PROBLEM TO BE SOLVED: To provide a hollow fiber membrane module having a low-cost casing cylinder and capable of: simplifying a mold structure to mold a casing tube constituted to have a process liquid inlet port, a process liquid outlet port, a cylindrical trunk and an expanded end part, so that the formed part taking number can be increased and being assembled in a sealing property retaining state without any annular elastic body.SOLUTION: A casing tube is separated into a cylindrical trunk and an expanded end part having a process liquid port, and the expanded end part is equipped with a fiber bundle guide part, and the cylindrical trunk and the expanded end part are fluid-tightly jointed to constitute a hollow fiber membrane module. Means to be used for joining the cylindrical trunk, the expanded end part and a header member fluid-tight is exemplified by thermal deposition means such as supersonic thermal deposition means.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】処理液入口ポートや処理液出口ポート、筒状の胴部、拡径端部から構成されるケーシング筒を成形するための金型構造を簡略化し、射出成形金型における成形品取り数を増やすことができ、環状弾性体が無くともシール性を確保した状態で組み立てられる、低コストなケーシング筒を備えた中空糸膜モジュールを提供する。【解決手段】ケーシング筒を筒状の胴部と処理液ポートを備えた拡径端部に分離し、拡径端部には糸束ガイド部を備えておき、筒状の胴部品と、拡径端部品とを液密に接合して中空糸膜モジュールを構成する。筒状の胴部品や拡径端部品、ヘッダー部材など液密に接合する手段としては、超音波溶着等の熱溶着手段を用いる。【選択図】 図1
