COMPOSITE SPINNERET AND METHOD FOR PRODUCING CONJUGATED FIBER

PROBLEM TO BE SOLVED: To provide a composite spinneret which, when a sea-island type conjugated fiber is produced, can prevent island component polymers from merging with each other while increasing hole packing density of extrusion holes of the island component polymers, and can maintain the dimensional stability of the cross-sectional shapes at a high level.SOLUTION: A composite spinneret is used for extruding a composite polymer stream composed of an island component polymer and a sea component polymer. The composite spinneret includes: at least one distribution plate in which distribution holes and distribution grooves for distributing each polymer component are formed; and a lowermost layer distribution plate located on the downstream side in the polymer spinning passage direction of the distribution plates, in which a plurality of island component extrusion holes and a plurality of sea component extrusion holes are formed. The composite spinneret comprises: n island component extrusion holes (n represents an integer of 3 or more, and the same applies hereinafter) arranged on a virtual circumferential line C1 of a radius R1 with a virtual center O as a center; n sea component extrusion holes arranged on a virtual circumferential line C2 of a radius R2 with the virtual center O as the center; and n virtual group centers P on a virtual circumferential line C3 of a radius R3 with virtual center O as a center.