| 摘要 |
PURPOSE:To obtain the titled fibers safely without causing mutual adhesion and broken yarns of an island component, by spinning the island and sea components through a spinneret for island-in-sea type conjugate fibers having plural tubular bodies for extruding the island component from the interior thereof and an annular channel for the sea component surrounding the island component at a specific flow velocity ratio. CONSTITUTION:Island-in-sea type conjugate fibers are spun by extrusion through extrusion holes 12 of a spinneret therefor of structure in which an island component (A) is introduced from introductory holes 5 into plural tubular bodies 7 and extruded into channels 10, and a sea component (B) is passed from introductory holes 15 through an annular channel 8 therefor and extruded surround respectively the island component (A). In the process, conditions are set to make the relation between the flow velocity (Y) of the island component (A) extruding from the tubular bodies 7 to the sea component (B) extruding from the annular channel 8 for the sea component (B) at a joining part 11 of both components (A) and (B) and the melt viscosity ratio (X) of the island component (A) to the sea component (B) satisfy formula I , preferably formula II. Thus, the aimed conjugate fibers are obtained.
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