JPH08299070A - Kitchen furniture - Google Patents

Abstract

PURPOSE: To increase the sanitary property of the work-top or the sink of a piece of kitchen furniture. CONSTITUTION: Antibacterial grains coated with a hydrolysate of tetraalkoxysilane on a part of the surface of the silica gel carrying a thiosulfato silver complex are mixed with silica gel, and the surface of the molding is roughened on the work-top 3 and the resin sink 6 of a piece of kitchen furniture. When the molding surface of the work-top 3 and the resin sink 6 is roughened, the antibacterial grains are exposed, the antibacterial action by the antibacterial grains is remarkably improved, and the sanitary property is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to kitchen furniture having a resin-molded worktop or sink containing antibacterial particles.

[0002]

2. Description of the Related Art Generally, it has been used for containers, washing tubs, etc. used in bathrooms, etc. to exhibit antibacterial action by mixing antibacterial particles into resin molded products. These are obtained by kneading thermoplastic resin pellets with antimicrobial particles in advance and molding them by injection molding or the like. And the resin molded product containing particles is less likely to have particles exposed on the surface,
Most are covered with a resin skin layer.

On the other hand, materials for forming work tops and sinks of kitchen furniture are required to have heat resistance and toughness. Mainly, unsaturated polyester resin and acrylic resin filled with filler to improve heat distortion resistance are used. Are becoming more popular.

[0004]

The object of the invention is to however the kitchen furniture is at least three times a day is used, always often have TodokoBi moisture, and therefore inevitably bacteria there is a problem that is easy to breed.

Therefore, it is conceivable to mix antibacterial particles into the worktop or sink to give them antibacterial properties, but resin molded articles containing antibacterial particles rarely have their particles exposed on the surface, and most of them are made of resin. It is expected that there will be a problem that its antibacterial action is weak because it is covered with the skin layer. Moreover, when conventional antibacterial particles supported on, for example, a silver ion carrier are used, it is easily oxidized by a peroxide added to cure the resin and colored, or the antibacterial action is impaired. Is also expected.

[0006]

According to the present invention, in order to solve the above-mentioned problems, at least one of a work top and a sink of kitchen furniture is formed of a resin containing antibacterial particles. It is possible to suppress the breeding of rice and make sanitary kitchen furniture.

Further, the resin containing the antibacterial particles has a rough surface so that the antibacterial particles are exposed, so that the antibacterial effect can be sufficiently exhibited.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The kitchen furniture according to claim 1 of the present invention has a cabinet and a worktop covering the upper part of the cabinet or a worktop having a sink, and at least one of the worktop and the sink. One of them is made of resin containing antibacterial particles.

In the kitchen furniture according to claim 2, antibacterial particles are exposed on the surface of the worktop or sink.

According to a third aspect of the kitchen furniture, the worktop or sink resin is a thermosetting resin such as unsaturated polyester, and the kitchen furniture according to the fourth aspect is a worktop or sink resin. It is as an acrylic resin containing.

In the kitchen furniture according to a fifth aspect, the antibacterial particles are antibacterial particles obtained by supporting a thiosulfato silver complex on silica gel and coating at least a part of the surface thereof with a hydrolyzate of tetraalkoxysilane. is there.

The kitchen furniture of the present invention can be made into sanitary kitchen furniture by suppressing the growth of germs by the action of antibacterial particles.

In addition, the surface of the resin molded product in which the antibacterial particles are kneaded is made rough to remove the skin layer covering the surface of the resin molded product regardless of whether it is a thermoplastic resin or a thermosetting resin. By generating the outcrop of the antibacterial particles on one side, the antibacterial effect can be sufficiently exerted. That is, by causing the outcrops, the silver ions do not have to pass through the skin layer of the resin, and can exert the antibacterial action directly on the surface of the resin molded product. Further, by making the surface rough, the surface area of the resin molded product is remarkably increased, and the outcrop of the antibacterial particles is also increased accordingly, so that the antibacterial action is further enhanced.

The surface of the antibacterial particles is coated with a hydrolyzate of tetraalkoxysilane, so that the silver complex does not come into direct contact with the peroxide, which is a curing agent such as a thermosetting resin. Also, oxidation of silver due to peroxide is unlikely to occur. Since the carrier is silica gel and has high transparency, the color of the original resin is not impaired even when mixed with various resins.

[0015]

EXAMPLE An example in which the present invention is applied to a kitchen device will be described below.

In FIG. 1, reference numeral 1 is a sink of the kitchen device,
A worktop 3 is placed on the upper surface of the cabinet 2. The work top 3 is lined with a wood plywood lining material 4, and the work top 3 is further provided with a sink hole 5
A resin sink 6 is fixed to the sink hole 5 from below the worktop 3. Further, a detergent container 8 having a separately formed sponge receiver 7 is fitted in the hole formed in the worktop 3 at the lateral rear side of the sink hole 5 of the worktop 3. This sink 1 is arranged with its back part in contact with the wall of the kitchen, and a resin tile 9 is attached to the wall above the worktop 3 of the sink 1.

The work top 3 is press-molded with unsaturated polyester which is a thermosetting resin, and is a reinforced plastic to which aluminum hydroxide and glass fiber are added. 20.5% by weight of unsaturated polyester resin, 65% by weight of aluminum hydroxide, 14% by weight of glass fiber, 0.5% of silica gel coated with a thiosulfato silver complex supported to hydrolyze tetraalkoxysilane. In weight%, t- which is a peroxide
Butyl peroxy laurate is added as a reaction initiator and kneaded to prepare a forming raw material. This was filled in a press die and pressed while heating to produce a worktop molded product.

The work tops 3 obtained here are antibacterial particles containing silver. Silver is supported on silica gel as a thiosulfato silver complex, and the silica gel is further covered with a product obtained by hydrolyzing tetraalcooxysilane. Therefore, even if it is contained in the radical polymerization reaction system of unsaturated polyester by peroxide, it is stably present without being affected by radicals. It was also confirmed that, due to the transparency of silica gel, coloring and discoloration did not occur even when added to the resin, and the transparency of the work top 3 was not impaired at all.

However, when observing the press-molded product, some of the antibacterial particles are slightly exposed, as shown in FIG.
As shown in the figure, most of the antibacterial particles 12 are dispersed in the resin 11 as shown in the figure, and the skin layer 13 is formed so that the resin 11 covers the antibacterial particles 12 near the surface. Therefore, the antibacterial particles 12 could not show the outcrop on the surface of the molded article 10 and showed an antibacterial effect due to slight migration of silver ions, but it was not sufficient.

In view of this point, the present invention removes the skin layer 13 covering the antibacterial particles 12 as shown in FIG. 2 so that the outcrops 14 of the antibacterial particles 12 appear on the surface of the resin molded product 10. The antibacterial action can be sufficiently brought out. In the present invention, sandpaper is applied to remove the skin layer 13, liquid honing,
There are methods such as sandblasting, brush polishing, and belt polishing, and any method may be used. In the case of sandpaper finishing, finishes corresponding to Nos. 300 to 1200 are preferable as the surface finish of the work top 3 from the viewpoint that scratches are less noticeable. On the other hand, by making the surface of the worktop 3 rough, the skin layer 13 is removed and the antibacterial particles 1 are removed.
Since the surface of No. 2 also becomes rough and the surface area remarkably increases, the number of active sites for antibacterial action by silver ions also increases, and the antibacterial action can be more effectively exhibited.

On the other hand, the resin-made sink 6 attached to the work top 3 in FIG. 1 is cast-molded with an acrylic resin. 65% by weight of aluminum hydroxide as a filler and 1% by weight of silver thiosulfato silver complex antibacterial particles supported on silica gel were added to 34% by weight of acrylic resin, and dimethyldibutylperoxyhexane as a peroxide was added as a reaction initiator. Was molded. By using aluminum hydroxide as the filler, the heat distortion resistance and hardness of the acrylic resin can be improved, and flame retardancy can be imparted.

Since the silica gel supporting the silver thiosulfato complex added to the molded product is covered with the tetraalkoxysilane hydrolysis product as in the above-mentioned examples, it does not affect the peroxide reaction initiator for curing the acrylic resin. I didn't receive it.

In FIG. 1, the inner surface of the molded sink 9 is attached to the work top 3 as a rough surface by liquid honing. The inside of the sink 9 is always in a wet state, and it is likely that food dregs and the like will adhere to it and become a hotbed for molds and fungi, but the roughened surface provides the same antibacterial effect as the worktop 3. It is sufficiently exhibited, and the sink 9 can be kept clean and hygienic without being colored by mold or the like. Also, since it contains 65% by weight of aluminum hydroxide as a filler, it has sufficient heat resistance and heat distortion resistance even if it is a thermoplastic resin or used as a kitchen worktop or sink. The addition of antibacterial particles did not affect the characteristics of the particles.

[0024]

The kitchen furniture of the present invention has the following effects, as is clear from the description of the above embodiment.

(1) The function of the antibacterial particles suppresses the growth of germs and makes it possible to provide sanitary kitchen furniture.

(2) Since many outcrops of antibacterial particles appear on the surface of the molded product, the antibacterial action can be remarkably increased.

(3) Since the surface of silica gel which is a carrier is coated with a hydrolysis product of tetraalkoxysilane, it can be used as a peroxide for various resins, especially thermosetting resins. On the other hand, it is difficult to undergo a reaction and is stable, and no phenomenon such as coloring or a loss of transparency due to the curing reaction is observed, and the antibacterial action can be stably exhibited.

(4) It is possible to prevent the influence of the addition of the antibacterial material on the heat resistance, heat distortion resistance, discoloration resistance and other properties required for the work top and sink of the kitchen furniture.

[Brief description of drawings]

FIG. 1 is a partial sectional view showing a kitchen furniture according to an embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view of a resin molded product having a roughened surface.

FIG. 3 is a partially enlarged cross-sectional view of the resin molded product as it is.

[Explanation of symbols]

 1 Sink 2 Cabinet 3 Worktop 5 Sink hole 6 Sink 10 Molded product 11 Resin 12 Antibacterial particles 13 Skin layer 14 Outcrop

Claims (5)

[Claims] 1. A kitchen furniture comprising a cabinet, a worktop covering the upper part of the cabinet, or a worktop provided with a sink, wherein at least one of the worktop and the sink is made of a resin containing antibacterial particles. 2. The kitchen furniture according to claim 1, wherein antibacterial particles are exposed on the surface of the worktop or the sink. 3. The worktop or sink resin is
A thermosetting resin such as unsaturated polyester.
Or the kitchen furniture described in 2. 4. The worktop or sink resin is
The kitchen furniture according to claim 1 or 2, which is an acrylic resin containing a filler. 5. The antibacterial particle is an antibacterial particle obtained by supporting a silver thiosulfato silver complex on silica gel and coating at least a part of the surface thereof with a hydrolyzate of tetraalkoxysilane. Kitchen furniture according to item 1.