| 摘要 |
PROBLEM TO BE SOLVED: To provide a latent crimpable easily dyeing polyester eccentric core-sheath composite fiber excellent in elasticity as an unwoven fabric, capable of being dyeing by a dispersion dye at a dyeing temperature of less than 100°C in a dyeing process after processing the unwoven fabric without generating wrinkle or colored dot and providing high quality unwoven fabric colored uniformly.SOLUTION: There is provided a latent crimpable easily dyeing polyester eccentric core-sheath composite fiber has an ordinary pressure dispersion dye dyeable polyethylene terephthalate (A) which is polyester of which a repeating component consists of ethylene terephthalate with a diol component having the number of carbon chains having a side chain of 3 of 5 to 10 mol% to the total diol component and the content of polyethylene glycol of 2 to 4 mass% as a sheath component and polyester (B) having intrinsic viscosity of 0.02 to 0.25 lower than that of the ordinary pressure dispersion dye dyeable polyethylene terephthalate (A) as a core component and eccentricity of the polyester (B) of 5 to 50%.SELECTED DRAWING: Figure 1 |
