| 摘要 |
PROBLEM TO BE SOLVED: To obtain fiber by incorporating the original fiber with tourmaline powder and ceramic powder higher in dielectric constant than the tourmaline powder in an amount greater than that of the tourmaline powder so as to afford far-infrared radiative effect as well as voltage effect owing to the tourmaline powder. SOLUTION: This fiber is obtained by incorporating the original fiber 11 (e.g. viscose rayon) with tourmaline powder 12 and ceramic powder 13 higher in dielectric constant than the tourmaline powder (e.g. mullite) in an amount greater than that of the tourmaline powder. Specifically, tourmaline and a ceramic are repeatedly subjected to wet grinding process respectively, thereby being ground to a particle size of <=2μm, and the resultant powders are incorporated and dispersed in e.g. viscose and the resultant dope is then spun. When the weight ratio of the tourmaline to mullite is (5:95) to (25:75), especially strong far-infrared radiation effect can be afforded.
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