| 摘要 |
PROBLEM TO BE SOLVED: To provide a method capable of stably carrying out melt spinning of a fiber having good quality for a long period without generating unevenness of thickness between fibers produced when the fiber having small fineness and profiled section is melt-spun and to provide a spinneret pack therefor and to provide a spinneret pack which can relatively inexpensively and readily be prepared. SOLUTION: The melt-spinning method comprises providing a back pressure-producing member (6) in which a back pressure-producing hole (H1) is bored in accordance with each discharge hole one by one immediately above a spinneret (8) in which a discharge hole (H2) group for spinning a single fiber group having a profile cross section shape is bored to produce the back pressure, supplying a thermoplastic polymer through the back pressure-producing hole (H1) to each of the discharge hole (H2) and spinning the thermoplastic polymer from the discharge hole (H2) group, when carrying out melt spinning of a thermoplastic polymer by using the spinneret pack. The apparatus for carrying out the melt spinning method is also provided. COPYRIGHT: (C)2005,JPO&NCIPI
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