at a temperature of 190° C. and a load of 2.16 kg. The method includes a step (1) of mixing the inorganic filler and a lubricant; a step (2) of mixing a mixture obtained in the step (1) and the olefin-based polymer; and a step (3) of kneading a mixture obtained in the step (2).

Abstract: Disclosed is a polypropylene resin composition which contains a polypropylene-based polymer containing, as monomer units, propylene and at least one copolymerization monomer of ethylene or ?-olefins with carbon atom number of 4 or more. Proportion of the monomer units derived from the copolymerization monomer in the polypropylene-based polymer is 2 to 10% by mass based on the mass of the polypropylene-based polymer. A crystallization half-time at 110° C. of the polypropylene resin composition is 20 seconds or shorter.

Abstract: Provided is a laminated film for easy material recycling and with excellent rigidity and thermal shrinkage resistance. The laminated film includes, in sequence, a layer A containing an ethylene polymer (A) containing 80 mol % or more of a structural unit derived from ethylene, a layer B containing an ethylene polymer (B) containing 70 mol % or more of a structural unit derived from ethylene and an inorganic filler, a layer C containing an ethylene polymer (C) containing 70 mol % or more of a structural unit derived from ethylene, at least one layer selected from the group consisting of a barrier layer and an adhesive layer, and a layer D containing an ethylene polymer (D) containing 70 mol % or more of a structural unit derived from ethylene.

Abstract: Disclosed is a polypropylene resin composition which contains a polypropylene-based polymer containing, as monomer units, propylene and at least one copolymerization monomer of ethylene or ?-olefins with carbon atom number of 4 or more. Proportion of the monomer units derived from the copolymerization monomer in the polypropylene-based polymer is 2 to 10% by mass based on the mass of the polypropylene-based polymer. A crystallization half-time at 110° C. of the polypropylene resin composition is 20 seconds or shorter.