KR100823861B1 - A construction plate and method for manufacturing the same - Google Patents

Abstract

The present invention is to provide a building plate and a method of manufacturing the same, which can exhibit a feeling of brightness even when viewed in most oblique directions, and can exhibit an interference color of complex reflection.

The building plate 1 sequentially forms the undercoat layer 3, the intermediate layer 4, the bright clear layer 5, and the surface clear layer 6 on the surface of the building disc 2 having the uneven shape 211. It is done by The intermediate | middle layer 4 is formed by apply | coating the intermediate | middle coating material on the surface of the undercoating layer 3, and is formed by forming the uneven | corrugated surface according to the uneven shape 211. The bright clear layer 5 is formed by applying a first clear paint 51 containing a plurality of flaky bright materials 52 to the convex portions 411 on the uneven surface of the intermediate layer 4. In the bright clear layer 5, the plurality of flaky bright materials 52 are not settled and are disposed substantially parallel to the plane direction of the building disc 2. The surface clear layer 6 is formed over the entire surface of the intermediate layer 4 including the surface of the bright clear layer 5.

Interference color, building plate, building disc, undercoat, middle layer, bright clear layer, surface clear layer paint, uneven surface, bright material

Description

A construction plate and method for manufacturing the same

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional explanatory view showing a partially enlarged surface of a building plate in an embodiment;

Fig. 2 is a perspective view showing a building disc in the embodiment.

3 is an explanatory cross-sectional view showing a partially enlarged surface of a building disc in an embodiment.

Fig. 4 is a cross-sectional explanatory view showing a partially enlarged state in which a undercoat layer is formed on the surface of a building disc in the embodiment.

Fig. 5 is an explanatory cross-sectional view showing a partially enlarged state in which a middle layer is formed on the surface of the undercoat layer in the embodiment.

Fig. 6 is a cross-sectional explanatory view showing a partially enlarged state in which a bright clear layer is formed in the convex portion on the uneven surface of the intermediate layer in the embodiment.

7 is a partially enlarged plan view of the surface of the building plate in the embodiment;

8 is a cross-sectional explanatory view showing a partially enlarged surface of a building plate in the embodiment;

Brief description of symbols for the main parts of the drawings

1: building plate

2: architectural disc

3: undercoat

4: middle layer

5: bright clear layer

6: surface clear layer

31: undercoat

41: intermediate paint

51: the first clear paint

52: flaky bright material

61: second clear paint

201: surface

211: irregularities

212: convex portion

213: recess

[Patent Document 1] Japanese Patent Application Laid-Open No. 10-305546

[Patent Document 2] Japanese Patent Application Laid-Open No. 58-20786

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building plate formed by forming a clear layer containing a flaky bright material on an uneven surface of a building disc, and a manufacturing method thereof.

In a building plate constructed as an outer wall of a building, after forming a paint layer made of colored paint on the surface of the building disc, a clear layer made of clear paint is formed on the surface of the paint layer, and the paint layer is protected to I improve durability.

Then, by placing a bright material made of mica flakes, metal powder or the like on the inside of the clear layer or on the surface of the paint layer, an appearance having a glossiness (gloss) on the design surface of the building plate is formed. Doing.

For example, in patent document 1, an uneven | corrugated shape is formed in the surface of the base material which consists of a fiber board, and an undercoat film layer and a top coat film layer are formed sequentially in this whole surface of this uneven | corrugated shape, and after that The clear coating film to which the bright substance was added is applied only to the concave-convex surface of the concave-convex shape to form a clear coating film layer. Thereby, even if the uneven | corrugated pattern is formed in the surface of a base material, high brightness effect can be acquired with a small amount of bright substance.

Moreover, in patent document 2, mineral powder or metal powder is spread | sprayed or sprayed on the surface of the enamel paint apply | coated on the board | substrate, and after that, the cement board which can apply | coat a clear paint, and can maintain metal gloss over a long period Prepared.

However, in the said patent document 1, in the clear layer formed on the surface of a base material, no study is made regarding the arrangement | positioning state of a bright substance.

Moreover, also in the said patent document 2, mineral powder or metal powder arrange | positioned on the surface of an enamel paint settles under the clear paint, and no study is made about the arrangement state of mineral powder or metal powder.

Therefore, according to the said patent documents 1, 2, it is difficult to obtain sufficient brightness (gloss) by a brightness | luminance substance, mineral powder, etc.

Means to solve the problem

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and it is an object of the present invention to provide a building plate and a method of manufacturing the same, which can show brightness even in most oblique directions, and can exhibit interference colors of complex reflections.

The first invention includes a building disc having a surface having an uneven shape;

An undercoat layer formed by applying a undercoat paint to the surface of the building disc;

A middle layer formed by applying a middle coating material to the surface of the undercoat layer and forming a concave-convex surface according to the concave-convex shape;

A bright clear layer formed by applying a first clear paint containing a plurality of flaky bright materials to the convex portions on the uneven surface of the intermediate layer; And

A surface clear layer formed by applying a second clear paint to the entire surface of the intermediate layer including the surface of the bright clear layer,

The plurality of flake shaped bright materials are disposed in the bright clear layer without being settled, and are arranged substantially parallel to the plane direction of the building disc (claim 1).

In the building plate of this invention, the bright clear layer containing the said some flaky bright material is especially studied.

That is, in the building plate of the present invention, a first clear paint containing a plurality of flake-shaped bright materials is applied to the convex portions of the uneven surface of the intermediate layer formed on the surface of the building disc, thereby forming a bright clear layer. have. And most of the flake-shaped bright materials in this bright clear layer do not settle in the bottom part in a bright clear layer, but are located inside the bright clear layer. In addition, most of the plurality of flaky bright materials are disposed substantially parallel to the plane direction of the building disc.

And the light irradiated to the surface of a building plate passes through a surface clear layer, and is reflected by the flaky bright material in a brightness clear layer, and can show a glossiness. In addition, even if the light irradiated to the surface of the building plate is not reflected by the flaky bright material in the bright clear layer, the light passes through the surface clear layer and is reflected by the intermediate layer, thereby exhibiting a bright feeling.

As a result, the surface of the building plate is not affected by the angle of incident light thereto, so that the surface of the building plate can exhibit brightness even when viewed in most oblique directions.

In addition, since the flaky bright material does not settle in the bright clear layer and is disposed substantially parallel to the plane direction of the building disc, the light reflected by the intermediate layer passes through the flaky bright material and is emitted from the surface clear layer. have.

Thereby, the light reflected by the flaky bright material and the light reflected by the intermediate | middle layer interfere, and the interference color of a complex reflection can be shown.

Therefore, the surface of the building plate of the present invention can exhibit a feeling of brightness even when viewed from most inclined directions, and can exhibit an interference color of complex reflection.

2nd invention is a disk shaping | molding process of shape | molding the building disc provided with the surface which has an uneven | corrugated shape;

A undercoat layer forming step of applying a undercoat to the surface of the building disc to form a undercoat;

A middle layer forming step of applying a middle paint to the surface of the undercoat layer to form a middle layer having a concave-convex surface according to the concave-convex shape;

A bright clear layer forming step of forming a bright clear layer by applying a first clear paint having a viscosity of 95 to 120 KU and containing a plurality of flaky bright materials in the convex portions on the uneven surface of the intermediate layer; And

A surface clear layer forming step of applying a second clear paint to the entire surface of the intermediate layer including the surface of the clear clear layer to form a surface clear layer,

In the bright clear layer forming step, the first clear paint is roll-coated, so that the plurality of flaky bright materials are disposed in the bright clear layer to be substantially parallel to the plane direction of the building disc. It relates to a method of manufacturing a building plate to claim (claim 4).

In the manufacturing method of the building board of this invention, the said disk shaping | molding process, the undercoat layer forming process, and the middle layer forming process are performed, and the undercoat layer and the intermediate layer are formed in the surface of a building original board. At this time, the uneven surface corresponding to the uneven shape on the surface of the building plate is formed in the intermediate layer.

Subsequently, the bright clear layer forming step is performed to form a bright clear layer on the convex portion on the uneven surface of the intermediate layer. And this bright clear layer contains flaky bright material, and is formed by roll-coating the 1st clear paint whose viscosity is 95-120 KU in the convex part in the uneven surface of an intermediate | middle layer.

For this reason, in the bright clear layer, most of the plurality of flaky bright materials present in the first clear paint do not settle to the bottom portion, and are disposed inside the bright clear layer. In addition, most of the plurality of flaky bright materials are disposed substantially parallel to the plane direction of the building disc.

Thereafter, the surface clear layer forming step is performed to form a surface clear layer on the entire surface of the intermediate layer including the surface of the bright clear layer.

The surface of the building plate manufactured in this way is not affected by the angle of incident light with respect to the surface of the building plate as in the first invention, and can exhibit brightness even when viewed in most oblique directions, and exhibits complex reflection interference colors. Can be represented.

Therefore, according to the manufacturing method of the building board of this invention, even if it sees in the most inclination direction, it can show a brightness and can manufacture the building board which can show the interference color of a complex reflection easily.

Best Mode for Carrying Out the Invention

Preferred embodiment in above-mentioned 1st, 2nd invention is demonstrated.

In the said 1st invention, the value KU of the viscosity of a said 1st clear paint can be made into the value of the agitation resistance at the time of stirring the paint with a stoma viscometer (paddle viscometer). KU is sometimes called KU value or Krebs unit. The same applies to the second invention.

In the said 1st, 2nd invention, the said building board includes the inorganic building board which mass-produces, for example. In addition, as an inorganic building board, there exists a ceramic building board, for example.

As the flaky bright material, for example, a pearl pigment formed by forming a film of titanium dioxide on the surface of mica (mica) can be used. Titanium dioxide has a high refractive index, high light diffusivity, and translucency, and therefore has a property of easily forming multiple parallel lights.

In addition, as the flaky bright material, aluminum is deposited on glass flakes, which are flaky glass, mica, titanium coated mica (silver), white mica, synthetic mica, interference mica, titanium oxide added mica, and the like. have. Such flaky bright materials have a high specific gravity of about 4 to 5 specific gravity and tend to settle easily.

Moreover, the flaky bright material can be used whose particle diameter is 30-50 micrometers, and whose thickness is 1-2 micrometers.

In addition, content of the flaky bright material with respect to 1st clear paint whole quantity can be 3-7 mass%, for example.

Moreover, in the said 1st invention, it is preferable that the uneven | corrugated shape in the said building disc forms a some fine convex part, and the said bright clear layer is apply | coated to the fine convex part in the uneven surface of the said intermediate | middle layer. (Claim 2).

In this case, by fixing the flaky bright material to fine convex portions on the uneven surface, the amount of use of the flaky bright material can be reduced, and a building plate can be produced which is excellent in the brightness and can exhibit a complex reflection interference color. Moreover, the cost increase of a building plate can be suppressed by making the usage-amount of an expensive flaky bright material as small as possible.

Moreover, it is preferable that the viscosity of the said 1st clearing paint is 95-120 KU, and the said glossiness clear layer is formed by roll-coating the said 1st clearing paint (claim 3).

In this case, the building plate which is excellent in the said brightness | luminance and can exhibit the interference color of a complex reflection can be manufactured easily.

Moreover, in the said 1st, 2nd invention, when the viscosity of the said 1st clearing paint is less than 95 KU, the viscosity of a 1st clear layer will become low too much, and a flaky bright material will settle by the specific gravity, and to a bright clear layer It becomes difficult to arrange | position inside. On the other hand, when the viscosity of the first clear paint exceeds 120 KU, the viscosity of the first clear layer becomes too high, making it difficult to apply the first clear layer to the uneven surface of the intermediate layer.

Example

EMBODIMENT OF THE INVENTION Below, the Example which concerns on the building plate of this invention and its manufacturing method is demonstrated with drawing.

As shown in FIG. 1, the building plate 1 of the present example has a lower layer 3, a middle layer 4, and a bright clear layer 5 on the surface of the building plate 2 having an uneven shape 211. And the surface clear layer 6 are formed sequentially.

As shown in FIG. 4, the undercoat 3 is formed by applying a undercoat 31 to the surface of the building disc 2. As shown in FIG. 5, the intermediate layer 4 is formed by applying the intermediate paint 41 to the surface of the undercoat 3, and according to the uneven shape 211 on the surface of the building disc 2. It is made by forming an uneven surface.

As shown in FIG. 6, the bright clear layer 5 includes a first clear paint containing a plurality of flaky bright materials 52 in the convex portion 411 on the uneven surface of the intermediate layer 4 ( 51). And the some flaky bright material 52 in the bright clear layer 5 is arrange | positioned substantially parallel to the surface direction of the building original board 2, without settling.

As shown in FIG. 1, the surface clear layer 6 is formed by applying a second clear paint 61 to the entire surface of the intermediate layer 4 including the surface of the bright clear layer 5.

Below, the building plate 1 of this example and its manufacturing method are demonstrated in detail with FIG. 1 thru | or FIG.

As shown in Fig. 2, the building disc 2 is a ceramic industry building plate 1, which is mixed with cementitious raw materials (cement, silicic acid raw materials, etc.), wood raw materials (wood fibers, wood chips, etc.), additives, water and the like. To form a mixed raw material, which is sprayed onto a molding surface of a mold to dry-cure and molded.

And the surface of the building original board 2 has the design convex surface 21 formed by forming the uneven | corrugated shape 211 by the several fine convex part 212, and it recessed from this design convex surface 21, and the design convex surface It consists of a joint recess 22 which partitions 21. As shown in FIG.

In addition, the uneven | corrugated shape 211 in the building original board 2 is formed by mixing the several fine convex part 212 and the recessed part 213 mixedly. The protrusion height of the convex portion 212 with respect to the concave portion 213 is 0.1 to 1 mm.

The undercoat 31 is composed of a paint having a viscosity of 70 to 75 KU. The undercoat 3 is formed by applying the undercoat 31 with a coating amount of 10 to 12 g / chuck ² (109 to 131 g / m 2) by spray coating, It is formed as a joint color (the color of the joint recess 22).

The intermediate paint 41 is made of a paint having a viscosity of 80 to 85 KU. The intermediate layer 4 is formed by applying the intermediate coating 41 at a coating amount of 4 to 6 g / chuck ² (43 to 65 g / m 2) by roll coater coating, and is the convex design of the building disc 2. It is formed in the whole of the uneven | corrugated shape 211 in the surface 21. As shown in FIG.

The said 1st clear paint 51 consists of clear paint with a viscosity of 95-120 KU, and contains 5 mass% of flaky bright materials 52 with respect to the whole quantity. The bright clear layer 5 is formed by applying the first clear paint 51 at a coating amount of 4 to 6 g / chuck ² (43 to 65 g / m 2) by roll coater coating, and has an uneven shape 211. It is formed in the convex part 212 in the

The second clear paint 61 is made of a clear paint having a viscosity of 20 to 25 seconds (Iwata Cup NK2, 25 ° C). The surface clear layer 6 is formed by applying the second clear paint 61 at a coating amount of 4 to 8 g / chuck ² (43 to 87 g / m 2) by air spray coating, and the building disc 2 It is formed in the whole (design convex surface 21 and joint concave part 22) of the surface of the surface.

The flaky bright material 52 of this example is a pearl pigment formed by forming a film of titanium dioxide on the surface of mica (mica). By changing the film thickness of this pearl pigment, color development of various colors is possible. The plurality of flaky bright materials 52 of the present example can develop plural kinds of colors when light is irradiated because the film thickness is changed into plural kinds.

In addition, in order to form the intermediate | middle layer 4, the intermediate | middle coating material 41 is made by mixing a varnish and a pigment, and has an opaque color. The first clear paint 51 is made of a clear resin exhibiting a transparent appearance after curing, a plurality of flaky bright materials 52 and various additives. The 2nd clear paint 61 contains clear resin and various additives which show a transparent appearance after hardening.

In addition, the intermediate coating material 41 and the clear coating materials 51 and 61 hardly contain a lubrication remover, and can form a glossy coating film.

Next, the manufacturing method of the said building board 1 is demonstrated in detail.

When manufacturing the building board 1, first, as shown in FIG.2, FIG.3, the building board 2 is shape | molded as a disk forming process. The building disc 2 is provided with a design convex surface 21 and a joint concave portion 22, and a plurality of fine convex portions 212 and a concave portion 213 are formed on the surface of the design convex surface 21. The uneven shape 211 provided is formed.

Next, although illustration is abbreviate | omitted, as a sealer process, in order to make the building original board 2 and the undercoat layer 3 closely adhere before a lower layer forming process, the whole surface of the building original board 2 is sealed.

Subsequently, as shown in FIG. 4, as the undercoat layer forming step, the entire undercoat (the design convex surface 21 and the joint concave portion 22) of the surface of the building original plate 2 is sprayed with paint by spray coating. 31). At this time, the undercoat 31 is used a paint having a viscosity of 70 to 75 KU. And the undercoat 31 is apply | coated to the surface of the building original plate ^{2 by} the application amount of 10-12g / chuck ² , and the undercoat layer 3 is formed.

In addition, the undercoat layer 3 can blow the warm air of 80-110 degreeC for about 3 minutes, and can carry out jet drying and harden | cure.

Next, as shown in FIG. 5, the intermediate | middle coating material 41 is apply | coated to the surface of the undercoating layer 3 in the said design convex surface 21 by roll coater coating as a process of intermediate | middle layer formation. At this time, the coating material having a viscosity of 80 to 85 KU is used for the intermediate coating material 41. And the intermediate | middle coating material 41 is apply | coated to the surface of the intermediate | middle layer 4 by the application amount of 4-6 g / chuck ² , and the uneven surface which conformed to the uneven | corrugated shape 211 in the surface of the building disc 2 was provided. The intermediate layer 4 is formed.

Moreover, the intermediate | middle layer 4 can blow the warm air in 80-110 for about 3 minutes, and can make it dry and jet-dry, and harden.

Next, as shown in FIG. 6, as a bright clear layer formation process, the 1st clear paint 51 is apply | coated to the convex part 411 in the uneven surface of the intermediate | middle layer 4 by roll coater coating. At this time, 5 mass% of flake-shaped bright materials 52 are contained in the 1st clear paint 51, and the paint whose viscosity is 105-110 KU is used. And the 1st clear paint 51 is apply | coated to the convex part 411 in the uneven | corrugated surface of the intermediate | middle layer 4 by the application amount of 4-6 g / chuck ² , and the bright clear layer 5 is formed.

In addition, the rubber hardness of the roll surface of the roll coater which contacts the surface of the building original board 2 is made into 35-45 degree high, so that a roll surface may contact only the convex part 411 in the uneven surface of the intermediate layer 4. It was.

Since the viscosity of the said 1st clearing paint 51 is high as 105-110, in the brightness clear layer 5, the majority of the some flaky light igniter 52 which exists in the 1st clearing paint 51 is bottomed. It does not settle in a part, and is arrange | positioned inside the bright clear layer 5. In addition, most of the plurality of flaky bright materials 52 are disposed substantially parallel to the plane direction of the building disc 2.

Thus, the reason why most of the flaky bright materials 52 are arrange | positioned substantially parallel to the surface direction of the building original board 2 is considered as follows. That is, since the 1st clear paint 51 is high viscosity, the flaky bright material 52 is favored in the intermediate part of the 1st clear paint 51. FIG. And since the rubber hardness of the roll surface of a roll coater is high, the flaky bright material 52 in the 1st clear paint 51 will become parallel under the pressure of a roll coater, and the flaky bright material 52 of It is considered that most of them are disposed substantially parallel to the plane direction of the building original plate 2.

Thereafter, as shown in FIG. 1, as a surface clear layer forming process, the entire surface of the intermediate layer 4 including the surface of the bright clear layer 5 (the design convex surface 21 and the joint concave portion ( 22)), the second clear paint 61 is applied by spray coating. At this time, a clear paint having a viscosity of 20 to 25 seconds (Iwata Cup NK2, 25 ° C) is used for the second clear paint 61. And the 2nd clear paint 61 is apply | coated to the whole surface of the intermediate | middle layer 4 by the application amount of 4-8 g / chuck ² , and the surface clear layer 6 is formed.

Then, the bright clear layer 5 and the surface clear layer 6 can be blown off for about 3 minutes with a warm air of 80 to 110 ° C. to be jet-dried and cured. In this way, the building board 1 which forms the coating layer on the surface of the building original board 2 can be manufactured.

The building plate 1 manufactured in this way is arrange | positioned substantially parallel to the surface direction of the building original board 2, without making most the some flaky bright material 52 sediment in the brightness clear layer 5.

7 is a diagram schematically showing an enlarged surface of the building plate 1. In the same figure, the part in which the several flaky bright material 52 is arrange | positioned shows the convex part 112 in the uneven shape 111 of the surface of the building board 1, and the flaky bright material 52 The part where the is hardly arrange | positioned shows the recessed part 113 in the uneven shape 111 of the surface of the building plate 1.

And, as shown in FIG. 8, light L1 irradiated to the surface of the building board 1 passes through the surface clear layer 6, and the flaky bright material 52 in the brightness clear layer 5 is carried out. ), It can reflect the brightness. The light L2 irradiated onto the surface of the building plate 1 passes through the surface clear layer 6 even though the light L2 is not reflected by the flaky bright material 52 in the brightness clear layer 5. By reflecting by the layer 4 and passing through the surface clear layer 6 again, a glossiness may be exhibited.

Thereby, the surface of the building plate 1 is not influenced so much by the angle of incident light with respect to it, and can show a glossiness even if it sees in most inclination directions.

In addition, as shown in FIG. 8, the flaky bright material 52 does not settle in the bright clear layer 5, and is arrange | positioned in substantially parallel to the surface direction of the building original board 2, and thus the intermediate | middle layer The light L3 reflected by (4) may pass through the flaky bright material 52 and exit from the surface clear layer 6. This light L3 can be colored by reflecting the color of the intermediate layer 4.

As a result, the light reflected by the flaky bright material 52 and the light reflected by the intermediate layer 4 interfere with each other, and the building plate 1 can exhibit various colors as interference colors of complex reflections. have.

Thus, since the interference | reflection color of a complex reflection can be exhibited by the flaky bright material 52, it is not necessary to contain a coloring pigment in the 1st clear paint 51 which forms the bright clear layer 5. FIG. Therefore, the flaky bright material 52 does not sneak under the colored pigment and can exhibit a bright feeling more effectively.

By the way, the flake-shaped bright material 52 exhibiting brightness can effectively reflect light incident from an angle close to the right angle, but, for example, light incident at an angle of incidence of about 10 to 20 degrees is almost reflected. It has the drawback of not being able to.

Therefore, in order to compensate for the drawback of this flaky bright material 52, in the building board 1 of this example, the clear coating film is cleared with the bright clear layer 5 containing the flaky bright material 52, and surface clear. It formed by the clear layer of two layers of the layer (6). Thereby, the light of the incidence angle at which the flaky bright material 52 does not exhibit brightness is used to reflect the color of the middle layer 4 by the reflection by the middle layer 4 and the surface clear layer 6. It is to show the brightness of the reflected color.

In addition, in the conventional building board, in order to develop the color with a bright feeling with a flaky bright material, the pigment which shows various colors with respect to a flaky bright material was used. Therefore, in the conventional building board, the flaky bright material exhibited the color reflecting the color of the pigment.

On the other hand, in the building plate 1 of this example, the flake-shaped bright material 52 is developed using the color of the intermediate | middle layer 4, without using a pigment. That is, the light reflected by the intermediate layer 4 and exiting through the flaky bright material 52 can be colored by reflecting the color of the intermediate layer 4.

Therefore, in the building plate 1 of this example, a pigment becomes unnecessary and the color according to the color of the changed intermediate | middle layer 4 can be shown by changing suitably the color of the intermediate | middle layer 4 as needed.

Therefore, the surface of the building plate 1 of the present example can show the brightness even in the most inclined direction, and can exhibit the interference color of the complex reflection. And according to the manufacturing method of the said building board 1, the building board 1 which shows such an excellent effect can be manufactured easily.

In addition, the bright clear layer 5 was formed in the convex part 411 in the uneven | corrugated surface of the intermediate | middle layer 4, and was hardly formed in the recessed part 213. FIG. Therefore, the usage-amount of the expensive flaky bright material 52 can be reduced.

In addition, the whole surface of the building board 1 is covered by the surface clear layer 6, and this surface clear layer 6 can suppress the deterioration of the surface of the building board 1 effectively.

According to the building plate according to the present invention, even when viewed in the most inclined direction, it can exhibit a bright feeling, it can provide the effect of the interference color of a complex reflection.

Claims (4)

A building disc having a surface having an uneven shape; An undercoat layer formed by applying a undercoat paint to the surface of the building disc; A middle layer formed by applying a middle coating material to the surface of the undercoat layer and forming a concave-convex surface according to the concave-convex shape; A bright clear layer formed by applying a first clear paint containing a plurality of flaky bright materials to the convex portions on the uneven surface of the intermediate layer; And A surface clear layer formed by applying a second clear paint to the entire surface of the intermediate layer including the surface of the bright clear layer, The plurality of flake shaped bright materials are arranged in parallel with the plane direction of the building disc without sedimentation in the bright clear layer. 2. The building plate according to claim 1, wherein the concave-convex shape in the building disc is formed by forming a plurality of fine convex portions, and the bright clear layer is applied to the minute convex portions on the concave-convex surface of the intermediate layer. . The building board according to claim 1 or 2, wherein the viscosity of the first clear paint is 95 to 120 KU, and the bright clear layer is formed by roll coating the first clear paint. A disc forming step of molding a building disc having a surface having an uneven shape; A undercoat layer forming step of applying a undercoat to the surface of the building disc to form a undercoat; A middle layer forming step of applying a middle paint to the surface of the undercoat layer to form a middle layer having a concave-convex surface according to the concave-convex shape; A bright clear layer forming step of forming a bright clear layer by applying a first clear paint having a viscosity of 95 to 120 KU and containing a plurality of flaky bright materials in the convex portions on the uneven surface of the intermediate layer; And A surface clear layer forming step of applying a second clear paint to the entire surface of the intermediate layer including the surface of the clear clear layer to form a surface clear layer, In the said brilliant clear layer formation process, roll coating of the said 1st clear coating material arrange | positions in parallel with the surface direction of the said building disc, without settling the said plurality of flaky brilliant materials in the said brilliant clear layer. Method of manufacturing plate.

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