Four spinneret for the production of hollow polyester fibers and a method for manufacturing hollow fiber polyester fibers using the same

摘要

The present invention relates to a process for producing a modified polyester by reacting a modified polyester obtained by reacting 0.80 to 3.5% by weight of titanium dioxide with 0.2 to 8% by weight of an organic sulfonic acid metal salt represented by the following general formula (I) And having a cross-sectional shape shown in FIG. 1 and satisfying the following conditions: spinning using a spinneret for producing hollow fibers to obtain an unstretched yarn, stretching it, heat-treating it, weaving it, And a method for producing the hollow polyester fiber.;0.35 mm length (L) of the spinneret 0.50;1.75 mm Total diameter (R) of the spinneret 2.25;0.086 mm Internal slit width (A) of the spinneret 0.79;0.46 mm Outer circumferential slit width (B) of the spinneret 0.66; 0.79 mm C (C) 0.22;0.32 mm distance of detention space of outer circumference 0.38;RSO₃M . . . (I);(Wherein R is an alkyl group having 3 to 30 carbon atoms or an alkyl aryl group having 7 to 40 carbon atoms, and M is an alkaline earth metal such as Na, K, Li, Mg, or Ca).