Method for producing hollow fiber membrane sheet-like object, method for producing hollow fiber membrane module, and device for producing hollow fiber membrane sheet-like object

Patent metadata

Field	Value
Publication number	US-9283727-B2
Application number	US-201113823405-A
Country	US
Kind code	B2
Filing date	Sep 15, 2011
Priority date	Sep 16, 2010
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

The present invention relates to a method for producing a hollow fiber membrane sheet-like object including: a connecting process of forming a ring-shaped section by winding a hollow fiber membrane capable of being continuously supplied, around two or more rolls so as to surround the two or more rolls and connecting a leading end portion of the wound hollow fiber membrane and an adjacent hollow fiber membrane, or of putting a ring-shaped section created in advance, on two or more rolls, and connecting a leading end portion of a hollow fiber membrane capable of being continuously supplied, to the ring-shaped section; a winding process of winding the hollow fiber membrane around the rolls by moving the leading end portion of the hollow fiber membrane by rotating at least one roll of the two or more rolls; a fixing process of forming a fixed section by fixing the hollow fiber membrane wound around the two or more rolls, into the form of a sheet in a width direction; and a cutting process of performing cutting-out along the fixed section, thereby obtaining a sheet-like object to which end portions of the hollow fiber membranes are connected in the width direction. According to the present invention, a hollow fiber membrane sheet-like object can be produced with a simple configuration and a change in sheet length can be easily performed.

First claim

The invention claimed is:

1. A method for producing a hollow fiber membrane sheet object, the method comprising:
(I) forming a ring-shaped section by winding a hollow fiber membrane capable of being continuously supplied, around two or more rolls so as to surround the two or more rolls, to obtain a wound hollow fiber membrane, and connecting a leading end portion of the wound hollow fiber membrane and an adjacent hollow fiber membrane, or
putting a ring-shaped section created in advance, on two or more rolls, and connecting a leading end portion of a hollow fiber membrane capable of being continuously supplied, to the ring-shaped section;
(II) winding the hollow fiber membrane around the rolls by moving the leading end portion of the hollow fiber membrane by rotating at least one roll of the two or more rolls;
(III) forming a fixed section by fixing the hollow fiber membrane wound around the two or more rolls, into the form of a sheet in a width direction; and
(IV) performing cutting-out along the fixed section, thereby obtaining a sheet object in which end portions of the hollow fiber membranes are connected in the width direction.

2. The method of claim 1 , wherein in the winding (II), the leading end portion is wound around outer peripheries of the rolls while changing a relative position of the leading end portion on the rolls in a roll width direction for each round.

3. The method of claim 2 , wherein in the winding (II), the leading end portion is moved without changing a relative position of the leading end portion with respect to the rolls while the leading end portion is in contact with the rolls.

4. The method of claim 1 , wherein axes of the two or more rolls surrounded by the hollow fiber membrane are disposed so as to be parallel to each other.

5. The method of claim 1 , wherein at least one roll of the two or more rolls comprises circumferential grooves over approximately an entire area in the width direction.

6. The method of claim 5 , wherein pitches of the grooves are the same pitch.

7. The method of claim 1 , wherein the two or more rolls are disposed in a vertical direction.

8. The method of claim 1 , further comprising after (III) and before (IV):
adjusting a winding peripheral length.

9. A method for producing a hollow fiber membrane module, the method comprising:
fixing an end portion on at least one side of the hollow fiber membrane sheet object obtained by the method according to claim 1 to a housing with a potting resin.

10. A device, comprising:
two or more rolls;
a supplier, which continuously supplies a hollow fiber membrane to the two or more rolls;
a connector, which forms a ring-shaped section by winding the hollow fiber membrane capable of being continuously supplied, around the two or more rolls so as to surround the two or more rolls and connects a leading end portion of the wound hollow fiber membrane and an adjacent hollow fiber membrane, or puts a ring-shaped section created in advance, on the two or more rolls, and connects a leading end portion of the hollow fiber membrane capable of being continuously supplied, to the ring-shaped section;
a driver, which rotates at least one roll of the two or more rolls, thereby winding the hollow fiber membrane around the two or more rolls; and
a fixer, which fixes the hollow fiber membranes into the form of a sheet in a width direction of each of the two or more rolls.

11. The device of claim 10 , further comprising:
a cutter, which cuts a fixed section formed by the fixer to cut out the plurality of hollow fiber membranes at the fixed section.

12. The device of claim 10 , wherein axes of the two or more rolls surrounded by the hollow fiber membrane are disposed so as to be parallel to each other.

13. The device of claim 10 , wherein at least one roll of the two or more rolls comprises circumferential grooves over approximately an entire area in the width direction.

14. The device of claim 13 , wherein pitches of the grooves are the same pitch.

15. The device of claim 13 , wherein grooves comprised in one of the two or more rolls and grooves comprised in the other rolls are parallel.

16. The device of claim 10 , wherein the two or more rolls are disposed in a vertical direction.

17. The device of claim 10 , wherein the supplier is a bobbin unwinding device.

18. The device of claim 10 , further comprising:
an adjuster, which adjusts a winding peripheral length.

Assignees

• Hattori Kiyoshi
• Ideguchi Makoto
• Ueno Nobuyasu
• Suzuki Satoshi
• Nakahara Yoshihito
• Tsujimura Taro
• Mitsubishi Rayon Co

Inventors

• Hattori Kiyoshi
• Ideguchi Makoto
• Ueno Nobuyasu
• Suzuki Satoshi
• Nakahara Yoshihito
• Tsujimura Taro

Classifications

• D06H7/00 Primary

  Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials {(web delivery apparatus incorporating cutting devices B65H35/0006)} · CPC title

• B01D69/087

  Details relating to the spinning process · CPC title

• B01D2323/42

  Details of membrane preparation apparatus · CPC title

• B31C3/00 Primary

  Making tubes or pipes by feeding obliquely to the winding mandrel centre line · CPC title

• B01D69/08

  Hollow fibre membranes (manufacture of hollow fibres D01D5/24, D01F1/08) · CPC title