JP2018203710A - Water section device - Google Patents

Abstract

To provide a water section device which can suppress growth of bacteria and mold for a long period of time.SOLUTION: A water section device has functional water generation means which generates functional water, functional water discharge means which discharges the generated functional water, and a resin member which receives the discharged functional water, where the resin member contains an organic antibacterial antifungal agent. A water section device has functional water generation means which generates functional water, functional water discharge means which discharges the generated functional water, and a resin member which receives the discharged functional water, where the resin member contains an inorganic antibacterial agent or an organic antibacterial antifungal agent, and an elution rate of the inorganic antibacterial agent or the organic antibacterial antifungal agent is 10g/cm/h or more. The device can suppress growth of bacteria and mold for a long period of time.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a watering device.

  It is known to suppress the growth of bacteria by discharging sterilized water containing hypochlorous acid to a place where dirt easily accumulates in a watering device.

  For example, Patent Literature 1 describes a bathroom cleaning system provided with a sterilizing means for sterilizing bath water after bathing in order to prevent accumulation of dirt in the bathroom. In addition, it is described that the generation of slime is suppressed by adding an antibacterial agent to the surface of a bathtub or a washing place.

  It is also known that the growth of bacteria can be suppressed by discharging not only sterilized water containing hypochlorous acid but also bactericidal metal ion water such as silver.

  For example, Patent Document 2 discloses that a hypochlorous acid-containing production unit that produces water containing hypochlorous acid by electrolyzing tap water, and bactericidal metal ions that are electrolyzed in tap water. There is described a disinfecting water generating device having a bactericidal metal ion water generating unit having an electrode eluting in the inside. Thus, it is described that even when the concentration of chloride ions contained in tap water is low, a sufficient sterilizing effect can be exhibited.

Japanese Patent Laid-Open No. 11-178781 JP, 2006-175035, A

  However, there is still a need for a watering device that has a simple structure and can suppress the growth of bacteria and molds over the long term.

  Therefore, an object of the present invention is to obtain a watering device capable of suppressing the growth of bacteria and molds over a long period of time.

  A watering device according to the present invention is a watering device having functional water generating means for generating functional water, functional water discharging means for discharging the generated functional water, and a resin member that receives the discharged functional water. The resin member is a watering device including an organic antibacterial and antifungal agent.

Further, a watering device according to the present invention is a watering device comprising functional water generating means for generating functional water, functional water discharging means for discharging the generated functional water, and a resin member that receives the discharged functional water. In the apparatus, the resin member includes an inorganic antibacterial agent or an organic antibacterial and antifungal agent,
It is a watering device in which the elution rate of the inorganic antibacterial agent or the organic antibacterial and antifungal agent is 10 ⁻⁹ g / cm ² / h or more.

It is a schematic diagram which shows the mechanism in which fungi and mold generate | occur | produce on the surface of a resin member.

Water supply apparatus The water supply apparatus of the present invention includes functional water generation means for generating functional water, functional water discharge means for discharging the generated functional water, and a resin member that receives the discharged functional water. In the peripheral device, the resin member contains an organic antibacterial and antifungal agent.

Further, the watering device of the present invention is a watering device comprising functional water generating means for generating functional water, functional water discharging means for discharging the generated functional water, and a resin member that receives the discharged functional water. In the apparatus, the resin member includes at least one kind of inorganic antibacterial agent or organic antibacterial and antifungal agent, and the elution rate of the inorganic antibacterial agent or the organic antibacterial and antifungal agent is 10 ⁻⁹ g / cm ² / h or more.

By adopting such a configuration, it is possible to suppress the growth of bacteria and fungi over a long period of time with a simple configuration.

  In the present invention, the effects produced by discharging functional water to a resin member containing an organic antibacterial and antifungal agent are considered as follows, but the present invention is not limited to the following description.

  For example, some organic antibacterial and antifungal agents have a function of inhibiting metabolism. In order for such an organic antibacterial and antifungal agent to act on bacteria and fungi, it is necessary to elute on the surface of the resin member and enter the cell membrane of bacteria and fungi adhering to the surface of the resin member.

On the other hand, when functional water such as metal ion sterilizing water such as hypochlorous acid water or silver ion water or ozone water discharged from the functional water generator comes into contact with bacteria or mold attached to the resin member surface Cell membrane protein destruction and cell membrane protein degeneration occur due to strong oxidative power.
Therefore, by combining the two, the cell membrane is destroyed or denatured by the functional water, and the organic antibacterial and antifungal agent contained in the resin member can easily enter the cell. Therefore, the metabolic pathway inhibitory action of the organic antibacterial and antifungal agent functions efficiently, and thus a synergistic effect can be expected.

  The watering device of the present invention can be used around water. Specific examples of the water area include toilets, bathrooms, washrooms, and kitchens.

Elution rate

  In this invention, the elution rate of an inorganic type antibacterial agent and an organic type antibacterial fungicide can be calculated | required using the following method.

A resin member having an area of S and ultrapure water having a volume of L are put in a container, and the whole resin member is immersed in water and left to stand for a predetermined time (T). Thereafter, the resin member is taken out from the container, and the concentration (M) of the inorganic antibacterial agent or organic antibacterial antifungal agent eluted from the resin member is calculated using an analyzer at a predetermined time (T). The analyzer can be selected according to the amount and type of inorganic antibacterial agent or organic antibacterial and antifungal agent contained in the resin member. For example, GC / MS or ICP-MS can be used. . At this time, the concentration (M) of the inorganic antibacterial agent or organic antibacterial and antifungal agent is determined in consideration of the influence of contamination and the like. As shown in the following formula, the concentration of the inorganic antibacterial agent or organic antibacterial antifungal agent eluted from the resin member, the area (S) of the resin member, and the elution time (T) The elution rate (V) is determined.

Antibacterial fungicide elution rate V (g / cm ² / h) = concentration M (g / ml) × solvent amount L (ml) / (inorganic antibacterial fungicide eluted from resin member Resin member area S (cm ² ) / elution time T (h))

  In the present invention, the elution rate refers to an elution rate calculated in an unused state after the resin member is manufactured. Here, the “unused state” refers to a state from when the resin member is manufactured to a state where it is actually used as, for example, a water supply member.

1. Growth mechanism of fungi and molds The growth mechanism of fungi and molds (fungi) on the surface of the resin member will be described with reference to FIG. 1, but the following description is only one theory, and the mechanism of the effect of the present invention Is not limited to the following description.

  FIG. 1 is a schematic view showing a mechanism of generating fungi and mold on the surface of a resin member.

Dirt adhesion process The dirt adhesion process is shown in FIG. In general, when the resin member 1 is used around water, the surface activity of the soap, body soap, etc. includes dirt components such as sebum and keratin (keratin protein) discharged from the human body due to actions such as hand washing, face washing, and bathing. Rinse away with water. This dirt component adheres to the surface of the resin member 1. Most of the adhered dirt components are washed away with running water. However, as shown in FIG. 1A, a part of the dirt component remains (residual water) on the surface of the resin member 1 as dirty water containing the dirt component, and the dirt 2 adheres to the surface of the resin member 1. .

Bacterial growth process The bacterial growth process is shown in FIGS. 1 (b) and 1 (c). The fungus 3 grows on the surface of the resin member 1 using the dirt 2 and the residual water adhering to the surface of the resin member 1 as nutrients (FIG. 1B). As fungi 3 existing around water, there is one that grows while discharging extracellular polysaccharides (EPS) as it grows. For example, Microbacterium sp., Methylobacterium sp., Pseudomonas sp. The component mainly composed of the EPS is called a biofilm. As the fungus 3 grows, a biofilm 4 is formed on the surface of the resin member 1 (FIG. 1C). The biofilm 4 acts as a defense mechanism against external stimuli (flowing water, acid, alkali, heat, etc.) of the fungus 3. The biofilm 4 is also called slime, and the surface viscosity of the resin member 1 is increased. Thereby, it is considered that the adhesion of dirt 2 and the growth of fungi 3 and mold 5 are promoted on the surface of the resin member 1.

Mold Growth Process The mold growth process of mold 5 is shown in FIGS. 1 (d) and 1 (e). Since the growth of the mold 5 is generally slower than that of the fungus 3, it is considered that the growth of the mold 5 proceeds after the growth of the fungus 3 and the production of the biofilm 4 accompanying it under a normal water environment. Mold spores grow on the surface of the resin member 1 and the surface of the biofilm 4, and then the soil 2 attached to the surface of the resin member 1 grows nutritionally. Some molds develop color as they grow. Specific examples of the mold include Cladosporium sp.

Functional water production | generation means In this invention, a functional water production | generation means produces | generates functional water. Examples of functional water include hypochlorous acid, bactericidal metal ion water, and ozone water. Of these, hypochlorous acid and bactericidal metal ion water are preferable. Examples of bactericidal metal ion water include silver ion water, copper ion water, and zinc ion water. As the functional water generating means used in the present invention, for example, the following can be used.

  In the present invention, the functional water generating means passes water through a unit filled with a material in which an inorganic antibacterial agent or an organic antibacterial antifungal agent is supported on a method of generating by electrolysis, a support such as glass or zeolite, One or more kinds selected from a method of gradually eluting antibacterial components and a method of using antibacterial glass can be used. The antibacterial glass is a glass in which a metal such as aluminum and a metal ion such as silver ions constituting the glass are ion-bonded, and the metal ion is released when the antibacterial glass is slightly dissolved in water. In the present invention, it is preferable to use a method of generating by electrolysis. More preferably, a method of generating water by electrolysis is preferably used. As a result, the concentration of the sterilizing component to be generated can be controlled with higher accuracy by the current value, voltage value, resistance value, and the like.

  In this invention, it is preferable that a functional water production | generation means is what produces | generates 80 mg / L or less functional water. Even if a person accidentally swallows it, it can have no effect on the human body.

  In the present invention, when hypochlorous acid is produced as functional water, the functional water producing means preferably produces 5 mg / L or less hypochlorous acid water, and is 4 mg / L or less. More preferably.

  In this invention, when producing | generating silver ion water as functional water, it is preferable to produce | generate silver ion water below 70 mg / L. Thereby, even if a person accidentally swallows, it can be set as there is no influence on a human body. More preferably, it is more preferable to produce 0.2 mg / L or less of silver ion water. Generation of black mold due to silver ions can be suppressed.

  In the present invention, as functional water generating means, when hypochlorous acid is generated by electrolyzing water, for example, the following means can be used.

In the present invention, the functional water generating means has an anode and a cathode inside, and flows through a space (flow path) between the anode and the cathode by an energization control signal output from the control unit. Tap water can be electrolyzed. When a voltage is supplied between the anode and the cathode 3, the reaction represented by the formula (1) occurs at the cathode.

H ⁺ + e ⁻ → 1 / 2H ₂ ↑ (1)

On the other hand, when a voltage is supplied between the anode and the cathode, the reactions represented by the equations (2) and (3) occur at the anode.

2OH ⁻ → 2e− + H ₂ O + 1 / 2O ₂ ↑ (2)
Cl ⁻ → e ⁻ + 1 / 2Cl ₂ (3)

Chlorine generated in the formula (3) hardly exists as bubbles, and most of the chlorine is dissolved in water. Therefore, for the chlorine generated in formula (3), the reaction represented by formula (4) occurs. Thus, hypochlorous acid (HClO) is produced by electrolyzing chlorine ions. As a result, the water electrolyzed in the functional water generating means changes to water containing hypochlorous acid.

Cl ₂ + H ₂ O → HClO + H ⁺ + Cl ⁻ (4)

  In the functional water generating means, when water is electrolyzed to generate bactericidal metal ion water, the anode is made of silver (Ag) or a metal containing silver. In general, it is desirable to form both the pair of electrodes from silver and to reverse the polarity of the applied voltage as appropriate. When a voltage is supplied between the pair of electrodes, silver ions are released from the anode-side electrode. The released silver ions flow into the water flowing downstream along the water flow. Thereby, the water energized in the bactericidal metal ion water generator changes to water containing bactericidal metal ions. Water containing bactericidal metal ions exhibits, for example, bactericidal action and sterilization action.

  In this invention, it is preferable that a functional water production | generation means is what was incorporated as a unit in the watering device. For example, as described in Patent Document 2, a known configuration for use in a watering device can be used as appropriate.

Functional water discharging means The functional water discharging means is provided downstream of the functional water generating means. The functional water discharge means discharges functional water to the resin member.

  In the present invention, the functional water discharge means may be provided anywhere as long as the functional water can be discharged onto the surface of the resin member. For example, in the case of a bathroom, it is preferable that functional water is discharged to a floor or a drain outlet on which bacteria and mold grow. Specifically, it is preferably provided on the bottom surface of the counter unit. In the case of a kitchen, it is preferable that functional water is discharged to a sink or a drain outlet as in the case of a bathroom, and a unit integrated with a faucet device that discharges tap water can be used. It can be configured separately. Further, in the case of a vanity, it is preferable that functional water is discharged to the bowl and the drain, and the unit is integrated with a faucet device that discharges tap water. Can be configured.

  In the present invention, the discharge includes discharging water in the form of flowing water or spraying mist and water droplets.

  In the present invention, when the functional water generating means generates hypochlorous acid water, the functional water discharging means preferably discharges hypochlorous acid water having a concentration higher than 0.3 mg / L, and the concentration is 1.7 mg / L. It is more preferable to discharge hypochlorous acid water for L or more. Further, it is preferable to discharge hypochlorous acid water having a concentration of 5 mg / L or less, and more preferable to discharge hypochlorous acid water having a concentration of 4 mg / L or less. Furthermore, it is more preferable to discharge hypochlorous acid water having a concentration of 1.7 mg / L or more and 4 mg / L or less.

  In the present invention, when the functional water generating means generates bactericidal metal ionic water, the functional water discharge means preferably discharges bactericidal metal ionic water having a concentration of 0.2 μg / L or more, preferably 5 μg / L or more. More preferably, a concentration of bactericidal metal ion water is discharged. Moreover, it is preferable to discharge bactericidal metal ion water having a concentration of 70 mg / L or less.

In the present invention, the sterilizing metal ion water is preferably silver ion water. When silver ion water is used as bactericidal metal ion water, it is preferable to discharge silver ion water having a concentration of 0.2 μg / L or more, and silver ion water having a concentration of 5 μg / L to 0.2 mg / L. More preferably, it is discharged. Moreover, it is preferable to discharge silver ion water having a concentration of 0.2 mg / L or less.

Resin member In the present invention, the resin member contains an organic antibacterial and antifungal agent. Since the organic antibacterial and antifungal agent elutes on the surface of the resin member, even if dirt is attached to the surface of the resin member, the growth of bacteria can be made difficult. Therefore, generation of biofilm and generation of mold can be suppressed.

In the present invention, the organic antibacterial and antifungal agent is preferably carried on an inorganic compound. Thereby, even if it heats when shape | molding a resin member, it can prevent impairing the antibacterial property and antifungal property of an organic type antibacterial and antifungal agent. Moreover, since the speed of the organic antibacterial and antifungal agent eluted from the resin member can be controlled, it is considered that the growth of bacteria and molds can be suppressed for a long time.

Resin In this invention, resin is contained in the resin member as a main component. Here, the main component is preferably 50% by mass or more, more preferably 60% by mass or more in the resin member. Thereby, it becomes possible to obtain favorable moldability and appearance.

  In the present invention, it is possible to use either a thermosetting resin or a thermoplastic resin as the resin. When the resin member is large and high strength and heat resistance are required, it is preferable to use a thermosetting resin. On the other hand, when the resin member is small and has a complicated shape, it is preferable to use a thermoplastic resin.

  In the present invention, as the thermosetting resin, it is possible to use one or more selected from urea resin, melamine resin, phenol resin, unsaturated polyester resin, epoxy resin, and silicon resin.

  In the present invention, as the thermoplastic resin, polypropylene resin (PP), polyethylene resin (PE), polyacetal resin (POM), polybutylene terephthalate resin (PBT), polyvinyl chloride resin (PVC), polystyrene resin (PS), acrylonitrile -Butadiene-styrene copolymer resin (ABS), polyphenylene sulfide resin (PPS), polyethylene terephthalate resin (PET), polymethyl methacrylate resin (PMMA), polyamide resin (PA), polyether ether ketone resin (PEEK), poly One or more selected from trimethylene terephthalate resin (PTT), polycarbonate resin (PC), and polytetrafluoroethylene-4-fluoroethylene resin (PTFE) can be used.

  In the present invention, it is preferable to use a thermoplastic resin as the resin. More preferably, it is more preferable to use at least one resin selected from PP, PE, POM, PBT, PVC, ABS, PPS, PET, PMMA, PA, and PC. Even more preferable among these is at least one selected from PP, POM, and PE.

Organic antibacterial and antifungal agent In the present invention, the organic antibacterial and antifungal agent is described in the antibacterial and antifungal dictionary-original edition-(Journal of the Japanese Society for Antibacterial and Antifungal, 1998, Vol. 26). Means organic drugs having MIC (Minimum Inhibitory Concentration) against bacteria and fungi.

In the present invention, the organic antibacterial and antifungal agent preferably has an elution rate of 10 ⁻⁹ g / cm ² / h or more, more preferably 10 ⁻⁸ g / cm ² / h or more.

  In the present invention, as the organic antibacterial and antifungal agents, for example, alcohol antibacterial and antifungal agents, aldehyde antibacterial and antifungal agents, thiazoline and other antibacterial and fungicides, imidazole and other antibacterial and fungicides, ester Antibacterial fungi, peroxide antibacterial fungi, carboxylic acid antibacterial fungi, carbamate antibacterial fungi, sulfamide antibacterial fungi, quaternary ammonium salt antibacterial fungi, biguanide antibacterial It is possible to use one or more selected from antifungal agents, pyridine antibacterial fungicides, phenolic antibacterial fungicides, iodine antibacterial fungicides, and triazole antibacterial fungicides.

  In the present invention, the following organic antibacterial and antifungal agents can be used specifically.

  Alcohol-based antibacterial and antifungal agents include ethanol, isopropanol, propanol, trisnitro (trishydroxymethylnitromethane), chlorobutanol (1,1,1-trichloro-2-methyl-2-propanol), bronopol (2-bromo-2) One or more selected from (nitropropane-1,3-diol) can be used.

  As the aldehyde antibacterial and antifungal agent, one or more selected from glutaraldehyde, formaldehyde, and BCA (α-bromocinnamaldehyde) can be used.

  Thiazoline antibacterial and antifungal agents include OIT (2-n-octyl-4-isothiazolin-3-one), MIT (2-methyl-4-isothiazolin-3-one), CMI (5-chloro-2-methyl) -4-isothiazolin-3-one), BIT (1,2-benzisothiazolone), n-butyl BIT (Nn-butyl-1,2-benzisothiazolin-3-one) is used. be able to.

  The structural formula of OIT is shown in Chemical Formula 1.

  The structural formula of MIT is shown in Chemical Formula 2.

  The structural formula of CMI is shown in Chemical Formula 3.

  The structural formula of BIT is shown in Chemical Formula 4.

  As the imidazole antibacterial and antifungal agent, one or more selected from TBZ (2- (4-thiazolyl) -benzimidazole) and BCM (methyl-2-benzimidazole carbamate) can be used.

  As the ester antibacterial and antifungal agent, lauricidine (glycerol laurate) and the like can be used.

  Chlorine antibacterial and antifungal agents include triclocarban (3,4,4′-trichlorocarbanilide), halocarban (4,4-dichloro-3- (3-fluoromethyl) -carbanilide), 2,4,4 One or more selected from 5,6-tetrachloroisophthalonitrile, sodium hypochlorite, dichloroisocyanuric acid, and trichloroisocyanuric acid can be used.

  As the peroxide antibacterial and antifungal agent, one or more selected from hydrogen peroxide, chlorine dioxide, and peracetic acid can be used.

  Carboxylic acid antibacterial fungicides include benzoic acid, sorbic acid, caprylic acid, propionic acid, 10-undecylenic acid, potassium sorbate, potassium propionate, calcium propionate, sodium benzoate, sodium propionate, magnesium dihydrogen One or more selected from bismonoperoxyphthalate and zinc undecylenate can be used.

  As the carbamate antibacterial and antifungal agent, sodium N-methyldithiocarbamate can be used.

  As the sulfamide antibacterial and antifungal agent, one or more selected from dichlorofluanide and trifluanid can be used.

  The quaternary ammonium salt antibacterial and antifungal agents include 4,4 ′-(tetramethylenedicarbonyldiamino) bis (1-decylpyridiniumboromide), benzalkonium chloride, benzotonium chloride, acetylammonium bromide, N, One or more selected from N′-hexamethylenebis (4-carbonyl-1-decylpyridinium bromide) and cetylpyridinium chloride can be used.

  As the biguanide antibacterial and antifungal agent, one or more selected from chlorhexidine gluconate, chlorhexidine hydrochloride, polypiguanide hydrochloride, and polyhexamethylenepiguanide can be used.

  Examples of pyridine-based antibacterial and antifungal agents include sodium pyrithione, zinc pyrithione (ZPT: bis (2-pyridithio-1-oxide) zinc), densyl (2,3,5,6, -tetrachloro-4- (methylsulfonyl) pyridine. 1) or more selected from copper pyrithione (bis (2-pyridithio-1-oxide) copper).

  The structural formula of ZPT is shown in Chemical formula 5.

  Phenol antibacterial and antifungal agents include thymol (2-isopropyl-5-methylphenol), biosol (3-methyl-4-isopropylphenol), OPP (orthophenylphenol), phenol, butylparaben (butyl-p-hydroxy) Benzoate), ethylparaben (ethyl-p-hydroxybenzoate), methylparaben (methyl-p-hydroxybenzoate), propylparaben (propyl-p-hydroxybenzoate), metacresol, orthocresol, paracresol, sodium orthophenylphenol, chloro One or more selected from phen (2-benzyl-4-chlorophenol) and chlorocresol (2-methyl-3-chlorophenol) can be used.

  Examples of iodine-based antibacterial and antifungal agents include Amical 48 iodine (diiodomethyl-p-tolyl-sulfone), polyvinylpyrrolidone iodine, p-chlorophenyl-3-iodopropargyl formal, 3-bromo-2,3-diiodo-propenyl ethyl carbonate One or more selected from 3-iodo-2-propynyl butyl carbonate can be used.

  Examples of triazole antibacterial and antifungal agents include tebuconazole ((±) -α- [2- (4-chlorophenyl) ethyl] -α- (1,1-dimethylethyl) -1H-1,2,4-triazole-1 -Ethanol) and the like can be used.

  In the present invention, two or more organic antibacterial and antifungal agents can be used. Thereby, it is possible to further suppress the growth of bacteria and mold.

  In the present invention, as the organic antibacterial / antifungal agent, at least two kinds of organic antibacterial / antifungal agents having different elution rates can be used. This makes it possible to suppress the growth of fungi and molds over a longer period.

In the present invention, when two types of organic antibacterial and antifungal agents are used, the resin member preferably includes a first organic antibacterial and antifungal agent and a second organic antibacterial and antifungal agent. The first organic antibacterial and antifungal agent preferably has an elution rate of 10 ⁻⁹ g / cm ² / h or more, and more preferably 10 ⁻⁸ g / cm ² / h or more. The elution rate of the second organic antibacterial and antifungal agent is preferably 5 times or more, more preferably 10 or more times that of the first organic antibacterial and antifungal agent. Accordingly, since the second organic antibacterial and antifungal agent elutes quickly on the surface of the resin member, it is possible to suppress the growth of bacteria and fungi at the beginning of using the resin member. In addition, since the first organic antibacterial and antifungal agent elutes at a slower rate than the second organic antibacterial and antifungal agent, it is possible to suppress the growth of bacteria and fungi over a long period of time.

  In the present invention, it is preferable to use one or more selected from a thiazoline antibacterial and antifungal agent and a pyridine antibacterial and antifungal agent as the organic antibacterial and antifungal agent. This makes it possible to further suppress the growth of fungi and mold around the water. As the organic antibacterial and antifungal agent, it is more preferable to use a thiazoline antibacterial and antifungal agent and a pyridine antibacterial and antifungal agent.

  In the present invention, the organic antibacterial and antifungal agent is preferably supported on an inorganic compound. Thereby, the heat resistance of the organic antibacterial and antifungal agent can be improved, and it is possible to suppress the generation of gas during heat molding. Moreover, since the rate at which the organic antibacterial and antifungal agent elutes from the resin member can be controlled, it is possible to suppress the growth of bacteria and fungi over the long term.

  As the inorganic compound, one or more selected from zeolite, glass, talc, silica gel, silicate, mica, and sepiolite can be used. Among these, it is preferable to use one or more selected from zeolite, talc, and glass.

  In the present invention, the organic antibacterial and antifungal agent is preferably contained in the resin member in an amount of 0.01% by mass to 10% by mass. This makes it possible to impart antibacterial and antifungal properties to the resin member. More preferably, it is 0.01 mass% or more and 0.7 mass% or less, More preferably, it contains 0.1 mass% or more and 0.7 mass% or less. Thereby, the moldability at the time of heat molding is good, and it becomes possible to suppress the growth of bacteria and molds in the long term.

  The resin member according to the present invention preferably contains 0.01% by mass or more, more preferably 0.03% by mass or more, of an organic antibacterial and antifungal agent on the surface.

  The amount of the antibacterial and antifungal agent contained in the resin member and the surface of the resin member can be obtained using an analysis technique.

  Analytical methods for obtaining the amount of antibacterial and antifungal agent contained in the resin member include gas chromatograph mass spectrometry (GC / MS), high performance liquid chromatograph (HPLC), high performance liquid chromatograph mass spectrometry (LC / MS), High performance liquid chromatograph tandem mass spectrometry (LC / MS / MS) and the like can be mentioned, and can be appropriately selected according to the type of antibacterial and antifungal agent.

  Analysis methods for obtaining the amount of antibacterial and antifungal agents contained on the surface of the resin member include X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES), electron beam microanalyzer (EPMA), glow discharge emission spectrometer (GD-OES), glow discharge mass spectrometer (GD-MS), total reflection infrared absorption method (ATR-IR), and the like, and can be appropriately selected according to the type of antibacterial and antifungal agent.

  Examples of specific analysis methods for obtaining the amount of the organic antibacterial and antifungal agent contained in the resin member include the following methods.

  The resin member is cut into about several cm × cm, and this is pulverized using a freeze pulverizer or the like so that the average particle diameter is about several tens of micrometers. Thereafter, extraction using liquid / liquid extraction, Soxhlet extraction, supercritical fluid extraction, or the like is performed using a solvent in consideration of compatibility with the contained antibacterial / antifungal agent, and the antibacterial / antifungal agent is eluted in the solvent. Thereafter, concentration and phase transfer operations are performed as necessary, and quantified with the above-described analyzer. As the quantification method, an absolute calibration curve method, an internal standard method, an isotope dilution method, or the like can be used as appropriate.

It is possible to obtain the amount of the antibacterial / antifungal agent contained on the surface of the resin member by using the amount of the antibacterial / antifungal agent contained in the resin member obtained by the analysis method. The rate at which the antibacterial and antifungal agent elutes from the resin member is measured. From the elution rate and elution time of the antibacterial / antifungal agent contained in the resin member, the amount of the antibacterial / antifungal agent contained on the surface of the resin member can be determined.
Antibacterial and antifungal agent surface concentration N (g / cm ² ) = antibacterial and antifungal agent elution rate V (g / cm ² / h) × elution time T (h))

Inorganic antibacterial agent In the present invention, the antibacterial agent is described in the antibacterial and antifungal agent dictionary-original edition-(Journal of the Japanese Society for Antibacterial and Antifungal Society, 1998, Vol. 26). It means an inorganic drug having a (minimum growth inhibitory concentration).

In the present invention, the inorganic antibacterial and antifungal agent preferably has an elution rate of 10 ⁻⁹ g / cm ² / h or more, and more preferably 10 ⁻⁸ g / cm ² / h or more.

  In the present invention, the inorganic antibacterial agent may be one or more selected from silver antibacterial agents, zinc antibacterial agents, and copper antibacterial agents. Thereby, since an antibacterial effect can be imparted to a wide variety of bacteria, it is possible to suppress the production of a biofilm produced by the growth of the bacteria. Therefore, the growth of molds that adhere to the biofilm as a scaffold can also be suppressed.

  In the present invention, it is possible to use an inorganic antibacterial agent in which one or more selected from silver ions, zinc ions and copper ions are supported on an inorganic compound. As the inorganic compound, it is possible to use one or more selected from zeolite, glass, talc, silica gel, silicate, mica, and sepiolite. When using a plurality of ionic species, each ion may be supported on the same inorganic compound. Specifically, an inorganic antibacterial agent in which silver ions and zinc ions are supported on glass can be used. Moreover, when using several ion species, each ion may be carry | supported by the different inorganic compound. Specifically, it is possible to use an inorganic antibacterial agent in which silver ions are supported on glass and an inorganic antibacterial agent in which zinc ions are supported on zeolite.

In the present invention, it is preferable to use a composite of silver and an inorganic oxide other than silver as the silver-based antibacterial agent. Specifically, silver-zirconium phosphate (Ag _x H _y Na _z Zr ₂ (PO) ₄ ) ₃ ) (x + y + z = 1), silver chloride-titanium oxide (AgCl / TiO ₂ ), silver-zinc calcium phosphate (Ag—Ca _x Zn _y Al _z (PO) ₄ ) ₆ (x + y + z = 10), silver zinc aluminum silicate (mixture) M _{2 / n} · Na ₂ O · 2SiO ₂ · xH ₂ O (M: Ag, Zn , NH ₄ )) can be used.

In the present invention, zinc oxide / silver / zirconium phosphate (ZnO, Ag _x H _y Na _z Zr ₂ (PO) ₄ ) ₃ ) or the like can be used as the zinc-based antibacterial agent.

  In the present invention, N-stearolyl-L-glutamic acid AgCu salt or the like can be used as the copper antibacterial agent.

  In the present invention, a silver antibacterial agent is preferably used as the inorganic antibacterial agent. More preferably, a composite of silver and an inorganic oxide other than silver is used. Thereby, since excessive elution of silver on the surface of the resin member can be suppressed, it is possible to suppress the growth of bacteria over a long period of time.

The resin member according to the present invention preferably contains 1 × 10 ⁻⁴ mass% or more and 10 mass% or less of an inorganic antibacterial agent, and preferably contains 1 × 10 ⁻⁴ mass% or more and 3.6 × 10 ⁻³ mass% or less. More preferably, it is more preferably 1 × 10 ⁻³ mass% or more and 3.6 × 10 ⁻³ mass% or less. Thereby, it is possible to suppress the growth of bacteria over a long period of time and suppress the production of biofilm.

  The resin member according to the present invention preferably contains 0.01% by mass or more of an inorganic antibacterial agent on the surface, and more preferably 0.03% by mass or more. This makes it possible to impart an antibacterial effect to a wide variety of bacteria.

  In the present invention, the amount of the inorganic antibacterial agent contained in the resin member and the surface of the resin member can be determined using an analysis technique.

  Examples of the analytical method for obtaining the amount of the inorganic antibacterial agent contained in the resin member include inductively coupled plasma emission spectrometry or mass spectrometry (ICP-AES / OES, ICP-MS). It can be selected as appropriate according to the conditions.

  The amount of the inorganic antibacterial agent contained on the surface of the resin member can be determined by the same method as that for the antibacterial and antifungal agent described above.

  The amount of the antibacterial and antifungal agent contained in the resin member and the surface of the resin member can be obtained using an analysis technique.

  In the present invention, the amount of the inorganic antibacterial agent contained in the resin member and the surface of the resin member can be determined using an analysis technique.

  Examples of the analytical method for obtaining the amount of the inorganic antibacterial agent contained in the resin member include inductively coupled plasma emission spectrometry or mass spectrometry (ICP-AES / OES, ICP-MS). It can be selected as appropriate according to the conditions.

  The amount of the inorganic antibacterial agent contained on the surface of the resin member can be determined by the same method as that for the antibacterial and antifungal agent described above.

  In the present invention, when the resin member contains an organic antibacterial and antifungal agent and an inorganic antibacterial agent, it is preferable to select organic antibacterial and antifungal agents and inorganic antibacterial agents having different action mechanisms. In the present invention, it is preferable to use an organic antibacterial and antifungal agent that inhibits bacterial and fungal metabolism. In the present invention, it is preferable to use an inorganic antibacterial agent that inhibits bacterial cell membranes. Thereby, the inorganic antibacterial agent destroys the cell membrane of bacteria and mold, and the organic antibacterial and antifungal agent easily enters the cell. Therefore, the growth of fungi and mold can be suppressed.

In the present invention, it is preferable to use an isothiazoline organic antibacterial and antifungal agent as the organic antibacterial and antifungal agent. An isothiazoline-based organic antibacterial and antifungal agent penetrates into cell membranes of bacteria and molds, inhibits ATP synthesis by inhibiting dehydrogenase in the TCA cycle, and can suppress the growth of bacteria and molds. In the present invention, it is preferable to use a pyridine organic antibacterial and antifungal agent as the organic antibacterial and antifungal agent. More preferably, it has a pyrithione skeleton. Thereby, ATP synthesis can be inhibited by invading into the cell membrane of bacteria and fungi and limiting membrane transport by inhibiting the proton pump, thereby suppressing the growth of bacteria and fungi.

In the present invention, a silver antibacterial agent is preferably used as the inorganic antibacterial agent. Thereby, silver ion couple | bonds with -SH group and disulfide bond in bacterial cell membrane protein, and can destroy a cell membrane by denaturing membrane protein.

Silicone Compound In the present invention, the resin member can contain a silicone compound. Thereby, the water repellency on the surface of the resin member can be improved, and the adhesion of residual water and dirt can be prevented.

  In the present invention, the resin member preferably contains 0.1% by mass to 10% by mass of the silicone compound, more preferably 0.1% by mass to 5% by mass, and more preferably 2% by mass to 4% by mass. Even more preferably. Thereby, since an organic antibacterial / antifungal agent and an inorganic antibacterial agent together with silicone are likely to stay on the surface of the resin member, it is possible to suppress the growth of bacteria and molds in the long term.

Reactive Silicone In the present invention, reactive silicone can be used as the silicone compound. As the reactive silicone, a silicone resin in which one end of a molecular chain is blocked with one selected from a dimethylvinylsiloxane group, an acryloyl group, and a methacryloyl group can be used. Specific examples include one-end modified acrylic silicone and one-end modified methacryl silicone.

  In the present invention, the reactive silicone is preferably used as a silicone graft resin obtained by graft-polymerizing a reactive silicone onto a resin. This makes it possible to fix the reactive silicone to the resin, so that it is possible to maintain water repellency for a long time.

  In the present invention, the silicone graft resin can be obtained by bonding a silicone resin in which one end of a molecular chain is blocked with one kind selected from a dimethylvinylsiloxane group, an acryloyl group, and a methacryloyl group to the main chain of the resin. I can do it. Specific production methods and the like are known and can be obtained, for example, according to the description in JP-A-8-127660.

  For example, when silicone grafted polypropylene is used as the silicone graft resin, silicone grafted polypropylene is commercially available and can be used in the present invention. Examples of commercially available silicone-grafted polypropylene include X-22-1101 (Shin-Etsu Chemical Co., Ltd.) and BY27-201 (Toray Dow Corning Co., Ltd.).

  In the present invention, the reactive silicone is preferably contained in the resin member in an amount of 0 to 10% by mass, more preferably 0 to 4% by mass, and more preferably 2 to 4% by mass. Even more preferred.

Non-reactive silicone oil In the present invention, the resin member can contain a non-reactive silicone oil as a silicone compound. Non-reactive silicone oil is represented by the general formula _{R 3 SiO- (R 2 SiO)} n-SiR 3 ( wherein, R represents the same or different and are an alkyl group, preferably a _{C 1 -6} alkyl group) in It is preferable that it is a compound represented.

  The non-reactive silicone oil may be one or more selected from the group consisting of dimethyl silicone oil, methylphenyl silicone oil, alkyl-modified silicone oil, fluorosilicone oil, polyether-modified silicone oil, and fatty acid ester-modified silicone oil. Is possible. In general, the viscosity of silicone oil is 0.5 cSt to 1,000,000 cSt, but in the present invention, the viscosity of 10 to 1,000 cSt is preferable in consideration of bleeding of non-reactive silicone. Thereby, the non-reactive silicone oil can easily bleed on the surface of the resin member, and the surface of the resin member can be made water repellent.

  In the present invention, the non-reactive silicone oil is preferably contained in the resin member in an amount of 0 to 5% by mass, more preferably 0 to 4% by mass, and more preferably 0.2 to 2% by mass. It is even more preferable that the content is less than or equal to%.

  In the present invention, as the silicone compound, reactive silicone or non-reactive silicone may be used, or both may be used.

  In the present invention, the resin member can be used as a member made of a resin used around water.

Examples of members used in the toilet include toilet seats, toilet lids, cases of local cleaning devices, deodorizing units, cleaning nozzles, hand wash basins, urinals, welfare equipment, and hand dryers.

Examples of the member used in the bathroom include a bathtub, a bathroom floor, a bathroom wall, a bathroom ceiling, a handrail, a bath chair, a drain pit, a counter, a shelf, a trap, a hair catcher, a drain flange, a sealing tube, and a bathroom drying device.

Examples of the member used in the washroom include a wash bowl, counter, trap, hair catcher, drainage flange, seal tube, drain cap, eye plate, drain plug, shelf, and the like.

  Examples of the member used in the kitchen include a net basket, a sink, a drain port, a trap, a drain flange, a sealing tube, a drain port lid, a eye plate, a drain plug, and a counter.

Manufacturing Method In the present invention, the manufacturing method for producing the resin member can use the following method, but is not limited thereto.

  First, raw materials necessary for constituting the resin member are prepared. The resin raw material, the organic antibacterial and antifungal agent, and the inorganic antibacterial agent are weighed and mixed to a desired amount. As a method for mixing the resin raw material with the organic antibacterial and antifungal agent and the inorganic antibacterial agent, it is possible to use a compound or a masterbatch.

  The compound can be used by adding and mixing a predetermined amount of an organic antibacterial and antifungal agent and an inorganic antibacterial agent in a state where the resin raw material is heated and melted, for example, forming into a pellet form.

  The master batch is obtained by concentrating a resin, an organic antibacterial and antifungal agent, an inorganic antibacterial agent, an additive, and the like, for example, in a pellet form. A master batch prepared in advance can be mixed with a resin raw material at the time of molding and used.

  In the present invention, depending on the purpose, the raw material may contain additives such as talc, glass fiber, carbon fiber, cellulose fiber, antioxidant, light stabilizer, ultraviolet absorber, and colorant.

  When design properties are taken into consideration, an inorganic pigment or an organic pigment can be used as a colorant. As the inorganic pigment, titanium oxide, talc, silica and the like can be used. Organic pigments include Pigment Yellow 83, Pigment Red 48: 2, Pigment Red 48: 3, Pigment Violet 23, Pigment Blue 15, Pigment Blue 15: 1, Pigment Blue 15: 2, Pigment Blue 15: 3, Pigment Green 7 Pigment Green 36 or the like can be used.

  The mixed raw material is formed into a desired shape. Examples of the molding method include injection molding, extrusion molding, compression molding, transfer molding, calendar molding, vacuum molding, and blow molding. In the present invention, it is preferable to use injection molding.

  The heating temperature at the time of injection molding can be selected according to the type of resin. For example, when a polypropylene resin or a polyacetal resin is used as the resin, it is preferably 160 ° C. or higher and 220 ° C. or lower, and more preferably 180 ° C. or higher and 210 ° C. or lower.

  The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.

The following were used as raw materials.
Antibacterial fungicide A: Thiazoline antibacterial fungicide OIT (2-n-octyl-4-isothiazolin-3-one) supported on talc at a ratio of 1: 9 Antibacterial fungicide B: Pyridine Antibacterial and antifungal agent ZPT (zinc pyrithione) supported on zeolite at a ratio of 1: 4 Antibacterial agent A: Silver antibacterial agent (silver ion supported on glass, 0.48 weight of silver ion % Including)
Reactive silicone: PP graft silicone Non-reactive silicone oil: Dimethyl silicone

Plate 1
Pellets produced by heating and melting polypropylene resin at 180 ° C. were injection molded at 200 ° C. to produce plates.

Plate 2
The amount of polypropylene resin shown in Table 1 was heated and melted at 180 ° C. The antibacterial / antifungal agent B, reactive silicone, and non-reactive silicone oil in the amounts shown in Table 1 were compounded to produce pellets. This produced pellet was injection-molded at 200 ° C. to produce a plate.

Plate 3
The polypropylene resins shown in Table 1 were heated and melted at 180 ° C. This was compounded with the amount of antibacterial agent A shown in Table 1 to produce pellets. This produced pellet was injection-molded at 200 ° C. to produce a plate.

Plate 4
The amounts of talc and polypropylene resin shown in Table 1 were heated and melted at 180 ° C. The antibacterial / antifungal agent A, antibacterial / antifungal agent B, reactive silicone, and non-reactive silicone oil in the amounts shown in Table 1 were compounded to produce pellets. The produced pellets were injection molded at 200 ° C. to produce a plate.

Plate 5
The amount of polypropylene resin shown in Table 1 was heated and melted at 180 ° C. The antibacterial and antifungal agent A, antibacterial and antifungal agent B, antibacterial and antibacterial agent A, reactive silicone and non-reactive silicone oil in the amounts shown in Table 1 were compounded to produce pellets. This produced pellet was injection-molded at 200 ° C. to produce a plate.

  The obtained plate was evaluated by the following method.

All plates, fixtures, and reagents used in the pre-test preparation test were sterilized.

Test 1: Bacterial growth inhibition test

Adjustment of bacterial solution
Microbacterium sp. Cultured for about 16 hours at 35 ° C. was mixed with physiological saline so that the bacterial concentration was about 1.0 × 10 ⁶ cfu / mL to prepare a bacterial solution.

Test method
JIS Z 2801 (2010) Antibacterial processed product-Tested based on antibacterial test method and antibacterial effect. 400 μL of the culture solution was dropped onto a 5 × 5 cm ² plate cleaned with 90% ethanol. Thereafter, it was covered with a polyethylene film 4 × 4 cm ² and placed in a petri dish, and cultured at a temperature of 35 ± 1 ° C. and a relative humidity of 90% or more for 24 hours. After culturing, the cells were placed in a stomacher bag, 10 mL of SCDLP medium was added, and the cells were thoroughly examined to wash out the test bacteria. This washing solution was appropriately diluted with physiological saline. Dilutions 1mL cultured in SMA (standard agar medium) was determined number of living bacteria on plates (N _A).

When hypochlorous acid was discharged onto the plate, the culture solution was dropped onto the plate, and then 40 μL of 0.5 ppm hypochlorous acid aqueous solution was dropped and evaluated in the same manner as described above.

About 5 × 5 cm ² PP plate, 400 μL of the culture solution was dropped. This was covered with a polyethylene film 4 × 4 cm ² and placed in a stomacher bag, and 10 mL of SCDLP medium was added and thoroughly examined to wash out the test bacteria. This washing solution was appropriately diluted with physiological saline. 1 mL of the diluted solution was cultured in SMA (standard agar medium), and the number of viable bacteria on the plate (number of initial bacteria N _B ) was determined.

The resulting N _A and N _B are substituted into the following equation to determine the antibacterial activity value (R). The results are shown in Table 2.
_{R = log (N B) -log} (N A) = log (N B / N A)

In the determination plate 1, the difference (ΔR) between the antibacterial activity value (R) when hypochlorous acid was not discharged onto the plate and the antibacterial activity value (R) when discharged was 0.46. Of the plates 2 to 5, the plate having a larger ΔR than the plate 1 was judged to have a synergistic effect of the organic antibacterial / antifungal agent and / or the inorganic antibacterial agent and the functional water.

Test 2: Dissolution rate test

OIT elution rate A glass bottle with an area S of 2.3 x 2.3 cm ² and surface area, if expressed in surface area, a surface area of S = 2.3 x 2.3 x 2 + 2.3 x 0.1 (thickness) x 4 = 11.4 cm ² and ultrapure water 30ml was added. The entire plate was left immersed in water for 24 hours at 40 ° C. Thereafter, the plate was removed from the glass bottle. Next, 6 ml (L _H ) of hexane was added to the glass bottle and stirred well, and the OIT eluted in water was extracted into hexane. The OIT concentration (M _A ) of this hexane solution was calculated by GC / MS.

Next, do not contain antibacterial and antifungal agents, for glass bottle surface area of polypropylene resin were put plates 11.4 cm ^2, measured by GC / MS under the same conditions as above, the concentration of the OIT of operation blank (M _B ) Was calculated.

From the following equation, the elution rate (V _OIT ) of OIT eluted from the plate was determined. The results are shown in Table 2.

V _OIT = O _S × L _H / (S × T) = (O _A −O _B ) × L _H / (S × T)
V _OIT : Dissolution rate of OIT eluted from the plate (g / cm ² / h)
O _S : concentration of OIT eluted from the plate (g / ml) = O _A −O _B
O _A : OIT concentration in hexane solution (g / ml)
O _B : OIT concentration of the operation blank (g / ml)
L _H : Amount of hexane (6 ml)
S: Plate surface area (11.4cm ² )
T: Elution time (24 hours)

Elution rate of ZPT and Ag ions A polypropylene bottle having a surface area S of 11.4 cm ² and 44 ml (L _W ) of ultrapure water were placed in a polypropylene bottle. The whole specimen was left to stand at 40 ° C. for 24 hours while being immersed in water. Thereafter, the plate was taken out of the bottle, and ultrapure nitric acid was added so that the concentration of nitric acid was 5 vol%. The concentration of the concentration of zinc ions in the nitric acid solution (Zn _A) and silver ions (Ag _A) calculated in ICP-MS.

A polypropylene bottle containing a polypropylene resin surface plate with a surface area of 11.4 cm ² that does not contain an antibacterial and antifungal agent is measured by ICP-MS under the same conditions as above, and the zinc ion concentration in the operation blank ( Zn _B ) or silver ion concentration (Ag _B ) was calculated.

Next, the elution rate (V _Zn ) of zinc ions eluted from the plate and the elution rate (V _Ag ) of silver ions were determined respectively using the following formulas. Table 2 shows the elution rate of the obtained silver ions.

_{V Zn = Zn S × L W} / (S × T) = (Zn A -Zn B) × L W / (S × T)
V _Zn : Elution rate of zinc ions eluted from the plate (g / cm ² / h)
Zn _S : concentration of zinc ions eluted from the plate (g / ml) = Zn _A −Zn _B
Zn _A : concentration of zinc ion in nitric acid solution (g / ml)
Zn _B : Zinc ion concentration in the operation blank (g / ml)
L _W : Amount of ultrapure water (44 ml)
S: Plate surface area (11.4 cm ² )
T: Elution time (24 hours)

V _Ag = Ag _S × L _W / (S × T) = (Ag _A −Ag _B ) × L _W / (S × T)
V _Ag : Elution rate of silver ions eluted from the plate (g / cm ² / h)
Ag _S : concentration of silver ions eluted from the plate (g / ml) = Ag _A −Ag _B
Ag _A : concentration of silver ion in nitric acid solution (g / ml)
Ag _B : Silver ion concentration of the operation blank (g / ml)
L _W : Ultrapure water volume (44 ml)
S: Plate surface area (11.4 cm ² )
T: Elution time (24 hours)

From the following formula, the elution rate (V _ZPT ) of _ZPT was determined. The results are shown in Table 2.
V _ZPT = V _Zn / Zn atomic weight × ZPT molecular weight

Test 3: Mold growth inhibition test

Preparation of spore suspension From the original strain of Cladosporium sp. Collected from a general household, it was transferred to a slant medium of potato dextrose agar medium using a platinum loop and cultured for 7 days. 10 ml of 0.005% nonionic surfactant was added to the cultured slant. Further, spores were suspended by blowing air into the slant using a dropper to prepare a spore suspension having a concentration of 1 × 10 ⁶ cfu / mL. At this time, using a hemocytometer, it was confirmed that the spore had a prescribed concentration. Similarly, for Scolecobasidium sp. And Phoma sp. Collected from general households, a spore suspension was prepared in the same manner.

Preparation of test bacterial solution (Test bacterial solution A)
Each prepared spore suspension and Czapek-Dogs liquid medium are mixed at a ratio of Cladosporium sp .: Scolecobasidium sp .: Phoma sp .: Czapek-Dogs liquid medium = 1: 1: 1: 3, and the test bacterial solution A.

Contact with hypochlorous acid water
(Test bacterial solution B)
In the test tube, 6 mL of the adjusted test bacterial solution A and 2.4 mL of 1 mg / L hypochlorous acid water were added, and the hypochlorous acid concentration in the entire test tube was adjusted to 0.3 mg / L. Mix well by vortex, contact mold spores with hypochlorous acid, and prepare test bacterial solution B containing hypochlorous acid water.

(Test bacterial solution C)
Using the same method of preparation as test bacterial solution B, mix 6 mL of the prepared test bacterial solution A and 1.2 mL of 10 mg / L hypochlorous acid water to a total hypochlorous acid concentration of 1.7 mg / L. Test bacterial solution C containing chloric acid water was prepared.

Contact with silver ion water (Test Bacterial Solution D)
4 μL of the adjusted test bacterial solution A 2 mL and 0.1 mg / L of silver ion water were placed in a test tube, and the total silver ion concentration in the test tube was 0.2 μg / L. Mix well by vortexing, contact mold spores with silver ions, and prepare test bacterial solution D containing silver ion water.

(Test bacterial solution E)
Test bacterial solution E containing silver ion water by mixing 2 mL of prepared test bacterial solution A and 10 μL of 1 mg / L silver ion water to give a total silver ion concentration of 5 μg / L in the same manner as test cell solution D Was prepared.

Test Method A plate cut to 50 mm square was placed on an inorganic salt agar medium, and 16 pieces of 25 μL of the test bacterial solution A were dropped on the plate. A petri dish was capped and cultured at a temperature of 28 ± 1 ° C. and a relative humidity of 90% or more for 2 weeks for testing. A similar test was performed on the test bacterial solutions B to E. In addition, the test was performed within 10 minutes after preparing each test bacterial solution.

After the determination culture, the number of test bacterial solutions in which mold growth was visually observed among the 16 test bacterial solutions dropped was counted. This number was substituted into the following formula to calculate the mold inhibition rate. In addition, the thing which growth of mold | fungi was recognized shall have the growth of a mycelium or the thing with coloring. The mold inhibition rate obtained is shown in Table 2.
Mold inhibition rate (%) = (1-Number of test bacterial solutions whose mold was confirmed visually / 16 pieces) x 100

1: Resin member 2: Dirt 3: Fungi 4: Biofilm 5: Mold

Claims (15)

Functional water generating means for generating functional water;
Functional water discharge means for discharging the generated functional water;
In a watering device having a resin member that receives discharged functional water,
The resin member is a watering device including an organic antibacterial and antifungal agent. Functional water generating means for generating functional water;
Functional water discharge means for discharging the generated functional water;
In a watering device having a resin member that receives discharged functional water,
The resin member includes an inorganic antibacterial agent or an organic antibacterial fungicide,
A watering device in which the elution rate of the inorganic antibacterial agent or the organic antibacterial and antifungal agent is 10 ⁻⁹ g / cm ² / h or more.   The water-circulating device according to claim 1 or 2, wherein the functional water generating means generates functional water by electrolyzing water. The water-circulating device according to any one of claims 1 to 3, wherein the functional water generating means generates functional water of 5 mg / L or less. The watering device according to any one of claims 1 to 4, wherein the resin member includes 0.01% by mass or more of the organic antibacterial and antifungal agent.   The water function apparatus according to any one of claims 1 to 5, wherein the functional water is hypochlorous acid water or bactericidal metal ion water. The functional water is hypochlorous acid water,
The water circulation device according to claim 6, wherein the functional water discharge means discharges hypochlorous acid water having a concentration higher than 0.3 mg / L. The functional water is bactericidal metal ion water,
The water function apparatus according to claim 6, wherein the functional water discharge means discharges bactericidal metal ion water having a concentration of 0.2 µg / L or more.   9. The watering device according to claim 6, wherein the bactericidal metal ion water is silver ion water.   The watering device according to any one of claims 1 to 9, wherein the resin member includes an inorganic antibacterial agent.   The water-based device according to any one of claims 2 to 10, wherein the inorganic antibacterial agent is a silver antibacterial agent.   The water-circulating device according to any one of claims 1 to 11, wherein the organic antibacterial and antifungal agent is a thiazoline antibacterial and antifungal agent and / or a pyridine antibacterial and antifungal agent.   A bathroom including the watering device according to claim 1.   A bathroom vanity comprising the watering device according to any one of claims 1 to 12.   A kitchen including the watering device according to any one of claims 1 to 12.