| abstract |
Disclosed is a porous film made of a resinncomposition containing (I) (i) a propylene-ethylenencopolymer or (ii) a polypropylene-based resin mixturencontaining a propylene-ethylene copolymer, each having annethylene content of 3.0 to 7.0 wt.% and an MFR measured atn230°C of 2.0 to 4.0 g/10 min and (II) a β-crystalnnucleating agent; the film having a porosity of 20 to 80%,na Gurley air permeability of 5,000 sec/100 cc or lower asnmeasured according to JIS P-8117, a water vapornpermeability of 2,000 g/m 2 ·24h or higher as measurednaccording to JIS Z-0208 and a water pressure resistance ofn75 kPa or higher as measured according to JIS L-1092 usingnan aqueous surfactant solution; a process for producingnthe same; and an absorbent article employing the porousnfilm as a backsheet. |