Use of polymer composition on making soft nonwoven fabrics

A process for producing crimped multicomponent fibers having a side-by-side cross-sectional configuration, the process comprising:

• providing a polymer composition comprising a first propylene polymer A and a second propylene polymer B;
• and
• forming the crimped multicomponent fibers having the side-by-side cross-sectional configuration from the polymer composition, wherein
• (i) the first propylene polymer A and second propylene polymer B are distributed over the cross section of a fiber in a side-by-side arrangement,
• (ii) a mass ratio of the first propylene polymer A and the second propylene polymer B [A:B] is in the range of 10:90 to 90:10,
• (iii) an absolute value of the difference of the crystallization temperature [Tc (A)] of the first propylene polymer A and the crystallization temperature [Tc (B)] of the second propylene polymer B determined according to ISO11357 with a scan rate of 10° C./min is in the range of 6 to 30° C., and
• an interface line, contained in a radial plane of the fibers, between the two propylene polymers (A) and (B) is curved and its curvature (c) is
• c
• =
• h
• b
• =
• 0.05
• to
• 0.25
• wherein the baseline length (b) is the length of an imaginary straight baseline connecting two endpoints of a curved interface line, and the bow height (h) is a distance of a crest of the curved interface line from a baseline.