Crimped conjugated fiber and nonwoven fabric comprising the same

A crimped conjugated fiber having a cross-sectional configuration wherein:

• a cross section of the fiber comprises at least a portion (a) and a portion (b),
• the mass ratio of the portion (a) and the portion (b) [(a):(b)] is in the range of 10:90 to 55:45,
• the portion (a) comprises a propylene polymer (A) and the portion (b) comprises a propylene polymer (B),
• the propylene polymer (A) has Mz/Mw (A) and the propylene polymer (B) has Mz/Mw (B) wherein the difference thereof [Mz/Mw (A)−Mz/Mw (B):
• ΔMz/Mw] is in the range of 0.30 to 2.2,
• the propylene polymer (A) has a melting point [Tm (A)] and the propylene polymer (B) has a melting point [Tm (B)] wherein the absolute value of the difference of the melting points is in the range of 0 to 5° C., and
• the ratio of MFR (A) of the propylene polymer (A) to MFR (B) of the propylene polymer (B) is in the range of 0.8 to 1.2.