Melt-spinning method using a composite spinneret device and the device

摘要

PROBLEM TO BE SOLVED: To provide a bi-component fiber-spinning spinneret device which can stably spin bi-component fibers having an excellent latent crimp-developing property and comprising polymers having a large melt viscosity difference therebetween for a long time.;SOLUTION: This bi-component fiber-spinning spinneret device (10) having many nozzles (2) for together extruding the two polymers (A, B) is characterized in that the two polymers (A, B) having different viscosities are respectively extruded from the nozzles (2), so that the lamination surfaces (4) of the polymers are formed in a constant direction and that dent grooves which are extended in a direction non-parallel to the lamination surfaces of the two polymers (A, B) and whose at least one ends communicate with a mold release liquid- supplying portion.;COPYRIGHT: (C)2004,JPO