| 摘要 |
A mixer for mixing liquid additive with polymer dope constituted by cellulose ester as polymer and solvent is provided. There is a mixing conduit for flow of the polymer dope. A supply conduit ejects liquid additive into the polymer dope in the mixing conduit. A rotor hub is positioned downstream from the supply conduit, contained in the mixing conduit rotatably about an axis directed in a flow direction of the polymer dope, and has a diameter decreasing end on an upstream side. A driving device with electromagnets rotates the rotor hub by electromagnetic induction through a chamber inside the mixing conduit. Furthermore, a support is disposed within the mixing conduit to extend transversely to the flow direction, for supporting the rotor hub rotatably. Flow openings are formed in the support, for passing the polymer dope in the flow direction about the rotor hub.
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