SPINNERET OF THERMOPLASTIC MODIFIED CROSS-SECTION FIBER AND METHOD FOR PRODUCING THERMOPLASTIC MODIFIED CROSS-SECTION FIBER

摘要

PROBLEM TO BE SOLVED: To provide a spinneret for a thermoplastic modified cross-section fiber, which can stably produce a modified cross-section fiber, supplies a high-quality raw yarn having excellent Uster unevenness and slight face variation and provides a product having high qualities and high grades when a fabric is produced and a method for producing a thermoplastic modified cross-section fiber.;SOLUTION: In the spinneret for discharging a thermoplastic modified cross-section fiber by using a ring-shaped cooler that is arranged right under the spinneret for discharging a molten polymer and blows cooling air from outside ring-shaped directions with a discharging line as a center, the spinneret of a thermoplastic modified cross-section fiber has a constitution that the discharge holes of the spinneret all have modified shapes with slits and at least one slit of all the discharge holes having the modified shapes is arranged in parallel with and opposingly to cooling air blown from the ring-shaped cooler. The method for producing a thermoplastic modified cross-section fiber includes using the spinneret.;COPYRIGHT: (C)2009,JPO&INPIT