POLYPROPYLENE RESIN COMPOSITION AND ORIENTED FILM THEREOF

A polypropylene resin composition comprising a propylene polymer obtained by, in a first stage, polymerizing monomers mainly containing propylene to produce a crystalline propylene polymer component (A) having an intrinsic viscosity of not less than 3.0 dl/g and less than 5.0 dl/g, and, in a stage after the first stage, polymerizing monomers mainly containing propylene to produce a crystalline propylene polymer component (B) having an intrinsic viscosity of not less than 1.5 dl/g and less than 2.5 dl/g, wherein the content of the crystalline propylene polymer component (A) in the propylene polymer is not less than 1% by weight and less than 10% by weight, the polypropylene resin composition having a melt flow rate, as measured at a temperature of 230° C. and under a load of 21.18 N, of not less than 1.0 g/10 min and less than 10 g/10 min.