| abstract |
Provided is a spunbond nonwoven fabric comprising a core-sheath composite fiber having: a core part comprising a core component containing a propylene-based resin (A) satisfying (a) to (e) below; and a sheath part comprising a sheath component containing an ethylene-based resin.n(a) [mmmm] = 20 to 60 mol%n(b) [mm] × [rr]/[mr] 2 ≤ 2.0n(c) Weight average molecular weight (Mw) = 10,000 to 200,000n(d) Molecular weight distribution (Mw/Mn) < 4.0n(e) The melting point (Tm - D), defined as the top of the peak observed, using a differential scanning calorimeter (DSC), furthest on the high-temperature side of a melting endothermic curve obtained by holding the resin for five minutes at -10ºC in a nitrogen atmosphere and then raising the temperature by 10ºC/minute, is 0 to 120ºC. |