| 摘要 |
PROBLEM TO BE SOLVED: To provide a spinning nozzle pack which is used for producing a hollow fiber, can highly precisely filter a highly viscous melted polymer and can spin the melted polymer in a state scarcely having the unevenness of temperature. SOLUTION: This spinning nozzle pack (10) for producing the hollow fiber has a circular extrusion slit (25), a gas-discharging hole (24a) disposed at the center of the circular extrusion slit (25), a distribution plate (21) for distributing a polymer to the slit (25), a gas-introducing chamber (23) for introducing a gas into the gas-discharging hole (24a), and a gas-supplying route (22b) for supplying the gas into the gas-introducing chamber (23). A disk laminate type leaf disk filter (31) is disposed in just front of the distribution plate (21) in a state that the center of the leaf disk filter (31) is supported on a center pole (32). The center pole (32) has a post portion (32a) having a flow passage for the filtered polymer and a flange (32b) extended in one end of the post portion (32a). The outer side of the flange (32b) forms a part of the outer wall of the nozzle pack (10). The outer wall has a heater to heat the post portion (32a) through the flange portion (32b).
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