JP2008239354A - Artificial stone and product using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an artificial stone excellent in antibacterial and deodorization activities as well as in far-infrared radiation property, and a slate tile, a bedrock bath apparatus, a seat unit, a building material, a coating material, etc., using the same. <P>SOLUTION: The artificial stone having a density of 2-2.5 g/cm<SP>3</SP>is obtained by pressing a composition prepared by blending and mixing 95-50 mass% of mortar containing slaked lime as a main solidifying material with 5-50 mass% of powder of a natural stone having far-infrared radiation property. The slate tile is formed of this artificial stone. The bedrock bath apparatus is configured by using this slate tile at a bedrock surface part on which the body is laid and further attaching a warming device. The seat unit is configured by using this slate tile 8 at a seat surface part on which buttocks are put and further attaching a warming device. The building material such as a flooring material or a wall material is configured using the artificial stone. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an artificial stone that radiates far-infrared rays and a product (stone stone tile, bedrock bath device, seating device, building material, coating material, etc.) using the artificial stone.

Bedrock baths that have a thermal effect by forming a bedrock for bedrock using natural stone that emits far-infrared light when warmed and laying the body on the bedrock that has been warmed have become widespread. Various natural stones are used in various forms in this bedrock.
Patent Document 1 describes a bedrock made of amphibole flat plate.
Patent Document 2 describes a bedrock bath device including a water-permeable concrete layer formed by mixing and solidifying hornfels powder in cement or the like, and a hornfels single plate disposed on the upper surface thereof.
Patent Document 3 describes a bedrock comprising a mixture of mortar and tourmaline powder and azuki bean-sized tourmaline stone, and tiles containing tourmaline and tourmaline stone are embedded in the mortar.
JP 2006-288713 A JP 2005-329046 A JP 2004-130047 A

  However, although the conventional bedrock is excellent in the far-infrared radiation, there is a problem that bacteria may propagate and odors may be generated.

  Therefore, an object of the present invention is to provide an artificial stone excellent in not only far-infrared radiation but also antibacterial and deodorizing properties, and an article using the artificial stone.

In order to solve the above problems, the present invention adopts the following means (1) to (8).
(1) An artificial stone obtained by pressure-molding a composition in which slaked lime as a main solidifying material and a natural stone powder having far-infrared radiation (a property of emitting far-infrared radiation when heated) are mixed.
This composition is preferably one in which 2 to 20 parts by mass of natural stone powder is blended with 100 parts by mass of slaked lime. If the blend of the natural stone powder is less than 2 parts by mass, the far-infrared radiation tends to be weak, and if it is 20 parts by mass or more, the binding force of the artificial stone tends to be weak and the cost tends to be high.

(2) An artificial stone formed by pressure molding a composition in which stucco containing slaked lime as a main solidifying material and a natural stone powder having far-infrared radiation are mixed.
This composition is preferably one in which 5-50 mass% of natural stone powder is blended in a weight ratio in the composition. If the blend of the natural stone powder is less than 5% by mass, the far-infrared radiation tends to be weak, and if it is 50% by mass or more, the binding force as an artificial stone tends to be weak and the cost tends to be high.

  “Stucco” is a painted wall material containing slaked lime as a main solidifying material and further containing additives such as fibers and adhesives (including adhesives). It is preferable that the content rate of slaked lime is 30 mass% or more (by the weight ratio in plaster). Although it does not specifically limit as a fiber, A hemp, bamboo, etc. can be illustrated. Although it does not specifically limit as an adhesive agent, Seaweed paste (funari), herbaceous paste, such as Ginkgo grass, Tatsumato, etc. can be illustrated.

  In the above (1) and (2), the natural stone having far-infrared radiation is not particularly limited, but examples include amphibolite, tourmaline stone, amaterite, and barley stone. Amphibole is particularly preferable in terms of far-infrared radiation, availability, price, and the like.

Examples of the pressure molding include high pressure vacuum molding in which the above composition (powder) is filled in a mold, and the composition is pressed at a high pressure while evacuating the inside of the mold to reduce the pressure. The pressure of the press is preferably 100 N / mm ² or more. This is because the artificial stone is densified and excellent strength can be obtained.

Moreover, it is preferable that the density of the artificial stone is 2 g / cm ³ or more as a result of the pressure molding. This is because the artificial stone is densified and excellent strength can be obtained. The density varies depending on the blending amount of natural stone powder, but it is preferably 2 to 2.5 g / cm ³ (particularly 2 to 2.3 g / cm ³ ). The shape of the artificial stone is not particularly limited, and examples thereof include a plate shape, a rod shape, a tubular shape, and a three-dimensional shape adapted to the function, but it is the plate shape that is most easily pressure-molded.

  Moreover, it is preferable to add a coloring agent as another additive to a composition. Even if the blending amount of the natural stone powder is small, an artificial stone having a color equivalent to that of natural stone can be obtained by adding a colorant having the same color as that of the natural stone.

(3) Stone tile made of the artificial stone according to the above (1), (2) or the above aspect.
In this case, the artificial stone is obtained by pressure-molding the composition into a tile shape (plate piece shape).

(4) A bedrock bath apparatus using the stone tile of (3) above as a board surface part for laying down the body and provided with a heating device for heating the stone tile.

(5) A seating device using the stone tile of (3) above as a seating surface portion on which a buttock is placed, and a heating device for heating the stone tile.

(6) The building material using the artificial stone of said (1) (2) or those said aspects.
Examples of building materials include floor materials and wall materials. In this case, the entire building material may be made of artificial stone, or a part of the building material may be formed using artificial stone. The stone tile of (3) above may be used as a building material. With this building material using artificial stone, indoor deodorizing effect and antibacterial effect can be obtained. Therefore, although the heating apparatus which heats artificial stone does not need to be arranged in parallel, when calculating | requiring the heating effect by a far infrared ray, the heating apparatus which heats artificial stone is arranged in parallel. In addition, since the building material using artificial stone contains slaked lime, a moisture conditioning effect due to moisture absorption and desorption and a VOC (volatile organic compound) adsorption effect are also obtained.

(7) A coating material in which plaster containing slaked lime as a main solidifying material and natural stone powder having far-infrared radiation are mixed as main components.
The surface to be coated using this coating material is not particularly limited, and examples thereof include a wall surface and a ceiling surface of a building. With this building material using artificial stone, for example, an indoor deodorizing effect, antibacterial effect, humidity control effect, and VOC adsorption effect can be obtained.
This coating material is preferably one in which 5-50 mass% of natural stone powder is blended in a weight ratio in the composition. If the blend of the natural stone powder is less than 5% by mass, the far-infrared radiation tends to be weak, and if it is 50% by mass or more, the binding force as an artificial stone tends to be weak and the cost tends to be high. Regarding “stucco” and “natural stone”, the explanations given in (1) and (2) above can be used.

(8) A coating method in which an adhesive and a solution are added to the coating material of (7) and mixed, and the mixed liquid (viscous material) is coated on the surface to be coated.
By this coating method, the coating material can be easily coated when necessary.

The artificial stones of (1) and (2) can be used not only for the stone tiles of (3) and the building materials of (6), but also for various uses as follows.
(A) Health equipment related For example, plate-shaped artificial stone is used as a heat plate for foot warmers, heating panels, digging goats, table-type kotatsu, etc. in addition to the above-mentioned bedrock bath. In this case, a heating device for heating the artificial stone is installed side by side.
(B) Housing-related For example, plate-shaped artificial stone is used as a floor plate for partial floor heating. In this case, a heating device for heating the artificial stone is installed side by side. Especially in places where the need for deodorization and antibacterial is high, for example, partial floor heating to be installed in toilets, kitchens, etc. Suitable for flooring for heating.
(C) Food-related For example, plate-like or three-dimensional shaped artificial stones, parts of food production line machinery and equipment that require antibacterials, part of storage, containers such as trays and packs for food Use for. In this case, there may be no heating device for heating the artificial stone.
(D) Medical use For example, a plate-like or three-dimensional artificial stone is used for a storage device for surgical tools that require antibacterials, a package for storing specimens, a container such as a sample dish, or the like. In this case, there may be no heating device for heating the artificial stone.
(E) Others For example, plate-shaped or three-dimensional shaped artificial stones should be used for flower beds, deodorant goods (carriage items), antibacterial goods, cases of repellents such as cockroaches and rats. In this case, there may be no heating device for heating the artificial stone.

[Action]
Slaked lime as the main solidifying material works as a solidifying material, has good moldability when pressed and forms a high-strength artificial stone.
Natural stones in artificial stones emit far-infrared rays when warmed. Amphibole in particular has a high far-infrared radiation.
Slaked lime (calcium hydroxide) in artificial stone continues to absorb carbon dioxide in the air for many years and gradually undergoes a carbonation reaction to become calcium carbonate, which increases the strength. During this time, slaked lime is strongly alkaline (high PH) due to hydroxide ions, controls microorganisms that are the source of malodors, and suppresses bacterial growth and mold generation. Slaked lime adsorbs odorous substances such as formaldehyde and chemically decomposes them into harmless substances. In order to promote the carbonation reaction and increase the initial strength, artificial stone may be cured in carbon dioxide gas.

  The artificial stone, stone tile, bedrock bath device, seating device, building material or coating material of the present invention is not only far infrared radiation, but also excellent in antibacterial and deodorizing properties, and has good moldability and excellent strength. There is an excellent effect that it can be provided at low cost.

Density of 2 is obtained by press-molding a composition in which 95 to 50% by mass of plaster containing slaked lime as a main solidifying material and 5 to 50% by mass of natural stone powder having far-infrared radiation are mixed and mixed. An artificial stone of ˜2.5 g / cm ³ . The natural stone is preferably amphibole. A rock bath apparatus and a seating apparatus including a stone tile using the artificial stone and a heating device for heating the stone tile can be configured. In addition, building materials such as floor materials and wall materials using artificial stone can be configured.

[Artificial stone]
First, a composition in which 90% by mass of plaster and 10% by mass of amphibole powder were blended and mixed was subjected to high-pressure vacuum forming to form a square plate shape having a thickness of 100 mm and a thickness of 10 mm, and a density of about 2. An artificial stone of 2 g / cm ³ was obtained (Example 1). In addition, a composition in which 80% by mass of plaster and 20% by mass of amphibole powder were mixed and mixed was similarly subjected to high-pressure vacuum forming to obtain an artificial stone having the same dimensions and substantially the same density (Example) 2).

In any of the examples, the used plaster is a mixture of slaked lime as a main solidifying material, hemp as a fiber, and seaweed paste as an adhesive. In high-pressure vacuum forming, the above composition (powder) is filled in a mold, and the composition is pressed at a high pressure (about 200 N / mm ² ) while evacuating the inside of the mold to reduce the pressure. went.

With respect to these Examples 1 and 2 and the mere polyethylene film as Comparative Example 1, JIS Z 2801: 2000 “Antimicrobial Processed Product—Antimicrobial Effect” 5.2 Antibacterial activity test was conducted with reference to test methods for plastic products and the like. went. The following 4 types of test bacteria were used, but Example 2 was performed only for Salmonella.
1. Escherichia coli ATCC 11775 (Escherichia coli)
2. Staphylococcus aureus ATCC 6538P (Staphylococcus aureus)
3. Salmonella enteritidis L-58 (Salmonella)
4). Legionella pneumophila (Legionella, field isolate)

Each surface of Examples 1 and 2 and Comparative Example 1 was inoculated with a bacterial solution, and the amount of the bacterial solution inoculated was 0.1 ml with respect to an area of 400 mm ² . This antibacterial activity test was performed three times for each test bacteria, and in each round, the number of viable bacteria immediately after inoculation and the number of viable bacteria after being kept at 35 ° C. for 24 hours were measured. The test results are shown in Table 1 below.

As is apparent from Table 1, in the polyethylene film of Comparative Example 1, Escherichia coli, Staphylococcus aureus, and Salmonella increased significantly several times to several tens of times after the passage of time, and Legionella decreased slightly.
In contrast, in Example 1, Escherichia coli, Staphylococcus aureus, Salmonella and Legionella significantly decreased to less than one hundredth after the time had elapsed. Also in Example 2, Salmonella was significantly reduced to one-hundredth or less after the lapse of time. By "less than 10 ^2" in the table indicates that the viable cell count is below the detectable lower limit. Thus, the antibacterial activity of Examples 1 and 2 was clarified.

Furthermore, in addition to the polyethylene film of Comparative Example 1, only pottery water as Comparative Example 2 and a dish prepared by cutting out amphibole as Comparative Example 3 were subjected to antibacterial activity tests with reference to the same JIS test method. went. However, the following three types of test bacteria were used.
1. Escherichia coli IFO 3972 (E. coli)
2. Staphylococcus aureus subsp. aureus IFO12732 (Staphylococcus aureus)
3. Salmonella enteritidis NBRC3313 (Salmonella)

The bacterial solution was inoculated on each surface of Comparative Examples 1 to 3, and the amount of the bacterial solution inoculated was 0.1 ml with respect to an area of 400 mm ² . This antibacterial activity test is performed 3 times for each test bacteria (only 2 times for Comparative Example 2), and in each time, the number of live bacteria immediately after inoculation and the number of live bacteria after being kept at 35 ° C. for 24 hours are measured. did. The test results are shown in Table 2 below.

As is clear from Table 2, in the polyethylene film of Comparative Example 1, as in the above test results, Escherichia coli, Staphylococcus aureus, and Salmonella increased significantly after the time elapsed.
In the pottery water only of Comparative Example 2, Escherichia coli and Salmonella increased significantly and S. aureus increased slightly after the time had elapsed.
In the amphibole dish of Comparative Example 3, Escherichia coli, Staphylococcus aureus, and Salmonella increased greatly after the time had elapsed. This amphibole emits far-infrared rays and is blended as a powder in Examples 1 and 2, but no antibacterial activity was observed in Comparative Example 3 which was cut out and used.

[Application Example 1]
Next, as shown in FIG. 1 and FIG. 2, the stone bed apparatus 1 is manufactured by using the stone stone tile made of the above-mentioned artificial stone as a board surface portion where the body lays down and providing a heating device for heating the stone tile. did. The bedrock bath device 1 includes a base frame 2 made of, for example, pipe steel materials assembled in a plane rectangular frame shape, and a reinforcing material 3 made of, for example, an angle steel material is installed in the base frame 2. A heater support member 4 made of, for example, aluminum and formed into a thick plate shape is placed on the reinforcing member 3, and a heating device 5 is placed on the heater support member 4. For the heating device 5, for example, a sheet-shaped electric heater having a large area that is commercially available for melting snow on the road is used. The upper surface of the heating device 5 is substantially the same as the upper surface of the base frame 2.

  On the base frame 2, a flat rectangular frame-shaped surrounding frame 6 made of, for example, a steel material is attached, and a heat conducting plate 7 is placed so as to fit inside the surrounding frame 6. The heat conducting plate 7 is formed in a thick plate shape that is slightly larger than the inner method of the base frame 2 with, for example, aluminum having good thermal conductivity, and the heating device 5 is in contact with the lower surface of the heat conducting plate 7. A plurality of stone tiles 8 are placed in close proximity to each other on the heat conduction plate 7 and placed on the surface of the board where the body lies, and are adhered with an adhesive 11. Has been. As the adhesive 11, a conductive adhesive having good thermal conductivity is used, and its layer thickness is, for example, 0.5 to 1.0 mm.

The stone tile 8 is a composition in which 90 to 80% by mass of plaster, 10 to 20% by mass of amphibole powder, and a small amount of colorant are mixed and mixed as in the artificial stones of Examples 1 and 2 above. Is formed into a tile shape by high-pressure vacuum forming. The stone tile 8 is formed in a square plate shape of 350 to 450 mm square and 12 to 30 mm thick, and is placed on the central portion in the width direction of the board surface portion, and is 25 to 170 mm wide and 380 to 420 mm long. What was formed in the rectangular plate shape of 15-25 mm in length is mounted in the width direction edge part of a board | substrate surface site | part. The density of the stone tile 8 is about 2.2 g / cm ³ . Since the amphibole used was green, the same green as amphibole was used as the colorant.

  Under the base frame 2, a heat insulating material 9 formed in the shape of a thick plate having the same size as the inner method of the base frame 2 is disposed, and a support made of, for example, angle steel attached to the base frame 2 It is supported by the member 10. As the heat insulating material 9, for example, a resin foam (polystyrene foam, urethane foam, etc.) formed to a thickness of 25 to 35 mm is used.

  As described above, the bedrock bath device 1 of this application example is a unit in which the stone frame tile 8, the heating device 5, the heat insulating material 9 and the like are integrated with the base frame 2, and is lightweight and compact. . The overall size of the bedrock bath device 1 is, for example, a width of 600 to 750 mm, a length of 1800 to 2100 mm, and a height of about 80 to 100 mm, and the size of the bed surface part is a width of 500 to 690 mm and a length of 1700 to 2040 mm. . For reference, when the actual measurement example of the bedrock bath device 1 of this application example is given, the temperature on the stone tile 8 is set to 50 ° C. under the conditions of power consumption of the heating device 5: single phase 200V 800 WMax, ambient temperature 25 ° C. The temperature raising time until it was raised was 75 minutes.

[Application 2]
Next, as shown in FIG. 3, a stone device tile made of the above-mentioned artificial stone was used as a seating surface portion on which the heel portion was placed, and a seat device 21 provided with a heating device for heating the stone stone tile was manufactured. The seat device 21 includes a base frame 22 made of, for example, timber assembled in a substantially square frame shape, and a bottom plate 23 made of, for example, a wood board material is installed on the bottom of the base frame 22. On the bottom plate 23, a heat insulating material 29 made of, for example, resin foam is placed. On the heat insulating material 29, a heater support member 24 formed of, for example, aluminum in a thick plate shape is placed. A heating device 25 is placed on the top. The heating device 25 is a planar electric heater.

  On the step portion formed in the middle of the inner side surface of the base frame 22, for example, a heat conducting plate 27 formed in a thick plate shape with aluminum is placed, and the heating device 25 is in contact with the lower surface of the heat conducting plate 27. . A plurality of stone tiles 28 are placed close to each other so as to fit inside the base frame 22 on the seat surface portion on the heat conducting plate 27 where the buttocks are placed, It is glued. As the adhesive 31, a conductive adhesive having good thermal conductivity is used, and its layer thickness is, for example, 0.5 to 1.0 mm.

  As in the above application example 1, the stone tile 28 is formed by high-pressure vacuum forming a composition in which 90 to 80% by mass of plaster, 10 to 20% by mass of amphibole powder and a small amount of colorant are mixed and mixed. It is formed in a tile shape. Four stone tiles 28 are formed in a square plate shape of 150 to 220 mm square and 15 to 30 mm thick.

  As described above, the seating device 21 of this application example is a unit in which the stone frame tile 28, the heating device 25, the heat insulating material 29, and the like are integrated with the base frame 22, and is lightweight and compact. The overall size of the seat device 21 is, for example, about 360 to 460 mm and a height of about 50 to 100 mm. The seat device 21 is installed and used at an appropriate height such as on a chair.

According to the stone tile of the present embodiment, and the rock bath apparatus and seat apparatus using the same, the following effects can be obtained.
(1) Since a composition of plaster and amphibole powder is subjected to high-pressure vacuum forming, stone tiles of any size and shape can be easily and inexpensively produced depending on the mold.
(2) Stucco works as a solidifying material, has good moldability when compressed, and is compressed to a high density of about 2.2 g / cm ³ , so it is densified like ordinary stone and has high strength. high.
(3) Since amphibole powder is blended, far infrared rays are emitted when heated by the heating devices 5 and 25, and the entire body or buttocks are heated appropriately to improve blood flow. The far red effect can be exerted.
(4) Since the stucco containing slaked lime is blended, as described above, it suppresses the growth of bacteria and the generation of mold that become the source of malodor. And it can use hygienically only by cleaning a stone tile easily, and generation | occurrence | production of a malodor can be prevented.
(5) Since the heat conducting plates 7 and 27 are interposed between the stone tiles 8 and 28 and the heating devices 5 and 25, the entire stone stone tile can be efficiently heated uniformly. Moreover, since the thick plate-like heat conduction plates 7 and 27 also function as a support material for the stone tiles 8 and 28, the stone stone tiles can be made thin. For example, although the thickness of the bedrock of the conventional bedrock apparatus is about 30 mm, in the bedrock apparatus of the application example 1, the thickness of the stone bed tile can be set to about 12 to 20 mm.

  The use of the artificial stone of the above embodiment is not limited to the stone tile described above, and can constitute a building material such as a flooring material and a wall material. In addition, for example, described in the above [Means for Solving the Problems] It can be used for various purposes.

  In addition, this invention is not limited to the said Example, In the range which does not deviate from the meaning of invention, it can change suitably and can be actualized.

It is sectional drawing which shows the rock mass bath apparatus using the stone stone tile of the Example which concerns on this invention. (A) is the perspective view which looked at the bedrock bath apparatus from the upper direction, (b) is the perspective view which similarly looked from the downward direction. The seat apparatus using the same stone board tile is shown, (a) is a perspective view, (b) is sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bedrock bath device 2 Base frame 5 Heating device 7 Heat-conducting plate 8 Stone board tile 9 Heat insulating material 10 Supporting member 21 Seating device 22 Base frame 25 Heating device 27 Heat-conducting plate 28 Stone board tile 29 Heat-insulating material

Claims (11)

  An artificial stone formed by pressure molding a composition in which slaked lime as a main solidifying material and powder of natural stone having far-infrared radiation are mixed.   An artificial stone formed by pressure molding a composition in which stucco containing slaked lime as a main solidifying material and a natural stone powder having far-infrared radiation are mixed.   The artificial stone according to claim 2, wherein the composition contains 5 to 50 parts by mass of a natural stone powder with respect to 100 parts by mass of plaster.   The artificial stone according to any one of claims 1 to 3, wherein the natural stone is an amphibole. The artificial stone according to any one of claims 1 to 4, wherein the artificial stone has a density of 2 to 2.5 g / cm ³ .   A stone tile made of the artificial stone according to any one of claims 1 to 5.   A bedrock bath device comprising the stone tile according to claim 6 on a board surface portion on which the body is laid, and a heating device for heating the stone tile.   A seating device comprising the stone tile according to claim 6 as a seating surface portion on which a buttock is placed, and a heating device for heating the stone tile.   The building material using the artificial stone as described in any one of Claims 1-5.   A coating material in which plaster containing slaked lime as a main solidifying material and natural stone powder having far-infrared radiation are mixed as main components.   A coating method of adding an adhesive and a solution to the coating material according to claim 10 and mixing the mixture, and coating the mixed liquid material on a surface to be coated.

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