Ion exchange membrane and filter module using same

Patent metadata

Field	Value
Publication number	US-11014050-B2
Application number	US-201916429428-A
Country	US
Kind code	B2
Filing date	Jun 3, 2019
Priority date	Nov 12, 2013
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

Provided is a method of forming a filter module. The method includes: forming a non-pore ion-exchange membrane including: preparing a mixed solution of a polymer material and an ion-exchange material; and electrospraying the mixed solution to obtain the non-pore ion-exchange membrane; and interposing the non-pore ion-exchange membrane between a first polymer nanofiber web and a second polymer nanofiber web to form the filter module.

First claim

What is claimed are:

1. A method of forming a filter module, the method comprising:
forming a non-pore ion-exchange membrane comprising:
preparing a mixed solution of a polymer material and an ion-exchange material; and
electrospraying the mixed solution to obtain the non-pore ion-exchange membrane; and
interposing the non-pore ion-exchange membrane between a first polymer nanofiber web and a second polymer nanofiber web to form the filter module.

2. The method of claim 1 , wherein the ion-exchange solution comprises a negative ion exchanger.

3. The method of claim 1 , wherein the ion-exchange solution comprises a positive ion exchanger.

4. The method of claim 1 , further comprising: spirally winding the filter module.

5. The method of claim 1 , further comprising: shaping the filter module into a tubular body with a throughhole therein and pleats on a side wall of the throughhole and an outer circumferential surface of the tubular body.

6. The method of claim 5 , wherein the shaping of the filter module comprises: forming a plurality of grooves in the side wall of the throughhole.

7. The method of claim 6 , wherein the forming of the plurality of grooves comprises: forming in at least one pattern shape selected from among a straight linear pattern, a curved pattern, a mixed pattern of the straight linear pattern and the curved pattern, a polygonal pattern, a grid-like pattern, a dot-like pattern, a rhombic pattern, a parallelogram pattern, a mesh-like pattern, a striped-like pattern, a cross pattern, a radial pattern, a circular pattern, and a mixed pattern of a plurality of patterns selected from among the straight linear pattern, the curved pattern, the mixed pattern of the straight linear pattern and the curved pattern, the polygonal pattern, the grid-like pattern, the dot-like pattern, the rhombic pattern, the parallelogram pattern, the mesh-like pattern, the striped-like pattern, the cross pattern, the radial pattern, and the circular pattern.

8. The method of claim 1 , further comprising: laminating the filter module to form a laminated filter module.

9. The method of claim 8 , further comprising: spirally winding the laminated filter module.

10. The method of claim 8 , further comprising: shaping the laminated filter module into a tubular body with a throughhole therein and pleats on a side wall of the throughhole and an outer circumferential surface of the tubular body.

11. The method of claim 10 , wherein the shaping of the laminated filter module comprises: forming a plurality of grooves in the side wall of the throughhole.

12. The method of claim 11 , wherein the forming of the plurality of grooves comprises: forming in at least one pattern shape selected from among a straight linear pattern, a curved pattern, a mixed pattern of the straight linear pattern and the curved pattern, a polygonal pattern, a grid-like pattern, a dot-like pattern, a rhombic pattern, a parallelogram pattern, a mesh-like pattern, a striped-like pattern, a cross pattern, a radial pattern, a circular pattern, and a mixed pattern of a plurality of patterns selected from among the straight linear pattern, the curved pattern, the mixed pattern of the straight linear pattern and the curved pattern, the polygonal pattern, the grid-like pattern, the dot-like pattern, the rhombic pattern, the parallelogram pattern, the mesh-like pattern, the striped-like pattern, the cross pattern, the radial pattern, and the circular pattern.

Assignees

• Amogreentech Co Ltd

Inventors

• Seo In Yong
• Hwang Jun Sik

Classifications

• B01D63/10

  Spiral-wound membrane modules · CPC title

• B01J47/12

  characterised by the use of ion-exchange material in the form of ribbons, filaments, fibres or sheets, e.g. membranes (electrodialysis or electro-osmosis B01D61/42) · CPC title

• B01D69/02

  characterised by their properties · CPC title

• D01D5/003

  the material being a polymer solution or dispersion (D01D5/0053 takes precedence) · CPC title

• D04H1/728

  by electro-spinning {(electro-spinning methods and apparatus D01D5/0007)} · CPC title