Separation module and bundle unit of hollow thread-type porous m

Details Separation module and bundle unit of hollow thread-type porous m Separation module and bundle unit of hollow thread-type porous m

1994-09-01

1996-12-17

Fortuna, Ana

Liquid purification or separation

Casing divided by membrane into sections having inlet

Each section having inlet

21032188, 21032189, 2104971, 264DIG48, 96 10, 96 11, B01D 6300

Patent

active

055849970

ABSTRACT:
A separation module to be used for separation and filtration of micro-substances. The separation module comprises a bundled configuration of a plurality of hollow thread-type porous membrane elements made of high polymer material. The bundled configuration is sealingly disposed in a casing, in which the thread-type porous membrane elements are bound each other by means of molten thermoplastic resin. Such a separation module is produced by arranging the hollow thread-type porous membrane elements in a planar state; putting at least one of opposite end sections of the planar state porous membrane elements between first and second elongate thermoplastic resin films to form a sheet-like configuration; heating the sheet-like configuration to weld the films to each other and/or to the porous membrane elements; rolling up the welded sheet-like configuration in a longitudinal direction of the first and second thermoplastic films to form a rolled-up configuration in which two layers of the porous membrane elements are spirally wound, each layer being planar and including the parallelly arranged porous membrane elements; inserting the rolled-up configuration into the casing; and melting the first and second thermoplastic resin films to bind the end sections of the porous membrane elements to each other and to an inner wall of the casing.

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patent: 5228991 (1993-07-01), Strohmet et al.
patent: 5286324 (1994-02-01), Kawai et al.
patent: 5380433 (1995-01-01), Etienne et al.

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