JPH10314553A - Hollow fiber membrane seatlike object, manufacture thereof and hollow fiber membrane module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hollow fiber membrane module having a high rate of permeation and a long filter life, wherein yarnlike substances and downlike substances are hardly tangled with the hollow fiber membrane, by arranging a large number of hollow fiber membranes in a seat state and connecting at least part of the neighboring hollow fiber membranes with each other at outer peripheral parts of the hollow fiber membranes. SOLUTION: When a hollow fiber membrane seatlike object (0) is formed, a large number of hollow fiber membranes 1 are disposed in a seatlike arrangement and at least parts of the neighboring hollow fiber membranes 1 are connected with each other at outer peripheral parts of the hollow fiber membranes. Such a hollow fiber membrane seat (0) is used to prepare a hollow fiber membrane seat module, and filtration treatment of highly polluted water is carried out. When this module is used, even if air scrubbing cleaning is simultaneously employed, yarnlike substances and downlike substances are prevented from being tangled between the hollow fiber membranes 1 so that a hollow fiber membrane module having a long filter life is obtained. A connection part of the hollow fiber membrane seat (0) has an area ratio of connection part area to overall outer peripheral part area of the hollow fiber membrane 1 set at 2-20%. The hollow fiber membrane 1 can be connected by heat-fusion or yarnlike adhesive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow fiber membrane sheet used for producing a hollow fiber membrane module for filtering suspended substances contained in highly polluted water such as river water, night soil, sewage and waste water. And a hollow fiber membrane module using the same.

[0002]

2. Description of the Related Art Conventionally, hollow fiber membrane modules and flat membrane modules have been widely used in the field of so-called microfiltration such as production of sterile water, drinking water and high-purity water, and purification of air. Consideration has been given to secondary and tertiary treatment in treatment plants, solid-liquid separation in septic tanks, direct filtration of river water in water purification plants, filtration of industrial tap water, filtration of pool water, etc. ing.

[0003] Hollow fiber membrane modules used in the field of highly polluted water filtration include, besides cylindrical hollow fiber membrane modules used in the field of conventional microfiltration,
Flat hollow fiber membrane modules in which hollow fiber membranes are arranged in a sheet shape (JP-A-5-220356, JP-A-6-7646, etc.) have come to be used.

When filtration of highly polluted water is performed using a hollow fiber membrane module of a cylindrical type, the surface area of the hollow fiber membrane decreases due to the adhesion of the suspended matter to the surface of the hollow fiber membrane, and the filtration flow rate sharply decreases. However, when performing suction filtration using a flat type hollow fiber membrane module, the filtration should be performed intermittently or continuously by performing air scrubbing cleaning because the hollow fiber membrane oscillates in highly polluted water. Thereby, the filtration treatment can be performed for a long time. In addition, the cleaning efficiency can be further improved by concurrently using the cleaning by the back pressure water passing as needed.

On the other hand, in a flat membrane module using a flat membrane as a filtration membrane, the flat membrane is attached with a flat supporting member (nonwoven fabric) having a water guide groove, or the flat membrane is formed into a bag. , And has a structure in which a support member is included, and is used while maintaining a filtering function by the air scrubbing cleaning described above.

[0006]

The flat hollow fiber membrane module has a feature that the membrane area can be increased as compared with the flat membrane module even with the same volume. However, in the case of the flat hollow fiber membrane module, the filaments and feathers contained in highly polluted water tend to be entangled with the hollow fiber membrane, and once these are entangled with the hollow fiber membrane, air scrubbing cleaning is performed. In addition, since it is difficult to separate the hollow fiber membrane from the hollow fiber membrane, the recovery of the filtration function may be reduced, and the hollow fiber membrane may be broken. Therefore, a pretreatment such as filter filtration and screen filtration for removing these from the highly polluted water has been necessary so that the thread or feather in the highly polluted water is not entangled with the hollow fiber membrane.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been made in view of such inconvenience, and has a higher permeation speed than a flat membrane module, and a thread-like material or a feather-like material is formed on a hollow fiber membrane. An object of the present invention is to develop a hollow fiber membrane module which is hardly entangled and has a long filtration life, and a hollow fiber membrane sheet for obtaining a hollow fiber membrane module.

That is, the gist of the present invention is that a large number of hollow fiber membranes are arranged in a sheet shape, and at least a part of adjacent hollow fiber membranes is joined at the outer periphery of the hollow fiber membrane. The characteristic feature is a hollow fiber membrane sheet. Assuming that the ratio of the area of the bonding portion to the entire area of the outer peripheral portion of the hollow fiber membrane is at least 2%, when a hollow fiber membrane module is prepared, and the filtration treatment of the contaminated water and the air scrubbing are performed, the filaments and the like are removed. This is preferable because it can be easily entangled with the filter and can be filtered at a high filtration flow rate.

The joints between the hollow fiber membranes may be joined by heat fusion. Further, the hollow fiber membranes may be joined by a thread-like adhesive. Preferably, the thread-like adhesive is a thread-like adhesive comprising an adhesive component and a support component for supporting the adhesive component, since the area of the film surface closed by the adhesive component is preferably small. When the thread-like adhesive has a core-sheath structure composed of a sheath portion made of an adhesive component and a thread-like core portion made of a support component, the adhesive strength between the hollow fiber membranes constituting the hollow fiber membrane sheet material Can be increased. The thread-like adhesive may have a sea-island structure including a sea portion made of an adhesive component and a thread-like island portion made of a support component.

[0010] It is preferable that at least one reinforcing member is arranged in the sheet-like material, because it is possible to perform unbiased cleaning when performing air scrubbing on the produced module. It is preferable to use a rod having higher rigidity than the hollow fiber membrane as the reinforcing member. Further, it is preferable that the hollow fiber membranes and / or the hollow fiber membrane and the reinforcing body are joined with a thread-like adhesive.

[0011] In the method for producing a hollow fiber membrane sheet according to the present invention, the side of the fed hollow fiber membrane is heated to a temperature not lower than the melting point of the constituent material of the hollow fiber membrane, and the side of the hollow fiber membrane is streaked. A hollow portion is formed, and then the hollow fiber membrane is inserted into a groove that is helically continuous and parallel densely formed in the circumferential direction of the surface of the cylindrical drum, and is formed between adjacent hollow fiber membranes. The fusion section is wound close to a cylindrical drum, the adjacent hollow fiber membranes are fused together at the fusion section and joined together, and the formed hollow fiber membrane array tubular body is cut open in parallel with the center axis of the drum. This is the gist.

In the hollow fiber membrane sheet of the present invention, an adhesive is applied to a side portion of the fed hollow fiber membrane in a streak shape in the longitudinal direction of the hollow fiber membrane. The cylinder is inserted into the grooves on the surface of the cylindrical drum with a spiral groove having a large number of grooves continuously and spirally formed in the circumferential direction, and the adhesive applying portions of the adjacent hollow fiber membranes are brought close to each other. The hollow fiber membranes are wound around a cylindrical drum, and adjacent hollow fiber membranes are joined together with an adhesive on the side of the hollow fiber membranes on the spiral grooved cylindrical drum, and the formed hollow fiber membrane cylindrical body is parallel to the center axis of the drum. The main point is to make a cut. The adhesive may be applied to the hollow fiber membrane by a transfer roll.

Further, in the method for producing a hollow fiber membrane sheet according to the present invention, a number of the hollow fiber membranes fed out are aligned in a parallel direction, and an adhesive is applied to the side of the hollow fiber membrane in the longitudinal direction of the hollow fiber membrane. And each hollow fiber membrane is inserted into each groove of a grooved cylindrical drum having a large number of grooves that are densely drilled in parallel in the circumferential direction. The gist of the invention is that the adhesive application portions are brought close to each other and are arranged or wound around the cylindrical drum surface, and the hollow fiber membranes adjacent to each other on the grooved drum are joined with the adhesive on the side of the hollow fiber membrane. .

Further, the hollow fiber membrane sheet of the present invention is a spiral-shaped hollow fiber membrane having a plurality of grooves which are continuously formed in a spiral shape in the circumferential direction and have a plurality of grooves formed in parallel. The hollow fiber is inserted between the grooves on the surface of the grooved cylindrical drum and wound, and the hollow fiber is wound between the grooves of the spiral grooved cylindrical drum so that the hollow fiber membrane and the fiber adhesive are alternately arranged. The hollow fiber membranes are supplied in close proximity to the membrane, and the adjacent hollow fiber membranes are joined together via a thread-like adhesive on a spirally grooved cylindrical drum. The main point is to cut open in parallel.

In the hollow fiber membrane sheet of the present invention, a number of hollow fiber membranes fed out are aligned in a parallel direction, and each hollow fiber membrane is densely perforated in parallel in a circumferential direction. Each groove of the grooved cylindrical drum having a groove is inserted into each groove on the surface of the cylindrical drum and drawn or wound, and the thread adhesive is arranged such that the hollow fiber membrane and the thread adhesive are alternately arranged. The hollow fiber membranes are supplied between the grooves of the grooved cylindrical drum in close proximity to the hollow fiber membranes, and the adjacent hollow fiber membranes are joined to each other on the grooved cylindrical drum via a thread-like adhesive. Make a summary.

Further, in the hollow fiber membrane module of the present invention, a large number of hollow fiber membranes are arranged in a sheet shape, and at least a part of adjacent hollow fiber membranes is joined at the outer periphery of the hollow fiber membrane. Both ends of the hollow fiber membrane sheet, or the other end of the sheet having one end closed, are fixed with a potting resin, and the hollow fiber membrane end is opened in the water collecting pipe. That is the gist.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a hollow fiber membrane sheet of the present invention, in which a large number of hollow fiber membranes are arranged in a sheet shape, and at least a part of adjacent hollow fiber membranes is located at the outer periphery of the hollow fiber. Be joined. According to this hollow fiber membrane sheet, a hollow fiber membrane module is created using the hollow fiber membrane sheet,
Even if filtration of highly polluted water is performed and air scrubbing and cleaning are used together, adjacent hollow fiber membranes are joined by an adhesive, so that thread-like and feather-like substances are entangled between the hollow fiber membranes. And a hollow fiber membrane module having a long filtration life can be obtained.

In the hollow fiber sheet-like material, the ratio of the bonding area to the total surface area of the outer peripheral portion of the hollow fiber membrane is as follows:
It is preferably 2 to 20%, preferably 2 to 40%. When the ratio of the area of the joining portion is less than 2%, a thread-like material,
The effect of preventing the entanglement of the feathers tends to decrease, which is not preferable. When this ratio exceeds 40%,
Since the surface area of the hollow fiber membrane used for filtration decreases, the amount of filtration of the hollow fiber membrane module tends to decrease. Also,
It is preferable that the joint portion between the hollow fiber membranes is present in the length direction of the hollow fiber membrane because the module becomes a flexible hollow fiber membrane and easily swings when performing air scrubbing.

As the hollow fiber membrane used for the hollow fiber membrane sheet of the present invention, a hollow fiber membrane of cellulose type, polyolefin type, polyvinyl alcohol type, polymethyl methacrylate type, polysulfone type or the like can be used. The pore diameter, porosity, film thickness, outer diameter, etc. of the hollow fiber membrane may be appropriately selected according to the intended use of the sheet-like material, and the hollow fiber membrane may be selected. Further, as the surface characteristics of the hollow fiber membrane, it is preferable to use a permanent hydrophilic membrane having a hydrophilic group on the membrane surface. By using the permanent hydrophilizing membrane, the hydrophobic interaction between the organic substance and the surface of the hollow fiber membrane can be reduced, and the adsorption of the organic substance to the surface of the hollow fiber membrane can be reduced.

FIG. 2 is a schematic cross-sectional view showing an example of the hollow fiber membrane sheet of the present invention. Adjacent hollow fiber membranes 1 are arranged at the outer periphery of the hollow fiber membrane in the longitudinal direction of the hollow fiber membrane. Adhesive 2
Are joined together.

FIG. 3 is a schematic cross-sectional view showing another example of the hollow fiber membrane sheet of the present invention. The hollow fiber membrane is joined by heat-sealing the outer peripheral portion thereof.

FIG. 4 is a schematic cross-sectional view showing another example of the hollow fiber membrane sheet of the present invention. The hollow fiber membranes are arranged in a sheet shape and two adjacent hollow fiber membranes are adjacent to each other. But,
It is joined in the longitudinal direction of the hollow fiber membrane via the thread adhesive 3.

As the adhesive material constituting the thread adhesive of the present embodiment, a thermoplastic resin having a melting point lower than the thermal deformation temperature of the hollow fiber membrane material can be used. For example, ethylene-vinyl acetate copolymer A thermoplastic resin such as a resin, an ethylene-vinyl chloride copolymer, a styrene-based resin, and an acrylic resin, or a mixture of these thermoplastic resins is used. A thread-like adhesive obtained by shaping the thermoplastic resin into a thread shape is disposed between the hollow fiber membranes, and the hollow thread membranes are joined by melting the thread-like adhesive.

The outer diameter of the thread-like adhesive is one of the outer diameter of the hollow fiber membrane.
It is preferable to be in the range of / 3 to 1/100. When the outer diameter of the thread-like adhesive exceeds one-third of the outer diameter of the hollow fiber membrane, the number of hollow fiber membranes occupying in the hollow fiber membrane sheet-like material decreases, and the outer surface of the hollow fiber membrane has a fibrous shape. Since the area blocked by the adhesive increases, the filtration performance when a hollow fiber membrane module is manufactured using a sheet-like material tends to decrease. Further, when the outer diameter of the thread-like adhesive is smaller than 1/100 of the outer diameter of the hollow fiber membrane, the adhesive strength of the hollow fiber membrane by the thread-like adhesive is reduced. At the time of assembling or washing the hollow fiber membrane module in highly polluted water, the joint between the hollow fiber membrane and the thread-like adhesive is likely to come off. More preferably, when the outer diameter of the thread adhesive is 1/5 to 1/30 of the outer diameter of the hollow fiber membrane,
A sheet having excellent adhesive strength and excellent filtration performance when formed into a hollow fiber membrane module can be obtained.

FIG. 5 shows an alternative to the thread adhesive shown in FIG.
The hollow fiber membranes were joined by a thread-like adhesive having a core-sheath structure having a thread-shaped core portion 5 made of a support component for supporting the adhesive component inside and a sheath portion 6 made of the adhesive component on the outer periphery thereof. It is a cross section of a hollow fiber membrane sheet. By using a thread-like adhesive having a core-sheath structure as the thread-like adhesive, the surface area of the hollow fiber membrane closed by the adhesive component can be reduced. Can be increased.

The material constituting the core portion of the core-sheath type thread adhesive may be any material which can be formed into a fibrous shape, such as cellulose, polyolefin, polyvinyl alcohol, polymethyl methacrylate, and polysulfone. Polyacrylonitrile-based, polyamide-based, polyvinyl chloride-based, polyvinyl acetate-based, and copolymers of these with ethylene, or viscose or acetate can be used.

Examples of the adhesive material used for the sheath portion include thermoplastic resins such as ethylene-vinyl acetate copolymer resin, ethylene-vinyl chloride copolymer, styrene resin and acrylic resin, and thermoplastic resins such as these. Or a reaction-curable resin such as an epoxy resin, an unsaturated polyester resin, or a urethane resin.

Further, the form of these adhesive components may be, for example, a state of being melted in a solvent or an emulsion. As the solvent-based adhesive component, a combination of a commonly used adhesive resin and a solvent can be used, and in the case of an emulsion-based adhesive, a known material can also be used. When the hollow fiber membrane is joined by a thread-based adhesive using a solvent-based or emulsion-based adhesive component as an adhesive component used for the sheath, a solvent interposed in the thread-based adhesive,
It is necessary to devolatilize the solute for the purpose of developing the adhesive performance of the adhesive component.

As the adhesive component, a photocurable resin can be used. As the photocurable resin, generally used, for example, an epoxy acrylate-based, urethane acrylate-based, polyester acrylate-based, ultraviolet curable resin composed of a polyfunctional resin such as a polyol acrylate-based resin, an electron curable resin, And a one-component curable resin such as a visible light curable resin. By impregnating or coating the core with these adhesive components, a core-sheath type thread adhesive can be obtained.

The thickness of the sheath of the thread adhesive is 50 μm to 1 μm.
It is preferably 50 μm. Sheath thickness is 50μm
If it is less than 30, the adhesive force between the hollow fiber membranes is insufficient, and the sheet-like material is liable to be deformed. In addition, the thickness of the sheath is 15
If the thickness exceeds 0 μm, the outer surface of the hollow fiber membrane that is closed by the sheath increases, and the filtration performance of the hollow fiber membrane module produced using such a hollow fiber membrane sheet decreases. This is not preferred.

FIG. 6 shows an example in which the thread adhesive shown in FIG.
FIG. 4 is a schematic cross-sectional view of a hollow fiber membrane sheet material using a thread-like adhesive having a sea-island structure composed of a sea part composed of an adhesive component and a thread-like island part composed of a support component. Even if a thread-like adhesive having such a structure is used as the thread-like adhesive, the surface area of the hollow fiber membrane closed by the adhesive component can be reduced. In this case, the amount of water permeation can be increased.

FIG. 7 is a schematic cross-sectional view showing another example of the hollow fiber membrane sheet of the present invention, wherein at least one reinforcing member 7 is provided in the sheet and adjacent hollow fiber membranes are provided. 1 and / or at least a part of the hollow fiber membrane 1 and the reinforcing member 7 are joined at their outer peripheral portions. The material of the reinforcing member 7 used for the present hollow fiber membrane sheet is not particularly limited as long as its rigidity is higher than that of the hollow fiber membrane 1. For example, a metal pipe, a resin rod, a fiber reinforced composite material, or the like is used. Yes,
There is no limitation as long as it can be adhered by the adhesive component. Therefore, the shape may be a hollow pipe or a solid rod, and the cross-sectional shape does not need to be circular.

The cross-sectional area of the reinforcing member 7 is not limited, but it is preferable that the reinforcing member 7 does not hinder the flow of air when performing air scrubbing cleaning when the module is used. Although the number of the reinforcing members 7 is not limited, it is not preferable that the number of the reinforcing members 7 is more than the number that fulfills the reinforcing function, because the membrane area of the hollow fiber membrane module decreases. Therefore, it is preferable to select an appropriate combination of the size, strength, and number of the reinforcing members of the selected material.

[0034] In the hollow fiber membrane module prepared using the hollow fiber membrane sheet, the hollow fiber membrane can be fixed to the water collecting pipe via the reinforcing member, and there is no bias when air scrubbing is performed. It is possible to develop an air flow between the hollow fiber membranes. In addition, it is preferable to use the above-mentioned core-sheath type thread-like adhesive or sea-island type thread-like adhesive for adhesion between hollow fiber membranes and / or between the hollow fiber membrane and the reinforcing member.

Hereinafter, the method for producing the hollow fiber membrane sheet according to the present invention will be described with reference to the drawings. FIG. 8 is a schematic view illustrating an example of the method for producing a hollow fiber membrane sheet according to the present invention. The continuous hollow fiber membrane 1 drawn out from the bobbin 1001 is wound on a cylindrical drum 1006 via a guide roll 1003 after a streak-like fusion zone is formed on the side of the hollow fiber membrane by a heater unit 1004. . The bobbin 1001 preferably has a brake mechanism for applying tension to the hollow fiber membrane 1. However, the hollow fiber membrane is stretched when an excessive tension is applied, and may cause cutting in some cases. Therefore, it is preferable that the tension is as small as possible within a range in which the hollow fiber membrane does not flutter in the process. It is preferable to appropriately adjust the winding amount of the hollow fiber membrane and the diameter and thickness of the hollow fiber membrane. The tension of the hollow fiber membrane is preferably 200 g or less, more preferably 100 g or less. Further, it is preferable to use a powder brake capable of adjusting the braking force or a brake mechanism having the same performance as the brake mechanism.

It is preferable that the guide roll 1003 rotates at a peripheral speed equal to the transport speed of the hollow fiber membrane 1. The material of the guide roll 1003 is not limited, but it is preferable to select a material that does not easily generate static electricity in the hollow fiber membrane 1. Further, it is preferable that at least the membrane contact portion of the roll 1003 is subjected to a finishing process that does not damage the surface of the hollow fiber membrane 1.

The heater section 1004 heats and melts only the portion of the hollow fiber membrane wound later on the drum in contact with the adjacent hollow fiber membrane. As the heater unit 1004, for example, a non-contact heater such as a far-infrared heater or a CO2 laser, or a contact heater such as a heating roll can be used. The heater temperature is equal to or higher than the melting temperature of the material of the hollow fiber membrane 2 to be used, and is preferably adjusted as appropriate according to the material of the hollow fiber membrane, the transport speed, and the outside air conditions.

Guide roll 1003 and heater section 1
Reference numeral 004 is fixed to the movable base 1002 by the support 1005. The moving base 1002 can move at a constant speed in parallel with the center axis of the drum 1006, and the moving speed is synchronized with the peripheral speed of the drum 1006, and the speed is such that the hollow fiber membrane 1 It is adjusted so that it can be wound without gaps. FIG. 9 is a schematic diagram showing the surface of a drum 1006 used in the present manufacturing method, in which grooves continuously spirally extending in the circumferential direction and densely drilled in parallel are formed. The groove pitch P is equal to or less than twice the radius r, and the groove depth L is smaller than the radius r. These values are appropriately determined depending on the outer diameter of the hollow fiber membrane 1 to be used and the area of the portion where the hollow fiber membranes are joined to each other. The value of the radius r described here is equivalent to the value of the radius of the hollow fiber membrane 1. The material of the drum 1006 is not particularly limited, but it is preferable to perform a finishing process that does not damage the surface of the hollow fiber membrane 1.

The outer periphery of the hollow fiber membrane 1 is heated and melted by the heater unit 1004, and then wound around a drum 1006. After the hollow fiber membranes are joined together at the fusion zone, the melting point of the material of the hollow fiber membrane 1 is reduced. It is cooled below. Thereafter, the hollow fiber membrane array tubular body obtained in parallel with the central axis of the drum 1006 is cut open to obtain a hollow fiber membrane sheet.

FIG. 10 is a schematic view showing another example of the method for producing a hollow fiber membrane sheet according to the present invention, and FIG. 11 is a schematic view showing the surface of a cylindrical drum used in this production method.

The continuous hollow fiber membrane 1 wound from the bobbin 1201 is wound on a cylindrical drum 1211 via a guide roll 1203. The bobbin 1201 preferably has a brake mechanism for applying tension to the hollow fiber membrane 1 for the same reason as described above. Further, it is preferable that the guide roll 1203 is rotated at a speed different from the transport speed of the hollow fiber membrane 1. The material of the guide roll 1203 is not limited, but a material that makes it difficult for the hollow fiber membrane 1 to generate static electricity or the like should be selected. Further, the roll 12
It is preferable that at least the contacting portion 03 is subjected to a finishing process that does not damage the surface of the hollow fiber membrane 1.

From the bobbin 1204, the core 5 of the thread-like adhesive
Is unwound and the container 12 is guided through the guide roll 1205.
When passing through the impregnating rolls 1206 in 08, the adhesive component forming the sheath portion is carried, and the excess adhesive component removing rolls 1
After passing through 207, it is wound on a drum 1210.

The bobbin 1204 preferably has a brake mechanism for applying tension to the core 5. However, when a material having insufficient rigidity is used as the core 5,
If excessive tension is applied, the core may be stretched, and in some cases, it may be cut. Therefore, it is preferable that the tension be as small as possible within a range where the core does not flutter in the process.
It is preferable to adjust as appropriate according to the winding amount of the core wound around the core, the diameter thereof, and the like. Therefore, the brake mechanism
It is preferable to use a powder brake whose braking force can be adjusted, or a powder brake having performance equivalent thereto.

The core 5 sent out from the guide roll 1205 is moved to the impregnation roll 1206. The impregnating roll 1206 is for supporting the adhesive component constituting the sheath on the core 5, and is preferably rotated at a speed different from the transport speed of the core 5. Further, the impregnating roll 12
Reference numeral 06 is disposed in a container 1208 in which the adhesive component is present, and the roll 1206 has a part of its surface in contact with the adhesive component.

With respect to the core 5 sent out from the impregnating roll 1206, the amount of the adhesive component carried is controlled by the excess adhesive component removing rolls 1207. Excessive adhesive component removal rolls 12
07 may have a flat surface, but in order to prevent the core portion from meandering in a direction parallel to the center line of the rolls,
It is preferable to form a mountain shape like a bolt. Further, the rolls have a peripheral speed of a contact portion of the roll at a speed different from the transport speed of the core portion 5. The excess adhesive component generated by the excess adhesive component removal rolls 1207 is
It is returned to the container 1208.

The impregnating roll 1206, the excess adhesive component removing roll 1207, and the container 1208 are supported by the moving base 1202 by the support 1209, and can be moved in a direction parallel to the center axis of the drum 1210. Container 1
The adhesive component in 208 is replenished so as to always contact the impregnating roll 1206. As a method for replenishing the adhesive component, a known method such as a method using a pump or a manual replenishment method using a beaker can be used.

When the adhesive component to be used is a thermoplastic resin, the impregnating roll 1206, the excess adhesive component removing roll 1207, and the container 1208 need to be capable of heating each. The heating temperature may be at least the melting point of the thermoplastic resin to be used. Examples of the heating method include a method using a heater and a method using a heat medium.However, the heating method is not limited thereto, and a known method may be used. Is possible. When the adhesive component used is a solvent-based, emulsion-based, or photocurable resin, such a heating mechanism need not be provided.

The moving base 1202 is movable at a constant speed in parallel with the center axis of the drum 1210, and the moving speed is synchronized with the peripheral speed of the drum 1210.
The speed is adjusted so that the hollow fiber membrane 1 is wound around the drum without any gap. The core-sheath type thread-like adhesive carrying the adhesive component is wound between the hollow fiber membranes on the drum 1210. The cylindrical drum 1210 is spirally continuous in the circumferential direction as shown in FIG. It has grooves formed in parallel. The groove pitch P is at least twice the radius r, and the groove depth L must be smaller than the radius r. These values depend on the outer diameter of the hollow fiber membrane 1 used and the bonding between the hollow fiber membranes. It is appropriately determined according to the area of the portion to be formed. The value of the radius r described here is equivalent to the value of the radius of the hollow fiber membrane 2,
There is a clearance c between the grooves. The material of the drum 1210 is not particularly limited, but is preferably subjected to a finishing process that does not damage the surface of the hollow fiber membrane 1.

When the adhesive component is a solvent type or an emulsion type, immediately after the hollow fiber membrane 1 and the thread-like adhesive are wound around the drum 1210 or after that, an intervening solvent,
Bonding of the hollow fiber membranes is performed by devolatilizing the solute.
As a method for devolatilizing a solvent or a solute, a known method such as heating or suction can be used, or a combination thereof may be used.

When a photocurable resin is used as the adhesive component, the hollow fiber membrane 1 is irradiated with an active energy ray such as an ultraviolet ray, a visible ray, or an electron beam immediately after the hollow fiber membrane 1 is wound around the drum 1210 or thereafter. The hollow fiber membranes are bonded together.

The hollow fiber membrane 1 and the yarn adhesive are applied to the drum 121
After being wound around 0, the hollow fiber membrane 1 is cut open in parallel with the central axis of the drum 1210 to obtain a hollow fiber membrane sheet.

FIGS. 12 and 13 are schematic views showing another example of the method for producing a hollow fiber membrane sheet according to the present invention.
FIG. 4 is a schematic view showing the surface of a cylindrical drum used in the present manufacturing method.

In FIG. 12, a continuous hollow fiber membrane 1 wound from a bobbin 1401 is supplied to a part of the outer periphery of the hollow fiber membrane by a nozzle unit 1406 via a guide roll 1403, and then the hollow fiber membrane 1 is fed into a cylindrical shape. It is wound on a shaped drum 1408. The adhesive is supplied in a fixed amount by a fixed amount supply machine 1404,
It is sent to the nozzle part 1406 via the transport pipe 1405.
The bobbin 1401 preferably has a brake mechanism for applying tension to the hollow fiber membrane 1 for the same reason as described above.

As the fixed-quantity feeder 1404, a gear pump or a pump having the same performance can be used. When the adhesive is a thermoplastic resin, the metering device 140
4 needs to have a heatable performance. The heating temperature may be at least the melting point of the thermoplastic resin to be used, and a known method can be used. When the adhesive used is a solvent-based, emulsion-based, or photocurable resin, it is not necessary to have the heating mechanism.

The adhesive supplied in a constant amount from the constant amount supply device 1404 is transported to the nozzle 1406 via the transport pipe 1405. The nozzle portion 1406 has a fine port for supplying the adhesive to the hollow fiber membrane 1 in a thread form. The diameter of the fine mouth is preferably 0.2 mm or less, more preferably 0.1 mm or less. When the diameter of the fine mouth exceeds 0.2 mm, the fine pores on the surface of the hollow fiber membrane 1 are widely covered by the adhesive applied to the hollow fiber membrane 1 from the nozzle portion 1406. This is not preferable because the flow capacity of filtration at the time of the removal tends to decrease.

When the adhesive to be used is a thermoplastic resin, the transport pipe 1405 and the nozzle part 1406 need to have a heating capability. The heating method is based on the quantitative feeder 14.
Same as 04. The adhesive component used is a solvent type,
In the case of an emulsion-based or photo-curable resin, it is not necessary to have a heating mechanism. The adhesive supplied in a fixed amount from the fixed amount supply machine 1404 is supplied through the transport pipe 1405 to the nozzle 14.
Transported to 06.

Guide roll 1403 and nozzle section 14
Reference numeral 06 is fixed to the moving base 1402 by a support 1407.

The moving base 1402 can move at a constant speed in parallel with the center axis of the drum 1408, and the moving speed is synchronized with the peripheral speed of the drum 1408. It is adjusted so that it can be wound on the drum without gaps.

As shown in FIG. 14, a schematic diagram of the surface of the drum 1408 has a large number of grooves that are helically continuous in the circumferential direction and are formed in parallel. The groove pitch P is not more than twice the radius r and the groove depth L needs to be smaller than the radius r. These values are determined by the outer diameter of the hollow fiber membrane 1 to be used and the hollow fiber membranes. Is appropriately determined depending on the area of the part to be joined. The value of the radius r described here is equivalent to the value of the radius of the hollow fiber membrane 1.

When the adhesive component is a solvent type or an emulsion type, the devolatilization of the solvent and solute intervening immediately after or after the hollow fiber membrane 1 is wound around the drum 1408 is based on the reason described above. is necessary. When a photocurable resin is used as the adhesive component, the hollow fiber membrane 1
It is necessary to irradiate the active energy ray immediately after or after being wound around the 408. Hollow fiber membrane 1
Is wound around the drum 1408, the drum 1408
The hollow fiber membrane 1 can be obtained by cutting open the hollow fiber membrane 1 in parallel with the central axis of the hollow fiber membrane.

FIG. 13 is obtained by replacing the part of the method of supplying the adhesive component by the nozzle in FIG. 12 with the method of supplying the adhesive component by the transfer roll. A hollow fiber membrane 1 and an adhesive component;
The steps from the bobbin 1401 to the guide roll 1403 are the same as in FIG. The hollow fiber membrane 1 sent out from the guide roll 1403 is moved to the transfer roll 1501. The transfer roll 1501 is for supplying the adhesive component to the hollow fiber membrane 1 in the form of a thread, and is rotated at a speed equal to or different from the transport speed of the hollow fiber membrane 1.

Transfer Roll 1501 and Back Roll 150
2 are arranged such that their surfaces have a line contact via the adhesive component, both rotating in the same direction or in opposite directions. The back roll 1502 is arranged in a container 1503 in which the adhesive component exists, and a part of the surface of the back roll 1502 is in contact with the adhesive component. Further, the transfer roll 1501, the back roll 15
02 and the container 1503 are supported by the moving base 1402 by the support 1504, and thus have a structure that can move in parallel with the central axis of the drum 1408.

The adhesive present in the container 1503 adheres to the surface of the rotating back roll 1502, and is then transferred to the surface of the transfer roll 1501. The amount of the adhesive at this time is controlled by the gap between the transfer roll 1501 and the back roll 1502, and is transferred from the transfer roll to the outer peripheral portion of the hollow fiber membrane 1 and supplied. The amount of the adhesive is appropriately determined according to the adhesive strength and the surface area of the hollow fiber membrane 1. Container 1503
The adhesive inside is always replenished so as to be in contact with the back roll 1502.

Transfer Roll 1501, Back Roll 150
When the adhesive component to be used is a thermoplastic resin, the container 2 and the container 1503 need to be capable of heating each.
The hollow fiber membrane 1 having an adhesive component carried on a part of the outer peripheral portion is thereafter wound around a drum 1408 as in FIG.

FIG. 15 is a schematic view showing an example of the method for producing the hollow fiber membrane sheet according to the present invention. FIG. 16 is a schematic view showing the surface of a cylindrical drum used in the present production method.
FIG. 17 shows a cross section of a nozzle used in the present manufacturing method. In the present manufacturing method, the bobbin 170
A large number of continuous hollow fiber membranes 1 unwound by 1
It is sent to the nozzle 1706 via the guide rolls 1702. The bobbin 1701 preferably has a brake mechanism for applying tension to the hollow fiber membrane 1 for the same reason as described above.

It is preferable that the guide rolls 1702 rotate at a peripheral speed equivalent to the transport speed of the hollow fiber membrane 1. The material of the guide rolls 1702 is not limited, but a material that does not easily generate static electricity in the hollow fiber membrane 1 should be selected.
Further, it is preferable that at least the membrane-contacting portion of the rolls 1702 is subjected to a finishing process that does not damage the surface of the hollow fiber membrane 1. It is important that a large number of hollow fiber membranes 1 are arranged on the rolls 1702 so as to be adjacent to each other.

A large number of hollow fiber membranes sent out from the guide rolls 1702 are supplied to holes 1904 provided in the nozzle 1706, and one hollow fiber membrane 1
The holes are fed in correspondingly. In the nozzle 1706, the hollow fiber membrane 1
01, 1902, and then the adhesive discharged through 1903 is carried on a part of the circumference of the hollow fiber membrane 1. The hole pitch P of the nozzle is equal to the groove pitch P of the cylindrical drum 1703 described later.

On the other hand, the adhesive is supplied in a constant amount by the constant amount supply device 1704. As the fixed quantity feeder 1704, for example, an extruder or a machine having performance equivalent thereto can be used. When the adhesive component is a thermoplastic resin, it is necessary that the fixed-quantity feeder 1704 has a capability of heating.
The heating temperature may be at least the melting point of the thermoplastic resin to be used, and a known heating method may be used. The adhesive component supplied quantitatively from the quantitative supply machine 1704 is supplied to the liquid supply pipe 170.
5 to a nozzle 1706.

The nozzle 1706 preferably supplies the adhesive continuously to the hollow fiber membrane 1 in a thread form.
The diameter of 04 is preferably 0.1 mm or less, more preferably 0.05 mm or less. The diameter of the fine holes 1904 is 0.
If it exceeds 1 mm, the hollow fiber membrane 1
Since the range of the adhesive component applied to the hollow fiber membrane becomes too large, the adhesive component covers the micropores on the surface of the hollow fiber membrane 1 widely, and as a result, the filtration flow rate performance of the hollow fiber membrane module tends to be significantly reduced. Not preferred. When the adhesive component to be used is a thermoplastic resin, the liquid sending pipe 1705 is used.
In addition, the nozzle 1706 needs to have a capability of heating. The heating method may be the same as that of the fixed-quantity feeder 1704.

The drum 1703 is, as shown in FIG.
On its surface, it has a number of grooves that are densely drilled parallel to the circumferential direction. In FIG. 18, the groove pitch P is not more than twice the radius r, and the groove depth L is smaller than the radius r. These values depend on the outer diameter of the hollow fiber membrane 1 to be used and the portion where the hollow fiber membranes are joined. Is appropriately determined depending on the area of. The value of the radius r described here is equivalent to the value of the radius of the hollow fiber membrane 1.
The material of the drum 1703 is not limited. Hollow fiber membrane 1
It is preferable to apply a finishing process that does not damage the surface.

The drum 1703 is arranged at a position parallel to the discharge port of the nozzle 1706 and at the position where the center axis of the groove provided on the surface of the drum 1703 coincides with the center axis of the groove of the nozzle 1706. As a result, the adhesive components of adjacent portions of the hollow fiber membranes 2 arranged in a sheet along the grooves of the drum 1703 are arranged on the convex portions of the drum 1703, and the hollow fiber membrane 1 is placed in the concave portions of the drum 1703. As a result, the hollow fiber membrane supporting the adhesive component is immobilized in a sheet form to obtain a hollow fiber membrane sheet.

Here, when the adhesive component is a solvent type or an emulsion type, it is necessary to devolatilize the solvent and solute intervening immediately after the hollow fiber membrane 1 is wound around the drum 1703 for the reason described above. is there. When a photocurable resin is used as the adhesive component, it is necessary to irradiate an active energy ray immediately after the hollow fiber membrane 1 is wound around the drum 1703.

The hollow fiber membrane sheet S is taken up by a pair of take-up rolls 1707. Pickup roll 1
707 has been subjected to a finishing process that does not damage the hollow fiber membrane, and has a nip force that does not crush the hollow fiber membrane. The sheet-like hollow fiber membrane sent out from the take-off roll 1707 is cut by a cutter 1708 to obtain a fixed-length sheet-like hollow fiber membrane of a desired length.

FIG. 18 is a schematic view showing an example of the method for producing a hollow fiber membrane sheet according to the present invention, FIG. 19 is a schematic view showing the surface of a drum 2008 used in this production method, and FIG. It is a cross section of a nozzle used in this manufacturing method.

In FIG. 18, a large number of continuous hollow fiber membranes 1 wound from a bobbin 2001 are sent to a cylindrical drum 2009 via guide rolls 2002. The bobbin 2001 preferably has a brake mechanism for applying tension to the hollow fiber membrane 1. Further, it is preferable that the guide rolls 2002 rotate at a peripheral speed equivalent to the transport speed of the hollow fiber membrane 1. The hollow fiber membrane 1 comprises the rolls 2
002 are arranged so as to be adjacent to each other.

On the other hand, when a large number of core portions 5 constituting the continuous core-sheath type thread adhesive wound from the bobbin 2003 pass through the impregnating roll 2005 in the container 2007 via the guide rolls 2004, The adhesive component forming the sheath portion is carried, passes through the excess adhesive component removing rolls 2006, and is arranged at regular intervals as the core-sheath type thread-like adhesive 3 passes through the groove roll 2008. Then the drum 20
09 are arranged between the hollow fiber membranes arranged on each.

The bobbin 2003 preferably has a brake mechanism for applying tension to the core 5. However, when a material that does not have sufficient rigidity is used for the core portion, it may expand when excessive tension is applied, and in some cases, cause cutting, so that the tension is within a range where there is no flapping in the process of the hollow fiber membrane. It is preferable that the diameter is as small as possible. Further, it is preferable that the diameter is appropriately adjusted according to the winding amount and the diameter of the core wound around the bobbin 2003. Therefore, it is preferable to use a powder brake capable of adjusting the braking force or a brake mechanism having the same performance as the brake mechanism.

The core 5 sent out from the guide rolls 2004 is moved to the impregnation roll 2005. The impregnating roll 2005 has the core 5 carrying the adhesive component constituting the sheath, and has a peripheral speed of the contact portion of the roll at a speed different from the transport speed of the core 5. Furthermore, the impregnation roll 2005 is arranged in a container 2007 in which the adhesive component is present, and the roll 2005 has a part of its surface in contact with the adhesive component. The core 5 sent out from the impregnating roll 2005 is used to remove excess adhesive component removing rolls 200.
At 6, the amount of the adhesive component carried is controlled. When the core is coated with the adhesive component one by one, the obtained thread-like adhesive is of a core-sheath type. When a plurality of cores are bundled and coated with the adhesive component, the resulting thread-like adhesive is sea-island. Type.

The surplus adhesive component removing rolls 2006 may have a flat surface. However, in order to prevent the supporting component from meandering in a direction parallel to the center line of the rolls, the rolls are preferably formed in a mountain shape like a bolt. Should. Further, the rolls have a peripheral speed of a contact portion of the roll at a speed different from the transport speed of the core portion 5. The excess adhesive component generated by the excess adhesive component removing rolls 2006 returns to the container 2007 and adheres again to the support component. The adhesive component in the container 2007 is appropriately replenished so as to always be in contact with the impregnation roll 2005.

When the adhesive component to be used is a thermoplastic resin, the impregnating roll 2005, the excess adhesive component removing roll 2006, and the container 2007 need to be capable of heating each. When the adhesive component used is a solvent-based, emulsion-based, or photocurable resin, it is not necessary to have the heating mechanism.

The groove roll 2008 has a large number of grooves as shown in FIG. The groove pitch P is equal to the groove pitch P of the drum 2009. The thread adhesive is sent out from the rotating drum 2009 in a state of being arranged at an equal pitch along the groove shown in FIG.

As shown in FIG. 20, the drum 2009
It has a large number of grooves which are densely drilled on its surface parallel to the circumferential direction. The groove pitch P is at least twice the radius r, and the groove depth L must be smaller than the radius r. These values depend on the outer diameter of the hollow fiber membrane 1 used and the bonding between the hollow fiber membranes. It is appropriately determined according to the area of the portion to be formed. The value of the radius r described here is equivalent to the value of the radius of the hollow fiber membrane 1.

The drum 2009 is arranged such that the groove roll 2008 and the center axis thereof are parallel to each other, and the center axis of the groove of the drum 2009 is shifted by 1 / 2P from the center axis of the groove of the groove roll 2008. This allows the drum 2009
The thread adhesive is arranged between the hollow fiber membranes 1 arranged in a sheet along the grooves.

When the adhesive component is a solvent type or an emulsion type, the solvent and solute intervening therebetween are devolatilized immediately after the hollow fiber membrane 1 and the thread adhesive are arranged in a sheet shape around the outer periphery of the drum 2009. Is necessary for the reasons described above. When a photocurable resin is used as the adhesive component, it is necessary to supply an active energy ray immediately after the hollow fiber membrane 1 is wound around the drum 2009 or thereafter.

The obtained hollow fiber membrane sheet is taken up by a pair of take-up rolls 2010, and the sheet-shaped hollow fiber membrane sent out from the take-up roll 2010 is cut by a cutting machine 2011 to obtain a desired length. A long sheet-like hollow fiber membrane is obtained.

FIG. 23 is a schematic view showing an example of the hollow fiber membrane module of the present invention. A plurality of hollow fiber membranes are arranged in a sheet shape, and at least a part of adjacent hollow fiber membranes is joined at the outer periphery of the hollow fiber membrane. And the end of the hollow fiber membrane is open in the water collecting pipe 8. By immersing the hollow fiber membrane module in the contaminated water and suctioning the well-provided water outlet of the hollow fiber membrane module, permeated water can be selectively taken out of the contaminated water.

In the present hollow fiber membrane module, since the hollow fiber membranes are not individually separated, the filaments and feathers are less likely to be entangled, and the cleaning by air scrubbing can be performed effectively.

[0088]

The present invention will be described below in detail with reference to examples.

Example 1 A vinyl acetate resin was melt-extruded using a discharge die to obtain a continuous thread adhesive having an outer diameter of 9.5 μm. This thread-like adhesive was arranged in parallel with a polyethylene porous hollow fiber membrane (inner diameter: 580 μm, outer diameter: 720 μm), and spiral grooves (pitch: 820 μm, groove width: 650 μm) were formed on the surface.
m V-shaped groove, 350 grooves) 250m in diameter
m and continuously wound on a drum arranged in a chamber. In the chamber, hot air of 80 ° C. was refluxed to the bottom to melt the thread-like adhesive disposed between the hollow fiber membranes. Twenty-five minutes after the completion of the winding, the hot air was stopped, and the room temperature air was blown into the chamber to cool the whole.

After cooling, the arranged sheets were cut with a sharp knife in the longitudinal direction of the drum to obtain a hollow fiber membrane sheet in which hollow fiber membranes were joined with a thread-like adhesive. Using the obtained hollow fiber membrane sheet, one end is closed with a polyurethane resin and the other end is polyurethane resin so that the exposed hollow fiber membrane sheet has a sheet width of 290 mm and a sheet length of 700 mm. After the potting, the end of the hollow fiber membrane that had been potted was opened to produce a single-ended hollow fiber module. The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 350.

Using this hollow fiber membrane module, the amount of water permeation when water at normal temperature was permeated at a pressure of 0.5 kg / cm ² was measured. The water permeability was 1.21 m ³ / hr. Further, even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the thread or feather with the hollow fiber membrane module occurred.

Example 2 Melted vinyl acetate resin was added to a polyester monofilament yarn (20 denier).
Coating was performed using a coating die to a thickness of 12 μm to obtain a core-sheath type thread-like adhesive having an outer diameter of 69.5 μm. This thread-like adhesive was arranged in parallel with a polyethylene porous hollow fiber membrane (inner diameter: 580 μm, outer diameter: 720 μm),
250 mm in diameter with spiral grooves (V-shaped grooves with a pitch of 790 μm and groove width of 650 μm, number of grooves: 350) on the surface
, Was continuously wound on a drum arranged in a chamber. In the chamber, hot air of 80 ° C. was refluxed to the bottom to melt the sheath material of the thread-like adhesive disposed between the hollow fiber membranes. 25 minutes after the end of winding, stop hot air,
The whole was cooled by blowing air at room temperature into the chamber.

After cooling, the arranged sheets were cut with a sharp knife in the longitudinal direction of the drum to obtain a hollow fiber membrane sheet. Using the obtained hollow fiber membrane sheet, the exposed hollow fiber membrane sheet has a sheet width of 278 mm and a sheet length of 70 mm.
One end was sealed with a polyurethane resin so as to have a length of 0 mm, the other end was potted with a polyurethane resin, and then the end of the hollow fiber membrane that had been potted was opened to produce a hollow fiber membrane module. The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 350.

Using this hollow fiber membrane module, the amount of permeated water at room temperature was measured under the same conditions as in Example 1.
The water permeability was 2.75 m ³ / hr. Further, even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the thread or feather with the hollow fiber membrane module occurred.

Example 3 A 10% ethanol solution of an ethylene-vinyl acetate copolymer resin (vinyl acetate content: 19% by weight) was added to a polyethylene multifilament yarn (15 denier / 8 filaments, twist number: 20 turns / m) at room temperature. And drying were repeated three times to obtain ethylene-
A core-sheath type thread-like adhesive having a plurality of polyethylene cores disposed in a vinyl acetate resin was obtained. The outer shape of the obtained thread adhesive was 110 μm, and the thickness of the sheath was 10 μm.

The obtained thread-like adhesive was arranged in parallel with a polyethylene porous hollow fiber membrane (inner diameter: 580 μm, outer diameter: 720 μm), and spiral grooves (pitch: 790 μm, groove width: 65 μm) were formed on the surface.
(V-shaped groove of 0 μm, number of grooves 350) 25 diameter processed
It was wound continuously on a 0 mm drum arranged in the chamber. In the chamber, hot air of 90 ° C. was refluxed to the bottom to melt the sheath material of the thread-like adhesive disposed between the hollow fiber membranes. Twenty-five minutes after the completion of the winding, the hot air was stopped, and the room temperature air was blown into the chamber to cool the whole. After cooling, the arranged sheets were cut in the longitudinal direction of the drum with a sharp knife to obtain a hollow fiber membrane sheet.

Using the obtained hollow fiber membrane sheet, one end was closed with a polyurethane resin and the other end was sealed so that the exposed hollow fiber membrane sheet had a sheet width of 269 mm and a sheet length of 700 mm. A hollow fiber membrane module was created by opening the end of the hollow fiber membrane that was potted after potting with a polyurethane resin. The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 350.

Using this hollow fiber membrane module, the permeability of room temperature water was measured under the same conditions as in Example 1.
The water permeability was 2.82 m ³ / hr. Further, even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the thread or feather with the hollow fiber membrane module occurred.

Example 4 A vinyl acetate resin was melt-extruded using a discharge die to obtain a continuous thread adhesive having an outer diameter of 11.5 μm. This thread-like adhesive was arranged in parallel with a polyethylene porous hollow fiber membrane (inner diameter: 580 μm, outer diameter: 720 μm), and spiral grooves (pitch: 820 μm, groove width: 650) were formed on the surface.
μm V-shaped groove, number of grooves 350) 250 diameter processed
mm was continuously wound on a drum arranged in a chamber. In the chamber, hot air of 80 ° C. was refluxed to the bottom to melt the thread-like adhesive disposed between the hollow fiber membranes. Twenty-five minutes after the completion of the winding, the hot air was stopped, and the room temperature air was blown into the chamber to cool the whole.

After cooling, the arranged sheets were cut with a sharp knife in the longitudinal direction of the drum to obtain a hollow fiber membrane sheet in which hollow fiber membranes were joined with a thread-like adhesive. The obtained hollow fiber membrane sheet had a sheet width of about 80 mm and a sheet length of 700 mm. Four hollow fiber membrane sheets are arranged, and a total of five solid polycarbonate round bars having an outer diameter of 5 mm and a length of 700 mm and a thread-like adhesive are arranged at positions sandwiching the sheets, and these are again placed in the chamber. Heated at 80 ° C. for 30 minutes. Then, the whole was cooled by sending air at normal temperature into the chamber.

Using the obtained hollow fiber membrane sheet carrying the reinforcing member, the hollow fiber membrane was potted at both ends with a polyurethane resin and then potted so that the exposed sheet width was 345 mm and the sheet length was 700 mm. By opening the ends, a hollow fiber membrane module of both ends opening type was prepared. The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 400.

Using this hollow fiber membrane module, the amount of water permeation when water at normal temperature was permeated at a pressure of 0.5 kg / cm ² was measured. The water permeability was 3.20 m ³ / hr. Further, even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the thread or feather with the hollow fiber membrane module occurred. In the air scrubbing cleaning, a state in which the air was evenly dispersed in the sheet could be observed, and there was no appearance that the flow was obstructed.

Example 5 Melted vinyl acetate resin was added to a polyester monofilament yarn (20 denier).
Using a coating die, coating was performed to a thickness of 15 μm to obtain a core-sheath type thread adhesive having an outer diameter of 69.5 μm. This thread-like adhesive was arranged in parallel with a polyethylene porous hollow fiber membrane (inner diameter: 580 μm, outer diameter: 720 μm),
250 mm in diameter with spiral grooves (V-shaped grooves with a pitch of 790 μm and groove width of 650 μm, number of grooves: 350) on the surface
, Was continuously wound on a drum arranged in a chamber.

In the chamber, hot air at 80 ° C. was refluxed to the bottom to melt the sheath material of the thread-like adhesive disposed between the hollow fiber membranes. Twenty-five minutes after the completion of the winding, the hot air was stopped, and the room temperature air was blown into the chamber to cool the whole. After cooling, the arranged sheets were cut in the longitudinal direction of the drum with a sharp knife to obtain a hollow fiber membrane sheet.

The obtained hollow fiber membrane sheet had a sheet width of about 80 mm and a sheet length of 700 mm. Four hollow fiber membrane sheets are arranged, and a total of five solid polycarbonate round bars having an outer diameter of 5 mm and a length of 700 mm and a thread-like adhesive are arranged at positions sandwiching the sheets, and these are again placed in the chamber. Heated at 80 ° C. for 30 minutes. Then, the whole was cooled by sending air at normal temperature into the chamber.

Using the obtained hollow fiber membrane sheet carrying the reinforcing body, the hollow fiber membrane was potted at both ends with a polyurethane resin and then potted so that the exposed sheet width was 345 mm and the sheet length was 700 mm. By opening the ends, a hollow fiber membrane module of both ends opening type was prepared. The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 400.

Using this hollow fiber membrane module, the amount of water permeation when water at normal temperature was permeated at a pressure of 0.5 kg / cm ² was measured. The water permeability was 3.15 m ³ / hr. Further, even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the thread or feather with the hollow fiber membrane module occurred. In the air scrubbing cleaning, a state in which the air was evenly dispersed in the sheet could be observed, and there was no appearance that the flow was obstructed.

Example 6 A 10% ethanol solution of an ethylene-vinyl acetate copolymer resin (vinyl acetate content: 19% by weight) was mixed with a polyethylene multifilament yarn (15 denier / 8 filaments, twist number: 20 turns / m) at room temperature. And drying were repeated three times to obtain ethylene-
A core-sheath type thread adhesive in which a plurality of polyethylene cores were disposed in a vinyl acetate resin was obtained. The outer shape of the obtained thread adhesive was 110 μm, and the thickness of the sheath was 10 μm.

The obtained thread-like adhesive was arranged in parallel with a polyethylene porous hollow fiber membrane (inner diameter: 580 μm, outer diameter: 720 μm), and spiral grooves (pitch: 790 μm, groove width: 65 μm) were formed on the surface.
(V-shaped groove of 0 μm, number of grooves 350) 25 diameter processed
It was wound continuously on a 0 mm drum arranged in the chamber. In the chamber, hot air of 90 ° C. was refluxed to the bottom to melt the sheath material of the thread-like adhesive disposed between the hollow fiber membranes.

25 minutes after the winding is completed, the hot air is stopped.
The whole was cooled by blowing air at room temperature into the chamber. After cooling, the arranged sheets were cut in the longitudinal direction of the drum with a sharp knife to obtain a hollow fiber membrane sheet.

The obtained hollow fiber membrane sheet was made to have a sheet width of about 80 mm and a sheet length of 700 mm. Four hollow fiber membrane sheets are arranged, and a total of five solid polycarbonate round bars having an outer diameter of 5 mm and a length of 700 mm and a thread-like adhesive are arranged at positions sandwiching the sheets, and these are again placed in the chamber. Heated at 80 ° C. for 30 minutes. Then, the whole was cooled by sending air at normal temperature into the chamber.

Using the obtained hollow fiber membrane sheet supporting the reinforcing body, the hollow fiber membrane was potted at both ends with a polyurethane resin and then potted so that the exposed sheet width was 345 mm and the sheet length was 700 mm. By opening the end, a hollow fiber membrane module of one end opening type was prepared. The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 400.

Using this hollow fiber membrane module, the amount of water permeation when water at normal temperature was permeated at a pressure of 0.5 kg / cm ² was measured. The water permeability was 3.11 m ³ / hr. Further, even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the thread or feather with the hollow fiber membrane module occurred. In the air scrubbing cleaning, a state in which the air was evenly dispersed in the sheet could be observed, and there was no appearance that the flow was obstructed.

Example 7 A spiral groove (R-shaped groove having a pitch of 680 μm, number of grooves of 350) was arranged in parallel with a polyethylene porous hollow fiber membrane (inner diameter: 580 μm, outer diameter: 720 μm).
This was continuously wound on a drum having a diameter of 250 mm. A CO2 laser (rated at 12 W) was used for the heater section 1004. After the winding was completed, the whole was left at room temperature for 20 minutes and cooled. After cooling, the arranged sheets were cut in the direction of the center axis of the drum with a sharp knife to obtain hollow fiber membrane sheets in which the hollow fiber membranes were joined with a thread-like adhesive. Using the obtained hollow fiber membrane sheet, the exposed hollow fiber membrane sheet has a sheet width of 240 mm and a sheet length of 70 mm.
One end was closed with a polyurethane resin so as to have a length of 0 mm, the other end was potted with a polyurethane resin, and then the end of the hollow fiber membrane that had been potted was opened to produce a single-ended hollow fiber membrane module. The hollow fiber membrane contained in the obtained hollow fiber membrane module was 350
It was a book. Further, the membrane area of the hollow fiber membrane module is about 0.5 mm.
It was 44 m ² . Using this hollow fiber membrane module,
Even when the filtration treatment of the highly polluted water was performed, no entanglement of the filamentous material or the feathered material with the hollow fiber membrane module occurred.

Example 8 Polyester monofilament yarn (20 denier) was coated with a molten vinyl acetate resin to a thickness of 13 μm using a coating die to obtain a core-sheath type filament having an outer diameter of 107 μm. Was.
This filament is made of a polyethylene porous hollow fiber membrane (with an inner diameter of 580).
μm, 720 μm), and a spiral groove (820 μm pitch, 650 μm groove width, V-shaped groove, groove number 350) on the surface
This was wound around a processed drum having a diameter of 250 mm. After the winding, the whole was left standing at room temperature for 25 minutes to cool the whole.

After cooling, the arranged sheets were cut with a sharp knife in the direction of the center axis of the drum to obtain a hollow fiber membrane sheet in which the hollow fiber membranes were joined by an adhesive component. Using the obtained hollow fiber membrane sheet, one end is closed with a polyurethane resin and the other end is polyurethane resin so that the exposed hollow fiber membrane sheet has a sheet width of 290 mm and a sheet length of 700 mm. After the potting, the end of the hollow fiber membrane that had been potted was opened to produce a single-ended hollow fiber module. The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 350. The membrane area of the obtained hollow fiber membrane module was 0.42 m.
^{Was 2} . Also, using this hollow fiber membrane module,
Even when the filtration treatment of the highly polluted water was performed, no entanglement of the filamentous material or the feathered material with the hollow fiber membrane module occurred.

Example 9 A polyethylene multifilament yarn (15 denier / 5 filaments, number of twists: 20 turns / m) and a 10% ethanol solution of an ethylene-vinyl acetate copolymer resin (vinyl acetate content: 19% by weight) (room temperature)
And drying were repeated three times to prepare a sea-island type filament impregnated with the resin. The resin coating thickness at that time was about 10 μm. This filament was used as a polyethylene porous hollow fiber membrane (inner diameter 580 μm, outer diameter 720 μm).
m) and spiral grooves on the surface (pitch 850 μm,
A V-shaped groove having a groove width of 650 μm, the number of grooves being 350, was wound on a drum having a diameter of 250 mm.

The drum was set in a chamber, and hot air at 90 ° C. was circulated there to melt the sea material of the filament while arranging the hollow fiber membrane and the filament. After a short time after the completion of the winding, the hot air was stopped, and normal temperature air was sent to the chamber to cool the whole. After cooling, the arranged sheets were cut with a sharp knife in the longitudinal direction of the drum to obtain a hollow fiber membrane sheet. .

Using the obtained hollow fiber membrane sheet, one end was blocked with a polyurethane resin and the other end was closed so that the exposed hollow fiber membrane sheet had a sheet width of 290 mm and a sheet length of 700 mm. After potting with a polyurethane resin, the end of the hollow fiber membrane that had been potted was opened to form a single-ended hollow fiber membrane module. The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 350. The membrane area of the obtained hollow fiber membrane module was 0.40 m ² . Further, even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the thread or feather with the hollow fiber membrane module occurred.

Example 10 An outer diameter of 9.5 was obtained by melt-extruding a vinyl acetate resin at a temperature of 100 ° C. using a discharge die.
With a continuous resin diameter of μm, it is applied to a polyethylene porous hollow fiber membrane (inner diameter: 580 μm, outer diameter: 720 μm), and spiral grooves (pitch: 820 μm, groove width: 650 μm, V-shaped grooves, number of grooves: 350) are processed. And wound continuously on a drum having a diameter of 250 mm. After winding, 25 at room temperature
The whole was left to cool for minutes.

After cooling, the arranged sheets were cut with a sharp knife in the direction of the center axis of the drum to obtain hollow fiber membrane sheets in which the hollow fiber membranes were joined by an adhesive component. Using the obtained hollow fiber membrane sheet, one end is closed with a polyurethane resin and the other end is polyurethane resin so that the exposed hollow fiber membrane sheet has a sheet width of 290 mm and a sheet length of 700 mm. After the potting, the end of the hollow fiber membrane that had been potted was opened to produce a single-ended hollow fiber module. The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 350.

Using this hollow fiber membrane module, the amount of water permeation when water at normal temperature was permeated at a pressure of 0.5 kg / cm ² was measured. The water permeability was 1.21 m ³ / hr. Further, even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the thread or feather with the hollow fiber membrane module occurred.

Example 11 An outer diameter of 9.5 was obtained by extruding vinyl acetate resin at a temperature of 100 ° C. using a transfer roll by melt extrusion.
With a continuous resin diameter of μm, it is applied to a polyethylene porous hollow fiber membrane (inner diameter: 580 μm, outer diameter: 720 μm), and spiral grooves (pitch: 820 μm, groove width: 650 μm, V-shaped grooves, number of grooves: 350) are processed. And wound continuously on a drum having a diameter of 250 mm. After winding, 25 at room temperature
The whole was left to cool for minutes.

After cooling, the arranged sheets were cut with a sharp knife in the direction of the center axis of the drum to obtain a hollow fiber membrane sheet in which hollow fiber membranes were joined by an adhesive component. Using the obtained hollow fiber membrane sheet, one end is closed with a polyurethane resin and the other end is polyurethane resin so that the exposed hollow fiber membrane sheet has a sheet width of 290 mm and a sheet length of 700 mm. After the potting, the end of the hollow fiber membrane that had been potted was opened to produce a single-ended hollow fiber module. The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 350. The membrane area of the obtained hollow fiber membrane module was 0.46 m.
^{Was 2} . Even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the thread or feather with the hollow fiber membrane module occurred.

Example 12 A polyvinyl acetate resin was melt-extruded at 100 ° C. using a nozzle to form a polyethylene porous hollow fiber membrane (inner diameter: 580 μm, outer diameter: 720 μm).
And spiral grooves on the surface (pitch: 820 μm, groove width: 6
A sheet-like material was obtained along the drum on which a V-shaped groove of 50 μm (175 grooves) was machined. Using the obtained hollow fiber membrane sheet, the exposed hollow fiber membrane sheet has a sheet width of 15
One end is sealed with a polyurethane resin so that the sheet length becomes 0 mm and the sheet length becomes 700 mm, and the other end is potted with a polyurethane resin, and then the end of the hollow fiber membrane that has been potted is opened, whereby a single-ended hollow fiber is opened. A membrane module was created.

The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 175. The membrane area of the obtained hollow fiber membrane module was 0.24 m ² . Further, even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the filamentous material and fluff with the hollow fiber membrane module occurred. <Example 13> Polyester monofilament yarn (20
(Denier) is coated with a molten vinyl acetate resin using a coating die to a thickness of 12 μm, and a core-sheath type filament having an outer diameter of 124 μm is supplied, and at the same time, a polyethylene porous hollow fiber membrane (inner diameter of 580 μm, 7
20 μm) and spiral grooves (pitch 84
A sheet-like material was obtained along a drum on which a V-shaped groove (0 μm, groove width: 650 μm, number of grooves: 175) was machined.

Using the obtained hollow fiber membrane sheet, one end was closed with a polyurethane resin and the other end was sealed so that the exposed hollow fiber membrane sheet had a sheet width of 150 mm and a sheet length of 700 mm. After potting with a polyurethane resin, the end of the hollow fiber membrane that had been potted was opened to form a single-ended hollow fiber membrane module.

The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 175. The membrane area of the obtained hollow fiber membrane module was 0.22 m ² . Further, even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the thread or feather with the hollow fiber membrane module occurred.

<Example 14> Polyethylene multifilament yarn (15 denier / 5 filaments, twist number 20)
/ M) is repeatedly impregnated with a 10% ethanol solution (room temperature) of an ethylene-vinyl acetate copolymer resin (vinyl acetate content: 19% by weight) and dried three times to obtain a sea-island type yarn impregnated with the resin. I prepared my body. The resin coating thickness at that time was about 10 μm. This filament is made of a polyethylene porous hollow fiber membrane (inner diameter 580 μm, outer diameter 720).
μm) and spiral grooves on the surface (pitch 840μ)
m, a V-shaped groove having a groove width of 650 μm, and a sheet-like material was obtained along the drum on which 175 grooves were processed.

Using the obtained hollow fiber membrane sheet material, one end was closed with a polyurethane resin and the other end was sealed so that the exposed hollow fiber membrane sheet had a sheet width of 150 mm and a sheet length of 700 mm. After potting with a polyurethane resin, the end of the hollow fiber membrane that had been potted was opened to form a single-ended hollow fiber membrane module.

The number of hollow fiber membranes contained in the obtained hollow fiber membrane module was 175. Moreover, the membrane area of the obtained hollow fiber membrane module was 0.21 m ² . Further, even when filtration treatment of highly polluted water was performed using this hollow fiber membrane module, no entanglement of the thread or feather with the hollow fiber membrane module occurred.

[0132]

According to the hollow fiber membrane sheet of the present invention,
Since the hollow fiber membranes are bonded with a thread-like adhesive, the hollow fiber membrane floats in the polluted water when a hollow fiber membrane module is created using a hollow fiber membrane sheet and high-polluted water is filtered. Therefore, it is possible to obtain a hollow fiber membrane module having a long filtration life without a thread or a feather being entangled in the hollow fiber membrane.

[Brief description of the drawings]

FIG. 1 is a perspective view of a hollow fiber membrane sheet according to the present invention.

FIG. 2 is a schematic cross-sectional view of an example of the hollow fiber membrane sheet of the present invention.

FIG. 3 is a schematic cross-sectional view of another example of the hollow fiber membrane sheet according to the present invention.

FIG. 4 is a schematic cross-sectional view of another example of the hollow fiber membrane sheet according to the present invention.

FIG. 5 is a schematic cross-sectional view of another example of the hollow fiber membrane sheet according to the present invention.

FIG. 6 is a schematic cross-sectional view of another example of the hollow fiber membrane sheet according to the present invention.

FIG. 7 is a schematic cross-sectional view of another example of the hollow fiber membrane sheet according to the present invention.

FIG. 8 is a schematic diagram illustrating an example of a method for producing a hollow fiber membrane sheet according to the present invention.

FIG. 9 is a schematic diagram showing a surface of a drum used in the manufacturing method shown in FIG. 8;

FIG. 10 is a schematic diagram illustrating another example of the method for producing a hollow fiber membrane sheet according to the present invention.

FIG. 11 is a schematic diagram showing a surface of a drum used in the manufacturing method shown in FIG. 10;

FIG. 12 is a schematic view for explaining another example of the method for producing a hollow fiber membrane sheet according to the present invention.

FIG. 13 is a schematic view illustrating another example of the method for producing a hollow fiber membrane sheet according to the present invention.

FIG. 14 is a schematic view showing the surface of a drum used in the manufacturing method shown in FIGS. 12 and 13.

FIG. 15 is a schematic view illustrating another example of the method for producing a hollow fiber membrane sheet according to the present invention.

FIG. 16 is a schematic diagram showing a surface of a drum used in the manufacturing method shown in FIG.

FIG. 17 is a schematic cross-sectional view showing a cross section of a nozzle used in the manufacturing method of FIG.

FIG. 18 is a schematic view illustrating another example of the method for producing a hollow fiber membrane sheet according to the present invention.

FIG. 19 is a schematic diagram showing a surface of a drum used in the manufacturing method shown in FIG. 18;

FIG. 20 is a schematic cross-sectional view showing a cross section of a nozzle used in the manufacturing method shown in FIG.

FIG. 21 is a schematic view showing an example of the hollow fiber membrane module of the present invention.

[Explanation of symbols]

 0; Hollow fiber membrane sheet 1; Hollow fiber membrane 2: Adhesive 3: Filament adhesive 4: Joint 5; Core 6; Sheath 7; Reinforcing body 8; Potting resin 9; r; radius L; groove depth c; clearance 1001; bobbin 1002; moving base 1003; guide roll 1004; heater section 1005; support member 1006; drum 1201; bobbin 1202; moving base 1203; guide roll 1204; bobbin 1205; Roll 1206; Impregnating roll 1207; Excess adhesive component removing rolls 1208; Container 1209; Support 1210; Drum 1401; Bobbin 1402; Moving base 1403; Guide roll 1404; Quantitative feeder 1405; Transport pipe 1406; Nozzle 1407; Body 1408; drum 1501; transfer roll 1 02; Back roll 1503; Container 1504; Support 1701; Bobbin 1702; Guide rolls 1703; Cylindrical drum 1704; Quantitative feeder 1705; Liquid feed pipe 1706; Nozzle 1707; Take-up roll 1708; Cutting machine 1901; Flow path 1902; Adhesive component flow path 1903; Adhesive component flow path 1904; Micropore 1905; Void 2001; Bobbin 2002; Guide rolls 2003; Bobbin 2004; Guide rolls 2005; Impregnation roll 2006; 2007; container 2008; groove roll 2009; cylindrical drum 2010; take-up roll 2011;

Continued on the front page (31) Priority claim number Japanese Patent Application Hei 9-67495 (32) Priority date Hei 9 (1997) March 6 (33) Priority claim country Japan (JP) (31) Priority claim number Special Nippon Hei 9-68947 (32) Priority date Hei 9 (1997) March 7 (33) Priority claiming country Japan (JP) (31) Priority number No. 9-82438 (32) Priority date Hei 9 (1997) March 17 (33) Country of priority claim Japan (JP) (72) Inventor Masatoshi Kamada 4-60 Sunadabashi, Higashi-ku, Nagoya City, Aichi Prefecture Mitsubishi Rayon Co., Ltd. Product Development Laboratory (72) Inventor Ikuo Kinoshita 4-160 Sunadabashi, Higashi-ku, Nagoya City, Aichi Prefecture Inside Mitsubishi Rayon Co., Ltd. Product Development Laboratory (72) Inventor Atsushi Nakashima 4-1-1-60 Sunadabashi, Higashi-ku, Nagoya City, Aichi Prefecture Mitsubishi Rayon Co., Ltd. Product Development Laboratory

Claims (17)

[Claims] 1. A large number of hollow fiber membranes are arranged in a sheet shape, and at least a part of adjacent hollow fiber membranes is
A hollow fiber membrane sheet, which is joined at the outer periphery of the hollow fiber membrane. 2. The hollow fiber membrane sheet according to claim 1, wherein the ratio of the area of the bonding portion to the entire area of the outer peripheral portion of the hollow fiber membrane is at least 2%. 3. The hollow fiber membrane sheet according to claim 1, wherein the joining portions of the hollow fiber membranes are joined by heat fusion. 4. The hollow fiber membrane sheet according to claim 1, wherein the hollow fiber membranes are joined by a thread-like adhesive. 5. A thread-like adhesive comprising an adhesive component and a support component for supporting the adhesive component.
The hollow fiber membrane sheet according to the above. 6. The hollow fiber membrane according to claim 5, wherein the thread-like adhesive has a core-sheath structure composed of a sheath made of an adhesive component and a thread-like core made of a support component. Sheets. 7. The hollow fiber membrane sheet according to claim 5, wherein the thread-like adhesive has a sea-island structure consisting of a sea part composed of an adhesive component and a thread-like island part composed of a support component. Stuff. 8. The hollow fiber membrane sheet according to claim 1, wherein at least one reinforcing body is arranged in the sheet. 9. The hollow fiber membrane sheet according to claim 8, wherein the reinforcing member is a rod having higher rigidity than the hollow fiber membrane. 10. The hollow fiber membrane sheet according to claim 8, wherein the hollow fiber membranes and / or the hollow fiber membrane and the reinforcing member are joined by a thread-like adhesive. 11. A side portion of the drawn-out hollow fiber membrane is heated to a temperature equal to or higher than a melting point of a constituent material of the hollow fiber membrane to form a streak-like molten portion on a side portion of the hollow fiber membrane. The fiber membrane is inserted into a groove continuously and helically spirally and circumferentially drilled in the circumferential direction of the surface of the cylindrical drum, and wound around the cylindrical drum with the melted portions of the adjacent hollow fiber membranes brought close to each other, A method for producing a hollow fiber membrane sheet, wherein adjacent hollow fiber membranes are fused and joined at a fusion portion, and the formed hollow fiber membrane array tubular body is cut open in parallel with the center axis of the drum. . 12. An adhesive is applied to the side of the drawn-out hollow fiber membrane in a streak shape in the longitudinal direction of the hollow fiber membrane, and then the hollow fiber membrane is spirally continuous and parallel in the circumferential direction. Into a groove on the surface of a cylindrical drum with a helical groove having a number of grooves formed on the surface, winding the hollow fiber membrane around the cylindrical drum with the adhesive application portions of adjacent hollow fiber membranes close to each other, A hollow fiber membrane sheet comprising: joining hollow fiber membranes adjacent to each other on a drum with an adhesive on the side of the hollow fiber membrane; and cutting the formed hollow fiber membrane array cylindrical body parallel to the center axis of the drum. Manufacturing method of the product. 13. The method for producing a hollow fiber membrane sheet according to claim 12, wherein the adhesive is applied to the hollow fiber membrane by a transfer roll. 14. A number of the drawn out hollow fiber membranes are aligned in a parallel direction, an adhesive is applied to the side of the hollow fiber membrane in a streak shape in the longitudinal direction of the hollow fiber membrane, and each of the hollow fiber membranes is formed. , Are inserted into each groove of a grooved cylindrical drum having a large number of grooves that are densely drilled in parallel with the circumferential direction, and the adhesive applying portions of the adjacent hollow fiber membranes are brought close to each other to form a cylindrical drum surface. A method for producing a hollow fiber membrane sheet, wherein the hollow fiber membranes are arranged side by side or wrapped, and adjacent hollow fiber membranes are joined together on a grooved drum with an adhesive on the side of the hollow fiber membrane. 15. The drawn-out hollow fiber membrane is inserted into a groove on the surface of a helically grooved cylindrical drum having a plurality of grooves that are helically continuous in the circumferential direction and that are formed in parallel. And supplying the thread-like adhesive between the grooves of the cylindrical drum with the spiral groove so that the hollow fiber membrane and the thread-like adhesive are alternately arranged. A hollow fiber membrane characterized by joining hollow fiber membranes adjacent to each other on a cylindrical drum with a thread-like adhesive, and cutting the formed hollow fiber membrane array cylindrical body parallel to the center axis of the drum. A method for producing a sheet. 16. A plurality of hollow fiber membranes drawn out are aligned in a parallel direction, and each hollow fiber membrane is densely drilled in parallel with a circumferential direction to form a hollow cylindrical drum having a large number of grooves. Each of the grooves is inserted into the groove and drawn or wound around each groove on the surface of the cylindrical drum, and the thread adhesive is formed between the groove and the groove of the grooved cylindrical drum so that the hollow fiber membrane and the thread adhesive are alternately arranged. Wherein the hollow fiber membranes are supplied in close proximity to the hollow fiber membranes, and adjacent hollow fiber membranes are joined to each other on a grooved cylindrical drum via a thread-like adhesive. . 17. Both ends of the hollow fiber membrane sheet according to any one of claims 1 to 10 or the other end of the sheet having one end sealed off are fixed with a potting resin. A hollow fiber membrane module, wherein an end of the hollow fiber membrane is opened in the water collecting pipe.