JP2873196B2 - Wood block having far-infrared radiation properties, antibacterial property, deodorizing property, fungicidal property and insect repellent property, and processing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antibacterial agent which is inserted into bath water for the purpose of antibacterial action, is left in a passenger car for the purpose of deodorizing, has a fungicidal effect and is an insect repellent against sanitary pests such as fleas and mites. It has a far-infrared radiation characteristic that can be left in a case or closet for the purpose of action, or it can be placed in an elevated water tank for the purpose of preventing the occurrence of blue-green algae. The present invention relates to a wood block having mold and insect repellency and a method for processing the same.

[0002]

2. Description of the Related Art Heretofore, a wood block having far-infrared radiation properties, antibacterial property, deodorizing property, antifungal property and insect repellent property, and a processing method thereof have not been known.

[0003]

DISCLOSURE OF THE INVENTION The present invention is intended to be formed into any shape such as a spherical shape, a polygonal shape, and a cylindrical shape having a far-infrared radiation characteristic and also having antibacterial, deodorizing, mold-proof and insect-proof properties. By manufacturing the wood block, the wood block can be inserted into bath water for the purpose of antibacterial action, or left in a passenger car for the purpose of deodorizing action, antifungal action and hygiene such as fleas and ticks. Leave it in a chest, closet, etc. for the purpose of controlling insect pests,
Alternatively, it is an object of the present invention to be able to be inserted into an elevated water tank for the purpose of preventing the occurrence of blue water.

[0004]

According to the present invention, there is provided a composite ceramic obtained by mixing magnesia having a particle size of 5 μm or less and a serpentine metamorphic stone, or a composite ceramic obtained by mixing magnesia, zinc oxide, silica and titanium, or magnesia, silica and oxide. Mix and stir one of the composite ceramics mixed with calcium and water and a dispersant, or water.
The obtained ceramic solution is introduced into a vacuum processing machine loaded with a number of wood blocks formed in an arbitrary shape, and the inside of the vacuum processing machine is decompressed, so that the composite ceramics is coated on the surface layer of the wood block. A structure in which sealing is performed in a wall hole, or magnesia 40 to 60 having a particle size of 5 μm or less.
Or 40 to 60% by weight of serpentine metamorphic stone, or 20 to 40% by weight of magnesia, 20 to 40% by weight of zinc oxide, 20 to 40% by weight of silica and 20 to 40% by weight of titanium. A ceramic solution obtained by mixing and stirring water or a dispersant with any one of ceramics or a composite ceramic obtained by mixing 20 to 30% by weight of magnesia, 20 to 30% by weight of silica, and 40 to 60% by weight of calcium oxide. Was introduced into a vacuum machine equipped with a number of wood blocks formed in an arbitrary shape, and the pressure in the vacuum machine was reduced to -500 m.
mHg to -700 mmHg, the wall hole of the surface layer of the wood block is opened, the ceramic solution is pressed into the opened wall hole, and then the vacuum processing machine is returned to the atmospheric pressure. A method of closing the wall hole and taking out the wood block, drying the wood block with a drier, and sealing the composite ceramic in the wall hole of the surface layer of the wood block, or magnesia 40 to 60 having a particle size of 5 μm or less. Or 40 to 60% by weight of serpentine metamorphic stone, or 20 to 40% by weight of magnesia, 20 to 40% by weight of zinc oxide, 20 to 40% by weight of silica and 20 to 40% by weight of titanium. 20-30% by weight of ceramics or magnesia, silica stone 2
0-30% by weight and 40-60% by weight of calcium oxide
A ceramic solution obtained by mixing and stirring any of the composite ceramics mixed with water and water is introduced into a vacuum processing machine equipped with a number of wood blocks formed in an arbitrary shape, and the vacuum -500mm pressure inside the processing machine
Hg to -700 mmHg, to open a wall hole in the surface layer of the wood block, press-infiltrate the ceramic solution into the opened wall hole, and then return the vacuum processing machine to atmospheric pressure. The above problem is solved by adopting a method of closing the wall hole, taking out the wood block, drying the wood block with a drier, and sealing the composite ceramic in the wall hole of the surface layer portion of the wood block. did.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The present inventor individually measured the antibacterial rate, deodorizing rate and far-infrared emissivity of a single-component ceramic, and found that the ceramics were superior in antibacterial rate, deodorizing rate and far-infrared emissivity. And at the same time, mixing and stirring two or more of the above ceramics at a fixed ratio, and then having the far-infrared radiation characteristics obtained by calcining, having antibacterial properties and deodorizing properties, and having antifungal properties Mix and stir with insecticide-resistant composite ceramics and water and dispersant, or water
The obtained ceramic solution was introduced into a vacuum processing machine loaded with a number of wood blocks formed in an arbitrary shape such as a spherical shape, a polygonal shape, and a cylindrical shape, and the inside of the vacuum processing machine was decompressed to obtain the composite. By sealing the ceramic in the wall holes in the surface layer of the wood block, a wood block having far-infrared radiation properties, antibacterial properties, deodorizing properties, fungicidal properties, and insect repellency was completed. Hereinafter, the present invention will be described in detail.

[0006] The antibacterial rate, deodorizing rate and average emissivity of the single component ceramics constituting the composite ceramics having far-infrared radiation properties and having antibacterial properties and deodorizing properties used in the present invention were measured. 1, the measured values shown in Table 2 were obtained.

[0007]

[Table 1]

[0008]

[Table 2]

From the results shown in Table 1, magnesia has an antibacterial rate of almost 100% against Escherichia coli and staphylococci, but has little deodorizing properties against odor sources such as ammonia and hydrogen sulfide. Zinc has a deodorization rate of 100% with respect to hydrogen sulfide, but has little deodorization and little antibacterial property with respect to ammonia, and silica has 100% with respect to hydrogen sulfide and 93% with respect to ammonia. % Deodorization rate, but little antibacterial property, calcium oxide has 80% deodorization rate against ammonia and hydrogen sulfide, 85% against Escherichia coli and 95% against staphylococci Has an antibacterial rate and metamorphic serpentine is 86% against E. coli and 96% against staphylococci
Antibacterial rate and 95 against ammonia
% And 90% of hydrogen sulfide. Titanium has a moderate deodorization rate of only 60% with respect to ammonia, has little deodorization with respect to hydrogen sulfide, and has almost no antibacterial property with respect to Escherichia coli and staphylococci. However, since titanium can be used as an active material for activating the effect of the ceramic by mixing with other ceramics, it was adopted in the present invention. Further, from the results in Table 2, it was found that each of the ceramics had a relatively high emissivity.

From the above results, the present inventor has found that by mixing two or more of the above-mentioned single-component ceramics, they have far-infrared radiation properties, and at the same time have antibacterial properties, deodorizing properties, fungicidal properties and insect repellency. To obtain a composite ceramic having 40 to 60% by weight of magnesia and 40 to 60% by weight of metamorphic serpentine, or 20 to 40% by weight of magnesia and 20% of zinc oxide
-40% by weight, 20-40% by weight of silica and 20% of titanium
Far-infrared emissivity and anti-mildew resistance of composite ceramics obtained by mixing 20 to 30% by weight of magnesia, 20 to 30% by weight of silica, and 40 to 60% by weight of calcium oxide When the repellency, the antibacterial rate and the deodorization rate, which indicate insect repellency against sanitary pests such as fleas and ticks, were measured, good measurement results were obtained. Then, when the composite ceramics mixed at the most preferable mixing ratios of the respective ceramics shown in Table 3 were measured, the measured values as shown in Table 4 were obtained. The composite ceramics obtained at each mixing ratio in Table 3 were defined as composite ceramics A, B, and C, respectively.

[0011]

[Table 3]

[0012]

[Table 4]

That is, all of the above three types of composite ceramics A, B, and C have an extremely high emissivity of 92% or more in far-infrared rays, and have an antibacterial rate, a deodorizing rate, anti-mold resistance, and a sanitary insect pest. It was also found that the repellent rate against the mosquito was extremely high.

Next, a method for producing a composite ceramic having far-infrared radiation characteristics, antibacterial properties, deodorizing properties, fungicidal properties and insect repellency, which is employed in the present invention, will be described in detail. The particle diameter of each ceramic of each single component constituting the composite ceramics must be fine powder of 5 μm or less, and when these ceramics are mixed, the specific gravity, moisture, humidity, etc. The characteristics of the ceramics are different from each other, and each of the ceramics, which are the raw materials, is a fine powder having a particle size of 5 μm or less. Therefore, it is very difficult to uniformly mix the ceramics because the agglomeration acts easily.

The inventor of the present invention introduced the above-mentioned two or more single-component ceramics into a mixer at a predetermined ratio at a desired mixing ratio as shown in Table 3 and mixed and stirred them.
A means of charging the mixture into a pulverizer and pulverizing the same, and further charging the pulverized substance into the mixer again, mixing and stirring, and then re-charging the pulverizer into the pulverizer for about 30 minutes. By adopting the method, it was possible to produce a uniformly mixed composite ceramics.

In order to stabilize the chemical characteristics of the uniformly mixed composite ceramics, the composite ceramics are fired by a firing machine at a calcining temperature of 200 to 500 ° C. to have far-infrared radiation characteristics and antibacterial properties. It is a composite ceramic having properties, deodorizing property, fungicide resistance, and insect repellency.

The hydrogen ion concentration of each ceramic as a material of the composite ceramics is alkaline as shown in Table 5. Also, the composite ceramics composed of each of the above ceramics has an alkaline property as shown in Table 6.

[0018]

[Table 5]

[0019]

[Table 6]

The hydrogen ion concentration of the composite ceramics employed in the present invention in which each ceramic having the hydrogen ion concentration shown in Table 5 is composited is 200 ° C. to 500 ° C. as described above.
Since it is calcined at ° C., as shown in Table 6, it exhibits an extremely stable alkaline property, and the hydrogen ion concentration does not change with time. Further, these composite ceramics are crystallized by calcination to become composite ceramics having a function of generating electric field energy (cation). The reason why the composite ceramic exhibits an alkaline property is that impurities are gasified during the sintering process, so that the composite ceramic becomes more alkaline than a single component ceramic.

From Tables 5 and 6, the composite ceramics obtained by the above-described production method is a composite ceramic having cations, and becomes hydrogen ions in an alkaline region.
It is stable for a long time of not less than one year without change over time, and has a property that the deodorizing mechanism is a decomposing action. As a result, the composite ceramics obtained by the above-described manufacturing method has a far infrared radiation characteristic. In addition, it was found that it has both antibacterial and deodorizing effects.

That is, generally, the surface layer (wall) of live bacteria is an anion, and therefore, has a neutral region (pH 7.0 to 7.0).
Although it is impossible to inhabit only in 5), cations are generated as the greatest characteristic of the composite ceramics obtained by the above-mentioned manufacturing method, so that the surface layer (wall) of the bacterial cells which are anions, At the same time as being destroyed by the cations of the composite ceramics, the bacterial cell protein is denatured and becomes difficult to breathe and dies.

Furthermore, the deodorizing action on hydrogen sulfide and ammonia is not a general action such as physical adsorption or chemical adsorption, but does not become saturated due to decomposition action. It is permanent and has no toxicity.

The processing method of the present invention will be described based on the vacuum processing apparatus shown in FIG. First, a composite ceramic having the above-mentioned far-infrared radiation characteristic, antibacterial property and deodorizing property and having a particle size of 5 μm or less is put into a stirring tank 1 together with water and a dispersant, and these are sufficiently mixed and stirred. Then, the ceramic solution in a valve (slurry) state obtained by mixing and stirring in the stirring tank 1 is injected into the storage tank 4 of the vacuum processing machine 3 through the liquid feed pipe 2. A strainer 5 is provided between the liquid feed pipe 2 and the liquid storage tank 4 to remove dust and the like.

Next, a large number of spheres, polygons, cylinders, etc., to be machined, are formed in a liquid injection tank 6 provided on the lower surface of the liquid storage tank 4 of the vacuum processing machine 3. And the lid 7 is sealed. And the storage tank 4
Injection tank 6 with ceramic solution inside via injection pipe 8
, The pressure in the liquid storage tank 4 and the liquid injection tank 6 of the vacuum processing machine 3 is increased by a pressure reducer 9, preferably −1.
000 mmHg to -550 mmHg, particularly preferably-
It is set to 700 mmHg to -500 mmHg. When the pressure in the liquid storage tank 4 and the liquid injection tank 6 of the vacuum processing machine 3 reaches the above-described preferable pressure, so-called “fluff” is applied to the wall pore cells in the surface layer of the wood block inserted into the liquid injection tank 6. The phenomenon of “taki” (generally, a brushing phenomenon) occurs to open a wall hole. When this state is reached, the ceramic solution activated by the addition and mixing of the dispersing agent presses into the opened wall holes. The phenomenon of the "fluff lash" occurs in the range from the outer layer to about 0.4 to 0.8 mm.

After that, the ceramic solution is transferred from the injection tank 6 to the storage tank 4 by the drain pump 10 through the discharge pipe 11.
The return valve 12 is closed, and the inside of the injection tank 6 is again evacuated to remove the ceramic solution adhering to the surface layer of the wood block. Then, the removed ceramic solution is returned to the atmospheric pressure in the injection tank 6 and discharged into the storage tank 4, whereby the vacuum processing of the wood block is completed,
The lid 7 is opened and the treated wood block is taken out.

Next, since the wood block taken out of the vacuum processing machine 3 is immersed in a ceramic solution and contains a large amount of water, the wood block is charged into a dryer and dried.

The wall hole is inserted into the liquid injection tank 6 of the vacuum processing machine 3 so as to be opened in a state of "fluffing", and the wall hole after the ceramic solution is injected and permeated through the opening is formed. In the drying step, the opening is completely restored to the original state, the opening is closed, and the composite ceramics is sealed in the wall hole of the surface layer of the wood block. In addition, the processing of the wood block having antibacterial, deodorizing, antifungal and insect repellent properties is completed.

The composite ceramic is preferably 3 to
It is recommended that 5% by weight, particularly preferably 4% by weight, be mixed with water and a dispersant. The dispersant added to and mixed with the ceramic solution and water is not particularly limited, but is preferably hexametaphosphoric acid. Soda, Teapol
Or it is recommended to use any of the isooctane nonionic surfactants, and the amount added is between 0.10 and
It is preferably about 0.18% by weight, and most preferably about 0.15% by weight.

The above processing method is a processing method in which a ceramic solution is pressed into a large number of wood blocks formed into an arbitrary shape such as a spherical shape, a polygonal shape, a cylindrical shape, or the like using a dispersant. It is also possible to press-infiltrate the ceramic solution obtained by mixing only with water into the wall hole of the surface layer portion of the wood block without adding and mixing the agent. In this case, the time required for the ceramic solution to be injected and penetrated into the wall holes of the surface layer of the wood block is about twice as long as that when a dispersant is used.

The wood block processed by the processing method of the present invention has far-infrared radiation properties, and is imparted with antibacterial activity and deodorizing activity. FIG. 2 is a distribution diagram showing the far-infrared emissivity of a wood block processed by the processing method of the present invention and general-purpose wood. It can be seen that the wood block by the processing method of the present invention has a higher far-infrared emissivity. .

Further, Table 7 is a table showing the results obtained by measuring the antibacterial efficiency of each wood block having a different tree type processed by the processing method of the present invention, and Table 8 is a tree type processed by the processing method of the present invention. 4 is a table showing the results of measuring the deodorization rates of the respective wood blocks having different values.

[0033]

[Table 7]

[0034]

[Table 8]

From the results of Tables 7 and 8, Yonematsu, Lauan,
Although spruce had some difficulty in deodorizing hydrogen sulfide, it was found that the other antibacterial and deodorizing rates were quite high.

Further, Table 9 is a table showing the results obtained by measuring the hardness of each wood block having a different tree species processed by the processing method of the present invention and each wood before processing according to JISZ2117.

[0037]

[Table 9]

From the measurement results in Table 9, it was found that the hardness of the wood block after processing was higher and harder than that of the wood before processing for both softwoods and hardwoods. The fact that the processed wood block has a higher hardness means that the water permeability is poor and the water resistance is excellent and the strength is also excellent.

[0039]

Example 1 A case where sodium hexametaphosphate was used as a dispersant for the composite ceramics A and a case where no dispersant was used at all were divided. Table 10 shows the results of measuring the penetration depth and characteristics of the ceramics in the cedar block obtained by processing with the same concentration of.

[0040]

[Table 10]

[0041]

Embodiment 2 The composite ceramic B was divided into a case where Teapol was used as a dispersant and a case where no dispersant was used. Table 11 shows the measurement results of the penetration depth and the characteristics of the cedar wood block obtained by processing at the same concentration.

[0042]

[Table 11]

[0043]

Embodiment 3 The above composite ceramics C is divided into a case where an isooctane nonionic surfactant is used as a dispersant and a case where no dispersant is used, and the degree of vacuum and the processing time are different. Table 12 shows the measurement results of the penetration depth and characteristics of the cedar block obtained by processing the ceramic solution at the same concentration.

[0044]

[Table 12]

From the measurement results in Tables 7 to 12,
The wood block obtained by the processing method of the present invention has far-infrared radiation characteristics, and has a composite ceramic having antibacterial properties, deodorizing properties, antifungal properties, and insect repellency, which are sealed in the wall holes of the surface layer. It has been found that the composite ceramics imparts far-infrared radiation properties, antibacterial properties, deodorizing properties, fungicidal properties, and insect repellency to the wood blocks.

In other words, the antibacterial mechanism of the composite ceramics is that the surface layer (wall) of general living bacteria such as Escherichia coli and staphylococci is an anion, and is therefore in a neutral region (pH 7.0).
0-7.5), but the single-component ceramics or composite ceramics generate cations by far-infrared radiation. At the same time as being destroyed by the cations, the bacterial proteins are denatured and become respiratory difficulties and die.

In addition, the generation of sanitary pests such as fleas and ticks is inhibited by the cations of the ceramics as in the case of the general living bacteria. In addition, cations prevent the growth or growth of fungi, and serve as a fungicide.

Further, the deodorizing mechanism of the composite ceramics against hydrogen sulfide, ammonia, etc. is not a general action such as physical adsorption or chemical adsorption, but is not saturated because of a decomposition action based on far-infrared radiation.
As well as antibacterial activity, it has semi-permanent deodorizing power and has no toxicity.

Further, the wood block obtained by the processing method of the present invention has a high hardness, so that it has hydrophobicity to water, is excellent in water resistance, and is excellent in flame resistance. It can act as an anti-rot and insect repellent.

Next, Escherichia coli and Staphylococcus aureus were measured separately when the spherical cypress block processed by the processing method of the present invention was charged in bath water after bathing for 4 people and when it was not charged. Table 13 shows the results. The measurement conditions were as follows: bath water after bathing for 4 persons; 0.24 m3 in bath water;
20 spherical spherical cypress blocks (total surface area: 0.48 m2) in which 10 g of composite ceramics were sealed per spherical cypress block of 024 m2 were charged, and one day and two days.
The number of Escherichia coli and Staphylococcus aureus after the passage of days was measured. For comparison, the numbers of Escherichia coli and Staphylococcus aureus before bathing were also measured.

[0051]

[Table 13]

From the measurement results in Table 13 above, it was found that there were 10 Escherichia coli before bathing. However, in the bath water after bathing by 4 persons, if the spherical cypress block was not inserted, Escherichia coli was 280 after one day. The number increases to 2,900 after 2 days,
In addition, there were 15 Staphylococcus aureus before bathing,
While the number increases to 500 after one day and 3,850 after two days, when the spherical cypress block processed by the processing method of the present invention is put into bath water after bathing by four people, the bathing is started. 10 E. coli and 15 S. aureus before
After 1 day and 2 days, neither E. coli nor Staphylococcus aureus was observed, and the spherical cypress block processed by the processing method of the present invention was not sufficient. It was found to have antibacterial action. In addition, since all of the hinoki blocks had hydrophobicity, they hardly contained bath water even after two days had passed, did not settle down, and kept floating on the bath water.

Table 14 is a table showing the results of measuring the deodorization rate of alkaline and acidic odors by leaving the spherical hinoki blocks processed by the processing method of the present invention in a passenger car, and The deodorization rate was 100% for both alkaline and acidic odors. The measurement conditions are as follows. Two spherical cypress blocks (total surface area: 0.048 m2) each having 10 g of composite ceramics sealed per spherical cypress block having a surface area of 0.024 m2 are placed in a passenger car, and the window is closed. And measured.

[0054]

[Table 14]

Table 15 is a table showing the results of measuring the occurrence rate of blue-green algae by inserting a spherical cypress block processed by the processing method of the present invention into an elevated water tank installed on the roof of a building or the like. It is. The measurement conditions were as follows: 1 m3 of water in the elevated water tank where 15% of blue-green algae were generated when the cypress block was charged.
Then, 40 spherical hinoki blocks (total surface area: 0.96 m2) in which 10 g of composite ceramics were sealed per spherical hinoki block having a surface area of 0.024 m2 were charged.
After 10 days, 20 days, and 30 days, the occurrence rates of blue-green algae were measured.

[0056]

[Table 15]

From the measurement results in Table 15, it was found that, by charging the spherical cypress block processed by the processing method of the present invention into an elevated water tank, 15% of the blue coconut was generated at the time of charging on the 10th day. Disappeared completely, and even after 20 and 30 days had passed, it was found that no blue-green algae was generated at all. This is due to the effects of the far infrared rays and the antibacterial mechanism of the composite ceramics, which prevented the occurrence of blue-green algae.

Further, Table 16 is a table showing the results obtained by measuring the mold resistance according to JIS Z 2911 and the repellency against sanitary pests such as fleas and ticks of the spherical hinoki wood block processed by the processing method of the present invention.

[0059]

[Table 16]

Further, Table 17 shows that the spherical cypress blocks processed by the processing method of the present invention were left in a closet,
It is a table | surface which shows the result of having measured the incidence rate of a mold and a tick after 5 days and 10 days.

[0061]

[Table 17]

From the measurement results shown in Tables 16 and 17, the spherical cypress blocks processed by the processing method of the present invention have mold resistance and a high rate of inhibiting the occurrence of sanitary pests such as fleas and mites. It was found that by standing still inside, no mold was generated and the generation of ticks could be prevented.

[0063]

According to the present invention as described above, the wood block processed by the processing method of the present invention has a far-infrared radiation characteristic, and at the same time, has an antibacterial property, a deodorizing property, a fungicidal property, and an insect repellent magnesia. Any one of the composite ceramics mixed with and the serpentine metamorphic stone, or the composite ceramics mixed with magnesia, zinc oxide, silica and titanium, or the composite ceramics mixed with magnesia, silica and calcium oxide is a surface layer of the wood block. Since the wood block is sealed in the wall hole, the wood block is provided with far-infrared radiation properties, antibacterial properties, deodorizing properties, fungicidal properties, and insect repellency. And, according to the processing method of the present invention, far-infrared radiation properties, antibacterial properties, deodorization and fungicidal properties, when the wood block imparted insect repellency is charged into bath water,
The antibacterial action prevents the outbreak of Escherichia coli and staphylococci and, of course, has the effect of removing the smell of bath water because it also has a deodorizing effect, and also has the effect of warming up to the core of the body by the far-infrared radiation effect . In addition, by leaving the wood block processed by the processing method of the present invention in a passenger car, the odor in the passenger car is removed, and further, a closet,
By standing still in the closet, the occurrence of mold is prevented, and the occurrence of sanitary pests such as fleas and mites is prevented,
It is possible to prevent the occurrence of mold and worms in clothing and futons. Further, by inserting the wood block processed by the processing method of the present invention into an elevated water tank, it is possible to prevent the occurrence of blue water. Still further, far-infrared radiation characteristics of the wood block obtained by the processing method of the present invention,
Antibacterial, deodorant and antifungal and insect repellent properties are retained semi-permanently.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of a vacuum processing apparatus used in a method for processing wood of the present invention.

FIG. 2 is a distribution diagram showing far-infrared emissivity between a wood block processed by the wood processing method of the present invention and general-purpose wood.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Stirring tank, 2 Liquid feed pipe, 3 Vacuum processing machine 4
Liquid storage tank, 5 strainer, 6 injection tank, 7
Lid, 8 injection pipe, 9 decompressor, 10 drain pump, 11 drain pipe, 12 valve.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B27K 3/16-3/32

Claims (3)

(57) [Claims] 1. A composite ceramic in which magnesia having a particle size of 5 μm or less and serpentine metamorphic stone are mixed, or a composite ceramic in which magnesia, zinc oxide, silica stone and titanium are mixed,
Or water and dispersion with one of the composite ceramics which mixed magnesia, silica and calcium oxide
Agent, or a ceramic solution obtained by mixing and stirring with water is introduced into a vacuum processing machine equipped with a number of wood blocks formed in an arbitrary shape, and the inside of the vacuum processing machine is decompressed to obtain the composite ceramic. Is sealed in the wall hole of the surface layer of the wood block, and has a far-infrared radiation characteristic, and also has an antibacterial property, a deodorizing property, a mold-proof property, and an insect-proof property. 2. A composite ceramic obtained by mixing 40 to 60% by weight of magnesia having a particle size of 5 μm or less and 40 to 60% by weight of serpentine metamorphic stone, or 20 to 40% by weight of magnesia, 20 to 40% by weight of zinc oxide, and 20 to 40% by weight of silica stone. 40% by weight and 20 to 40% by weight of titanium, or a composite ceramic of 20 to 30% by weight of magnesia, 20 to 30% by weight of silica, and 40 to 60% by weight of calcium oxide; And a ceramic solution obtained by mixing and stirring the dispersant, and introduced into a vacuum processing machine equipped with a number of wood blocks formed in an arbitrary shape, and the pressure in the vacuum processing machine is -500 mm
Hg to -700 mmHg, to open a wall hole in the surface layer of the wood block, press-infiltrate the ceramic solution into the opened wall hole, and then return the vacuum processing machine to atmospheric pressure. Taking out the wood block by closing the wall hole, drying with a dryer, and having far-infrared radiation characteristics, characterized in that the composite ceramics is sealed in the wall hole of the surface layer portion of the wood block,
A method for processing a wood block having antibacterial properties, deodorizing properties, fungicidal properties, and insect repellency. 3. A composite ceramic obtained by mixing 40 to 60% by weight of magnesia having a particle size of 5 μm or less and 40 to 60% by weight of serpentine metamorphic stone, or 20 to 40% by weight of magnesia, 20 to 40% by weight of zinc oxide, and 20 to 40% by weight of silica stone. 40% by weight and 20 to 40% by weight of titanium, or a composite ceramic of 20 to 30% by weight of magnesia, 20 to 30% by weight of silica, and 40 to 60% by weight of calcium oxide; The ceramic solution obtained by mixing and stirring is introduced into a vacuum processing machine loaded with a number of wood blocks formed in an arbitrary shape,
And the pressure in the vacuum processing machine is -500 mmHg to -70.
At 0 mmHg, a wall hole in the surface layer of the wood block was opened, and the ceramic solution was pressed into and penetrated into the opened wall hole. Closed to take out the wood block, dried by a dryer, having far-infrared radiation characteristics characterized by sealing the composite ceramics in the wall hole of the surface layer of the wood block, antibacterial, A method for processing a wood block having deodorizing, mold-proof and insect-proof properties.