JPH05117123A - Appliance for equipment used in bathroom and toilet room - Google Patents

Abstract

PURPOSE:To prevent microorganisms such as bacteria, algae or molds from propagating on parts, attachments, appliances and housing materials, etc., of apparatuses in a bathroom or a toilet room and iron rust, etc., from forming on metallic parts. CONSTITUTION:Appliances for equipment used in a bathroom and a toilet room are constructed by applying constituent members, made of a resin and containing an antimicrobial and rust preventing agent prepared by blending three of one or plural antimicrobial ionic sources selected from the group consisting of silver, copper, zinc and compounds of the metals capable of eluting ions having antimicrobial performance, one or plural carriers selected from the group consisting of calcium carbonate, calcium phosphate and ceramic materials capable of adsorbing and carrying the antimicrobial ionic sources and zinc oxide whisker having a single crystal tetrapodal three-dimensional structure as chief components to a basin 1, a bathtub, a lid, a drain pipe, a decorative panel, a chair, a drainboard, a soap box, etc.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to parts, accessories, fixtures, housing materials, etc. of equipment for bathrooms and washrooms. More specifically, the resin products used for these contain an antibacterial / rust preventive agent. It relates to bathroom and toilet equipment.

2. Description of the Related Art In recent years, the degree of airtightness of houses has become higher, and the temperature and humidity inside the house have been less changed throughout the year as the living environment has become more sophisticated due to the spread of air-conditioning systems. Humid bathrooms and washrooms, especially bacteria, molds,
The environment is suitable for the reproduction of microorganisms such as algae. For example, bathtubs, lids, slats, chairs, soap boxes, etc., toothbrushes for toilet vanities in the washroom, storage parts for cups, parts such as water pipes, accessories, fixtures, as well as doors and wall materials. , Polypropylene (P
P), polyvinyl chloride (PVC) and other various synthetic resins are widely used, but these resin parts cause microbial deterioration such as darkening and slime due to the growth of microorganisms such as bacteria and fungi, and resin parts It is also a cause of rusting of metal parts such as buried steel. These not only give uncleanness to the bathroom and washroom but are also unsanitary, and the occurrence of iron rust and the like has been a cause of weakening the metal member. Conventionally, most of the contaminated bathroom / washroom equipment as described above is removed by regular cleaning work such as washing off with a detergent containing a chlorine-based disinfectant. There is an example in which an antibacterial agent is kneaded into it to give it antibacterial properties. A detergent containing a bactericide may adversely affect the human body, especially the skin, such as so-called rough skin, and it is expected that the antibacterial agent is kneaded into the resin itself.
It is necessary to increase the amount added, and it has not been fully adopted in terms of cost.

DISCLOSURE OF THE INVENTION The present invention is mainly made of steel, which is effective even when a small amount of an antibacterial agent is mixed into various resin members, and which is embedded in or contacted with the resin member. It aims to provide bathroom / washroom equipment products containing an antibacterial / anticorrosive agent that also has an antirust effect on metal parts.

In order to solve the above-mentioned problems, the present invention means an antibacterial property (a function of inhibiting or suppressing the growth of microorganisms such as bacteria, fungi and algae. Is referred to as an antibacterial agent), and one or more antibacterial ion sources selected from the group consisting of silver, copper, zinc, and compounds of these metals, and carbonic acid that adsorbs and carries the antibacterial ion source. Antibacterial / rust prevention mainly composed of one or more carriers selected from the group consisting of calcium, calcium phosphate, and ceramic materials and zinc oxide whiskers having a three-dimensional structure of single crystal tetrapot The combined agent is used for bathroom and toilet equipment.

According to the present invention, according to the above-mentioned constitution, silver ions, copper ions or zinc ions which are generally pollution-free and are also used in drinking water purifiers and the like are used as an antibacterial ion source having an antibacterial property and become an antibacterial ion source. Calcium carbonate, calcium phosphate (naturally as hydroxyapatite Ca ₁₀
It is also called apatite, which is represented by the chemical formula of (PO ₄ ) ₆ (OH) ₂ , and is a universally prolific phosphate mineral group. Ceramic materials (naturally acid clay, Dosenkyo, etc.) An antibacterial and rust preventive agent that uses non-polluting substances such as ceramics materials, is inexpensive, and tends to have a large surface area, and this support is mixed with zinc oxide whiskers with a three-dimensional structure of a single crystal tetrapot. Since it is an equipment item for bathrooms and washrooms that has been included, there is no damage to resin parts or buried metal parts due to the growth of microorganisms such as bacteria, mold, algae, etc., and deterioration due to rust, discoloration, deterioration, etc. It's a good thing. In addition to the features described above, (1) the zinc oxide whiskers to be blended are in a single crystal tetrapot shape, and have a unique shape that they grow in four directions, which is not found in other crystals. Therefore, (a) the activity and stability are strong, and the antibacterial performance of silver ion, copper ion, zinc ion, etc. is remarkably increased. Therefore, not only the antibacterial and anticorrosive properties of the antibacterial and anticorrosive agents are great, but the content of expensive silver or copper is remarkably small, so that it is inexpensive and has excellent antibacterial and antirust properties. It is possible to realize the required equipment supplies. (B) Since the antibacterial performance of silver ions, copper ions, zinc ions, etc. can be improved by mixing zinc oxide whiskers,
The content of silver, copper, zinc, etc. is 1/10 to 1/1000 compared to the case where conventional zinc oxide whiskers are not mixed.
Can be reduced to As a result, of course, the amount of metal ions eluted in water can be made much smaller than the emission standard. Therefore, it is possible to realize equipments for bathrooms and washrooms that have antibacterial and anticorrosive functions that are safe for environmental protection and impact on the human body. (C) Zinc oxide whiskers have a whisker fiber length of 2 to
It ranges from 3 μm to several tens of μm and has a specific gravity of 5.7.
8 (by air permeation method), sublimation temperature 1720 ° C, tensile strength 270-280kgf / cm ² , bending strength 440kgf / cm ² , bending elastic modulus 20,000-21,000kgf / cm ^2, etc. -When mixed with resin parts that compose toilet equipment, there is an advantage that mechanical strength is enhanced by mixing zinc oxide whiskers. (2) The adsorption carrier is a commonly used inexpensive non-polluting substance such as calcium carbonate, calcium phosphate, and ceramics. When a water-soluble metal salt solution such as silver nitrate, copper sulfate or zinc sulfate is used This is a simple method that allows adsorption and support by simply immersing the support in these solutions. And all of them can obtain a sufficiently large specific surface area.

【Example】

(Example 1) Calcium phosphate carrying silver 0.5 to 0.5
20 wt% and 1 to 40 wt% of zinc oxide whisker powder are kneaded with a resin using an extruder and extruded to obtain a composite resin pellet. By molding this using an ordinary injection molding machine or an extrusion molding machine, a desired equipment for bathroom / washroom equipment can be manufactured. Further, even when the equipment is manufactured using a thermosetting resin, a desired member can be manufactured through known steps, as in other inorganic filler compounding methods. As a specific example, a commercially available calcium phosphate (hydroxyapatite, BET surface area 60 m ² / g) is immersed in a silver nitrate complex ion solution and then dried to carry 0.05 wt% of silver phosphate (hereinafter abbreviated as Ag hydro). ) Got. This was dry-blended with zinc oxide whisker powder and polyvinyl chloride resin (PVC), extruded with a single-screw extruder, cooled, and cut to prepare composite resin pellets. The mold used to evaluate the antibacterial effect is JIS2
911 "Mold resistance test method", 1st group aspyrgillus niger, 2nd group penicillium citrinum (blue mold), 4th group cladsporium cladsporioides,
Group 5 is five species of ketodium globosum and Candida albicans (fungi). The test method was to use a Sabouraud agar medium, and apply the test bacteria to the
After standing for 150 hours at 70 ° C. and 70% to 75% humidity, the state of bacterial reproduction was examined. At the same time, the steel wire was attached to the inside of the water pipe extruded using the resin of various compositions shown in (Table 1), and the occurrence of iron rust due to the steel wire was also examined. The antibacterial / rust prevention results are shown in (Table 1). As is clear from (Table 1), the water pipe of this example has a higher antibacterial / rust-preventing effect than the comparative example. It is also clear that the amount of Ag hydro can be reduced by incorporating zinc oxide whiskers.

[Table 1] An electron micrograph of zinc oxide whiskers mixed in the antibacterial / rust preventive agent according to the present invention is shown in FIG. Although calcium phosphate was used as the carrier in Example 1, the same antibacterial and anticorrosive effects were obtained even if ceramics such as calcium carbonate, acid clay, and Dosen-ko were used instead. The same effect can be obtained by using copper or zinc instead of silver. Further, in Example 1, an example in which silver nitrate complex ions were used as the antibacterial ion source was explained, but even if silver, copper, zinc or a compound thereof is used as the antibacterial ion source, the antibacterial / rust prevention effect is the same. Moreover, even if calcium phosphate such as hydroxyapatite, a ceramic material such as acid clay or Dosen near is used as the carrier instead of calcium carbonate, the antibacterial and rust preventive effects are not changed. Further, in Example 1, polyvinyl chloride resin (PVC) was used as the resin mixed with the antibacterial / rust preventive agent, but polyethylene, polypropylene (PP), ABS,
Not only thermoplastic resins and synthetic rubbers suitable for injection molding and extrusion molding such as polyamide and polystyrene, but also thermosetting resins such as epoxy and melamine can be widely applied. (Example 2) An antibacterial / rust preventive agent according to the present invention was mixed into various resins, and a vanity dressing table was prototyped using various resin members shown in FIGS. 2 and 3, and a conventional vanity vane of the same type was prepared. As a comparative example, the antibacterial and antirust effects were evaluated by a practical acceleration test under high temperature and high humidity. 2 and 3 are a perspective view and a side view of a prototype vanity, where 1 is a wash basin, 2 is a mirror, 3 is a currant, 4 is a counter, 5 is a front plate, 6 is an extractor, 7 Is a storage part, and 8 to 11 are parts or portions of the storage part 7. That is, 8 is a door, 9 is an outer surface of the side plate, 10 is an inner surface of the side plate, and 11 is a bottom plate. Reference numeral 12 is a drainage pipe, and 13 is a water distribution pipe. The parts using the various composite resins containing the antibacterial / rust preventive agent according to the present invention are manufactured by the injection molding method for the washbasin 1, the counter 4, the front plate 5, the outer surface of the extractor 6 and the door 8 of the storage section 7. The inner and outer surfaces, the outer surface 9 of the side plate, the inner surface 10 of the side plate, and the inner surface of the bottom plate 11 are constituted by a decorative plate obtained by laminating a resin plate by an extrusion method on one side or both sides of a wooden plywood. The drain pipe 12 and the water distribution pipe 13 are formed by an extrusion method, and a spiral steel wire is embedded in the drain pipe 12. The test atmosphere is the same as that of the above-mentioned weather meter, and a total of 15 people per day can make regular wash and hand wash.
It was carried out for a period of one month, during which cleaning was intentionally omitted.
After the test, the vanity was disassembled and the stain condition of each resin member was visually determined. The results are shown in (Table 2).

[Table 2] As is clear from (Table 2), in Example 2 according to the present invention, the proliferation of microorganisms such as mold was suppressed, the antibacterial effect was less likely to cause stains, and the rust preventive effect was also recognized, as compared with the comparative example. In Examples 1 and 2, the vanity table was described in detail as an example.
INDUSTRIAL APPLICABILITY The present invention is effective for the resin member in the bathroom where the vanity is installed and, in many cases, in the bathroom with higher humidity which is adjacent to the bathroom. That is, parts and accessories such as bath tubs and their lids, tubs, chairs, soap boxes, shelves, slats, etc., as well as resin materials that make up bathroom, toilet doors, wall materials, housing materials such as ceiling materials, etc. Not only anti-bacterial in general equipment supplies of
It has an anticorrosive effect.

As is apparent from the above description of the embodiments, according to the present invention, one or more metals selected from the group consisting of silver, copper, and zinc serving as an antibacterial ion source, or those metals 1 selected from the group consisting of calcium carbonate carrying a metal compound, calcium phosphate, and ceramics
By using one or a plurality of carriers and a powder or a composite resin mixed with zinc oxide whiskers, it is possible to provide a bathroom / washroom facility article having an excellent antibacterial / rust-preventing function.

[Brief description of drawings]

FIG. 1 is an electron micrograph showing zinc oxide whiskers contained in an antibacterial / anticorrosive agent used in Examples of the present invention.

FIG. 2 is a perspective view of a vanity table according to a second embodiment of the present invention.

FIG. 3 is a side view of the above.

[Explanation of symbols]

 1 Washbasin 4 Counter 5 Front plate 6 Extracted 7 Storage section 12 Drain pipe 13 Water pipe

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area A47K 3/00 7150-2D

Claims (4)

[Claims] 1. Silver which elutes ions having antibacterial properties,
Selected from the group consisting of one or more antibacterial ion sources selected from the group consisting of copper, zinc, and compounds of these metals, and a group consisting of calcium carbonate, calcium phosphate, and ceramic materials that adsorb and support the antibacterial ion sources. A bathroom / washroom equipment article containing an antibacterial / anticorrosive agent mainly composed of one or more carriers and zinc oxide whiskers having a single crystal tetrapot-like three-dimensional structure. 2. An equipment item for bathroom / washroom, wherein the antibacterial / anticorrosive agent according to claim 1 is mixed with a resin part which is a component of the equipment article for bathroom / washroom. 3. A single crystal, three-dimensional tetrapod-shaped zinc oxide whisker mixed in an antibacterial / rust-preventive agent in a weight ratio of 10%.
The bathroom / washroom equipment article according to claim 1 or 2, which has an antibacterial / rust-preventing agent contained in an amount of 10% as a lower limit. 4. A bathroom according to claim 1, 2 or 3, which comprises one or more sources of antibacterial ions consisting of silver, copper, zinc and compounds of these metals, with the upper limit being 1% by weight as metal. -Toilet equipment supplies.