| 摘要 |
PROBLEM TO BE SOLVED: To provide staple fibers which are used for nonwoven fabric, can prevent the formation of fiber masses by the generation of static electricity by frictions between the fibers-fibers and between the fibers-machines especially in a process for producing a dry nonwoven fabric without imparting a special treating agent to the surfaces of the fibers, and can give the nonwoven fabric having excellent uniformity, high quality and sufficient bulkiness. SOLUTION: The crimped staple fibers for the nonwoven fabric, comprising a polyester consisting mainly of alkylene terephthalate units, and having a fiber length of 1.0 to 30 mm, a single fiber fineness of 1.0 to 40 dtex, a birefringence of≤0.0150, and an elongation of≥250%, is characterized in that the height (H) to the bottom (L) (H/L) of a triangle formed by binding the mountain tip to two bottom points in the adjacent valleys at the largest mountain portion of a crimped portion in the crimped shape of a single fiber satisfies the following expression (1) : 0.01T+0.1≤H/L≤0.02T+0.25, wherein T is the decitex (dtex) of single fiber fineness. COPYRIGHT: (C)2006,JPO&NCIPI
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