| 摘要 |
A profiled fine-fiber filament yarn of polyamide POY with a yarn viscosity RV of 40 to 55 and a strength of 30 to 45 cN/tex, with a fiber titer of less than 1.5 dtex, a color uniformity with a coefficient of variation of less than 2, and a width/length ratio B/L of the fiber cross section of 0.5 to 0.7 is provided as a feed yarn for texturing. In the production process, extrusion is carried out at a rate of 8 to 14 m/min through a nozzle with a capillary surface area of 0.05 to 0.1 mm2 per capillary and the solidified filaments are stretched to form a POY. |
