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 the fiber in a side-by-side arrangement,
• (ii) the 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) the 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
• the interface line, contained in the 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 the imaginary straight baseline connecting the two endpoints of the curved interface line, and the bow height (h) is the distance of the crest of the curved interface line from the baseline.