| 摘要 |
PROBLEM TO BE SOLVED: To provide inner wear excellent in opacity and light shielding properties by making titanium oxide uniformly scatter, exerting refreshing feeling such as dryness, cool feeling or dry feeling, and excellent in color development more than that of conventional one even though the cross-sectional surface of a fiber is not formed into an irregular shape without using compound fiber lacking in versatility where the girth or the number of filaments is not easily changed because of its expensive cost. SOLUTION: The polyamide fiber contains 3.0-6.5 % of titanium oxide and 0.01-1.0 % of a magnesium compound, and has 4.0×10<SP>-5</SP>-8.0×10<SP>-5</SP>mol/g. The polyamide fiber has the following structure: the titanium oxide is uniformly dispersed on the inside part and the surface of the polyamide fiber; a single yarn fiber of the polyamide fiber is 0.5-3.0 dtex; Young's modulus is 20-40 cN/dtex; and the coefficient of dynamic friction between yarns (μ) is 0.15-0.5. The inner wear is produced by using such polyamide fiber. COPYRIGHT: (C)2005,JPO&NCIPI
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