COMPOSITE CRIMP FIBER, AND NON-WOVEN FABRIC COMPRISING THE FIBER

摘要

The present invention provides a crimped conjugated fiber having a crimpable cross-sectional configuration wherein a cross section of the fiber comprises at least two portions: a portion (a) and a portion (b); the portion (a) comprises a propylene polymer (A) and the portion (b) comprises a propylene/±-olefin random copolymer (B) ; the propylene polymer (A) has Mz/Mw(A) and the propylene/±-olefin random copolymer (B) has Mz/Mw (B) wherein the difference thereof is in the range of 0.10 to 2.2; and the propylene polymer (A) has a melting point [Tm(A)] and the propylene/±-olefin random copolymer (B) has a melting point [Tm(B)] wherein the difference thereof exceeds 10°C. The present invention also provides a non-woven fabric comprising the crimped conjugated fiber.