Patent ID: 9663876
Date: 2017-05-30
CPC Classifications: D01D,D01F,D02G

Claim:
1. A sea-island composite fiber comprising two or more kinds of island components having different cross section shapes of which an irregularity difference is 0.2 or more in a same fiber cross section, wherein 1) first island components (A) having an irregularity of 1.2 to 5.0, an irregularity coefficient of variation of 1.0 to 10.0% and an island component diameter of 10 to 1,000 nm are disposed around a second island component (B) having an island component diameter of 1,000 to 4,000 nm, and 2) the second island components are fixed uniformly such that a coefficient of variation of intervals between centers of island components B is 1.0 to 20.0%.