JP2001029248A - Stainproof sink - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent the tap attaching face of a sink from fur staining by depositing and sticking of minor components in water by chemically binding a stainproofing agent film at least on the tap attaching face of the rear part of a sink, which is alternately and repeatedly wetted and dried, to shield hydroxy groups on the surface. SOLUTION: A glaze film containing an antibacterial agent is formed on the surface of the ground 32 on the whole sink 10. A water repellent agent 36 film is formed as a stainproofing agent on the surface of the glaze 34 in the tap attaching face 16 and the back guard part 18. The water repellent agent 36 has fluorocarbon groups at ends and chemical reactive groups with chemical reactivity to hydroxy groups on the surface of a porcelain of the sink 10 on the opposite ends. The water repellent agent 36 is applied on the surface of the sink 10 and reacts to and chemically combined with hydroxy groups on the surface to form a film of the water repellent agent 36 on the surface. Hydoxy groups on the surface on the film forming part of the sink 10 surface is brought into a shielding condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a basin and, more particularly, to a basin characterized by an antifouling treatment.

[0002]

2. Description of the Related Art It is desirable from a sanitary viewpoint that a wash basin as a plumbing sanitary device is always kept clean. Therefore, it is conceivable that the entire basin is subjected to an antifouling treatment, for example, a coating treatment with a water repellent.

However, in the case of a wash basin as a ceramic product, if a water repellent is applied to the entire wash basin, sufficient antifouling cannot be achieved for the following reasons. In the case of a basin, the inside of the bowl of the basin is not only flushed with water from a faucet, but also leftovers of coffee, residual juice of cup noodles, ink and other various liquids may be flushed, or lipstick and other various This is a part that can easily adhere to the surface due to direct adhesion of oil. If a water repellent is applied to such an inner surface of the pot, the inner surface of the pot may easily become dirty.

On the other hand, on the faucet mounting surface at the rear of the pot, such oil stains do not occur much, but rather, water stains tend to be generated on the same portion. The generation and fixation of the water stain is considered to be performed by the following mechanism.

[0005] The faucet mounting surface is a portion where splash water from a faucet or splash water from a bowl is easily applied, and is a portion where water wet and dry are repeated. This water contains silicon, calcium,
When components such as iron are contained in trace amounts, and the faucet mounting surface repeatedly wets and dries as described above, the trace components adhere to the faucet mounting surface, and in the process of repeating wet and dry, the water is removed. A chemical reaction with a hydroxyl group on the surface of the faucet attachment surface is caused to gradually deposit and deposit on the faucet attachment surface, thereby generating so-called dirt.

This scale stain is irreversibly fixed to the faucet mounting surface by a chemical reaction, and is a stubborn stain that cannot be easily washed off by ordinary cleaning work. Iron content may be taken into the water stain, and a noticeable yellowish stain is generated on the faucet mounting surface due to the iron content and the like.

FIG. 3 schematically shows the mechanism of generation and fixation of the dirt. FIG. 3 (I) shows a state in which a trace component in water which is the base of the dirt adheres to the ceramic surface. I
I) shows the state in which the attached trace components are precipitated and fixed by causing a chemical reaction with the hydroxyl groups on the ceramic surface.

[0008] This scale is easily generated particularly at the periphery of the faucet, and this part is difficult to clean, and it is difficult to remove the generated stain by cleaning. In addition, the faucet mounting surface is conspicuous, and is the most worrisome part. If the part is dirty, it is easy to give an impression that the entire basin is dirty.

[0009] On the other hand, with respect to the overflow edge at the peripheral edge and the upper end edge of the pot, water stain is more likely to occur due to the adhesion of water droplets, rather than oil stain as in the inner surface of the pot. In addition, the front surface of the basin has a small amount of water adhered thereto, and therefore, the same portion is a portion which does not generate much water stains and oil stains and is easy to clean.

[0010] As described above, in the case of a basin as a ceramic product, the type of dirt and the dirt mechanism are different in each part, and therefore, even if an antifouling agent such as a water repellent is uniformly applied. A sufficient antifouling function cannot be imparted to the entire basin.

[0011]

SUMMARY OF THE INVENTION The invention of the present application has been made to solve such problems. In the basin according to the first aspect of the present invention, an antifouling agent which reacts with the hydroxyl groups on the surface to form a chemical bond is applied to at least the faucet mounting surface at the rear of the pot in the ceramic basin having a hydroxyl group on the surface. It is characterized in that a film of an antifouling agent is formed on the faucet mounting surface by treatment to shield the hydroxyl group.

According to a second aspect of the present invention, in the basin according to the first aspect, the entire surface of the inner surface of the bowl except for at least the periphery of a drainage device attached to the bottom is not coated with an antifouling agent. There is a feature.

A basin according to a third aspect of the present invention is the basin according to any one of the first and second aspects, wherein the antifouling agent is a water repellent which forms a film by reacting with the hydroxyl groups to form a chemical bond. Features.

A basin according to a fourth aspect of the present invention is the basin according to any one of the first to third aspects, wherein the antifouling agent is applied to the overflow edge of the peripheral edge and the upper edge of the bowl. Features.

A basin according to a fifth aspect of the present invention is the basin according to any one of the first to fourth aspects, wherein an antifouling agent is applied to an inner surface of the bowl and a periphery of the drainage device. It is characterized by.

[0016]

As described above, the basin according to the first aspect of the present invention shields hydroxyl groups on the surface by chemically bonding a film of an antifouling agent to a faucet mounting surface at the rear of the pot where water immersion and drying are repeated at least. In the case of this wash basin, it is possible to effectively prevent water stains on the faucet mounting surface due to precipitation and fixation of trace components in the water, which were conventionally generated by repetition of water wetting and drying. it can. Since the hydroxyl groups on the faucet mounting surface are shielded by the antifouling agent that has formed a film by chemically bonding to the hydroxyl groups, trace components in the water cannot chemically react with the hydroxyl groups on the faucet mounting surface. Precipitation and deposition are prevented.

Here, the antifouling agent means a substance which forms a film by reacting with a hydroxyl group on the surface of a wash basin and does not include an antibacterial agent having no reactivity with the hydroxyl group. is there.

According to the present invention, the faucet mounting surface, which is the most conspicuous part and the part where the dirt is anxious, can be effectively prevented from being stained. Can be emphasized.

On the other hand, the inner surface of the pot is a portion where the stain caused by oil stain is more conspicuous than the scale stain, and therefore, an antifouling agent can be left uncoated on the same portion (claim 2). In this way, it is possible to avoid an increase in cost due to useless use of the antifouling agent, and it is possible to avoid a problem that the application of the antifouling agent makes it easier to generate dirt.

In the present invention, a water repellent which reacts with a hydroxyl group to form a film by reacting with a hydroxyl group can be used as an antifouling agent (claim 3). If such a water repellent is used as an antifouling agent, its water repellent effect can effectively prevent the formation of a water film on the faucet mounting surface that repeats water wetting and drying,
Together with the shielding effect of the hydroxyl groups on the surface by the water repellent itself, it is possible to effectively prevent the contamination due to the precipitation of trace components in the water due to the formation and drying of the water film. In addition, since the water repellent film is firmly fixed to the faucet mounting surface by chemical bonding, the water repellent film is not peeled off from the surface for a long period of time, so that there is an advantage that the durability life is long.

In the present invention, an antifouling agent can be applied to the overflowing edge of the peripheral edge and the upper edge of the pot (claim 4). By doing so, it is possible to satisfactorily prevent water stains, which are the main stains at the overflow edge, and even if stains adhere, they can be easily removed by wiping with a rag.

In the present invention, an antifouling agent can be applied to at least the periphery of the drainage device on the inner surface of the pot (claim 5). As described above, on the inner surface of the pot, oil stains are more conspicuous than water stains. However, on the periphery of the drainage device, the water stain is rather conspicuous. This is because water droplets easily adhere to the periphery of the drainage device, and due to the adhesion and drying of the water droplets, an annular scale is easily formed on the periphery of the drainage device. Therefore, by applying an antifouling agent such as a water repellent to the same portion according to claim 5, such water stain can be favorably prevented.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 10 denotes a ceramic basin, and reference numeral 12 denotes a lower base cabinet. The basin 10 includes a bowl 14 and a substantially horizontal faucet mounting surface 1 at a rear portion thereof.
6 and a back guard 18 standing upright from the faucet mounting surface 16.
A faucet 24 having a handle 0 and a handle 22 is attached. It is desirable that the faucet mounting surface 16 be inclined slightly downward toward the bowl 14. In this example,
The entire rear portion of the pot 14 forms the faucet mounting surface 16 over the entire width in the left and right directions (except for the back guard portion 18).

In FIG. 1A, reference numeral 26 denotes a peripheral edge and an overflow edge at the upper end of the bowl 14, and in FIG. 1B, reference numeral 28 denotes a vertical surface of the basin 10. FIG.
In (C), reference numeral 30 denotes a drainage device for discharging water from the pot 14.

In this embodiment, a film of glaze 34 containing an antibacterial agent is formed on the surface of the base 32 over the entire basin 10, and further, the faucet mounting surface 16 and the back guard portion 1 are formed.
In 8, a film of a water repellent 36 as an antifouling agent is formed on the surface of the film of the glaze 34. Note that a film of a water repellent 36 is formed on the upper end surface of the back guard portion 18 and the inner wall surface on the pot 14 side.

In this embodiment, a film of the water repellent 36 is also formed on the overflowing edge 26 on the peripheral edge of the pot 14. On the other hand, a film of the water repellent 36 is not formed on the inner surface of the bowl 14, and the surface is formed by the film of the glaze 34. However, a film of the water repellent 36 is formed partially on the peripheral edge 38 (FIG. 1C) of the drainage device 30.

On the back of the basin 10, neither the film of the glaze 34 nor the film of the water repellent 36 is formed. In addition, on the vertical surface 28 and both left and right sides of the basin 10,
Only the glaze 34 film is formed on the surface, and the water repellent 36 film is not formed.

In this embodiment, the water-repellent agent 36 has a fluorocarbon group (-CF group) at the end, and a hydroxyl group on the ceramic surface of the wash basin 10 (the glaze 34 in this example) at the opposite end. A compound having a chemically reactive group having a chemical reactivity with (a hydroxyl group on the layer surface), for example, a -SiOH group, a -SiCl group, or the like is used.

The water repellent 36 is applied to the surface of the basin 10 to react with hydroxyl groups on the surface and chemically bond to form a film of the water repellent 36 on the surface. By the formation of the film of the water repellent 36, the hydroxyl groups on the surface of the washbasin 10 are shielded at the portion where the film of the water repellent 36 is formed. Further, the film of the water repellent 36 is firmly fixed to the surface of the basin 10 based on the chemical reaction.

As such a water repellent 36, a perfluoroalkyl group-containing organosilicon compound shown in the following (A)

Embedded image And a hydrolyzable group-containing methylpolysiloxane compound represented by the following (b):

Embedded image A mixed with water and a hydrophilic solvent and co-hydrolyzed, and an organopolysiloxane compound shown in (c) below

Embedded image And a solution B obtained by mixing a strong acid and a solution B.

The water repellent 36 is disclosed in Japanese Patent Application Laid-Open No. 8-20911.
8 and a detailed description thereof will be omitted.
Of course, in the present invention, other water repellents having chemical reactivity with the hydroxyl groups on the ceramic surface can be used.

In the case of the basin 10 of the present embodiment, the faucet mounting surface 16 which is the most conspicuous part and the part where
Since a film of the water repellent agent 36 is formed on the surface of the back guard portion 18 as shown in the schematic diagram of FIG. 2, the faucet mounting surface 16 and the back guard portion 18 which repeat water wetting and drying are repeated. Water stains due to precipitation and fixation of trace components in water on the surface can be effectively prevented.

The film of the water repellent 36 reacts with the hydroxyl group on the surface of the faucet mounting surface 16 and the back guard portion 18 and is fixed to the same surface.
Since the hydroxyl groups on the surface of the back guard portion 6 and the back guard portion 18 are shielded, the reaction between the hydroxyl groups and trace components in the water is prevented, so that no scale stain is generated.

In this embodiment, since the water repellent 36 is used as the antifouling agent, the water faucet mounting surface 1
6 and the back guard portion 18 can be prevented from adhering to water, the faucet mounting surface 16 and the surface of the back guard portion 18 can always be kept dry, and the film of the water repellent 36 is chemically bonded. Since it is fixed to the surface of the washbasin 10, it has high durability.

On the other hand, in the present embodiment, the water repellent 36 is not applied to the inner surface of the pot 14 where dirt due to oil stain is more conspicuous than water stain, so that the cost increase due to wasteful use of the water repellent 36 is avoided. In addition, it is possible to avoid the harm that the application of the water repellent agent 36 tends to generate stains on the inner surface of the pot 14.

However, on the inner surface of the bowl 14, a film of the water repellent 36 is formed on the peripheral edge 38 of the drainage device 30, which is exceptionally liable to generate water stains. The water repellent 36
Satisfactorily can be prevented.

The periphery 38 of the drainage device 30 in the inner surface of the bowl 14
Is a portion where water droplets are apt to remain, and while the water droplets adhere and dry, ring-shaped water stains easily occur on the peripheral edge 38 of the drainage device 30, but according to the present example, this can be effectively prevented.

In the present embodiment, a film of the water repellent 36 is formed also on the overflowing edge 26 at the peripheral edge and the upper end edge of the bowl 14. The main stain is also water stain at the overflow edge 26. Therefore, according to this embodiment, the water repellent 36 is applied to the overflow edge 26.
The formation and fixation of scale stains on the same portion can be prevented by forming the film.

The embodiment of the present invention has been described in detail above, but this is merely an example. For example, in the above embodiment, the water repellent 36 is also applied to the back guard portion 18,
In some cases, the water repellent 36
Can be left uncoated, or conversely, in the above embodiment, the water repellent 36 is not applied to the anterior surface 28 and the left and right side surfaces, but the water repellent 36 is also applied to these portions. It is also possible to process it.

Further, the basin illustrated above is merely an example, and the present invention can be applied to other various types of basins, and various modifications may be made without departing from the gist of the invention. It can be configured in different forms.

[Brief description of the drawings]

FIG. 1 is a view showing a basin according to an embodiment of the present invention.

FIG. 2 is a view schematically showing the operation of the basin in FIG. 1;

FIG. 3 is a diagram schematically illustrating a mechanism of generation of dirt that has occurred in a conventional wash basin.

[Explanation of symbols]

 Reference Signs List 10 wash basin 14 pot 16 faucet mounting surface 26 overflow edge 30 drainage device 36 water repellent 38 peripheral edge

Claims (5)

[Claims] 1. A water basin as a ceramics product having a hydroxyl group on its surface, wherein at least a faucet mounting surface at the rear of the bowl is coated with an antifouling agent which reacts with a hydroxyl group on the surface to form a chemical bond. A basin made by antifouling treatment, wherein a film of an antifouling agent is formed on the mounting surface to shield the hydroxyl groups. 2. The basin according to claim 1, wherein at least the entire surface of the inner surface of the bowl except for the periphery of a drainage device attached to the bottom is not coated with an antifouling agent. Washbasin made by antifouling treatment. 3. The basin according to claim 1, wherein the antifouling agent is a water repellent which reacts with the hydroxyl groups to form a film by chemical bonding. Washbasin consisting of 4. The basin according to claim 1, wherein the antifouling agent is also applied to an overflowing edge of a peripheral edge and an upper edge of the bowl. Washbasin consisting of 5. The basin according to claim 1, wherein an antifouling agent is applied to an inner surface of the bowl and a periphery of the drainage device. Washbasin consisting of treatment.