JPH04265327A - Drainage trap - Google Patents

Abstract

PURPOSE:To prevent pollution of the surface of a trap caused by microbes and to make it possible to keep it always in a clean state by forming an antibacterial resin film on the surface of the drainage trap having a large number of openings on the sides and the bottom thereof. CONSTITUTION:An antibacterial resin film is formed on the surface of a drainage trap of metal, etc., having a large number of openings on the sides and the bottom thereof. The antibacterial resin film is such that an antibacterial agent 9 formed of a silica gel having at least one of silver complex salt and plant extract having the surface coated with a coating material is dispersed in thermosetting or thermoplastic flexible and transparent waterresisting resin 8. According to the constitution, antibacterial and antifungus effect can be kept for a long period of time by slow releasing effect of an antibacterial and antifungus substance.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a drain trap used for a sink or the like.

0002

2. Description of the Related Art Conventionally, a net called a trap, as shown in FIG. 2, has been installed at the drain outlet of a sink in order to prevent foreign matter from being flushed out into the sewer. This net has a cylindrical shape with a diameter of about 110 mm and a depth of about 130 mm, and is composed of a plate with an open top and a large number of holes 1 and 2 with an opening diameter of about 2 mm at the sides and bottom. Further, this net body is provided with a handle 3 and has a structure that allows it to be attached to and detached from the drain port 4. A cap 6 for retaining odors is provided between a drain port part 4 for storing a trap and a water pipe 5.

[0003] Even if materials generated during operations such as cooking in the sink accidentally flow into the drain, they will be captured by this trap, thereby preventing large contaminants from entering the sewage. The plate material having a large number of holes is usually made of polypropylene resin molding or stainless steel mesh to facilitate daily cleaning work.

In particular, drain traps for sinks whose mesh body is made of stainless steel can have a larger opening area compared to resin molded products of the same size due to the material's strength characteristics, and the material's properties It is also useful for its texture.

[0005]

[Problems to be Solved by the Invention] However, as the above-described traps are used for many years, dirt adheres to their surfaces and microorganisms are generated, increasing the sense of uncleanliness and at the same time reducing the opening area of the net. Therefore, there is a need for a waste water trap that can prevent microorganisms from adhering to it or inhibit the growth of microorganisms while retaining the texture of the stainless steel trap. Furthermore, the antibacterial and antifungal material used therein is desired to be a material that suppresses elution into wastewater as much as possible and is highly safe against environmental pollution even if it elutes.

The present invention meets this need.

[0007]

[Means for Solving the Problems] The present invention is a drain trap member having a large number of openings on the side and bottom surfaces and having an antibacterial resin coating provided on the surface of the drain trap.

Furthermore, the present invention is characterized in that silica gel carrying an antibacterial and antifungal material is dispersed as an antibacterial material in a thermosetting or thermoplastic flexible transparent water-resistant resin.

[0009]

[Function] The antibacterial resin film used in the present invention has, in part, the antibacterial and antifungal effect of silver salts, which is highly safe for humans and animals, supported on silica gel as a silver sulfate complex, and is stably effective for a long period of time. It has a structure in which it is dispersed in a water-resistant resin so that it lasts for a long time. Alternatively, one or a mixture of structures in which allyl isothiocyanate, which is an antibacterial component of wasabi, is similarly supported on a silica gel carrier, can be used.

Furthermore, by using silica gel as a carrier, there is a sustained release effect of the antibacterial and antifungal material adsorbed thereon, and by applying a coating material thereon, the thermal stability of the antibacterial and antifungal material can be improved. increase. This only increases the thermal stability of the antibacterial and antifungal material against the heat generated during resin layer formation when the antibacterial agent of the present invention is dispersed in a water-resistant resin to impart antibacterial properties to the surface of the resin layer. Instead, it produces an effect that suppresses color change and photosensitive coloring of resin over time.

Furthermore, by using silica gel powder as a light-transmitting material having a refractive index comparable to that of the synthetic resin as a carrier for adsorbing the antibacterial and antifungal material, the antibacterial material can be applied to the resin surface without coloring the resin. performance can be imparted.

[0012] Due to the antibacterial and antifungal effect of the resin layer formed on the trap surface, the trap surface and the vicinity of the many holes are contaminated with microorganisms, and the actual opening area is less likely to be clogged.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below with reference to FIG. 7 in Fig. 2 is made of stainless steel SUS304 alloy and has a thickness of 0.
．． A net with a diameter of 5 mm and an opening diameter of 2 mm constitutes most of the side wall of the trap. 8 is a resin layer in which an antibacterial agent 9 is dispersed. Note that the net has the same structure as the conventional one and is suspended inside the drain.

The method for producing antibacterial agent 9 will be explained step by step below. For 100 parts by weight of silver acetate, approximately 500 parts by weight of sodium sulfite and sodium thiosulfate are added to hydrated Na2S.
Approximately 300 parts by weight of 2O3.5H2O is dissolved in chlorine-free water and mixed with sufficient stirring to obtain a silver thiosulfate complex salt aqueous solution.

The carrier used in the present invention is silica gel powder,
The particle size is 10 microns or less since it is dispersed in the resin film. This silica gel is prepared by drying it at 180° C. for 2 hours or more.

[0016] The above silver complex salt aqueous solution equivalent to about 8 parts by weight of silver acetate is mixed with 100 parts by weight of the silica gel carrier,
After adsorbing the silver complex salt, hygroscopic water is released and the material is pulverized to the original particle size to obtain a material in which the antibacterial and antifungal material is adsorbed onto the carrier.

Approximately 100 parts by weight of tetramethoxysilane is dispersed in a solution using ethyl alcohol as a solvent in 100 parts by weight of a carrier adsorbed with an antibacterial and antifungal material, and then pure water is added and hydrolyzed to obtain an antibacterial and antifungal material. A part or all of the surface of the carrier on which the fungal material has been adsorbed is coated and dried to obtain an antibacterial agent.

The antibacterial agent produced by the method of this example is dissolved in a solvent to prepare a paint in which 5 parts by weight of the antibacterial agent is uniformly dispersed in an acrylic resin based on 100 parts by weight of the resin.

On the other hand, the entire surface of the net 7 was sandblasted with 40 alumina particles to improve the adhesion of the resin layer by modifying the surface of the net.

The paint is sprayed onto the pretreated mesh 7 uniformly without pinholes to form a resin layer 8 having a thickness of about 50 microns, thereby completing the drain trap for sinks of the present invention.

[0021] Also, the bottom part of the drain trap is also made of a stainless steel member having a large number of holes like the side parts, and the structure of this face was also treated in the same way as the side parts.

[0022] The drainage trap for a sink according to the present invention was subjected to an anti-fungal test and an anti-bacterial test as shown below. As a result, the antibacterial spectrum shown in Table 1 was obtained, and practical antibacterial and antifungal performance was confirmed.

The anti-mildew test was conducted in accordance with the halo test method of the anti-mildew test for textile products of the Japanese Industrial Standards (JIS Z 2911). The mold used was Clados
porium cladosporioides, C
haetorium globosum, Penic
illium citrium, asperigil
lus niger, and evaluation was performed after 14 days. In addition, the antibacterial test was conducted using Escherichia coli, S.
taphyrococcus aureus, Bac
A halo test method was performed using S. illus subtilis, and evaluation was performed after 7 days.

[0024]

[Table 1]

Although silver complex salt was used as the antibacterial and antifungal material in the above examples, similar results were obtained when allyl isothiocyanate was used as the plant extract.

In order to prepare silver thiosulfate complex salt, water-soluble silver salts such as silver nitrate can be used instead of silver acetate, sulfites such as potassium sulfite, ammonium sulfite, etc., sodium hydrogen sulfite, potassium hydrogen sulfite, and methane can be used instead of sodium sulfite. Hydrogen sulfites such as potassium sulfite and ammonium hydrogen sulfite may be used alone or in mixtures, water-soluble thiosulfates such as ammonium thiosulfate may be used instead of sodium thiosulfate, and organic silicon compounds such as tetraethoxysilane may be used instead of tetramethoxysilane. The same result can be obtained.

Furthermore, antibacterial and antifungal materials such as quaternary ammonium salts and chlorhexidine gluconate can also be used. It can also be constructed using a plurality of antibacterial and antifungal materials.

In addition to the above organic silicon compounds, coating materials such as wax and stearic acid compounds can also be used as coating materials.

[0029]

[Effects of the Invention] The drain trap of the present invention maintains its antibacterial and antifungal effect for a long period of time due to the sustained release effect of the antibacterial and antifungal material, and can always keep the drain trap surface clean against microbial contamination. be. In addition, it is possible to prevent the many holes provided on the side and bottom surfaces from being clogged by grown bacteria.

[0030] Furthermore, by using silica gel as a carrier, which has a light transmittance similar to that of a synthetic resin and has a low moisture absorption rate in a low humidity atmosphere, a transparent synthetic resin can be obtained even when an antibacterial agent is dispersed. When applied to impart antibacterial properties to the synthetic resin surface, the color of the underlying synthetic resin can be maintained as is. Furthermore, when the trap is made of a metal material, it is possible to bring out the color of the underlying stainless steel and maintain the texture of the material.

[Brief explanation of the drawing]

FIG. 1: Cross-sectional view of a drainage trap network material according to an embodiment of the present invention.

[Figure 2] Main part structural diagram of Figure 1

[Explanation of symbols]

1 Side hole 2 Bottom hole 3 Handle 4 Drain port 5 Water pipes 6 Cap 7 Net body 8 Resin layer 9 Antibacterial agents

Claims (4)

[Claims] 1. A drain trap characterized in that an antibacterial resin coating is formed on the surface of the drain trap, which has a large number of openings on the side and bottom surfaces. 2. The drain trap according to claim 1, wherein the drain trap is made of metal. 3. The antibacterial resin coating is a thermosetting or thermoplastic, flexible, transparent, water-resistant resin that coats the surface of silica gel containing at least one of a silver complex salt and a plant extract. 3. The drain trap according to claim 1, wherein the trap is coated with an antibacterial agent and dispersed therein. [Claim 4] Claim 2, characterized in that the metal surface is blasted and an antibacterial resin coating is provided thereon.
Drainage trap as described.