Support for separation membrane, and method for production thereof

A manufacturing method and separation membrane technology, which are applied in chemical instruments and methods, semi-permeable membrane separation, textiles and papermaking, etc., can solve the problems of defects, uneven membranes, and high manufacturing costs, and achieve suppression of deformation, excellent uniformity, The effect of high water production
CN101765456AActive Publication Date: 2010-06-30TORAY IND INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TORAY IND INC
Publication Date
2010-06-30

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Abstract

Disclosed is a support for a separation membrane, which exhibits an excellent film-forming property and excellent mechanical strength when used for supporting a separation membrane such as a microfiltration membrane, an ultrafiltration membrane, a nanofiltration membrane and a reverse osmotic membrane. Also disclosed are a separation membrane and a fluid separation element each utilizing the support. Specifically disclosed is a support for a separation membrane, which comprises a long-fiber nonwoven fabric composed of a thermoplastic continuous filament. The thermoplastic continuous filament is preferably a complex-type filament comprising a high-melting-point polymer and a low-melting-point polymer having a melting point lower by 10 to 140 DEG C than that of the high-melting-point polymer and arranged around the high-melting-point polymer.
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Description

technical field

[0001] The present invention relates to a separation membrane support made of long-fiber non-woven fabric for supporting separation membranes such as microfiltration membranes, ultrafiltration membranes, nanofiltration membranes, and reverse osmosis membranes, and a manufacturing method thereof, wherein the long fiber Fibrous nonwovens are composed of thermoplastic continuous filaments. In addition, the present invention also relates to a separation membrane and a fluid separation element using the separation membrane support. Background technique

[0002] In recent years membrane technology has been used in many cases for water treatment. For example, microfiltration membranes and ultrafiltration membranes have been used for water treatment in water purification plants, and reverse osmosis membranes have been used for desalination of seawater. In addition, reverse osmosis membranes and nanofiltration membranes have been used for the treatment of semiconduc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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