JPWO2008126760A1 - Humidity control building material and manufacturing method thereof - Google Patents

Abstract

A humidity control building material having good color development and high strength, and a method for producing the same. The first kneaded material containing the humidity conditioning raw material is granulated to produce granulated particles 1. A powder made of the second clay containing the humidity conditioning raw material and the molten raw material is prepared. The powder is coated on the surface of the granulated particles 1 to form the powder layer 2, and then the pigment 3 is further coated to obtain the forming raw material 10. A humidity control building material can be obtained by press-molding and firing the molding material 10.

Description

Field of Invention

  The present invention relates to a humidity control building material containing a pigment and a method for producing the same, and more particularly, to a humidity control building material having good color development and high strength, and a method for manufacturing the same. More specifically, the present invention relates to a humidity control building material using a humidity control raw material, a molten raw material (flux), and a pigment, and a method for producing the same.

Background of the Invention

  As a method for obtaining a colored humidity-conditioning building material, a method for decorating the surface of the humidity-conditioning building material and a method for adding a pigment to the substrate of the humidity-conditioning building material are known.

  Among these, the humidity control building material (for example, Unexamined-Japanese-Patent No. 11-315586 (US2001 / 0018134A1, U.S. Pat. No. 6,472,061)) whose surface is decorated with glazing is not glazed and decorated with other materials. There is a problem that it is different from the surface and lacks in design.

  Various methods are known as a method for incorporating a pigment into the base material of the humidity control building material.

I. For example, in Japanese Patent Laid-Open No. 2001-106564, a humidity control tile is manufactured by spray granulating a tile raw material containing a humidity control material and a colorant into a granulated product, and press-molding and firing the granulated product. How to do is described.

II. In addition, the same number includes spray granulating a tile raw material containing a humidity control material to form a granulated product, coating the granulated product with a colorant, and then press-molding and firing the granulated product, A method for producing a humidity control tile is described.
JP-A-11-315586 JP 2001-106564 A

  When a granulated product containing a colorant is molded and fired as in I above, since the colorant is present inside the granulated product, the resulting moisture-conditioning building material has poor color development. Moreover, there is a problem that the colorant inside the granulated product becomes a defect and the strength is lowered.

  Further, as in the case of II above, even when a granulated product coated with a colorant is molded and fired, there is a problem that the colorant around the granulated product becomes a defect and the strength decreases.

Summary of the Invention

  An object of the present invention is to provide a humidity control building material having good color development and high strength, and a method for producing the same.

  The method for producing a humidity control building material of the first aspect (aspect) is a method of manufacturing a humidity control building material in which a molding raw material containing a humidity control raw material is press-molded and fired. It is characterized by using as the forming raw material a granulated particle, which is obtained by coating the surface of the granulated particle with a powder containing a humidity conditioning raw material and a molten raw material and then further applying a pigment.

  The method for producing a humidity control building material according to the second aspect is a method for manufacturing a humidity control building material in which a molding raw material containing a humidity control raw material is press-molded and baked. The granulated particles are coated with a powder containing a humidity-controlling raw material, a pigment and a molten raw material, and used as a forming raw material.

  The manufacturing method of the humidity control building material of the third aspect is the method of manufacturing a humidity control building material in which the molding raw material containing the humidity control raw material is press-molded and fired, and granulated the clay containing the humidity control raw material into granulated particles. The granulated particles are coated with a molten raw material and a pigment and used as a raw material for molding.

It is preferable that the clay contains a moisture conditioning raw material, clay, and a molten raw material in the following proportions.
Humidity conditioning raw material: 100 parts by mass Clay: 100-1000 parts by mass Melting raw material: 0-500 parts by mass

  The humidity conditioning material is at least one selected from the group consisting of a volcanic pumice layer, diatomaceous earth, acid clay, activated clay, zeolite, halloysite, and sepiolite, and the melting raw material is lithium silicate glass, soda lime glass, silica. It is at least one selected from the group consisting of silicate glass such as acid alkali glass, borosilicate glass, phosphate glass, borax, lithium salt, potassium salt and sodium salt, and the pigment is from metal oxide It is preferable to become.

  The average particle diameter of the granulated particles is preferably 20 to 400 μm, and the average particle diameter of the pigment is preferably 0.5 to 10 μm.

1st aspect WHEREIN: It is preferable that the said powder further contains clay, and the mixture ratio of powder is humidity-control raw material: 100 mass parts Clay: 1000 mass parts or less Molten raw material: 20-600 mass parts.

  In the first embodiment, the average particle size of the powder is 1 to 400 μm, particularly 20 to 200 μm, and the ratio B / A between the average particle size B of the powder and the average particle size A of the granulated particles is 1 / It is preferably 20 to 1/1, particularly 1/5 to 1/1.

2nd aspect WHEREIN: The said powder further contains clay, and the mixture ratio of powder is humidity-control raw material: 100 mass parts Clay: 1000 mass parts or less Molten raw material: 20-600 mass parts Pigment: 0.1-5 It is preferable that it is a mass part.

  In the second embodiment, the average particle size of the powder is 1 to 400 μm, particularly 20 to 200 μm, and the ratio B / A of the average particle size B of the powder to the average particle size A of the granulated particles is 1 / It is preferably 20 to 1/1, particularly 1/5 to 1/1.

  In the third aspect, the molten raw material and the pigment may be mixed to form a mixed powder, and the mixed powder may be applied to the granulated particles.

  In the third aspect, the granulated particles may be coated with the molten raw material and then the pigment.

  In the third aspect, the average particle diameter of the molten raw material is 0.5 to 100 μm, particularly 10 to 50 μm, and the ratio D / A between the average particle diameter D of the molten raw material and the average particle diameter A of the granulated particles is 1/800 to 1/5, particularly preferably 1/10 to 1/2.

  3rd aspect WHEREIN: It is preferable that the ratio of the molten raw material with respect to 100 mass parts of said granulated particles is 1-50 mass parts especially 1-10 mass parts, and the ratio of a pigment is 0.1-5 mass parts.

  According to the method for producing a humidity control building material of the present invention, it is possible to obtain a humidity control building material with good pigment coloration and high strength.

  That is, in the first aspect, since the powder is coated on the surface of the granulated particles and the pigment is coated thereon, a smaller amount of the pigment is contained than in the case where the pigment is contained in the granulated particles. Good color development can be obtained with a pigment. Further, since the pigment is coated on the powder containing the molten raw material, the color is improved by the pigment being dissolved in the molten raw material during firing. Further, the granulated particles contained in the powder are firmly connected to each other at the time of firing, and as a result, a humidity control building material with high strength can be obtained. In addition, since this powder contains a humidity conditioning material in addition to the molten material, the portion obtained by firing this powder has humidity conditioning properties. For this reason, the portion formed by firing the powder does not block moisture from entering and exiting the portion formed by firing the granulated particles, and the humidity control building material has good humidity control performance. Become.

  In the second aspect, since the pigment is contained in the powder that is applied to the granulated particles, a good color can be obtained with a small amount of pigment as compared with the case where the pigment is contained in the granulated particles. In addition, since the powder contains a molten raw material together with the pigment, the pigment is dissolved in the molten raw material at the time of firing, so that the color development becomes better. Further, the granulated particles contained in the powder are firmly connected to each other at the time of firing, and as a result, a humidity control building material with high strength can be obtained. In addition, since this powder contains a humidity control raw material in addition to the molten raw material and the pigment, the portion formed by firing this powder has a humidity control property. For this reason, the portion formed by firing the powder does not block moisture from entering and exiting the portion formed by firing the granulated particles, and the humidity control building material has good humidity control performance. Become.

  In the third aspect, since the pigment is coated on the surface of the granulated particles, a good color can be obtained with a small amount of pigment as compared with the case where the pigment is contained in the granulated particles. In addition, since the molten raw material is also coated with the pigment on the surface of the granulated particles, the pigment is dissolved in the molten raw material at the time of firing, so that the color development becomes better. Furthermore, since this forming raw material is made by interspersing a molten raw material and a pigment on the surface of the granulated particles, when the forming raw material is press-molded and fired, the granulated particles are strongly bonded to each other by the molten raw material during firing. As a result, a humidity control building material with high strength can be obtained. In addition, the resulting humidity-conditioning building material has a microstructure in which the molten raw material and the pigment are scattered around the sintered area where the granulated particles are sintered, so that moisture enters and exits the sintered area. As a result, the humidity-control building material is excellent in humidity-control performance.

  In the third aspect, the molten raw material and the pigment may be mixed to form a mixed powder, and the mixed powder may be applied to the granulated particles. In this case, by mixing the molten raw material and the pigment, the pigment is more easily dissolved in the molten raw material at the time of firing, and the color development becomes better.

  However, even when the granulated particles are coated with a molten raw material and then with a pigment, the pigment is sufficiently dissolved in the molten raw material at the time of firing, and color development is improved.

  The humidity control building material of another aspect is a humidity control building material comprising a sintered body of clay containing a humidity control raw material, wherein the sintered body is interposed between the granular sintered portions and the granular sintered portions. And a pigment is contained in the intervening portion.

  Since the humidity control building material contains the pigment in the interposition part, the color development is better than the case where the pigment is contained in the sintered part.

It is typical sectional drawing of the raw material for shaping | molding used for the manufacturing method of the humidity control building material which concerns on 1st Embodiment. It is typical sectional drawing of the humidity-control building material manufactured using the raw material for shaping | molding of FIG. It is typical sectional drawing of the raw material for shaping | molding used for the manufacturing method of the humidity control building material which concerns on 2nd Embodiment. It is typical sectional drawing of the raw material for shaping | molding used for the manufacturing method of the humidity control building material which concerns on 3rd Embodiment. It is typical sectional drawing of the humidity-control building material manufactured using the raw material for shaping | molding of FIG. FIG. 6a is a schematic cross-sectional view of a forming raw material used in the method for manufacturing a humidity control building material according to the fourth embodiment, and FIG. 6b is a schematic view of the humidity control building material formed and fired from this raw material. It is sectional drawing.

Detailed description

  Hereinafter, the first to fourth embodiments will be described in detail with reference to the drawings.

  Each of the first to fourth embodiments includes a step of granulating the granulated particles 1 and a step of spraying the granulated particles with powder. In the first and fourth embodiments, the first and second spraying steps are performed. In the second and third embodiments, the dusting process is performed only once.

  The composition of the powder used in the dusting process of each embodiment is as shown in Table 1 below.

  The same granulated particles are used in the first to fourth embodiments.

[First Embodiment]
The first embodiment relates to the first aspect described above.

  FIG. 1 is a schematic cross-sectional view of a forming raw material 10 used in the method for manufacturing a humidity control building material according to the first embodiment, and FIG. 2 is manufactured using the forming raw material 10 of FIG. It is a typical sectional view of a humidity control building material.

  This forming raw material 10 is obtained by applying powder to the surface of the granulated particles 1 and further applying the pigment 3. In FIG. 1, reference numeral 2 denotes a powder layer formed by applying powder onto the surface of the granulated particles 1. The humidity control building material is manufactured by press-molding and firing the raw material 10 for molding.

<Granulated particles>
As this granulated particle 1, what granulated the clay containing a humidity control raw material is used.

  This dredged soil includes, for example, volcanic pumice layers, diatomaceous earth, acid clay, activated clay, zeolite, halloysite, sepiolite, and so on, Including clay and clay. This clay may further contain a molten raw material such as a glassy component. The preferred blending ratio of the clay is as follows.

Mixing ratio (parts by mass)
Humidity conditioning material: 100
Clay: 100-1000, especially 200-800
Melting raw material: 0 to 500, especially 10 to 200

  Here, the melting raw material is a raw material that melts at a firing temperature when producing a humidity-controlling building material.

  Melting raw materials include lithium silicate glass, soda lime glass, silicate glass such as alkali silicate glass, borosilicate glass, phosphate glass, borax, lithium salt, potassium salt, sodium salt, etc. Is used.

  The average particle diameter of the granulated particles 1 is preferably 20 to 400 μm, particularly 70 to 200 μm, especially 100 to 200 μm.

  The granulated particles 1 can be obtained, for example, by finely polishing the above granulation clay with a mill or the like and then spray granulating.

  In this granulation process, the granulated particles 1 are preferably prepared to have a moisture content of 5 to 9%, particularly about 6 to 8%.

<Powder>
In this embodiment, the powder applied to the granulated particles includes a humidity control raw material and a molten raw material. This powder may further contain clay. As the humidity conditioning raw material, the melting raw material, and the clay, the same materials as those for the granulated particle clay are used.

This powder is preferably a mixture having the following composition.
Humidity conditioning raw material: 100 parts by mass Clay: 1000 parts by mass or less, particularly 100 to 1000 parts by mass Melting raw material: 20 to 600 parts by mass, particularly 20 to 300 parts by mass

  When the ratio of the molten raw material contained in the powder to 100 parts by mass of the humidity-controlling raw material is 20 parts by mass or more, the granulated particles are firmly connected to each other at the time of firing by the molten raw material. High humidity conditioning materials can be obtained. When the amount is 600 parts by mass or less, the portion obtained by baking the powder has excellent humidity control properties, and as a result, the humidity control building material obtained also has good humidity control properties.

  The average particle size of the powder is preferably 1 to 400 μm, particularly 10 to 200 μm, particularly 20 to 200 μm. The ratio B / A between the average particle size B of the powder and the average particle size A of the granulated particles 1 is 1/20 to 1/1, particularly 1/10 to 1/1, especially 1/5 to 1/1. It is preferable that

  This powder can be obtained, for example, by finely polishing the humidity conditioning raw material, the molten raw material and the clay with a mill or the like and then drying with a spray dryer.

  The moisture content of the powder is preferably 0 to 10%, particularly preferably about 0 to 7%.

<Pigment>
Various pigments can be used as the pigment 3, but green pigments mainly composed of oxides such as Co, Al, Ca and Cr, black pigments containing oxides such as Fe, Cr and Ni, Ti Tea pigments mainly composed of oxides such as Cr are preferred.

  The average particle diameter of the pigment 3 is preferably 0.5 to 10 μm, particularly preferably 1 to 5 μm.

<Ratio of granulated particles, powder and pigment>
The forming raw material 10 is obtained by spraying the above-mentioned granulated particles 1 with the above powder using an Eirich mixer or the like, and then applying the above pigment with an Eilic mixer or the like.

  The amount of the powder applied to the granulated particles is preferably 1 to 100 parts by mass, particularly 1 to 20 parts by mass with respect to 100 parts by mass of the granulated particles. When the amount is 1 part by mass or more, the granulated particles are strongly connected to each other at the time of firing by the melting raw material contained in the powder, and as a result, a humidity-controlling building material having high strength can be obtained. When the amount is 100 parts by mass or less, since the ratio of the granulated particles 1 is large, the humidity control property of the resulting humidity control building material becomes favorable.

  The amount of the pigment 3 applied to the granulated particles is appropriately determined according to the type of pigment used, the required color tone, and the like, but is preferably about 0.1 to 5 parts by mass with respect to 100 parts by mass of the granulated particles.

<Molding and firing>
The humidity control building material is obtained by press-molding the molding raw material 10 to form a plate-shaped molded body and firing the molded body.

  As shown in FIG. 2, the obtained humidity conditioning building material has a granular sintered portion 11 formed by sintering the granulated particles 1 and an intervening portion 12 formed by sintering the powder layer 2 and the pigment. . The interposition part 12 is interposed between the granular sintered parts 11. In addition, since the forming raw material 10 is pressed in the pressing direction (up and down direction in FIG. 2) when the forming raw material 10 is press-molded, the granular sintered portion 11 has a shape compressed in the pressing direction. It has become.

The press pressure at the time of press molding is, for example, about a surface pressure of 100 to 300 kg / cm ² .

  The firing temperature is, for example, 600 to 1100 ° C., particularly 700 to 1000 ° C., and the firing time is, for example, about 0.3 to 48 hours.

  In addition, you may make it bake after drying a molded object for about 0.3 to 24 hours at about 60-150 degreeC.

  In this humidity conditioning building material, the powder is coated on the surface of the granulated particles 1, and the pigment 3 is coated on the powder layer 2 made of this powder. Compared with the case where it is contained, good color development can be obtained with a smaller amount of pigment.

  Further, since the pigment 3 is coated on the powder layer 2 containing the molten raw material, the color development becomes better when the pigment 3 is dissolved in the molten raw material during firing.

  Furthermore, the molten raw material contained in the powder layer 2 causes the granulated particles to be firmly connected at the time of firing. As a result, a humidity-controlling building material with high strength can be obtained. In the humidity control building material obtained, the pigment 3 is present in the interposition part 12.

  Further, since the powder layer 2 contains a humidity conditioning material in addition to the molten material, the interposition part 12 obtained by firing the powder layer 2 has a moisture conditioning property. As a matter of course, the granular sintered portion 11 obtained by sintering the granulated particles 1 containing the humidity conditioning raw material also has humidity conditioning properties. For this reason, moisture is not interrupted by the interposition part 12 and can easily enter and exit the granular sintered part 11 through the interposition part 12. For this reason, the obtained humidity control building material has favorable humidity control performance.

[Second Embodiment]
The second embodiment relates to the second aspect.

  FIG. 3 is a schematic cross-sectional view of a forming raw material 10A used in the method for manufacturing a humidity-control building material according to the second embodiment.

  In the second embodiment, the granulated particles 1 are covered with a powder containing a humidity-controlling raw material, a molten raw material and a pigment to form a forming raw material 10A (FIG. 3). This powder may further contain clay.

  In FIG. 3, reference numeral 2A indicates a powder layer formed by coating the surface of the granulated particles 1 with this powder, and 3A indicates a pigment contained in the powder layer 2A.

<Granulated particles>
As the granulated particles 1, the same particles as those of the granulated particles 1 of the first embodiment are used.

<Powder>
The preferred formulation of this powder is as follows.
Humidity conditioning raw material: 100 parts by mass Clay: 1000 parts by mass or less, particularly 100-1000 parts by mass Melting raw material: 20-600 parts by mass, especially 20-300 parts by mass Pigment: 0.1-5 parts by mass

  The average particle size of the powder is preferably 1 to 400 μm, particularly 10 to 200 μm, particularly 20 to 200 μm. The ratio B / A between the average particle size B of the powder and the average particle size A of the granulated particles 1 is 1/20 to 1/1, particularly 1/10 to 1/1, especially 1/5 to 1/1. It is preferable that

  The other raw materials, procedures, conditions, and the like of the method for manufacturing a humidity control building material according to the second embodiment are all the same as those of the method for manufacturing a humidity control building material according to the first embodiment. The humidity control building material thus obtained has the structure shown in FIG. 2 as in the case of the first embodiment.

  According to the method for manufacturing a humidity control building material according to the second embodiment, as well as the method for manufacturing a humidity control building material according to the first embodiment, the color of the pigment is good, the strength is high, and excellent. Thus, a humidity control building material having high humidity control performance can be obtained.

[Third Embodiment]
The third embodiment relates to an example of the third aspect.

  FIG. 4 is a schematic cross-sectional view of a forming raw material 10B used in the method for manufacturing a humidity control building material according to the third embodiment, and FIG. 5 is manufactured using the forming raw material 10B of FIG. It is sectional drawing of the humidity control building material.

  This forming raw material 10B is obtained by coating the granulated particles 1 with a mixed powder 5 of a molten raw material and a pigment using an Eirich mixer or the like. A humidity control building material is manufactured by press-molding and firing the raw material for molding 10B.

<Granulated particles>
As the granulated particle 1, the same granulated particle 1 as that of the first embodiment is used.

<Mixed powder>
As the melting raw material contained in the mixed powder 5, silicate glass such as lithium silicate glass, soda lime glass, alkali silicate glass, borosilicate glass, phosphate glass, borax, lithium salt , Potassium salt, sodium salt and the like are used.

  The average particle size of the molten raw material contained in the mixed powder 5 is preferably 0.5 to 100 μm, more preferably 1 to 50 μm, and particularly preferably 10 to 50 μm. The ratio D / A between the average particle diameter D of the molten raw material and the average particle diameter A of the granulated particles 1 is 1/800 to 1/5, particularly 1/200 to 1/2, especially 1/10 to 1/2. It is preferable that

  As the pigment contained in the mixed powder 5, as in the pigment 3 of the first embodiment, green pigments mainly composed of oxides such as Co, Al, Ca and Cr, and oxidations such as Fe, Cr and Ni. Black pigments containing substances, tea pigments mainly composed of oxides such as Ti and Cr, and the like are preferably used.

  The average particle diameter of the pigment is preferably 0.5 to 10 μm, particularly 1 to 5 μm.

  This mixed powder 5 can be obtained, for example, by finely polishing the molten raw material and the pigment with a mill or the like and then drying with a spray dryer.

  The water content of the mixed powder 5 is preferably 0 to 10%, particularly about 0 to 7%.

  The preferable amounts of the melt raw material and the pigment with respect to the granulated particles are as follows.

  The ratio of the molten raw material to the granulated particles 1 is preferably 1 to 50 parts by mass, particularly 1 to 10 parts by mass with respect to 100 parts by mass of the granulated particles. When the amount is 1 part by mass or more, the granulated particles 1 are firmly connected to each other at the time of firing due to the molten raw material, and as a result, a high-strength humidity conditioning building material can be obtained. When the amount is 50 parts by mass or less, moisture sufficiently enters and exits the inside of the sintered part through the part of the surface of the sintered part obtained by firing the granulated particles 1 that is not covered by the intervening part 14 described later. Therefore, the humidity control property of the humidity control building material is improved.

  The ratio of the pigment to the granulated particles 1 is appropriately determined depending on the type of pigment to be used, the required color tone, and the like, and is, for example, about 0.1 to 5 parts by mass of the pigment with respect to 100 parts by mass of the granulated particles. .

<Molding and firing>
The humidity-controlling building material is obtained by press-molding and firing the molding raw material 10B in the same manner as in the first embodiment.

  As shown in FIG. 5, the obtained humidity conditioning building material has a granular sintered portion 11A formed by sintering the granulated particles 1 and intervening portions 14 scattered around the sintered portion 11A. This interposition part 14 is produced | generated by baking mixed powder.

  In this humidity conditioning building material, since the intervening portions 14 containing the pigment are scattered around the granular sintered portion 11A, a small amount of pigment is better than when the pigment is present inside the sintered portion 11A. Color development can be obtained.

  Further, when the pigment dissolves in the interposition part 14, the color development becomes better.

  Furthermore, since the sintered parts 11A are firmly connected via the interposition part 14, the humidity-conditioning building material has high strength.

  Further, since a part of the surface of the sintered part 11A is not covered with the interposition part 14, it becomes possible for moisture to enter and exit the sintered part 11A through this uncovered part. The humidity control building material has excellent humidity control performance.

[Fourth Embodiment]
The fourth embodiment relates to another example of the third aspect.

  FIG. 6a is a schematic cross-sectional view of a forming raw material 10C used in the method for manufacturing a humidity control building material according to the fourth embodiment.

  This forming raw material 10C is obtained by first coating the granulated particles 1 with the molten raw material 4 and then with the pigment 3B. As the granulated particle 1, the same granulated particle 1 as that of the first embodiment is used. A humidity-controlled building material is obtained by press-molding and firing the molding material 10C in the same manner as in the third embodiment.

  Other procedures and conditions of the fourth embodiment are the same as those of the third embodiment.

  The structure of the humidity control building material thus obtained is as shown in FIG. 6b.

  The humidity control building material of FIG. 6b has a granular sintered portion 11A formed by sintering the granulated particles 1, and intervening portions 15 and pigments 3B scattered around the sintered portion 11A. This interposition part 15 is produced | generated when the molten raw material 4 is baked.

  In this humidity control building material, since the pigment 3B is scattered around the granular sintered portion 11A, a good color can be obtained with a small amount of pigment as compared with the case where the pigment is present inside the sintered portion 11A. Can do.

  Further, when a part of the pigment 3B is dissolved in the interposition part 15, the color development becomes better.

  Furthermore, since the sintered parts 11A are firmly connected via the interposition part 15, the humidity-conditioning building material has high strength.

  Further, since a part of the surface of the sintered part 11A is not covered with the interposition part 15, it becomes possible for moisture to enter and exit the sintered part 11A through this uncovered part. The humidity control building material has excellent humidity control performance.

  Hereinafter, Comparative Examples 1 to 3 will be described, and then Examples 1 to 5 will be described.

Comparative Example 1
The granulation clay having the following composition was finely ground by a mill and spray granulated to produce granulated particles having an average particle diameter of 100 μm.

Blend of clay for granulation Kanuma soil: 10 parts by weight Clay (Kamme clay): 80 parts by weight Molten raw material (soda lime glass): 10 parts by weight Cobalt pigment: 3 parts by weight

The above granulated particles were press-molded at a surface pressure of 200 kgf / cm ² using a press mold to produce a molded body. The molded body was dried at 110 ° C. for 24 hours and then baked with a roller hearth kiln for 60 minutes to produce a humidity-controlled building material (150 mm × 150 mm × 6 mm). The temperature of the roller heating kiln firing zone is 800 ° C.

Comparative Example 2
The granulation clay having the following composition was finely ground by a mill and spray granulated to produce granulated particles having an average particle diameter of 100 μm.

Mixing of granulation clay Kanuma soil: 10 parts by weight Clay (Kamme clay): 80 parts by weight Molten raw material (soda lime glass): 10 parts by weight

  Using an Eirich mixer, 15 g of a cobalt pigment (average particle size 0.8 μm) was applied to 1 kg of the granulated particles to obtain a molding raw material. This raw material for molding was molded, dried and fired in the same manner as in Comparative Example 1 to produce a humidity-controlled building material (150 mm × 150 mm × 6 mm).

Comparative Example 3
Granulated particles were produced in the same manner as in Comparative Example 2.

  As a glass glaze, 50 parts by mass of molten raw material (soda lime glass), 10 parts by mass of clay (clay clay) and 40 parts by mass of water were finely polished with a mill to produce a glaze having an average particle size of 1 μm.

  Using a pan-type granulator, 10 g of this glass glaze was sprayed on 1 kg of the granulated particles, and 15 g of a cobalt pigment (average particle size 0.8 μm) was applied. Thus, the raw material for shaping | molding by which the layer which consists of a glass glaze and a cobalt pigment was uniformly coated on the surface of the granulated particle was manufactured.

  This raw material for molding was molded, dried and fired in the same manner as in Comparative Example 1 to produce a humidity-controlled building material (150 mm × 150 mm × 6 mm).

Example 1
The molding raw material shown in FIG. 1 was produced by the following procedure.

  First, granulated particles were produced in the same manner as in Comparative Example 2.

  Further, powder raw materials having the following composition were finely polished by a mill and dried by a spray drier (water content of about 2%) to produce a powder having an average particle size of 50 μm (spraying powder).

Blending of raw material for powder Kanuma soil: 10 parts by mass Clay (Sasame clay): 70 parts by mass Molten raw material (soda lime glass): 20 parts by mass

  Using an Eirich mixer, 30 g of this powder was applied to 1 kg of the granulated particles, and then 10 g of a cobalt pigment (average particle size 1 μm) was applied to produce a molding raw material.

  This raw material for molding was molded, dried and fired in the same manner as in Comparative Example 1 to produce a humidity-controlled building material (150 mm × 150 mm × 6 mm).

Example 2
A molding raw material was produced in the same manner as in Example 1 except that the amount of the cobalt pigment applied was 15 g.

  This raw material for molding was molded, dried and fired in the same manner as in Comparative Example 1 to produce a humidity-controlled building material (150 mm × 150 mm × 6 mm).

Example 3
The molding raw material shown in FIG. 3 was produced by the following procedure.

  First, granulated particles were produced in the same manner as in Comparative Example 2.

  Further, a powdery clay with the following composition was finely ground with a mill and dried with a spray dryer (water content of about 2%) to produce a powder (granulated powder) having an average particle diameter of 50 μm.

Blend of clay for powder Kanuma soil: 10 parts by weight Clay (Kamme clay): 70 parts by weight Molten raw material (soda lime glass): 20 parts by weight Cobalt pigment: 2 parts by weight

  Using an Eirich mixer, 1 g of the granulated particles was coated with 30 g of this powder to produce a molding raw material.

  This raw material for molding was molded, dried and fired in the same manner as in Comparative Example 1 to produce a humidity-controlled building material (150 mm × 150 mm × 6 mm).

Example 4
The molding raw material shown in FIG. 4 was produced by the following procedure.

  First, granulated particles were produced in the same manner as in Comparative Example 2.

  Also, mixed powder of molten raw material and cobalt pigment is produced by dry-mixing 3 parts by weight of cobalt pigment (average particle diameter of 1 μm) to 1 part by weight of molten raw material (soda lime glass, average particle diameter of 20 μm). did.

  Using an Eirich mixer, 20 g of the mixed powder was applied to 1 kg of the granulated particles to produce a forming raw material.

  This raw material for molding was molded, dried and fired in the same manner as in Comparative Example 1 to produce a humidity-controlled building material (150 mm × 150 mm × 6 mm).

Example 5
The molding raw material shown in FIG. 6 was produced by the following procedure.

  Granulated particles were produced in the same manner as in Comparative Example 2.

  Using an Eirich mixer, 1 g of the above granulated particles is coated with 5 g of molten raw material (soda-lime glass, average particle size 20 μm), and then coated with 15 g of cobalt pigment (average particle size 0.8 μm). The raw material was manufactured.

  This raw material for molding was molded, dried and fired in the same manner as in Comparative Example 1 to produce a humidity-controlled building material (150 mm × 150 mm × 6 mm).

<Bending strength>
About the humidity-control building materials of these comparative examples 1-3 and Examples 1-5, the bending strength was measured based on JISA1408. The results are shown in Table 2.

<Humidity control performance>
About the humidity control building materials of these comparative examples 1-3 and Examples 1-5, the humidity control performance was evaluated with the following method.

In a constant temperature and humidity chamber maintained at a relative humidity of 50% and a temperature of 25 ° C., another sample at a constant humidity of 90% and a temperature of 25 ° C. was quickly obtained from a sample whose mass was constant (variation of 0.1% or less). It put in the constant humidity tank, and the mass increase (hygroscopic amount) 24 hours after was calculated | required per unit area (1 m < ² >). The results are shown in Table 2.

  As is clear from Table 2, Examples 1 to 5 are both excellent in bending strength and humidity control performance. On the other hand, Comparative Examples 1 and 2 have good humidity control performance but low bending strength. Comparative Example 3 has high bending strength but is inferior in humidity control performance.

  In Comparative Examples 2 and 3 and Examples 1 to 5, the color of the pigment was good.

Although the present invention has been described in detail using specific embodiments, it will be apparent to those skilled in the art that various modifications can be made without departing from the spirit and scope of the invention.
In addition, this application is based on the Japanese patent application (Japanese Patent Application No. 2007-102957) for which it applied on April 10, 2007, The whole is used by reference.

Claims (20)

In the manufacturing method of the humidity-control building material in which the raw material for molding including the humidity-controlling material is press-molded and fired,
Granulate the clay containing the moisture conditioning material into granulated particles,
A method for producing a humidity-control building material, wherein the surface of the granulated particles is coated with a powder containing a humidity-controlling raw material and a molten raw material and then further coated with a pigment as the raw material for molding. In the manufacturing method of the humidity-control building material in which the raw material for molding including the humidity-controlling material is press-molded and fired,
Granulate the clay containing the moisture conditioning material into granulated particles,
A method for producing a humidity-controlling building material, wherein the granulated particles are coated with a powder containing a humidity-controlling raw material, a pigment and a molten raw material as a forming raw material. In the manufacturing method of the humidity-control building material in which the raw material for molding including the humidity-controlling material is press-molded and fired,
Granulate the clay containing the moisture conditioning material into granulated particles,
A method for producing a humidity-control building material, wherein the granulated particles are coated with a melting raw material and a pigment as a raw material for molding. 4. The method for producing a humidity control building material according to claim 1, wherein the clay includes a humidity control raw material, clay, and a molten raw material in the following ratio.
Humidity conditioning raw material: 100 parts by mass Clay: 100-1000 parts by mass Melting raw material: 0-500 parts by mass In any one of Claims 1 thru | or 4,
The humidity conditioning raw material is at least one selected from the group consisting of a volcanic pumice layer, diatomaceous earth, acid clay, activated clay, zeolite, halloysite, and sepiolite,
The molten raw material is composed of silicate glass such as lithium silicate glass, soda lime glass, alkali silicate glass, borosilicate glass, phosphate glass, borax, lithium salt, potassium salt and sodium salt. At least one selected from the group,
A method for producing a humidity control building material, wherein the pigment comprises a metal oxide.   The method for producing a humidity-control building material according to any one of claims 1 to 5, wherein the granulated particles have an average particle size of 20 to 400 µm and the pigment has an average particle size of 0.5 to 10 µm. . 2. The powder according to claim 1, wherein the powder further contains clay, and the blending ratio of the powder is humidity-controlling raw material: 100 parts by mass Clay: 1000 parts by mass or less Melting raw material: 20-600 parts by mass Manufacturing method of humidity control building materials.   In Claim 1 or 7, the average particle diameter of the said powder is 1-400 micrometers, and ratio B / A of the average particle diameter B of this powder and the average particle diameter A of granulated particle is 1/20. The manufacturing method of the humidity-control building material characterized by being 1/1.   In Claim 1 or 7, the average particle diameter of the said powder is 20-200 micrometers, and ratio B / A of the average particle diameter B of this powder and the average particle diameter A of granulated particle | grains is 1/5. The manufacturing method of the humidity-control building material characterized by being 1/1.   The powder according to any one of claims 1, 7, 8, and 9, wherein 1 to 100 parts by mass of the powder is applied to 100 parts by mass of the granulated particles, and then 0.1 to 5 parts by mass of the pigment is applied. The manufacturing method of humidity-control building materials characterized by the above-mentioned. In Claim 2, the said powder further contains clay, and the mixture ratio of powder is humidity-control raw material: 100 mass parts Clay: 1000 mass parts or less Melting raw material: 20-600 mass parts Pigment: 0.1-5 A method for producing a humidity-controlling building material, characterized in that it is a mass part.   In Claim 2 or 11, the average particle diameter of the said powder is 1-400 micrometers, and ratio B / A of the average particle diameter B of this powder and the average particle diameter A of granulated particle is 1/20. The manufacturing method of the humidity-control building material characterized by being 1/1.   In Claim 2 or 11, the average particle diameter of the said powder is 20-200 micrometers, and ratio B / A of the average particle diameter B of this powder and the average particle diameter A of a granulated particle is 1/5. The manufacturing method of the humidity-control building material characterized by being 1/1.   4. The method for producing a humidity control building material according to claim 3, wherein the molten raw material and the pigment are mixed to form a mixed powder, and the mixed powder is applied to the granulated particles.   4. The method for producing a humidity-control building material according to claim 3, wherein the granulated particles are coated with the molten raw material and then the pigment. In claim 14 or 15,
The average particle diameter of the molten raw material is 0.5 to 100 μm, and the ratio D / A between the average particle diameter D of the molten raw material and the average particle diameter A of the granulated particles is 1/800 to 1/5. A method for producing a humidity control building material. In claim 14 or 15,
The average particle diameter of the molten raw material is 10 to 50 μm, and the ratio D / A between the average particle diameter D of the molten raw material and the average particle diameter A of the granulated particles is 1/10 to 1/2. A method for producing a humidity-controlled building material.   In any one of Claims 14 thru | or 17, The ratio of the molten raw material with respect to 100 mass parts of said granulated particles is 1-50 mass parts, The ratio of a pigment is 0.1-5 mass parts, It is characterized by the above-mentioned. The manufacturing method of humidity-control building materials.   The humidity-control building material manufactured by the method of any one of Claims 1 thru | or 18. In humidity control building materials consisting of a sintered body of clay containing humidity control materials,
The sintered body has a granular sintered part and an intervening part interposed between the granular sintered parts,
A humidity control building material, wherein the interposition part contains a pigment.

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