| 摘要 |
PROBLEM TO BE SOLVED: To provide a hollow fiber membrane module having a smooth surface formed at the time of molding, which is easy to manufacture. SOLUTION: Since a mold not having a positioning part or connection part provided heretofore and molding the axial region of the whole periphery of a module case 2 can be demolded from a unidirectional opening end by providing a frame 3 surrounding hollow fiber membrane bundles 4 inside the module case 2, the cylindrical module case 2 has a uniform wall thickness for obtaining a smooth surface and the smooth surface is obtained at the time of molding to facilitate the production of the module case 2 and the external peripheral shape of the module case 2 can be made circular to enable the effective utilization of a space.
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