TWI435758B - A manufacturing method for a hollow fiber module for degassing - Google Patents

Description

Method for manufacturing hollow fiber module for exhaust gas

The present invention relates to a method for producing a hollow fiber module for exhaust gas which is used for a diaphragm-type exhaust gas by removing a gas, a bubble, or the like dissolved in a liquid from a side wall (film) of a hollow fiber.

The hollow fiber module for exhaust gas produced by the present invention can be used, for example, for oxygen venting water for boiler feed water, and for exhausting oxygen, carbon dioxide, nitrogen exhaust, etc. in the ultrapure water manufacturing step in the semiconductor manufacturing step. Protective liquid in the lithography step, venting of developing liquid, rust water exhaust in buildings or apartments, medical water exhaust, ink jet venting, defoaming, and the like.

In recent years, with the increase in the precision of ink jet printers, it has been eagerly expected to exhaust a hollow fiber module for exhausting and defoaming (removing bubbles in ink) from liquid such as inkjet. For example, in the following patent documents 1 and 2, the ink is passed through the inside of the hollow fiber, and the so-called internal perfusion type exhaust gas for evacuating the outside of the hollow fiber is hollow. Wire module.

In addition, the general exhaust gas is described in the following Patent Documents 3, 4, and 5, and the so-called external perfusion type in which the liquid is brought into contact with the outside of the hollow fiber to decompress the inside of the hollow fiber is removed. Gas has excellent properties. In the case of the external perfusion type, the hollow fiber module for exhaust gas is supplied while the ink containing the bubble can be brought into contact with the outer side of the hollow fiber, and the inside of the hollow fiber is sucked into a vacuum. The bubbles contained in the ink are permeable to the low pressure side by the pressure difference between the inside and outside of the hollow fiber. After being removed from the bubble The ink is discharged from the module without passing through the hollow fiber.

In the case of the exhaust of the ink jet, it is possible to use the external perfusion type from the point of exhaust efficiency and pressure loss per unit membrane area, which is more desirable than the internal perfusion type.

When the hollow fiber used in the present invention is a hollow fiber-shaped film that does not allow liquid to permeate through a gas, the raw material, the film shape, and the film form may be used arbitrarily, and the hollow fiber mold used for exhaust gas from the past may be used. Group of hollow wires. For example, examples of the raw material of the hollow fiber include a poly(chain) olefin resin such as polypropylene or poly(4-methylpentene-1), a fluorene resin such as a polyoxyalkylene or a copolymer thereof, and PTFE. A fluorine-based resin such as a fluorinated vinyl fork. As the shape of the side wall (film) of the hollow fiber, any of a porous membrane, a microporous membrane, and a homogeneous membrane (non-porous membrane) having no porous material can be used. As a film form, the chemical or physical structure of the film as a whole is a homogeneous symmetric film (homogeneous film), and the chemical or physical structure of the film is different from the asymmetric film (heterogeneous film) due to the portion of the film. Any one can be used. The asymmetric membrane, that is, the so-called heterogeneous membrane has a non-porous dense layer and a porous membrane, but the dense layer is a surface layer portion of the membrane, or as in the so-called porous membrane, it can be formed at any portion of the membrane. . Here, the heterogeneous film also includes a so-called composite film having a different chemical structure, and a multilayer structure film having a three-layer structure is also included. In particular, an inhomogeneous film using a poly(4-methylpentene-1) resin is particularly preferred because it has a dense layer that blocks liquid, and a liquid other than water, such as ink. Further, in the case of the external perfusion type hollow fiber, the dense layer is preferably formed on the outer surface of the hollow fiber.

A conventional hollow fiber module for exhaust gas, for example, in the following Patent Document 6, 7, 8 has a cylindrical core with a plurality of hollow filaments bundled around it. The cylindrical core system ensures the rigidity of the hollow fiber module for exhaust gas, and has the function of supporting a plurality of hollow fiber substrates in the manufacture of the module. Further, although it has a task as a liquid supply flow path for controlling the flow of the fluid, it also serves as one cause of the pressure loss.

Patent Document 1: Japanese Patent Laid-Open No. Hei 5-177172

Patent Document 2: Japanese Patent Laid-Open No. Hei 10-298470

Patent Document 3: Japanese Patent Laid-Open No. 2-107317

Patent Document 4: Japanese Patent Laid-Open No. Hei 5-245347

Patent Document 5: Japanese Patent Laid-Open No. Hei 5-245348

Patent Document 6: Japanese Patent Laid-Open No. 52-99978

Patent Document 7: Japanese Patent Laid-Open Publication No. 2002-361050

Patent Document 8: Japanese Patent Laid-Open Publication No. 2005-305432

Regarding the exhaust and defoaming of the ink jet printer described above, in particular, industrial printers are required to be placed inside a printer using a hollow fiber module for exhaust gas and exhausted during printing. In this case, the hollow fiber module for exhaust gas needs to be as small as possible and the pressure loss is small, and the hollow fiber module for exhaust gas tends to be downsized. However, since the cylindrical core has the function of ensuring the rigidity of the hollow fiber module for exhaust gas and the function as a support base for the hollow fiber, the pressure generated when the ink is introduced and then subjected to the exhaust and defoaming treatment is introduced. Loss becomes a big problem.

The present invention has been developed in view of the above facts, and aims to provide a A method for manufacturing a hollow fiber module for exhaust gas which can be easily and accurately manufactured by a hollow fiber module for exhaust gas which can greatly reduce the pressure loss and can meet the requirements for miniaturization.

A method for producing a hollow fiber module for exhaust gas according to the present invention, comprising: a winding step of surrounding a sheet containing a plurality of hollow fibers around a temporary core; and the sheet surrounding the temporary core a step of maintaining a cylindrical shape; and a step of removing the temporary core from the sheet held in a cylindrical shape.

According to the method for producing a hollow fiber module for exhaust gas according to the present invention, after a sheet containing a plurality of hollow fibers is wound around a temporary core and held in a tubular shape, the temporary core is removed from the sheet which is held in a cylindrical shape. Therefore, it is possible to satisfy the requirement of miniaturization as a core for securing rigidity and a support base of the hollow fiber, and to manufacture a hollow fiber module having a small pressure loss when the processed flow is passed, simply and with high precision. .

[Best Embodiment of the Invention]

An embodiment of a method of manufacturing a hollow fiber module for exhaust gas according to the present invention will be described.

In the method for producing a hollow fiber module for exhaust gas according to the present invention, a sheet containing a plurality of hollow fibers is wound around a temporary core and held in a tubular shape, and a resin is supplied to one end of the sheet held in a cylindrical shape. a step of mutually joining the plurality of hollow fibers at one end of the sheet, and sealing the holes of the hollow fibers opened at one end of the sheet, the resin may be hardened, The temporary core is removed from the sheet. Further, in the case of a sheet containing a plurality of hollow fibers, the hollow fiber can be woven into a mesh-like sheet. However, when a liquid such as ink is circulated, the entire hollow fiber can be uniformly contacted with the liquid, and the defoaming can be efficiently handled. Preferably, the plurality of hollow filaments are arranged in a substantially parallel sheet.

According to the method for producing a hollow fiber module for exhaust gas according to the present invention, before the temporary core is removed from the sheet-shaped sheet to be held, a resin is supplied to one end of the cylindrical sheet, and a plurality of hollow fibers are arranged in parallel with one end of the sheet. One ends are joined to each other while sealing the holes of the respective hollow fibers opened at one end of the sheet. Thereby, in the case where the entire plurality of hollow fibers are arranged in a substantially parallel sheet, a cylindrical hole can be formed in a central hole parallel to the longitudinal direction of the hollow fiber. The central hole of the sheet is secured by a hollow core module for exhaust gas, which is a core of a support base. However, the hollow fiber module for exhaust gas of the present invention can be simply provided without a core. Make sure the center hole.

In the method for manufacturing a hollow fiber module for exhaust gas according to the present invention, the resin may be provided at the other end of the sheet from which the temporary core is removed, and the other ends of the plurality of hollow fibers juxtaposed with the other end of the sheet may be joined to each other. At the same time, the step of filling the resin at the opening of the other end of the sheet.

According to the present invention, after the temporary core is removed from the sheet which is held in a cylindrical shape, the resin can be supplied to the other end of the cylindrical sheet, and the other ends of the plurality of hollow fibers juxtaposed with the other end of the sheet are joined to each other while being in the sheet The other end of the opening of the other end (the above-mentioned central hole) is filled with a resin. The other end of the central hole of the sheet, in the conventional hollow fiber module for exhaust gas, is sealed by the core as a support base, but in the exhaust gas of the present invention The empty wire module can simply close the other end of the central hole even if the core is not provided.

[Examples]

An embodiment of a method for producing a hollow fiber module for exhaust gas according to the present invention will be described with reference to the drawings.

First, the structure of the hollow fiber module for exhaust gas which does not hold a cylindrical core is shown in FIG. 1 and FIG. The coreless exhaust hollow fiber module 1 is formed by a bundle 3 of a plurality of hollow filaments and a structure 5 for accommodating the tow 3. As shown in Fig. 5, the tow 3 is a sheet 4 in which a plurality of hollow fibers 2 arranged in a row are woven by a filament 2b, and are wound into a circle centering on an axis parallel to the longitudinal direction of the plurality of hollow fibers 2. Cylindrical. On the other hand, in the center of the cross section orthogonal to the longitudinal direction of the tow 3, a center hole 3a parallel to the longitudinal direction of the hollow fiber 2 is provided.

As shown in Fig. 3, one end of the hollow fiber 2 which is juxtaposed with one end (lower end) of the tow 3 is joined to each other through a sealing resin (for example, an epoxy resin, a urethane resin, an ultraviolet curable resin, or the like) E1. The sealing resin E1 is also filled in the holes 2a of the respective hollow fibers 2 which are open at one end of the tow 3, and each of the holes 2a is sealed by the sealing resin E1 which is filled therein. However, the sealing resin E1 does not fill the opening on one end side of the center hole 3a.

As shown in Fig. 4, the other end of the hollow fiber 2 which is juxtaposed with the other end (upper end) of the tow 3 is joined to each other through a sealing resin (e.g., epoxy resin, urethane resin, ultraviolet curable resin, etc.) E2. . In the sealing resin E2, the holes 2a of the respective hollow fibers 2 opened at the other end of the tow 3 are not filled, and the respective holes 2a are opened. However, the sealing resin E2 is filled in the center hole 3a, the opening on the other end side of the center hole 3a is sealed by the filled sealing resin E2. That is, the center hole 3a is opened only at one end of the tow 3, and is closed at the other end of the tow 3.

As shown in FIGS. 1 and 2, the structure 5 is composed of a cylindrical frame body 5a, a first cover 5b which is next to one end (lower end) of the frame body 5a, and is then placed in the frame body 5a. The second cover 5c of the other end (upper end) is formed. In the frame body 5a, the ink discharge port 6 is formed in a direction orthogonal to the longitudinal direction of the frame body 5a.

At the outer circumferential surface of one end of the frame body 5a, a rounded portion 7 for fixing the first cover 5b is formed in the circumferential direction. On the other hand, when the first cover 5b is next to one end of the frame body 5a, the claws 8 that are locked at the rounded portion 7 are formed. The first cover 5b is fixed to one end of the frame body 5a by the claw 8 being locked to the rounded portion 7. Further, a filler-adhesive is also applied between the first cover 5b and one end of the frame body 5a.

At the outer circumferential surface of the other end of the frame body 5a, there is also a rounded portion 7 formed to fix the second cover 5c in the circumferential direction. On the other hand, in the second cover 5c, also at the other end of the frame body 5a, the claws 8 that are locked to the rounded portion 7 are formed. The second cover 5c is fixed to the other end of the frame body 5a by the claw 8 being locked to the rounded portion 7. Here, there is also a filler-imparting adhesive between the second cover 5c and the other end of the frame body 5a.

Further, in order to increase the fixing strength of the frame main body 5a and the first and second covers 5b and 5c, instead of the locking structure of the claw 8 and the rounded portion 7, a screwing structure of a male screw and a female screw may be employed.

In the center of the first cover 5b, for introducing ink (including air bubbles) The inlet port 9 of the hollow fiber module 1 for exhaust gas is formed in the longitudinal direction of the frame body 5a, and the hollow fiber module 1 for exhaust gas is sucked into the suction port 10 of the vacuum in the center of the second cover 5c. It is formed in the longitudinal direction of the structural body 5a.

When the defoaming by the hollow fiber module 1 for exhaust gas is briefly explained, as shown in Fig. 6, the ink containing the bubbles is guided into the frame 5 through the introduction port 9. The ink introduced into the frame 5 is supplied to the tow 3 through the center hole 3a, and is in contact with the outer side of each of the hollow fibers 2, and is discharged out of the frame 5 through the ink discharge port 6. While continuing to introduce the ink into the frame 5 and sucking the vacuum into the frame 5 through the suction port 10, the inside of each of the hollow wires 2 is decompressed by the holes 2a of the respective hollow fibers 2 opened at the other end of the tow 3. . Once the inner side of each hollow fiber 2 is depressurized, the ink and the gas contained in the ink move toward the inside of the hollow fiber having a low partial pressure. However, due to the presence of the hollow fiber, the ink itself does not move inside the hollow fiber, so only the gas moves inside the hollow fiber, and the gas can be removed from the ink. In addition, the task of the inlet port 9 and the discharge port 6 can be replaced without affecting the removal performance.

Next, the method of manufacturing the hollow fiber module 1 for exhaust gas having the above-described structure will be specifically described with reference to Figs. 7 to 15 .

(Cutting of hollow fiber sheets)

A hollow fiber 2 having an inner diameter of 100 μm and an outer diameter of 180 μm having a side wall (film) having an inhomogeneous structure using poly-4methylpentene-1 as a raw material is prepared, and a plurality of hollow fibers 2 juxtaposed in the same direction are woven by warp 2b. The hollow fiber sheet 4 (see Figs. 5 and 7) is cut to an appropriate size. Hollow wire The width of the sheet 4 (the dimension in the direction of the hollow fiber 2) is several times longer than the integral length of the length of the frame body 5a of the receiving tow 3, and the length of the hollow fiber sheet 4 (the dimension in the direction of the warp 2b) is cut. When the hollow fiber sheet 4 is stretched while being stretched by an appropriate tensile force and attached to a temporary core to be described later, the outer diameter of the original roll is made smaller than the inner diameter of the frame body 5a. Further, in the present embodiment, in order to obtain a unit roller by cutting the original roller into two, the width of the hollow fiber sheet 4 is made longer than twice the length of the frame body 5a, but the production of the original roller is omitted. When the unit roller is produced from the beginning, the width of the hollow fiber sheet 4 may be longer than the frame body 5a. In this case, the cutting step of the original roller to be described later may be omitted.

(winding of hollow fiber sheets)

A resin tube (temporary core) 11 having a longer width than the hollow fiber sheet 4 is prepared. Further, as shown in Fig. 7, the longitudinal direction of the resin tube 11 is made to coincide with the width direction of the hollow fiber sheet 4, and the end of the resin tube 11 is slightly left, and then the hollow fiber sheet 4 is stretched with an appropriate tensile force. One side is attached to the resin tube 11. Further, although the number of times of winding is only one time, from the practical point of view, the effective film area of the tow 3 in the frame body 5a (the total area of the surface of the hollow fiber 2 joined to the liquid) is 0.005 m. ² to 1.0 m ^{2 is} preferable, and particularly preferably 0.01 m ² to 0.5 m ^{2 is} more preferable. Further, as the filling ratio (the difference between the sectional area of the main body 5a and the area of the center hole 3a and the value of the sectional area of each hollow fiber 2 divided by a percentage), it becomes 5% to 50%. Good, if it is 10%~40% better, especially make it 20%~30% ideal.

(temporary fixing of hollow fiber sheets)

A temporary resin-made temporary fixing sheet 12 is prepared. Further, as shown in Fig. 8, the temporary fixing sheet 12 is wound and adhered to the outer periphery of the hollow fiber sheet 4 which is wound around the resin tube 11 without any clearance. When the temporary fixing sheet 12 is wound around the outer periphery of the hollow fiber sheet 4, the end of the temporary fixing sheet 12 is joined to the temporary fixing sheet 12 itself so that the hollow fiber sheet 4 does not separate from the resin tube 11. Thereafter, it is placed in a predetermined temperature environment for a prescribed period of time.

(cutting of the original roller)

The original roll of the hollow fiber sheet 4 is wound around the resin tube 11, and as shown in Fig. 9, the resin tube 11 is slightly shifted from the hollow fiber sheet 4, and then the hollow fiber sheet 4 is cut by a pipe cutter. At this time, the width of the hollow fiber sheet 4 is made longer than the frame body 5a of the receiving tow 3. The above-described cutting operation is repeated, and the hollow fiber sheet 4 is wound around the original roll of the resin tube 11 and cut into a plurality of unit rolls Ru. Thereafter, the resin tube 11 is slightly displaced from the hollow fiber sheet 4 with respect to the unit roller Ru cut into each, so that both ends of the resin tube 11 are slightly left from the hollow fiber sheet 4.

(the seal at one end of the tow)

After the release mold is applied to the stationary mold 13, an unhardened sealing resin (for example, urethane resin, epoxy resin, ultraviolet curable resin, or the like) E1 is injected into the recess 13a of the stationary mold 13. Next, as shown in Fig. 10, the shaft 14 standing upright on the stationary mold 13 is inserted into the hole of the resin pipe 11, and the unit roller Ru is erected on the stationary mold 13. The sealing resin E1 supplies one end of the unit roller Ru erected on the stationary mold 13. At this time, the sealing resin E1 is not attached to the temporary fixing sheet 12, and the temporary fixing sheet 12 is paired. The hollow fiber sheet 4 is moved upward.

As shown in Fig. 11, after the unit body 5a is erected on the unit roller Ru of the stationary mold 13, the temporary fixing sheet 12 is removed from the unit roller Ru for a predetermined period of time. During this period, the sealing resin E1 is hardened, and one ends of the plurality of hollow fibers 2 arranged at one end of the tow 3 around the resin tube 11 are joined to each other, and the holes 2a of the respective hollow fibers 2 opened at one end of the tow 3 will be Sealed (see Figure 3). Further, one end of the tow 3 is joined to the frame body 5a. At the other end of the frame body 5a, the step of centrifugal sealing to be described later is integrally formed to supply the sealing resin E2 to the other end cap 5d of the tow 3. This top cover 5d will eventually be cut off by the frame body 5a.

(Plastic tube removal)

After the sealing resin E1 is hardened, as shown in Fig. 12, the unit roller Ru fixed to the inside of the frame body 5a is removed by the stationary mold 13, and the resin tube 11 is taken out from the unit roller Ru. After the resin tube 11 is taken out, only the tow 3 is left inside the frame body 5a, and the center hole 3a is opened.

(the seal at the other end of the tow)

After the release sealer is applied to the centrifugal sealing mold 15, an unhardened sealing resin (for example, urethane resin, epoxy resin, ultraviolet curable resin, or the like) U is injected into the concave portion 15a of the centrifugal sealing mold 15. Next, as shown in Fig. 13, the frame body 5a accommodating the tow 3 is placed at the other end under the centrifugal sealing die 15. The sealing resin U is supplied to the other end of the tow 3 housed in the frame body 5a erected in the centrifugal sealing mold 15. Thereafter, the frame body 5a to be erected on the centrifugal seal mold 15 is placed for a predetermined period of time.

After the sealing resin U is hardened, as shown in Fig. 14, the frame body 5a to which the centrifugal sealing die 15 is joined is placed in a centrifugal sealing device. The centrifugal sealing device supplies the sealing resin (for example, urethane resin, epoxy resin, ultraviolet curable resin, etc.) E2 to the other end of the tow 3 through the top cover 5d formed on the frame body 5a, from the tow 3 One end is directed toward the other end (the direction of the arrow symbol F in the figure) to cause the centrifugal force to act for a predetermined period of time. The sealing resin E2 is hardened by being filled to the level of W in the drawing, and the other ends of the plurality of hollow fibers 2 juxtaposed with the other end of the tow 3 are joined to each other, and the central hole 3a opening at the other end of the tow 3 will be Sealed (see Figure 4).

(cutting of the top cover 5d)

When the sealing resin E2 is hardened, as shown in Fig. 15, the frame body 5a accommodating the tow 3 is cut, and the top cover 5d is cut out from the frame body 5a together with the centrifugal sealing die 15. Once the top cover 5d is cut, the hole 2a at the other end of each of the hollow fibers 2 at the other end of the tow 3 is opened (the central hole is still sealed by the sealing resin E2).

(installation of the cover)

One end of the frame body 5a is followed by the first cover 5b, and the other end is followed by the second cover 5c. If necessary, the first and second covers 5b, 5c and the frame body 5a are filled with an adhesive to reinforce. Through the above steps, the hollow fiber module 1 for exhaust gas shown in Figs. 1 to 6 is completed.

As described above, according to the method for manufacturing a hollow fiber module for exhaust gas according to the present embodiment, the sheet 4 including the plurality of hollow fibers 2 is wound around the temporary core resin tube 11 and held in a cylindrical shape, and is retained from the cylindrical shape. The hollow fiber sheet 4 removes the resin tube 11 and does not hold a support base for ensuring rigidity and hollow fiber The core of the body can be used to manufacture only the module of the hollow fiber 2 which has less pressure loss when the ink is circulated.

Further, in the method for producing a hollow fiber module for exhaust gas according to the present embodiment, the sealing resin E1 is supplied to one end of the cylindrical hollow fiber sheet 4 before the resin tube 11 is removed from the hollow fiber sheet 4 held by the cylindrical shape. One end of the plurality of hollow fibers 2 juxtaposed with one end of the hollow fiber sheet 4 is joined to each other while the holes 2a of the respective hollow fibers 2 opened at one end of the hollow fiber sheet 4 are sealed. Thereby, the cylindrical hollow fiber sheet 4 can form the center hole 3a parallel to the longitudinal direction of the hollow fiber 2. The central hole 3a of the hollow fiber sheet 4 is secured by a conventional hollow fiber module for exhaust gas, which is secured by a core of a support base, but does not have a hollow core module for exhaust gas of the present embodiment. 1. The central hole 3a can also be easily secured by the above method.

Further, in the method for producing a hollow fiber module for exhaust gas according to the present embodiment, after the resin tube 11 is removed from the hollow fiber sheet 4 held by the cylindrical shape, the sealing resin E2 is supplied to the other end of the cylindrical hollow fiber sheet 4. While the other ends of the plurality of hollow fibers 2 juxtaposed with the other end of the hollow fiber sheet 4 are joined to each other, the other end of the central hole 3a opened at the other end of the hollow fiber sheet 4 may be filled with the sealing resin E2. The other end of the center hole 3a of the hollow fiber sheet 4 is a hollow fiber module for exhaust gas which is closed by a core as a support base, but the hollow fiber for exhaust gas of the present embodiment which does not have a core The module 1 can also simply close the other end of the central hole 3a.

In the above embodiment, one end of the tow 3 is left to be hermetically sealed, and the other end is a centrifugal seal. However, the method of sealing is not required to be left standing or centrifuged. For example, one end of the unit roller may be centrifugally sealed, and the other end may be a static seal. Moreover, both ends of the unit roller can also be statically sealed, and both ends are centrifugally sealed.

Next, a modification of the above embodiment will be described.

(Modification 1)

In Modification 1, as shown in Fig. 16, a plurality of through holes 16 are formed in the wall of the resin tube 11. Then, the inside of the resin tube 11 is vacuumed, and the leading end of the hollow fiber sheet 4 is adsorbed to the resin tube 11 through the through hole 16. Thereby, the hollow fiber sheet 4 can be simply wound around the resin tube 11.

(Modification 2)

In the second modification, as shown in FIG. 17, a plurality of claws 17 are formed on one of the outer circumferential surfaces of the resin tube 11 in the circumferential direction. Further, after the hollow fiber sheet 4 is hooked on the claw, the resin tube 11 can be wound around the resin tube 11 in a rotating manner in the direction of the claw 17. After the winding is completed, the resin tube 11 is slowly pulled out from the hollow fiber sheet 4 so that the resin tube 11 can be rotated in the reverse direction. Thereby, the hollow fiber sheet 4 can be simply wound around the resin tube 11. Further, the claws 17 may also be a mechanism that mechanically enters and exits from the outer circumferential surface of the resin tube 11. When the hollow fiber sheet 4 is wound around the resin tube 11, the claw 17 is protruded from the outer circumferential surface of the resin tube 11 to hook the hollow fiber sheet 4, and when the resin tube 11 is taken out from the hollow fiber sheet 4, the claw 17 is put into the resin tube. In the case where the claws 17 do not interfere with the hollow fiber sheet 4, the resin tube 11 can be taken out, so that the hollow fiber sheet 4 is not injured.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. Additions, omissions, substitutions, and other changes may be made without departing from the scope of the invention.

[Industry use area]

The present invention relates to a method for producing a hollow fiber module for exhaust gas without a core, and relates to a method for producing a hollow fiber module for exhaust gas, comprising: a plurality of hollow fibers surrounding a temporary core; a step of laminating; holding the sheet around the temporary core in a cylindrical shape; and removing the temporary core from the sheet held in a cylindrical shape. According to the method for producing a hollow fiber module for exhaust gas according to the present invention, it is possible to satisfy the requirement of miniaturization by not holding a core as a support for securing rigidity and a hollow fiber, and to manufacture it in a simple and high-precision manner. A hollow fiber module for exhaust gas having a small pressure loss caused by the object to be treated.

1‧‧‧Hollow wire module

2‧‧‧Hollow wire

2a‧‧‧ hole

2b‧‧‧ warp (warp)

3‧‧‧Tow

3a‧‧‧Central hole

4‧‧‧ hollow filament sheet

5‧‧‧Architecture

5a‧‧‧Architecture ontology

5b, 5c‧‧‧ cover

5d‧‧‧Top cover

6‧‧‧Ink drain

7‧‧‧ round head

8‧‧‧ claw

9‧‧‧Ink inlet

10‧‧‧Inhalation

11‧‧‧ resin tube

12‧‧‧ Temporary fixed sheets

13‧‧‧Staying model

14‧‧‧Axis

15‧‧‧ centrifugal seal mold

E1, E2, U‧‧‧ sealing resin

Fig. 1 is a cross-sectional view showing an embodiment of a method for producing a hollow fiber module for exhaust gas according to the present invention, and a hollow fiber module for exhaust gas produced by the present invention.

Fig. 2 is a disassembled sectional view of the hollow fiber module for exhaust gas shown in Fig. 1.

Figure 3 is an enlarged cross-sectional view of the lower end of the tow shown in Figure 1.

Fig. 4 is an enlarged cross-sectional view showing the upper end of the tow shown in Fig. 1.

Fig. 5 is an enlarged perspective view showing the hollow fiber sheet which becomes the root of the tow shown in Fig. 1.

Fig. 6 is a schematic view for explaining the action of the hollow fiber module for exhaust gas shown in Fig. 1.

Fig. 7 is a view showing an embodiment of a method for producing a hollow fiber module for exhaust gas according to the present invention, in order to explain a step of attaching a sheet of a hollow fiber to a resin tube. Stereogram.

Fig. 8 is a view showing an embodiment of a method for producing a hollow fiber module for exhaust gas according to the present invention, in order to explain a perspective view of a temporary fixing step of temporarily fixing a sheet by a hollow fiber sheet.

Fig. 9 is a view showing an embodiment of a method for producing a hollow fiber module for exhaust gas according to the present invention, and a perspective view for explaining a step of cutting the original roller.

Fig. 10 is a view showing an embodiment of a method for producing a hollow fiber module for exhaust gas according to the present invention, and is a perspective view for explaining a step of static sealing at one end of the tow.

Fig. 11 is the same as Fig. 10, in order to explain a perspective view of the static sealing step at one end of the tow.

Fig. 12 is a view showing an embodiment of a method for producing a hollow fiber module for exhaust gas according to the present invention, and a perspective view for explaining a step of extracting a unit roll from a resin tube.

Fig. 13 is a view showing an embodiment of a method for producing a hollow fiber module for exhaust gas according to the present invention, and a perspective view for explaining a centrifugal sealing step at the other end of the tow.

Fig. 14 is the same as Fig. 13 for explaining a perspective view of the centrifugal sealing step at the other end of the tow.

Fig. 15 is a view showing an embodiment of a method of manufacturing a hollow fiber module for exhaust gas according to the present invention, in order to explain a perspective view of a step of cutting a top cover from a frame body.

Fig. 16 is a view showing a modification 1 of the method for producing a hollow fiber module for exhaust gas according to the present invention, in order to explain that the hollow fiber sheet is attached to the resin sheet. A perspective view of the steps.

Fig. 17 is a view showing a second modification of the method for producing a hollow fiber module for exhaust gas according to the present invention, and is a perspective view for explaining a step of attaching the hollow fiber sheet to the resin sheet.

3‧‧‧Tow

3a‧‧‧Central hole

5a‧‧‧Architecture ontology

5b, 5c‧‧‧ cover

6‧‧‧Ink drain

7‧‧‧ round head

8‧‧‧ claw

9‧‧‧Ink inlet

10‧‧‧Inhalation

E2‧‧‧ sealing resin

Claims (2)

A method for producing a hollow fiber module for exhaust gas, comprising: a winding step of winding a sheet containing a plurality of hollow fibers around a temporary core; and a holding step of winding around the temporary core The sheet is held in a cylindrical shape; the removing step removes the temporary core from the sheet held in a cylindrical shape; and supplies resin to one end of the sheet held in a cylindrical shape, which is juxtaposed with one end of the sheet One end of each of the plurality of hollow fibers is joined to each other while the holes of the respective hollow fibers opened at one end of the sheet are sealed, and after the resin is hardened, the temporary core is removed from the sheet. The method for producing a hollow fiber module for exhaust gas according to claim 1, wherein the resin is supplied to the other end of the sheet from which the temporary core is removed, and the plurality of strips are arranged in parallel with the other end of the sheet. The other end of the hollow fiber is joined to each other while the resin which is opened at the other end of the sheet is filled with the resin.