| abstract |
The present invention relates to a polypropylene comprising (I) an propylene-ethylene copolymer or (ii) a propylene-ethylene copolymer having (I) an ethylene content of 3.0 to 7.0 wt% and an MFR of 2.0 to 4.0 g / 10 min, measured at 230 ° C. A resin composition comprising a propylene-based resin mixture and (II) β tablet nucleating agent, having a porosity of 20 to 80%, a Gurley air permeability according to JIS P-8117 of 500O sec / 10Occ or less, and JIS Z-0208. Moisture permeability by 200Og / m 2 · 24 h or more, and a porous film having a water pressure of 75 kPa or more measured using an aqueous surfactant solution according to JIS L-1092, a method for producing the same, and an absorbent article having the film as a back sheet. It is about. |