JPH0884691A - Warm-water washing seat - Google Patents

Abstract

PURPOSE: To prevent proliferation of miscellaneous bacteria and mold, by mak ing at least one member among composition materials of the seat, the seat cover, and a body case of a warm-water washing seat formed by a high- crystallizable polypropylene resin or a resin body composed of a high- crystallizable polypropylene resin and an elastic body. CONSTITUTION: This warm-water washing seat is provided with a seat 1, a washing nozzle 2 for discharging warm-water to wash the parts and a body case 3 of the warm-water washing seat. All of these are formed by a resin body composed of a high-crystalline polypropylene resin and an elastic component in which an antimicrobial agent is included. The high-crystalline polypropylene resin is made to have a stereoregularity degree of 98% or more and the elastic component is made of at least one kind between polyethylene resin and ethylene-propylene rubber. Thereby, the warm-water washing seat has an improved chemical-proof activity, and solvent cracks and a problem of deteriorated bending strength are not generated even when a strong cleaning agent is used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm water washing toilet seat having a toilet seat heating function and a hot water washing function which are widely used for home use. In particular, the present invention relates to a resin material used for a toilet seat sheet, a toilet lid, a main body case and the like in a warm water washing toilet seat that is clean and has excellent chemical resistance.

[0002]

2. Description of the Related Art A conventional warm water washing toilet seat will be described with reference to FIGS. 1 is a toilet seat sheet, 2 is a cleaning nozzle for discharging hot water to wash a local part, 3 is a main body case of a hot water cleaning device, 4 is an operating unit for operating a hot water cleaning and drying function, and 5 is a cleaning switch for turning on / off the hot water discharge , 6 is a toilet bowl,
7 is a toilet lid. Toilet seat 1, body case 3 and toilet lid 7
Is mainly composed of a molded product of acrylonitrile / butadiene / styrene copolymer resin (hereinafter referred to as ABS). Toilet seat 1 has a built-in heater, about 35 to 4
It is heated and kept at 0 ℃, and it is warm and comfortable in the cold winter. When using, sit on the toilet seat 1 with your butt against it. When urine or a woman finishes urine, the cleaning switch 5 is pressed to eject hot water from the cleaning nozzle 2 to clean the local area. Further, when a man urinates, he uses it while aiming inside the toilet bowl 6 with the toilet seat seat raised.

Many hot water washing toilet seat members are in direct contact with the skin, and due attention has been paid to their hygiene, many ideas have been put to practical use. Recently, a wiping cloth impregnated with a germicide, a toilet seat sheet made of ABS in which an inorganic antibacterial agent is dispersed, and the like have been partially used.

As the structural material of the toilet bowl 6, since ceramics are the main constituent, various detergents or cleaning agents mainly containing acids are widely used.

[0005]

However, when used in the above-mentioned conventional structure, if the stool is stool, the stool that has fallen into the toilet repels the water accumulated in the toilet and the back plate of the toilet seat 1 is cleaned of dirt. Small pieces may adhere. Further, when the toilet seat 1 is raised to make a urine, the back plate of the toilet seat 1 or the front part of the body case 3 may be urinated. In addition, the surface of the toilet seat sheet 1 that touches the hips when used, and the toilet lid 7 that is opened and closed by hand are also contaminated by dirt on the skin or skin-resident bacteria. If these operations are repeated every day, stains increase, bacteria and mold grow, and it is very unsanitary.

ABS, which is a constituent material for toilet seat sheets, toilet lids, body cases, etc., has a relatively large surface energy, and as a result, it is easy to be contaminated and stains adhere firmly, so that it is difficult to remove contaminants. have. Therefore, in order to remove these contaminants, it is usual to clean the surface of the toilet seat with warm water wash with a co-cleaning agent containing various surfactants. However, ABS has poor chemical resistance and is particularly apt to be dipped in a surfactant, and the surfactant is left uncleaned during cleaning, and even if it is completely wiped off, the surfactant does not come in contact for a short time during cleaning. By repeating the above, there is a problem that solvent cracks may occur in the toilet seat sheet, the toilet lid, the main body case, or the like, or the bending strength may be significantly deteriorated, and the product may not be usable. For that reason, a cleaning agent for hot-water washing toilet seats is on the market, but is rarely used because the amount of the surfactant is small and the cleaning ability is poor. Further, even if these special cleaning agents are used for a long time, they may cause solvent cracks or significantly deteriorate bending strength.

[0007] During cleaning of the toilet bowl, a high-concentration detergent-containing detergent or a spray of a hydrochloric acid-added detergent adheres to the toilet seat sheet, causing solvent cracks.

In a toilet seat sheet formed of ABS in which an inorganic antibacterial agent is dispersed, since the matrix resin is amorphous ABS and the antibacterial agent is difficult to be oriented in the toilet seat sheet,
There was a problem that the antibacterial effect was poor and the antifungal effect could hardly be expected. The problem of solvent cracking or bending strength deterioration due to a surfactant or the like is the same as described above.

Further, ordinary general polypropylene is inferior in mechanical strength and surface hardness to highly crystalline polypropylene and is not suitable for use as a toilet seat sheet, a toilet lid, or a main body case.

The present invention solves the above-mentioned problems, and it is easy to remove stains and is easy to remove. Even when a cleaning agent such as a surfactant is used at the time of cleaning, solvent cracks do not occur, and it is convenient. Another object of the present invention is to provide a sanitary and high-performance hot water washing toilet seat that effectively prevents the growth of bacteria and mold caused by stool scattering.

[0011]

In order to achieve the above object, the present invention has at least one of the constituent materials of the toilet seat sheet, toilet lid and body case of the hot water washing toilet seat made of a highly crystalline polypropylene resin or a highly crystalline material. It is formed of a resin body composed of a polypropylene resin and an elastic body.

Further, at least one member of the constituent materials of the toilet seat sheet, the toilet lid and the main body case is a highly crystalline polypropylene resin in which an antibacterial agent is dispersed, or a resin body composed of a highly crystalline polypropylene resin and an elastic body. It is formed by dispersing an antibacterial agent.

[0013]

The present invention has a low surface energy effect of the highly crystalline polypropylene resin having the above-mentioned structure, and thus is less likely to become dirty.
Moreover, it is easy to remove, and it becomes easy to maintain the cleanliness of the surfaces of the toilet seat sheet, the toilet lid, the body case, and the like. In addition, since dirt does not easily adhere, the growth of bacteria and mold that grow using dirt as a nutrient source is moderated, and cleanliness is improved.

Even when cleaning is required due to repeated use over a long period of time, the highly crystalline polypropylene resin does not corrode even if it comes into contact with a surfactant due to its high chemical resistance. An excellent cleaning agent can be used to speed up cleaning. Moreover, there is no need to worry about solvent cracks or bending strength deterioration due to the cleaning agent.

Further, in the case of the constitution composed of the highly crystalline polypropylene resin and the elastic body, the elastic body penetrates between the particles of the anti-crystalline polypropylene resin and serves as an adhesive, so that the impact strength is improved. The characteristics in actual use are greatly improved.

Further, in the constitution in which the antibacterial agent is dispersed in the highly crystalline polypropylene resin, various bacteria and molds which grow by the action of the antibacterial agent as a nutrient source are the dirt attached to the surfaces of the toilet seat sheet, the toilet lid and the body case. Prevent the growth of. As a characteristic of the high crystalline polypropylene resin,
The affinity with the antibacterial agent is not so good, and when both are dispersed, the antibacterial agent tends not to be uniformly dispersed, and the antibacterial agent is more densely distributed on the surface of the resin molded body. Therefore, it becomes possible to exhibit an effective antibacterial action with a smaller amount of the antibacterial agent.

[0017]

EXAMPLES The present invention will be described in detail below with reference to examples.

FIG. 1 shows a warm water washing toilet seat of the present invention. Reference numeral 1 is a toilet seat sheet, 2 is a cleaning nozzle for discharging hot water to wash a local part, 3 is a main body case of a hot water cleaning device, and each is a resin body composed of a highly crystalline polypropylene resin containing an antibacterial agent and an elastic body component. Is formed by.

The highly crystalline polypropylene resin used in the present invention has a crystallinity of 65% or more and a stereoregularity of 97.
% Or more can be given. Particularly, those having a stereoregularity of 98% or more have extremely high surface hardness and are not easily scratched and are good. The crystallinity of the general polypropylene used in the comparative example is 60%.

As the elastic component in the present invention, polyethylene, ethylene-propylene rubber, acrylic ester copolymer, chlorinated polyethylene, ethylene vinyl acetate copolymer, etc., polybutadiene, natural rubber, isoprene rubber, butadiene rubber, chloroprene rubber , Acrylonitrile-butadiene rubber, butyl rubber, acrylic rubber, silicone rubber, urethane rubber and the like.
Further, the compounding ratio of the elastic material component is preferably 5 to 15 parts by weight per 100 parts by weight of the highly crystalline polypropylene resin, but it is not limited thereto.

The antibacterial agents in the present invention include inorganic antibacterial agents such as silver nitrate, silver sulfate and silver chloride. Zeolite supporting silver, copper, zinc or tin. And silica gel supporting silver, copper, zinc or tin.
The mixing ratio of the antibacterial agent is resin 1 for the inorganic antibacterial agent.
When the amount is less than 0.1 parts by weight, the antibacterial property is not recognized, and when the amount exceeds 5 parts by weight, the properties of the resin composition such as coloring are significantly impaired. This is 0.5
To 3 parts by weight is preferable.

As organic antibacterial agents, phenyl ether derivatives such as 10,10'-oxybisphenoxaarsine, N-haloalkylthio compounds such as cyclofluanid, 2- (4-thiazolyl) benzimidazole (TB
Z) and other imidazole derivatives, 2,3,5,6 sulfone derivatives such as detracolol-4- (methylsulfonyl) pyridine, and quaternary ammonium salts such as ceryldimethylethylammonium bromide, but are not limited thereto. is not. With respect to the organic antibacterial agent, if it is less than 0.02 parts by weight with respect to 100 parts by weight of the resin, almost no antifungal property is recognized, and if it exceeds 5 parts by weight, there is a problem such as blooming. It is preferably in the range of 0.05 to 1 part by weight.

A concrete example will be described below. (Example 1) Highly crystalline polypropylene resin (crystallinity 6
5%, stereoregularity 98%), a toilet seat sheet, a toilet lid, and a main body case were molded by an injection molding method to prepare a warm water-washing toilet seat.

Example 2 100% by weight of a highly crystalline polypropylene resin (65% crystallinity, 98% stereoregularity) and 10 parts by weight of ethylene propylene rubber were mixed well, and an injection molding method was used. , Toilet seat, toilet lid,
The body case was molded to prepare a warm water washing toilet seat.

Example 3 100 parts by weight of a highly crystalline polypropylene resin (crystallinity 65%, stereoregularity 98%), TBZ 0.05 part by weight, and silver zeolite 0.75 part by weight were mixed well and injected. A toilet seat sheet, a toilet seat sheet, a toilet lid, and a body case were molded by a molding method to prepare a warm water washing toilet seat.

(Comparative Example 1) A toilet seat sheet, a toilet seat sheet, a toilet lid, and a body case were molded using ABS by an injection molding method to prepare a warm water washing toilet seat.

(Comparative Example 2) ABS 100 parts by weight, TBZ
0.05 part by weight and 0.75 part by weight of silver zeolite were mixed well, and a toilet seat sheet, a toilet seat sheet, a toilet lid, and a main body case were molded by an injection molding method to prepare a warm water washing toilet seat.

(Comparative Example 3) Using a general polypropylene (crystallinity 60%), a toilet seat sheet, a toilet lid and a body case were molded by an injection molding method to prepare a warm water washed toilet seat.

The contact angle of the toilet lids molded in each of the examples and comparative examples with water was measured with a contact angle measuring device (CA-Z type) manufactured by Kyowa Interface Science. Moreover, the stain resistance of each toilet lid was confirmed according to JIS K3370. In addition, the comparison of the stain resistance performance was performed by visual observation, and the degree of stain in Comparative Example 1 was set as (Δ), and when it was worse (x) and when it was better (◯), relative evaluation was performed. The results are shown in (Table 1).

[0030]

[Table 1]

Next, the toilet lids molded in Examples 1 to 3 and Comparative Examples 1 to 3 were tested for antibacterial performance and mold resistance. Cut 50 x 50 mm sample from each toilet lid, drop 1 cc of bacterial solution (general bacteria and E. coli) on each,
The cells were cultured at 37 ° C for 24 hours. Then, the bacteria were washed out with a sterilized phosphate buffer solution. The viable cell count in the washed-out solution was measured by the pour plate method using a cell count measuring medium.
The results are shown in (Table 2).

[0032]

[Table 2]

Each sample placed on the agar medium (50 × 50 m
m) sprayed with Aspergillus niger bacterium solution,
Cultured for 7 days. The results are shown in (Table 3).

[0034]

[Table 3]

Next, the solvent resistance performance of the toilet lids molded in each of the examples and comparative examples was tested. 40 from each toilet lid
Cut out a sample of × 100mm and put 10kg in the center of each sample.
The product was immersed in a detergent (Family Fresh: trade name) for 10 days in a strained state by applying a force of weight and examined for the occurrence of solvent cracks.

The results are shown in (Table 4). X indicates cracking, ◯ indicates no change (no cracking).

[0037]

[Table 4]

At the same time, the change in bending strength was examined. The results are shown in (Table 5).

[0039]

[Table 5]

Next, the surface hardness of the toilet lid molded in each of the examples and comparative examples was measured by a rubber hardness meter (D type) based on JIS K7215. The results are shown in (Table 6).

[0041]

[Table 6]

Next, the impact strength of the toilet lid molded in Examples 1 and 2 was measured. The test was performed by the falling ball test method using a ball weighing 1 kg. Test environment 23 ℃, 0 ℃, -10 ℃
Spheres were dropped at 10 cm intervals from 10 cm to 100 cm in the three environments, and the height at which cracks occurred was evaluated. The results are shown in (Table 7).

[0043]

[Table 7]

Although the molded articles of the above Examples and Comparative Examples were toilet lids, similar results can be obtained with a toilet seat or body case.

[0045]

As described above, according to the warm water washing toilet seat of the present invention, the following effects can be obtained.

(1) By using a highly crystalline polypropylene resin for at least a part of the toilet seat sheet, the toilet lid and the body case, the chemical resistance is improved and solvent cracks are not generated even when a strong cleaning agent is used. In addition, the problem of bending strength deterioration does not occur.

Also, due to the low surface energy effect, dirt is less likely to adhere and is easy to remove, which is hygienic. Also, the surface hardness is large and scratches are unlikely to occur.

(2) By using a resin resistance consisting of a highly crystalline polypropylene resin and an elastic material component, impact resistance is improved and a better warm water washing toilet seat can be prepared.

(3) Since the antibacterial agent is non-uniformly dispersed in the highly crystalline polypropylene resin (dispersed in a higher concentration on the surface of the resin molding), the antibacterial and antifungal effects more effective than ABS are obtained. As expected, it prevents the propagation of various bacteria and mold, and the user can always get a hygienic feeling, and at the same time, prevent the infection of diseases.

[Brief description of drawings]

FIG. 1 is an external view of a warm water washing toilet seat showing an embodiment of the present invention.

[Figure 2] External view of conventional use

[Explanation of symbols] 1 toilet seat 2 cleaning nozzle 3 main body case 4 operation unit 5 cleaning switch 6 toilet 7 toilet cover

Claims (6)

[Claims] 1. A warm water washing toilet seat in which at least one member of the constituent materials of the toilet seat sheet, the toilet lid and the main body case is formed of a highly crystalline polypropylene resin. 2. A warm water washing toilet seat in which at least one member of constituent materials of a toilet seat sheet, a toilet lid and a main body case is formed of a resin body composed of a highly crystalline polypropylene resin and an elastic body component. 3. The hot water washing toilet seat according to claim 1, wherein the highly crystalline polypropylene resin has a stereoregularity of 98% or more. 4. The warm water washing toilet seat according to claim 2, wherein the elastic component is made of at least one of polyethylene resin and ethylene-propylene rubber. 5. The warm water washing toilet seat according to claim 1, wherein an antibacterial agent is dispersed in at least one of the constituent members of the toilet seat sheet, the toilet lid and the main body case. 6. The warm water washing toilet seat according to claim 5, wherein the antibacterial agent comprises at least one inorganic antibacterial agent and at least one organic antibacterial agent.