JPH11290626A - Antimicrobial filter and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an antimicrobial performance while an available area thereof is enabled to be secured large by a method wherein a thin film of a binder material is formed on a surface of a porous base material, and the surface of the porous base material is covered by a fine particle-like antimicrobial material via the thin film of the binder material. SOLUTION: An antimicrobial filter mounted on an air conditioning apparatus is manufactured by a method wherein a thin film of a binder material is formed on a surface of a porous base material, and the surface of the porous base material is covered by an antimicrobial material via the thin film of the binder material. When such microbial filter is manufactured, an aerosol is formed by spraying the binder material from an aerosol generator 3, and the binder material thin film is formed on the porous base material surface by passing the porous base material through the aerosol in a container 2. Then, the porous base material surface is treated so as to be covered by the antimicrobial material via the binder material thin film in a container 5 in which an aerosol generator 6 for spraying the antimicrobial material is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antibacterial filter mounted on an air conditioner such as an air purifier to capture airborne microorganisms contaminating indoor air and to suppress the growth of microorganisms in the filter, and a method of manufacturing the same. Things.

[0002]

2. Description of the Related Art In recent years, as the insulation and airtightness of a living space have been increased in order to enhance the cooling and heating effects, contamination of indoor air has become a problem. Substances that pollute indoor air include dust, odor, harmful gas, airborne microorganisms, and the like.
As for “dust removal” for removing dust, there are a mechanical filter using a nonwoven fabric or the like, an electrostatic filter using static electricity, and the like. As for "deodorization" for removing odor, there are activated carbon using physical adsorption, a deodorizing material using a catalytic reaction, and a deodorizing method using an oxidation reaction of ozone. Regarding "gas removal" for removing harmful gases such as nitrogen oxides, recently, a dedicated removal filter has been developed and marketed.

[0003] On the other hand, "bactericidal" for removing airborne microorganisms
Is in the development stage, and various types of patents have been filed. JP-A-2-41166 describes a filter for disinfection in which a lytic enzyme such as deoxyribonuclease is supported on a fiber, a porous membrane, ceramic or the like.
JP-A-6-293216 describes an air filter having an antibacterial deodorizing function in which a powdery antibacterial deodorizing material is impregnated or adsorbed on a gas permeable material. JP-A-7-31812 describes an antibacterial filter in which silica gel is impregnated or coated with a silver thiosulfato complex.

Japanese Patent Application Laid-Open No. 7-80053 describes a sterilization filter using a fiber to which a vinyl copolymer of a pyridinium salt, a humectant is adhered, and an electret fiber. JP-A-7-323206 describes an antibacterial air filter using ion exchange fibers obtained by quaternary ammonium-forming a kraft polymer of vinylpyridine. Japanese Patent Application Laid-Open No. 8-155231 discloses an air cleaning filter composed of a material containing an antibacterial agent and a deodorant. Japanese Patent Application Laid-Open No. 7-268752 describes a functional nonwoven fabric in which a functional material such as water absorption, deodorization, aromaticity, antibacterial properties, and antistatic properties is added to the nonwoven fabric, and a method for producing the same.

[0005]

An antibacterial filter mounted on an air conditioner such as an air purifier has a wind speed of 0.5 to 1.0 m.
It is necessary to capture airborne microorganisms with high removal efficiency at a relatively high wind speed of / sec. Further, in order to prevent the growth of microorganisms captured by the filter, it is necessary that the antimicrobial material and the captured microorganisms come into contact with each other. Airborne microorganisms are usually infested and suspended in aerosols such as airborne dust and liquid mist. Therefore, it is not easy to realize a high antibacterial action because the probability of contact between the antibacterial material and the captured microorganisms is not so high, and the effect described in the prior art cannot be expected much.

As described above, patents have been filed for an "antibacterial filter" or an "air purifying filter" for removing airborne microorganisms that contaminate indoor air, but because they exhibit high antibacterial performance under actual use conditions. No patents were found for the structure or manufacturing method.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to obtain an antibacterial filter having a high practical effect.

[0008]

According to the antibacterial filter of the present invention, a thin film of a binder material is formed on the surface of a porous base material, and fine particles of the antibacterial material are formed on the porous substrate through the thin film of the binder material. The material is coated on the substrate surface.

Further, the antibacterial material in the form of fine particles is used as an antibacterial material which detects an approach of microorganisms and releases antibacterial active molecules.

[0010] In the method for producing an antibacterial filter according to the present invention, an aerosol is formed by spraying a binder material of an aqueous emulsion type, and the porous substrate is passed through the aerosol through a porous substrate. A thin film of a binder material is formed on the surface of a base material, and the surface of the porous substrate is coated with an antibacterial material via the thin film of the binder material.

In addition, a spray portion of a binder material and a detection portion of an aerosol concentration are arranged in a container having a slit-shaped opening through which a sheet-like porous substrate can pass, and a thin film of the binder material is formed by controlling the aerosol concentration. It controls the formation.

Further, an aerosol is formed by spraying a fine-particle antibacterial material, and the fine-particle antibacterial material is formed by passing a porous substrate having a thin film of a binder material formed on the surface of the substrate through the aerosol. Is coated on the surface of the porous substrate via a thin film of a binder material.

[0013] Further, a spraying portion of fine particulate antibacterial material and an aerosol concentration detecting portion are arranged in a container having a slit-shaped opening through which a sheet-like porous substrate can pass, and the aerosol concentration is controlled to control the aerosol concentration. Is controlled.

Further, the sheet-like porous substrate is passed through a container holding an aerosol of a binder material, and then is passed through a container holding an aerosol of a particulate antibacterial material.

Further, after the microbial antibacterial material coats the surface of the porous base material through a thin film of the binder material, the moisture of the binder material is removed, whereby the microbial antibacterial material is converted to the porous base material. It is to be fixed on the substrate surface.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, airborne microorganisms are usually infested and suspended in aerosols such as airborne dust and liquid mist. Therefore, the wind speed is 0.5 to 1.0 m / sec.
As a material that removes airborne microorganisms with a high removal efficiency at a relatively high wind speed of c, a porous substrate such as a nonwoven fabric for dust removal or a porous urethane foam may be used. Also, in order to prevent the growth of microorganisms trapped on the porous substrate, it is necessary to contact the antimicrobial material with the captured microorganisms, so the antimicrobial material covers the substrate surface of the porous substrate evenly. Need to be.

Embodiment 1 In the embodiment of the first invention, a thin film of a binder material is formed in advance on the surface of a porous substrate, and then a fine-particle antibacterial material is applied to the substrate of the porous substrate via the thin film of the binder material. An antibacterial filter characterized by covering the surface evenly. In order for the antimicrobial material to cover the surface of the porous substrate evenly, the antimicrobial material needs to be fine particles of 10 microns or less. Further, a thin film of the binder material needs to be formed over the entire surface of the base material.

In the present invention, a thin film of a binder material is formed on the surface of the porous substrate, and the fine antibacterial material covers the entire surface of the porous substrate through the thin film of the binder material. Therefore, it is possible to maximize the effective surface area of the antibacterial material, and to exhibit extremely high antibacterial performance when used as an antibacterial filter.

Embodiment 2 An embodiment of the second invention is an antibacterial filter characterized in that the microbial antibacterial material is a high-performance antibacterial material that detects the approach of microorganisms and releases antibacterial active molecules. Is extremely high-performance because it exerts antibacterial action only by approaching without contact.

In the present invention, since the antibacterial material in the form of fine particles is a high-performance antibacterial material which releases an antibacterial active molecule upon sensing the approach of microorganisms, the antibacterial material does not come into contact with microorganisms when used as an antibacterial filter. It exerts an extremely high antibacterial performance because it exerts an antibacterial action only by approaching.

Embodiment 3 An embodiment of the third invention is to form an aerosol by spraying an aqueous emulsion type binder material, and to pass through the porous substrate through the aerosol to the surface of the porous substrate. A method for manufacturing an antibacterial filter, comprising forming a thin film of a binder material.

In the present invention, by passing the porous substrate through the aerosol of the binder material, a thin film of the binder material can be uniformly formed on the surface of the porous substrate. When the porous base material is immersed in a liquid binder material, if the degassing is insufficient, it becomes uneven, and if the binder material is excessive, the pores are closed in some places. Then, this point is solved.

Embodiment 4 The embodiment of the fourth invention is to install a spray part of a binder material and a detection part of aerosol concentration in a container having a slit-shaped opening through which a sheet-like porous substrate can pass, and control the aerosol concentration. The method for producing an antibacterial filter is characterized in that the formation of a thin film of a binder material is controlled by the method. In the present invention, by controlling the aerosol concentration of the binder material, it is possible to form a thin film of the binder material without excess or deficiency.

Embodiment 5 An embodiment of the fifth invention is to form an aerosol by spraying a microbial antibacterial material, and to pass through the aerosol through a porous substrate having a thin film of a binder material formed on a substrate surface. A method for producing an antibacterial filter, characterized in that a microbial antibacterial material is coated on the surface of a porous substrate through a thin film of a binder material.

In the present invention, since the fine-particle antibacterial material is adsorbed on the thin film of the binder material in a wet state, and once coated with the antibacterial material, it does not adsorb any more. It becomes possible to cover with.

Embodiment 6 FIG. The sixth embodiment of the present invention controls the aerosol concentration by installing a spraying portion of fine particulate antibacterial material and a detecting portion of aerosol concentration in a container having a slit-shaped opening through which a sheet-like porous substrate can pass. The present invention provides a method for manufacturing an antibacterial filter, characterized in that the coating state of the antibacterial material is controlled by performing the method.

In the present invention, it is possible to maximize the antibacterial performance of the antibacterial material by controlling the aerosol concentration of the microbial antibacterial material to cover the entire surface of the porous substrate. it can. Further, even if the particulate antibacterial material is excessively supported, the effective surface area does not increase so much, and when the binding between the particulate antibacterial material and the binder material is not sufficient, it is peeled off when used as an antibacterial filter.

Embodiment 7 An embodiment of the seventh invention is an antibacterial filter characterized in that a sheet-like porous substrate is passed through a container holding an aerosol of a binder material and then passed through a container holding an aerosol of a particulate antibacterial material. It is a manufacturing method of.

In the present invention, a fine-particle antibacterial material is formed on the surface of a porous substrate by forming a thin film of a binder material on the surface of the porous substrate and then coating the fine-particle antibacterial material on the surface of the porous substrate via the thin film of the binder material. It is possible to maximize the effective surface area of the material. In the conventional example disclosed in Japanese Patent Application Laid-Open No. 7-268752, a functional nonwoven fabric for a table cloth or wiping cloth is used. In the conventional example, after a nonwoven fabric carries a functional material such as an antibacterial material,
It describes that a binder material is applied and captured.

Embodiment 8 The embodiment of the eighth invention is to remove the moisture of the binder material after the particulate antibacterial material coats the base material surface of the porous base material through a thin film of the binder material, thereby forming the particulate antibacterial material. This is a method for producing an antibacterial filter, which is fixed to a surface of a porous substrate.

In the present invention, by contacting the aerosol-like particulate antibacterial material with the binder material in a dry state, the particulate antibacterial material can be effectively adhered to the surface of the binder material, thereby covering the entire surface of the substrate evenly. it can. Thereafter, by removing the water in a drying step, the antimicrobial material in the form of fine particles can be securely fixed to the surface of the porous substrate, and peeling does not occur even when used as an antibacterial filter.

Embodiment 9 FIG. 1 shows the first embodiment.
Figure 8 is a perspective view showing a heat exchange ventilator incorporating an antimicrobial filter according to Figure 8; In FIG. 1, reference numeral 10 denotes a heat exchange ventilator body in which a supply air passage and an exhaust air passage are formed.
Most of them are fitted and fixed in square holes penetrating the wall surface. 11 is an indoor panel that covers the opening on the indoor side, 12 is an air supply blower that is provided in the heat exchange ventilator body 10 and generates supply air in an air supply path, and 13 is an air supply blower that is inside the heat exchange ventilator body 10. An exhaust blower that is provided and generates exhaust air in an exhaust air path.

Reference numeral 14 denotes a heat exchanger for exchanging heat between supply air and exhaust air, and reference numeral 15 denotes an outside air cleaning filter provided on the supply / discharge side of the heat exchanger 14, using the antibacterial filter of the present invention. I have. The configuration of these heat exchange ventilators can be applied without any difference from the conventional one, except that the outside air cleaning filter 15 is the antibacterial filter of the present invention.

Next, the operation will be described. When the operation switch is turned on, the air blower 12 and the exhaust blower 13
Starts rotating by driving the motor, and the heat exchange ventilation operation is performed via the heat exchanger 14. At this time, the air supply from the outside to the room passes through the heat exchanger 14 and then through the outside air cleaning filter 15 to remove dust and airborne microorganisms. As described above, the antibacterial filter of the present invention is adopted as the outside air cleaning filter 15, and 0.5 to 1.0.
Despite the relatively fast passage speed of m / sec, sufficient capture of airborne microorganisms is achieved.

Embodiment 10 FIG. FIG. 2 shows the first embodiment.
FIG. 9 is a perspective view showing another heat exchange ventilator incorporating the antibacterial filter according to Nos. To 8; In FIG. 2, reference numeral 21 denotes an indoor unit in which a supply air passage and an exhaust air passage are formed.
Numeral 2 denotes the same outdoor unit, which is connected by a supply / discharge two-layer pipe 23 penetrating through the wall hole. 12 is an outdoor unit 22
An air blower provided inside the air supply passage for generating supply air in the supply air passage, and an exhaust blower 13 provided in the outdoor unit 22 for generating exhaust air in the exhaust air passage.

A heat exchanger 14 is provided in the indoor unit 21 and exchanges heat between air supply and exhaust air. A heat exchanger 15 is provided in the indoor unit 21 and is provided on the air supply discharge side of the heat exchanger 14. The antibacterial filter of the present invention is used in the provided outside air cleaning filter. The configuration of these heat exchange ventilators can be applied without any difference from the conventional one, except that the outside air cleaning filter 15 is the antibacterial filter of the present invention.

Next, the operation will be described. When the operation switch is turned on, the air blower 12 and the exhaust blower 13
Starts to rotate by the drive of the motor, meets the heat exchanger 14, and the heat exchange ventilation operation is performed. At this time, the air supply from the outside to the room passes through the heat exchanger 14 and then through the outside air cleaning filter 15 to remove dust and airborne microorganisms. As described above, the antibacterial filter of the present invention is adopted as the outside air cleaning filter 15, and 0.5 to 1.0.
Despite the relatively fast passage speed of m / sec, sufficient capture of airborne microorganisms is achieved.

In the ninth and tenth embodiments of the present invention, examples of the heat exchange ventilator are shown, but the application range of the antibacterial filter of the present invention is not limited to this. For example,
The present invention is also applied to a filter of an air purifier of a type that circulates indoor air or a cooling and heating device using a refrigeration cycle. In this case, since the indoor air circulates and passes through the antibacterial filter, a more rapid removal effect of airborne microorganisms can be expected.

[0039]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As the porous substrate used in the present invention, a material which can be used as an air filter, such as a breathable nonwoven fabric or a porous urethane foam, is used. As the antibacterial material used in the present invention, a solid antibacterial material that can be finely pulverized to a particle size of 10 μm or less is preferable, and metal powder such as silver, copper, and zinc is used. More preferably, the antibacterial material is a high-performance antibacterial material that detects the approach of microorganisms and releases antibacterial active molecules.

As such a high-performance antibacterial material, there is an iodine-based antibacterial material "Triosin" (trademark pending from Kitasato Pharmaceutical) which is commercially available from Kitasato Pharmaceutical. The molecular structure of triosin is "a salt of triiodide ion of an anion exchange resin having a quaternary ammonium ion as a functional group". As the binder material used in the present invention, an aqueous emulsion type adhesive is suitable. Hereinafter, the first invention will be described in the first embodiment, and the second invention will be described in the second embodiment.
The third to eighth inventions will be described in the first and second embodiments.

Embodiment 1 FIG. 3 shows a schematic view of the manufacturing process of the antibacterial filter. In FIG. 3, 1 is a breathable nonwoven fabric, 2 is a container used in the aerosol treatment step of a binder material, and has slit-shaped openings at both ends through which the nonwoven fabric can pass. Reference numeral 3 denotes an aerosol generator for atomizing and spraying an aqueous emulsion type adhesive, and reference numeral 4 denotes a window for sampling a small amount of air in order to measure the aerosol concentration.

Reference numeral 5 denotes a container which is used in the aerosol treatment step of a fine-particle antibacterial material and has slit-shaped openings at both ends through which a nonwoven fabric can pass. Reference numeral 6 denotes an aerosol generator for atomizing and spraying a finely divided antibacterial material, and reference numeral 7 denotes a window for sampling a small amount of air inside to measure the aerosol concentration. 8 is used for a binder material drying step,
This is a container having slit-shaped openings at both ends through which the nonwoven fabric can pass.

The nonwoven fabric is set through the containers in each step, and the drying container is set at 100 to 120 ° C. Next, a commercially available aqueous emulsion type adhesive and an antibacterial material obtained by atomizing metallic copper are sprayed from an aerosol generator. The aerosol concentration is preferably 100 to 1000 mg / m3, but the measurement of the aerosol concentration of the adhesive was performed only at the time of startup because the inside of the measuring instrument was contaminated. The aerosol concentration was measured by diluting the sampled air using a commercially available dust concentration meter.

FIG. 4 shows the result of observation of a nonwoven fabric on which a thin film of an aqueous emulsion type adhesive was formed by a stereoscopic microscope. The nonwoven fabric surface was covered with a thin film of adhesive, and the pores were not blocked by excess adhesive.
FIG. 5 shows the result of observing the nonwoven fabric coated with the particulate antibacterial material with a stereoscopic microscope. It was confirmed that the fine particle antibacterial material evenly covered the entire surface of the porous substrate, and that the effective surface area was extremely high.

The antibacterial filter can be obtained by placing the above-mentioned nonwoven fabric subjected to antibacterial processing in a filter frame as it is, or by folding it into a pleated shape and placing it in the filter frame.

Embodiment 2 FIG. The same nonwoven fabric as in Example 1 was used as the porous substrate, and an antibacterial material obtained by atomizing an iodine-based antibacterial material “Triosin” commercially available from Kitasato Pharmaceutical was used as the antibacterial material. The manufacturing process is the same as in the first embodiment. The results of observing the porous urethane foam coated with the triosin microbial antibacterial material using a stereoscopic microscope were the same as those in FIG.

The main component of triosin is an anion exchange resin, and is obtained by ion-bonding an iodine ion “O3-” as an anion. On the other hand, cell membranes of bacteria and molds, which are airborne microorganisms, are generally negatively charged, and when these bacteria and mold approach triosin, the triosin releases iodine ions (triiodide ions) and destroys the cell membranes. Therefore, triosin has an extremely high antibacterial action as compared with conventional antibacterial materials.

Reference. Table 1 shows the results of evaluating the antibacterial performance of the antibacterial nonwoven fabric obtained in Example 1 and the antibacterial nonwoven fabric obtained in Example 2. As a comparative example, the results of evaluating the antibacterial performance of a commercially available antibacterial nonwoven fabric obtained by kneading metallic copper into fibers are also shown in Table 1. Using the remaining hot water of the bath contaminated with microorganisms as a method of evaluating antibacterial performance,
An antibacterial nonwoven fabric or the like cut into a 5 cm square was immersed in 100 cc of water and stored in an incubator set at a temperature of 33 ° C. Using an ATP analyzer capable of measuring the total number of bacteria, the total number of bacteria after the first, one and two days had elapsed was measured. An antibacterial test using Escherichia coli and a fungicide test using blue mold were performed.
It is summarized and shown.

[0049]

[Table 1]

As is clear from the description of the above examples, in the antibacterial treated nonwoven fabric of the comparative example, since the antibacterial material is kneaded into the fibers, the effective surface area of the antibacterial material is 20 to 30.
%, The decrease in the total number of bacteria is slow, and the antibacterial effect is not high. On the other hand, in the antibacterial treated nonwoven fabric of Example 1 according to the first and third to eighth inventions, the effective surface area of the antibacterial material is as high as 50 to 60% as shown in FIG. high.

Also, in the antibacterial nonwoven fabric of Example 2 according to the second and third to eighth inventions, the effective surface area of the antibacterial material is as high as 50 to 60% as shown in FIG. Furthermore, the antibacterial effect is further improved because the fine-particle antibacterial material is a high-performance antibacterial material that detects the approach of microorganisms and releases antibacterial active molecules. The measurement limit of the total bacterial count of the ATP analyzer is 1 ×
Since it is 102 cells / mL, it can be said that in Example 2, the number of bacteria was reduced to an almost sterile state in one day.

Further, in the antibacterial test using Escherichia coli, the comparative example did not show a sufficient antibacterial effect, but in the examples, the number of bacteria was below the detection limit, indicating a high antibacterial effect. In the antifungal test using blue mold, a clear halo was not observed in the comparative example, whereas a clear halo was observed in Example 1, and a large halo was formed around the sample in Example 2, and the antifungal effect was reduced. It was observed to be very high.

[0053]

As described above, according to the present invention, a thin film of a binder material is formed on the surface of a porous substrate,
Since the microbial antibacterial material covers the surface of the porous base material via the thin film of the binder material, the effect of securing a large effective area of the antibacterial material is obtained.

Also, since the antibacterial material in the form of fine particles detects an approach of microorganisms and releases an antibacterial active molecule, an antibacterial effect can be exerted by the approach of microorganisms, and the effect of improving antibacterial performance can be obtained. can get.

An aerosol is formed by spraying a binder material of an aqueous emulsion type, and a thin film of the binder material is formed on the surface of the porous substrate by passing the porous substrate through the aerosol. Forming
Since the surface of the porous substrate is coated with the antibacterial material via the thin film of the binder material, the effect of uniformly forming a thin film of the binder material on the surface of the porous substrate is obtained.

Further, a spray portion of the binder material and a detection portion of the aerosol concentration are arranged in a container having a slit-shaped opening through which the sheet-like porous substrate can pass, and a thin film of the binder material is formed by controlling the aerosol concentration. Since the formation is controlled, it is possible to obtain an effect that a thin film of the binder material can be formed without excess or shortage.

Further, an aerosol is formed by spraying a fine-particle antibacterial material, and the fine-particle antibacterial material is formed by passing a porous substrate having a thin film of a binder material formed on the surface of the substrate through the aerosol. Is coated on the surface of the porous substrate through the thin film of the binder material, so that the effect of excellently adsorbing the antibacterial material onto the porous substrate and appropriately adsorbing it can be obtained.

Further, a spraying part of fine particulate antibacterial material and a detecting part of aerosol concentration are arranged in a container having a slit-shaped opening through which a sheet-like porous substrate can pass, and the antibacterial material is controlled by controlling the aerosol concentration. , The particulate antibacterial material can be formed without excess and deficiency, and an effect of sufficiently and stably bringing out antibacterial performance can be obtained.

Further, since the sheet-like porous base material is passed through the container holding the aerosol of the binder material and then through the container holding the aerosol of the particulate antibacterial material, the effective surface area of the particulate antibacterial material is sufficiently secured. The effect that can be obtained is obtained.

Further, the fine-particle antibacterial material is coated on the surface of the porous base material through a thin film of the binder material, and then the moisture of the binder material is removed. Since the antibacterial material is fixed to the surface of the base material, the adhesion of the particulate antibacterial material is promoted, and the effect of preventing peeling of the antibacterial material after drying is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a heat exchange ventilation device according to a ninth embodiment of the present invention.

FIG. 2 is a perspective view showing a heat exchange ventilation apparatus according to a tenth embodiment of the present invention.

FIG. 3 is a schematic view of a manufacturing process of an antibacterial filter showing an embodiment of the present invention.

FIG. 4 is an explanatory view in which a nonwoven fabric on which a thin film of an aqueous emulsion type adhesive described in Example 1 of the present invention is formed is observed with a stereoscopic microscope.

FIG. 5 is an explanatory view in which a nonwoven fabric coated with a particulate antibacterial material described in Examples 1 and 2 of the present invention is observed with a stereoscopic microscope.

[Explanation of symbols]

DESCRIPTION OF REFERENCE NUMERALS 1 breathable nonwoven fabric, 2 a container having slit-shaped openings at both ends used for aerosol treatment of a binder material, 3 aerosol generator for atomizing and spraying an aqueous emulsion type adhesive, 4 aerosol A window for sampling a small amount of air inside to measure the concentration; 5 a container with slit-like openings at both ends used for the aerosol treatment process of fine-particle antibacterial material; 6 a fine-particle antibacterial material Aerosol generator for atomizing and spraying, 7
A window for sampling a small amount of air in order to measure the aerosol concentration. 15 An outside air cleaning filter to which the antibacterial filter of the present invention is applied.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenji Mizoguchi 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Kenji Sekine 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Rishi Electric Co., Ltd.

Claims (8)

[Claims] 1. A method according to claim 1, wherein a thin film of a binder material is formed on the surface of the porous substrate, and the fine particle antimicrobial material covers the surface of the porous substrate through the thin film of the binder material. Characteristic antibacterial filter. 2. The antibacterial filter according to claim 1, wherein the fine particle antibacterial material is an antibacterial material which detects an approach of microorganisms and releases an antibacterial active molecule. 3. An aerosol is formed by spraying an aqueous emulsion type binder material, and a thin film of the binder material is formed on the surface of the porous substrate by passing the porous substrate through the aerosol. A method for producing an antibacterial filter, comprising forming and coating the surface of the porous substrate with an antibacterial material via a thin film of the binder material. 4. A thin film of a binder material by disposing a spray portion of a binder material and a detection portion of an aerosol concentration in a container having a slit-shaped opening through which a sheet-like porous substrate can pass, and controlling the aerosol concentration. The method for producing an antibacterial filter according to claim 3, wherein the formation is controlled. 5. An aerosol is formed by spraying a fine-particle antibacterial material, and the fine-particle antibacterial material is formed by passing a porous substrate having a thin film of a binder material formed on the surface of the substrate through the aerosol. Is coated on the surface of a porous substrate via a thin film of a binder material. 6. An antibacterial material by arranging a spray portion of fine particulate antibacterial material and a detecting portion of aerosol concentration in a container having a slit-shaped opening through which a sheet-like porous substrate can pass, and controlling the aerosol concentration. The method for producing an antibacterial filter according to claim 5, wherein a coating state of the antibacterial filter is controlled. 7. A method for producing an antibacterial filter, comprising: passing a sheet-like porous substrate through a container holding an aerosol of a binder material and then passing a container holding an aerosol of a particulate antibacterial material. 8. The microbial antibacterial material is coated on the surface of the porous substrate through a thin film of the binder material, and then the moisture of the binder material is removed. A method for producing an antibacterial filter, comprising fixing the antibacterial filter on a surface of a substrate.