| 摘要 |
PURPOSE:To obtain polyester-based synthetic fiber excellent in visual dyeing concentration in dyeing, water retention, water releasing properties, water-vapor absorption and a dry feeling in all points. CONSTITUTION:This polyester-based synthetic fiber comprises a fiber surface part which has a large number of striped traces parallel with the direction of a fiber axis in a specific plane distance on the surface of the fiber is composed of a blended polymer of a copolymer of a polyethylene terephthalate and a polyethylene glycol and a polyethylene terephthalate. A method for producing the polyester-based synthetic fiber comprises specifying the blending ratio of the copolymer having a specific polyethylene glycol content and the polyethylene terephthalate to be mixed with the copolymer. |
