| 摘要 |
PROBLEM TO BE SOLVED: To obtain a napped structure rich in crispiness and natural feeling without causing color fading or whiteness by flocking a substrate with flocks, containing staple fibers having a large diameter and those having a small diameter and having a distribution of cross-sectional area different in the fiber axial direction. SOLUTION: This staple fiber flock for napping is obtained by crimping a polyester thick and thin filament yarn, providing a crimped yarn having <=10% shrinkage factor in boiling water, a change in thick parts and thin parts in the fiber axial direction and a distribution different in cross-sectional area and then cutting or pulverizing the resultant yarn. The prepared fiber flock comprises staple fibers 2 having a birefringence of 15×10<-3> to 80×10<-3> birefringenceΔn and a length within the range of 0.1-10mm and a large diameter of 0.13-1.5μm average diameter, staple fibers 3 having 90×10<-3> to 200×10<-3> birefringence and a small diameter of 0.1-1.3μm average diameter and staple fibers 4 having a distribution of cross-sectional area different in the fiber axial direction and the birefringence within the range between those of the staple fibers 2 and 3 and changing in the fiber axial direction. The staple fiber flock comprises >=20wt.% staple fibers, <=10wt.% staple fibers 4 and other staple fibers 3. A base fabric is flocked therewith to afford the napped structure.
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