| abstract |
(57) [Abstract] [PROBLEMS] To provide a fiber or a fiber aggregate that is environmentally friendly and has a metallic luster with a high decorative effect. Means: An ionic group-containing copolyester resin, a pyridoneazo yellow oil-soluble dye, a water-soluble organic solvent, etc. are mixed, water is added, and then the solvent is removed to obtain a colored polyester aqueous dispersion. Then, the non-woven fabric vapor-deposited with aluminum is immersed in the dispersion and dried by heating to obtain a non-woven fabric having a metallic color tone. The obtained non-woven fabric shines in a bright golden color and has good touch and light resistance. Further, since a metal-containing complex dye is not used, it does not contain heavy metals such as chromium, and does not require solvent treatment equipment or the like in the manufacturing method. |