Composite spinneret that produces multicomponent fibers

A composite spinneret that discharges a composite polymer composed of an island polymer and a sea polymer, the composite spinneret satisfying (1) and (2):

• (1) the composite spinneret comprises:
• a distribution device that distributes polymers;
• a nozzle plate situated on a downstream side of the distribution device in a polymer spinning passage direction and which has a plurality of sea discharge holes, and at least one kind of discharge holes selected from a plurality of island discharge holes and a plurality of composite polymer discharge holes;
• and
• a flow contraction plate situated on a downstream side of the nozzle plate in the polymer spinning passage direction and which has an introducting hole communicating with discharge holes in a combination of discharge holes selected from the combinations of:
• the sea discharge holes and the island discharge holes;
• the sea discharge holes and the composite polymer discharge holes;
• and
• the sea discharge holes, the island discharge holes and the composite polymer discharge holes;
• and
• (2) the nozzle plate has a nozzle hole collection including a plurality of discharge holes, and the nozzle hole collection includes a sea component region forming hole group including the sea discharge holes, and at least one sea-island discharge hole group including any of (i) to (v);
• (i) the sea discharge holes and the island discharge holes;
• (ii) the composite polymer discharge holes;
• (iii) the sea discharge holes and the composite polymer discharge holes;
• (iv) the island discharge holes and the composite polymer discharge holes;
• and
• (v) the sea discharge holes, the island discharge holes and the composite polymer discharge holes.