JP4300090B2 - Electrolytic membrane for electrolyzed water generation - Google Patents

Description

  The present invention relates to an electrolytic diaphragm for generating electrolyzed water used in an electrolyzed water generating apparatus or the like for electrolyzing water to obtain electrolyzed water of acidic water and alkaline water.

  When electrolysis is performed by adding a small amount of chloride to water, acidic water is generated on the anode side and alkaline water is generated on the cathode side. This acidic water is known to have a sterilizing effect, and unlike chemicals such as disinfectants and disinfectants, it has little persistence and has very little effect on the human body. It is used as sterilized water in the medical field, agricultural field, and the like. On the other hand, alkaline water is known to have a cleaning effect on lipid / protein-based soils and the like, and is used as sterilized cleaning water in the food / hygiene field and the industrial field. As described above, the two types of electrolyzed water generated by electrolysis are widely used from the fields of food and hygiene to the fields of medicine, agriculture, and industry. Commercial electrolyzed water generators have been developed and are in widespread use.

The electrode structure of the electrolyzed water generator is known to have a laminated structure using flat electrodes and a cylindrical structure using annular electrodes, but the capacity of electrolyzed water generation depends on the number of electrolytic cells arranged. From the viewpoint that the design can be changed relatively easily, an electrolyzed water generating apparatus having an electrode having a laminated structure has become mainstream. An electrolyzed water generating apparatus having a laminated structure electrode is provided with an electrolyzed water generating electrolysis membrane disposed between a cathode electrode plate and an anode electrode plate, which are alternately arranged vertically, so that the cathode electrolysis is separated by the membrane. The tanks and the anode electrolytic tanks are alternately formed, and a plurality of these are arranged. By supplying water from the lower part of each of the cathode electrolytic cell and the anode electrolytic cell, and causing electrolysis through the water through the cathode electrolytic cell and the anode electrolytic cell, alkaline water and acidic water are generated. It has become. The two types of electrolyzed water produced can be separately discharged and collected (for example, Patent Document 1).
For example, as shown in FIG. 7, the electrolytic membrane for generating electrolyzed water has a resin-made grid-like support 15 on both surfaces of a flat microporous membrane 14 and an ion exchange membrane made of resin for reinforcement. A structure 17 in which the microporous membrane 14 or the ion exchange membrane and the lattice support 15 are integrated is formed. In addition, the lattice-like support 15 is formed with protrusions 16 for keeping the distance between the electrode plate and the electrolytic membrane for generating electrolyzed water at a constant interval so that the electrode plate and the electrolytic membrane for generating electrolyzed water are not in close contact with each other. Has been.
Japanese Utility Model Publication No. 6-48888

However, the lattice-like support 15 and the protrusions 16 are not porous bodies unlike the microporous membrane 14 and the ion exchange membrane, which are base materials, and therefore the effective area of the electrolytic diaphragm for generating electrolyzed water is reduced. Since the electrical resistance between the electrodes is increased, there is a problem in that electrical energy loss is increased when electrolyzed water is generated.
Further, since the resin microporous membrane 14 and the ion exchange membrane are insufficient in rigidity as an electrolytic diaphragm for generating electrolyzed water, a support such as the lattice-like support 15 is essential, and electrolysis is performed. As the electrolytic membrane for water generation, a structure 17 in which the microporous membrane 14 or the ion exchange membrane and the lattice-like support 15 are integrated must be formed. There is also a problem that the electrode interval cannot be reduced and the electrolyzed water generating device cannot be made compact.
Therefore, in view of such conventional problems, the present invention provides an electrolytic diaphragm for electrolyzed water generation used in an electrolyzed water generating apparatus or the like, and does not reduce the effective area of the electrolyzed water generating electrolysis diaphragm, and also supports a lattice. An object of the present invention is to provide an electrolytic diaphragm for generating electrolyzed water that does not require a body.

In order to achieve the above object, the electrolytic membrane for producing electrolyzed water according to the present invention comprises a microporous linear protrusion on at least one surface of a microporous membrane substrate as claimed in claim 1. And
The electrolytic membrane for generating electrolyzed water according to claim 2 is the electrolytic membrane for generating electrolyzed water according to claim 1, wherein the microporous linear protrusions are provided on both surfaces of the microporous membrane substrate. It is characterized by becoming.
The electrolytic membrane for producing electrolyzed water according to claim 3 is the electrolyzed membrane for producing electrolyzed water according to claim 2, wherein the microporous linear protrusions provided on both surfaces of the microporous membrane substrate are respectively provided. The microporous linear projections are formed so as to overlap each other (opposite state) or cross each other.
An electrolytic membrane for generating electrolyzed water according to claim 4 is the electrolytic membrane for generating electrolyzed water according to claim 1, wherein the microporous membrane substrate having the microporous linear protrusions on one side is used as the microporous membrane substrate. Folding so that the porous linear protrusions are on the outside to form a laminated state, and the microporous diaphragm base material forming the laminated state apparently has the microporous linear protrusions on both sides thereof Features.
The electrolytic membrane for producing electrolyzed water according to claim 5 is the electroporous membrane for producing electrolyzed water according to claim 4, wherein the microporous material provided on one surface of the microporous membrane substrate in the laminated state. The microporous linear protrusion is formed so that the linear protrusion and the microporous linear protrusion provided on the other surface overlap each other (opposed state) or intersect with each other. To do.
The electrolytic membrane for generating electrolyzed water according to claim 6 is the electroporous membrane for generating electrolyzed water according to claim 5, wherein the microporous material provided on one surface of the microporous membrane substrate in the laminated state. The microporous linear protrusion is formed so that the linear protrusion and the microporous linear protrusion provided on the other surface intersect each other.
The electrolytic membrane for generating electrolyzed water according to claim 7 is the electrolytic membrane for generating electrolyzed water according to any one of claims 1 to 6, wherein the microporous linear protrusion is the microporous membrane substrate. It is characterized by being made of the same material.
The electrolytic membrane for generating electrolyzed water according to claim 8 is the electrolytic membrane for generating electrolyzed water according to claim 7, wherein the microporous linear protrusion is integrally formed with the microporous membrane substrate. It is characterized by being.
The electrolytic membrane for producing electrolyzed water according to claim 9 is the electrolyzed membrane for producing electrolyzed water according to any one of claims 1 to 8, wherein the microporous linear protrusions are oriented in a substantially vertical direction. It is characterized by a plurality of linear protrusions.

The electrolytic membrane for generating electrolyzed water of the present invention is provided with microporous linear protrusions on at least one surface of a flat microporous diaphragm base material, so that sufficient rigidity is imparted to the microporous diaphragm base material itself. In addition, since there is no need to separately combine and laminate the conventional lattice-like supports, the manufacturing can be simplified, and the electrode interval can be narrowed, contributing to the downsizing of the electrolyzed water generating apparatus. In addition, since the electrolytic membrane for generating electrolyzed water of the present invention includes not only the membrane substrate but also the linear protrusions made of a microporous body, the effective area of the electrolytic membrane for generating electrolyzed water is reduced as in the prior art. There is no such thing as increasing electrical resistance and increasing electrical energy loss.
Further, if the microporous linear protrusion and the microporous diaphragm base material are made of the same material, it becomes possible to form the microporous linear protrusion simultaneously with the formation of the microporous diaphragm base material. The reduction facilitates the production of the electrolytic diaphragm for generating electrolyzed water.

The electrolytic membrane for generating electrolyzed water of the present invention is a sheet-like material having microporous linear protrusions on at least one surface of a flat microporous membrane substrate.
The microporous linear projections mainly include (1) a function of imparting rigidity to the diaphragm base, (2) a function of a flow channel for passing water for generating electrolyzed water, and (3) during electrolysis. It has the function of a gas discharge path that makes it easy to discharge the generated cracked gas.
As described above, the electrolytic membrane for generating electrolyzed water of the present invention comprises the microporous linear protrusions on at least one surface of the flat microporous diaphragm base material, and thus is sufficient for the microporous diaphragm base material itself. In addition, since it is not necessary to separately combine and laminate the conventional lattice-like supports, it is possible to simplify the manufacturing process and to narrow the electrode interval, thereby contributing to the downsizing of the electrolyzed water generating apparatus. In addition, since the electrolytic membrane for generating electrolyzed water of the present invention includes not only the membrane substrate but also the linear protrusions made of a microporous body, the effective area of the electrolytic membrane for generating electrolyzed water is reduced as in the prior art. There is no such thing as increasing the electrical resistance.

The shape of the microporous linear protrusion is not particularly limited as long as it is a shape considering the rigidity and gas discharge required for the electrolytic membrane for generating electrolyzed water as described above. As shown in FIGS. 2 and 4, it is preferable to arrange a plurality of parallel linear or wavy microporous linear projections 7 and 8. The microporous linear protrusion does not necessarily need to be a continuous line, and may be an intermittent line.
In addition, the microporous linear protrusions are preferably formed so as to be oriented substantially in the vertical direction regardless of whether they are linear or wavy. By doing in this way, the above-mentioned gas discharge property becomes favorable. In addition, in a normal electrolyzed water generating apparatus, the electrolyzed water generating water supply port is downward and the generated electrolyzed water outlet is upward as viewed from the position of each electrolyzer. Is formed so as to be oriented in a substantially vertical direction, the flow path of the water for generating electrolyzed water is formed in a substantially vertical direction, and the flow efficiency is good. In addition, the vertical direction said here is a vertical direction of the product of the electrolytic diaphragm for electrolyzed water production | generation, and is a vertical direction at the time of using for an electrolyzed water production | generation apparatus.

The microporous linear protrusions may be provided only on one side of the microporous diaphragm base material, or may be provided on both sides.
When used in an electrolyzed water generating apparatus having a normal design in which only one electrolyzed water generating electrolysis membrane is disposed between each of the alternately arranged cathode electrode plates and anode electrode plates, as described above. In addition, since it is important to maintain the distance between the electrode plate and the electrolytic diaphragm for generating electrolyzed water, which is common to both functions of the flow channel and gas discharge channel of the microporous linear projection, the microporous linear projection is fine. It is preferable to provide it on both surfaces of a porous diaphragm base material.
However, even if the microporous linear protrusion is provided only on one side of the microporous diaphragm base material, this is not limited as long as it is configured as follows. That is, when the microporous linear protrusions are provided only on one side of the microporous diaphragm base, the microporous diaphragm base is arranged so that the microporous linear protrusions 8 are on the outside as shown in FIG. 6 is bent at its center to form a laminated state, and the microporous diaphragm base material 6, 6 forming this laminated state apparently has microporous linear protrusions 8, 8 on both sides thereof. preferable. In this way, when the electrolytic membrane for generating electrolyzed water of the present invention is actually used in an electrolyzed water generating device, the microporous membrane substrate 6 as shown in FIG. Since the electrolytic water generating electrolytic membrane 5 formed so as to provide the porous linear protrusions 7 and 7 is in substantially the same use state, the electrolysis in which the microporous linear protrusions 7 and 7 are previously provided on both surfaces. Similar to the water generating electrolytic diaphragm 5, both functions of the flow channel and the gas discharge channel of the microporous linear protrusion can be sufficiently achieved.

When the microporous linear protrusions are previously provided on both surfaces of the microporous diaphragm base material, the microporous linear protrusions on the front and back surfaces of the microporous diaphragm base material overlap each other ( It is preferable to form the microporous linear protrusions so as to form a facing state or a crossing state. For example, in the electrolytic membrane 5 for generating electrolyzed water shown in FIGS. 2 and 3, the microporous linear protrusions 7 on the front and back surfaces of the microporous membrane substrate 6 are completely overlapped with each other (opposed state). The microporous linear protrusions 7 are formed so as to form Also, on at least one of the front and back surfaces of the microporous diaphragm base material, a plurality of parallel wavy microporous linear protrusions, or a plurality of parallel strips of slanted linear microporous linear If the protrusions are formed, the microporous linear protrusions on the front and back surfaces of the microporous diaphragm base material cross each other. If a plurality of parallel straight microporous linear protrusions that are not skewed are arranged on the front and back surfaces of the microporous diaphragm base material, the microporous linear protrusions on the front and back surfaces When the electrolyzed water generating device is assembled by superimposing the electrolyzed water generating electrolysis membrane on the electrode plate, the electrolyzed water generating electrolysis membrane receives pressure from the thickness direction. In addition, since the electrolytic membrane for generating electrolyzed water is placed in contact with the electrode plate when used in the electrolyzed water generating device, the electrolytic membrane for generating electrolyzed water is preferably deformed in a wave shape. Absent.
In addition, the microporous diaphragm base material provided with the microporous linear protrusions only on one side is folded so that the microporous linear protrusions are on the outer side to form a laminated state. Even in the case where the both sides of the porous diaphragm base material are formed so as to have microporous linear protrusions, the microporous linear protrusions on one side of the microporous diaphragm base material forming the laminated state and the other It is preferable to form the microporous linear protrusions so that the microporous linear protrusions on the surface overlap each other (opposite state) or intersect. However, when the microporous linear protrusions are formed so that both the microporous linear protrusions do not substantially intersect with each other and only overlap with each other, the microporous linear protrusions are folded into a laminated state. Since the porous membrane base material does not usually make the laminated portion bonded, it is difficult to maintain the overlapping state constantly and it is difficult to control. It is more preferable to form the microporous linear protrusions so that the porous linear protrusions intersect each other. For example, as shown in FIG. 4 and FIG. 5, if formed so as to arrange a plurality of parallel wavy microporous linear protrusions 8, the microporous diaphragm substrate 6, 6, the microporous linear protrusion 8 on one surface and the microporous linear protrusion 8 on the other surface cross each other. As another example, as shown in FIG. 6, a plurality of parallel and slanted linear microporous linear protrusions 9 may be arranged.

Explaining the method for producing the electrolytic membrane for generating electrolyzed water, a raw material mixture in which a polyolefin resin, an inorganic powder and a plasticizer are mixed is formed into a sheet by an extrusion method, and then a semi-molten sheet is formed between a pair of molding rolls. By performing pressure molding, linear projections of the same material as the substrate can be provided on one or both sides of the sheet. Thereafter, the entire sheet including the linear protrusions is made microporous by extracting and removing the plasticizer in the sheet using an extractant, and the microporous diaphragm base material is provided with the microporous linear protrusions. An electrolytic membrane for water generation can be obtained.
Thus, when the microporous linear protrusion and the microporous diaphragm base material are made of the same material, the microporous linear protrusion can be formed simultaneously with the formation of the microporous diaphragm base material. The number of manufacturing steps can be reduced, and the production of the electrolytic diaphragm for generating electrolyzed water is facilitated.
In addition, the outer peripheral surface of the forming roll is formed with grooves engraved in a predetermined pattern to form linear protrusions, and when the semi-molten sheet is pressure-formed between the forming rolls. In addition, when the sheet in a semi-molten state is press-fitted into the groove, linear protrusions are formed on the entire surface of the sheet.

Next, the electrolyzed water generating apparatus using the electrolyzed water generating electrolytic membrane of the present invention will be described.
The electrolyzed water generating apparatus 10 using the electrolyzed water generating electrolytic membrane of the present invention has the same configuration as the conventional example, and as shown in FIG. 1, the cathode electrode plate 1 and the anode electrode plate 2 arranged vertically. An electrolytic diaphragm 5 for electrolyzed water generation is disposed between the cathode electrolytic cell 3 and the anode electrolytic cell 4, in which the cathode electrode plate 1 and the anode electrode plate 3 are separated by the electrolytic water generating electrolytic membrane 5. It has a configuration in which a plurality are arranged. In the cathode electrolytic cell 3 and the anode electrolytic cell 4, pipes 11 for supplying water to the respective cells from the lower part of the respective cells are arranged, and in the process in which the supplied water passes through the cathode electrolytic cell 3 and the anode electrolytic cell 4. It is electrolyzed to produce alkaline water and acidic water. Furthermore, a pipe 13 communicating with each cathode electrolytic cell 3 and a pipe 12 communicating with each anode electrolytic cell 4 are provided, and alkaline water generated in each electrolytic cell 3, 4 from these pipes 13, 12 It is structured to discharge and collect acidic water separately.

Examples of the present invention will be described below in detail together with comparative examples, but the present invention is not limited to these examples.
Example 1
22 mass% of high density polyethylene resin powder having a weight average molecular weight of 2 million as a polyolefin resin and 25 mass% of silicon dioxide fine powder having a specific surface area of 200 m ² / g and a moisture content of 2.0 mass% as an inorganic powder, After mixing 53% by mass of mineral oil as a plasticizer and extruding a semi-molten sheet while heating and melting and kneading with a twin-screw extruder, the sheet is immediately subjected to a predetermined pattern for forming linear protrusions on the outer peripheral surface. Rolled through a pair of grooved forming rolls each having a groove formed therein, and having a plurality of linear linear protrusions parallel to both sides, the thickness of the membrane substrate portion is 200 μm A sheet was obtained. Next, the mineral oil was extracted and removed using decane, which is a kind of hydrocarbon solvent, and further dried at 100 ° C. As shown in FIGS. 2 and 3, 47 mass% of polyethylene resin, silicon dioxide powder, Electrolyzed water having a plurality of parallel, linear, linear microporous linear projections 7 having a height of 1.4 mm on both surfaces and a thickness of the membrane substrate portion of 200 μm. A production electrolytic diaphragm 5 was obtained. The grooved forming roll used was a groove pattern designed on the outer peripheral surface so that the linear protrusions 7 shown in FIGS. 2 and 3 could be formed.

(Example 2)
An electrolytic diaphragm for generating electrolyzed water having linear protrusions on one side was prepared using the same raw materials as in Example 1. That is, 22% by mass of a high density polyethylene resin powder having a weight average molecular weight of 2 million as a polyolefin resin and 25% by mass of a silicon dioxide fine powder having a specific surface area of 200 m ² / g and a moisture content of 2.0% by mass as an inorganic powder. In addition, 53% by mass of mineral oil is mixed as a plasticizer, and after the semi-molten sheet is extruded while being heated and melted and kneaded by a twin screw extruder, the sheet is immediately formed to form linear protrusions on the outer peripheral surface. A diaphragm having a plurality of wavy line-shaped protrusions parallel to one side, rolled through a pair of forming rolls having a grooved forming roll engraved with a predetermined pattern and a non-grooving forming roll. A sheet having a substrate part thickness of 100 μm was obtained. Next, the mineral oil was extracted and removed using decane, which is a kind of hydrocarbon solvent, and further dried at 100 ° C. As shown in FIG. 4, 47% by mass of polyethylene resin and 53% by mass of silicon dioxide powder were obtained. %, A plurality of parallel wavy microporous linear projections 8 having a height of 1.4 mm on one surface, and a microporous membrane base having a membrane substrate portion thickness of 100 μm Material 6 was obtained. The microporous diaphragm base material 6 obtained in this way is folded at its center to form a laminated state, and as shown in FIG. 5, the microporous diaphragm base materials 6 and 6 forming the laminated state are apparently Electrolysis with a thickness of 200 μm in the thickness of the laminated membrane base material portion configured to include a plurality of parallel wavy microporous linear protrusions 8, 8 having a height of 1.4 mm on both surfaces. An electrolysis membrane 5 for water generation was obtained. The grooved forming roll used was a groove pattern designed on the outer peripheral surface so that the linear protrusions 8 shown in FIG. 4 could be formed.

(Comparative example)
A grid-like support 15 shown in FIG. 7 was produced using polyvinyl chloride. That is, as shown in FIG. 7, the lattice-like support 15 is formed by providing longitudinal lattices with a width of 2 mm at intervals of 6 mm and transverse lattices with a width of 1.5 mm at intervals of 10 mm. The projection 16 having a height of 0.5 mm is provided at each intersection of the lattice. Note that the thickness of the grid-like support including the protrusions 16 is 2.0 mm. On the other hand, as the microporous film 14, a flat microporous film having a thickness of 200 μm and having no linear protrusions was produced using the same raw materials as in Example 1. That is, 22% by mass of a high density polyethylene resin powder having a weight average molecular weight of 2 million as a polyolefin resin and 25% by mass of a silicon dioxide fine powder having a specific surface area of 200 m ² / g and a moisture content of 2.0% by mass as an inorganic powder. In addition, 53% by mass of mineral oil as a plasticizer is mixed, and after extruding a semi-molten sheet while heating and melting and kneading with a twin-screw extruder, the sheet is immediately formed into a grooveless forming roll having no grooves on the outer peripheral surface. The sheet was rolled through a pair of forming rolls to obtain a sheet having a thickness of 200 μm. Next, the mineral oil is extracted and removed using decane which is a kind of hydrocarbon solvent, and further dried at 100 ° C., and is composed of 47% by mass of polyethylene resin and 53% by mass of silicon dioxide powder. A flat microporous membrane having a thickness of 200 μm was obtained. An electrolytic diaphragm for generating electrolyzed water, which is an integrated structure 17, was obtained by adhering the polyvinyl chloride lattice-like support 15 to both surfaces of the flat microporous membrane 14 using an adhesive.

  Table 1 shows the results of measuring the rigidity and the electric resistance during electrolysis for each of the electrolytic diaphragms for producing electrolyzed water of Examples 1 and 2 and the comparative example.

From Table 1, the electrolytic membranes for generating electrolyzed water of Example 1 and Example 2 of the present invention are provided with microporous linear protrusions, so that the rigidity of the diaphragm with no linear protrusions is increased. Improvement was observed. That is, the flat microporous membrane constituting the electrolytic membrane for generating electrolyzed water of the comparative example had a rigidity value as large as 23 ° and lacked rigidity when there was no grid-like support. In addition, by improving the rigidity, it is no longer necessary to separately combine and laminate a lattice-like support like the electrolytic membrane for generating electrolyzed water of the comparative example, so compared with the electrolytic membrane for generating electrolyzed water of the comparative example. As a result, the thickness can be reduced by about 29%, and the distance between the electrodes can be reduced.
In addition, with respect to the electric resistance during electrolysis, the electrolytic diaphragm for generating electrolyzed water of Examples 1 and 2 is about 30% more electrically than the electrolytic diaphragm for generating electrolyzed water provided with the grid-like support of the comparative example. It has been confirmed that the resistance has been reduced and the electrical energy loss during electrolyzed water generation can be reduced.
In addition, from the comparison between Example 1 and Example 2, even when the electrolytic membrane for electrolyzed water generation is formed by bending one sheet and laminating it into two layers, the electrolyzed water generation formed as it is by one sheet Compared to the electrolytic diaphragm for use, it was confirmed that the rigidity and electric resistance were not inferior at all and could be used in the same manner.

The schematic block diagram of the electrolyzed water generating apparatus which has the electrode plate of the laminated structure of this invention The top view of the electrolytic diaphragm for electrolyzed water production | generation of this invention Enlarged partial sectional view of FIG. The top view of the electrolytic diaphragm for electrolyzed water production | generation of this invention Enlarged partial cross-sectional view of FIG. The top view of the electrolytic diaphragm for electrolyzed water production | generation of this invention Plan view of a conventional lattice support

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cathode electrode plate 2 Anode electrode plate 3 Cathode electrolytic cell 4 Anode electrolytic cell 5 Electrolytic water production | generation electrolytic membrane 6 Microporous membrane base material 7 Microporous linear protrusion 8 Microporous linear protrusion 9 Microporous linear shape Protrusion 10 Electrolyzed water generator 11 Piping 12 Piping 13 Piping 14 Microporous membrane 15 Grid-like support 16 Protrusion 17 Structure

Claims (9)

  An electrolytic diaphragm for generating electrolyzed water, comprising a microporous linear protrusion on at least one surface of a microporous diaphragm base material.   2. The electrolytic diaphragm for generating electrolyzed water according to claim 1, wherein the microporous linear protrusions are provided on both surfaces of the microporous diaphragm base material.   The microporous linear protrusions are formed so that the microporous linear protrusions respectively provided on both surfaces of the microporous diaphragm base material overlap each other (opposed state) or intersect. The electrolytic diaphragm for electrolyzed water generation according to claim 2.   The microporous diaphragm substrate having the microporous linear protrusions on one side is folded so that the microporous linear protrusions are on the outer side to form a laminated state. The electrolytic diaphragm for generating electrolyzed water according to claim 1, wherein the microporous linear protrusions are apparently provided on both sides thereof.   The microporous linear protrusion provided on one surface of the microporous diaphragm base material in the laminated state and the microporous linear protrusion provided on the other surface overlap each other (opposite state) or 5. The electrolytic membrane for generating electrolyzed water according to claim 4, wherein the microporous linear protrusions are formed so as to form an intersecting state.   The microporous linear protrusions provided on one surface of the microporous diaphragm base material in the laminated state and the microporous linear protrusions provided on the other surface intersect each other. 6. The electrolytic diaphragm for generating electrolyzed water according to claim 5, wherein porous linear protrusions are formed.   The electrolytic diaphragm for generating electrolyzed water according to any one of claims 1 to 6, wherein the microporous linear protrusions are made of the same material as the microporous diaphragm base material.   8. The electrolytic diaphragm for generating electrolyzed water according to claim 7, wherein the microporous linear protrusion is formed integrally with the microporous diaphragm base material. The electrolytic diaphragm for generating electrolyzed water according to any one of claims 1 to 8, wherein the microporous linear protrusions are a plurality of linear protrusions oriented in a substantially vertical direction.

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