HOLLOW FIBER MEMBRANE AND ITS MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide a hollow fiber membrane which uses a high chemical resistant polyfluorovinylidene resin, and has high strength-elongation capacity and high pure water permeability. SOLUTION: The polyfluorovinylidene resin is dissolved in a solvent to obtain a polyfluorovinylidene re...

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Bibliographische Detailangaben
Hauptverfasser:	HANAKAWA MASAYUKI, MINEGISHI SHINICHI, MINAKI TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION SPINNING TEXTILES TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a hollow fiber membrane which uses a high chemical resistant polyfluorovinylidene resin, and has high strength-elongation capacity and high pure water permeability. SOLUTION: The polyfluorovinylidene resin is dissolved in a solvent to obtain a polyfluorovinylidene resin solution. When the hollow fiber membrane having a fibrous structure oriented in the lengthwise direction of the hollow fiber membrane is manufactured by discharging the polyfluorovinylidene resin solution from a pipe sleeve into cooling liquid to cool and solidify it, the polyfluorovinylidene resin solution is held under a pressure of 0.5 MPa or higher, and at a temperature of (Tc+35°C) to (Tc+60°C) for 10 seconds or longer in a liquid supply line before the discharge from the pipe sleeve. COPYRIGHT: (C)2007,JPO&INPIT