Composite Spinneret And Method Of Manufacturing Composite Fiber

Abstract: Provided is a composite spinneret with which a polymer interface between polymers of different components can be gradually formed and high dimensional stability of the interface form can be maintained. This composite spinneret discharges a composite polymer fluid constituted of a polymer of two or more components. The composite spinneret has a bottom layer distribution plate in which there are formed a plurality of first discharge holes for discharging a first polymer component, and a plurality of second discharge holes for discharging a second polymer component different from the first polymer component. All the first discharge holes and second discharge holes that meet condition 1 satisfy condition 2. Condition 1: The first discharge holes and the second discharge holes are located at an interface between the first polymer component and the second polymer component, within a range such as a straight line. Condition 2: Any first discharge hole is denoted as a discharge hole 1a, the first discharge hole closest to the discharge hole 1a is denoted as a discharge hole 1b, the second discharge hole closest to the discharge hole 1a is denoted as a discharge hole 4b, and the second discharge hole closest to the discharge hole B is denoted as a discharge hole 4c. The distances between these discharge holes are predetermined distances.

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