JP6910779B2 - Building board and its manufacturing method - Google Patents

Description

The present invention relates to a building board and a method for manufacturing the same.

Conventionally, ceramic siding boards and metal siding boards have been used as building boards constituting the outer and inner walls of buildings. A building board is usually a rectangular long board, and a plurality of building boards are laminated to form an outer wall or an inner wall of a building.

At that time, it is common practice to attach a member having an L-shaped cross section called a protruding corner (projecting corner panel) to the corner of the building. This protruding corner panel is often manufactured by cutting a building board in the vertical direction as described in Patent Document 1 in order to give a unified appearance to the wall surface.

By the way, the surface of a building board is often provided with various uneven shapes for the purpose of enhancing the design. For example, in Patent Document 2, a plurality of block patterns (grooves) are divided on the surface by vertical and horizontal joints (grooves). A building board having a convex block) is disclosed.

Japanese Unexamined Patent Publication No. 2000-234431 Japanese Unexamined Patent Publication No. 2005-177578

For example, when a building board as disclosed in Patent Document 2 is cut in the vertical direction to manufacture a panel for a protruding corner, a portion where the width of the block handle becomes extremely narrow may occur depending on the cutting position. Since the block handle with an extremely narrow width is raised in a narrow width state, the raised part is likely to be chipped during manufacturing, transportation, and storage, and there is a possibility of damage. Have.

Based on the above, when manufacturing a panel for outside corners by cutting a building board having a plurality of block patterns separated by vertical and horizontal joints (grooves) on the surface in the vertical direction, the block pattern has an extremely narrow width. It is decided by considering the cutting position so that it cannot be done. Therefore, it takes time and effort to cut the building board, and there is a problem that extra scraps are often generated.

The present invention has been made in view of the above problems, and when a building board is cut to manufacture a panel for a protruding corner, a block pattern having an extremely narrow width is unlikely to occur, and the building is excellent in design. It is an object of the present invention to provide a board and a method for manufacturing the board.

In order to achieve the above object, the building material board according to the first aspect of the present invention has a first region having a plurality of first recesses and a second region adjacent to the first region and having a plurality of second recesses. , The average depth of the plurality of first recesses in the first region is deeper than the average depth of the plurality of second recesses in the second region, and at least the first region. A first coating film is formed on a part of the surface of the base material, and the surface of the base material is exposed more in the second region than in the first region.

Here, the "average depth of the plurality of first recesses" and the "average depth of the plurality of second recesses" are defined from the depth of each recess in each region in each of the first region and the second region. The average value of the first recess and the average value of the second recess were calculated and used as the average depth of each recess. The average depth of the first recess and the second recess can be calculated from the design data. When there is no design data, for example, the depth of the recess in each region can be measured and calculated with a microscope, a depth gauge, or the like.

In addition, "the first coating film is formed on at least a part of the surface of the first region" means that the first coating film is formed only on a part of the surface of the first region, and the first It means that the first coating film is also formed on a part of the surface of the two regions.

In addition, "the surface of the base material is more exposed in the second region than in the first region" means that the surface of the base material is exposed on both the surface of the first region and the surface of the second region. It means that the area of the portion including the portion where the surface of the base material is exposed in the second region is larger than the area of the portion where the surface of the base material is exposed in the first region.

In the building board according to the first aspect of the present invention, the covering state of each region by the first coating film and the exposed state of the surface of the base material differ due to the difference in the average depth of the recesses in the first region and the second region. , The appearance of the first area and the second area are different. Since the first region and the second region having different appearances are adjacent to each other, the boundary between the first region and the second region is expressed. Due to this boundary, this building board can express a plurality of types of patterns without using vertical joints, and becomes a building board with excellent design.

Furthermore, since this building board can express a pattern without using vertical joints, an extremely narrow ridge is formed by the vertical joints regardless of where the cut is made in the vertical direction. There is no. Therefore, the problem that extra scraps are generated when cutting the building board is solved, and it is possible to efficiently manufacture the protruding corner panel using the building board. Further, the manufactured protruding corner panel is also hard to be chipped and damaged during its manufacturing, transportation, and storage.

Further, in the building board according to the second aspect of the present invention, the surface of the base material is formed by the second coating film.

According to the second aspect of the present invention, for example, when the color of the second coating film is different from that of the first coating film, the second coating film is exposed on the surface of the second region. The appearance of the second area is very different. Since the first region and the second region are adjacent to each other but the appearances are significantly different, the boundary between the first region and the second region becomes clearer, and the design has a plurality of types of patterns without using joints. It will be a building board with excellent properties.

Further, in the building board according to the third aspect of the present invention, the color of the first coating film and the color of the surface of the base material are different.

There are roughly two types of embodiments shown below in the embodiments in which the colors of the surfaces of the first coating film and the base material are different.

In the first form, a second coating film having a color different from that of the first coating film is formed on the surface of the base material.

On the other hand, in the second form, no coating film is formed on the surface of the base material, and the base material itself is colored with a color different from that of the first coating film.

According to the third aspect of the present invention, the first coating film is formed on a part of the surface of the first region, and the surface of the base material having a color different from that of the first coating film is formed on the surface of the second region. Since it is exposed, the appearances of the first region and the second region are further significantly different. Then, the boundary between the first region and the second region becomes clearer, and the building board has a plurality of types of patterns without using vertical joints and has excellent design.

Further, in the building board according to the fourth aspect of the present invention, both the first region and the second region have a rectangular shape in a plan view.

Here, "rectangular in plan view" means that the plan view includes a square as well as a rectangle, and a so-called block-like appearance can be expressed.

According to the fourth aspect of the present invention, a plurality of block-like first regions in which the average depth of the recesses and the exposed state of the base material are different, and in some cases, the colors of the first coating film and the surface of the base material are also different. Since the second region is composed side by side, it is possible to express a block tone even though no joints are used. Furthermore, since this building board expresses a pattern without using joints, it is possible to efficiently manufacture a panel for a protruding corner. Further, the manufactured protruding corner panel is also hard to be chipped and damaged during its manufacturing, transportation, and storage.

Further, in the building board according to the fifth aspect of the present invention, the first recess and the second recess extend in the same direction.

For example, in a horizontally long (horizontally long) building board, there is a form in which the first recess of the first region and the second recess of the second region extend in the horizontal direction.

In addition, "extending in the same direction" means that the building board extends in the same direction when viewed from a broad perspective, and when the building board is approached and viewed microscopically. The concept that both the first recess and the second recess are slightly meandering is also included in this concept of extending in the same direction.

According to the fifth aspect of the present invention, the plurality of first recesses in the first region and the plurality of second recesses in the second region extend in the same direction, thereby achieving a unified appearance and design. It becomes an excellent building board.

Further, since the plurality of first recesses in the first region and the plurality of second recesses in the second region extend in the same direction, for example, in a scraping step in coating for scraping paint (wiping coating, scraping coating). , The scraping portion of the scraping device can be inserted into the first recess and the second recess to smoothly scrape the paint.

Further, the building board according to the sixth aspect of the present invention is provided with a lateral groove in contact with the first region and the second region.

According to the sixth aspect of the present invention, the horizontal groove is in contact with each step composed of the first region and the second region arranged in the horizontal direction, and the upper and lower steps are divided by the horizontal groove. The horizontal joints are represented by horizontal grooves, and the vertical joints are represented by the contrast between the first region and the second region.

According to the sixth aspect of the present invention, a part of the boundary between the first region and the second region can be clearly expressed by the horizontal groove corresponding to the horizontal joint, and the vertical joint is the difference between the coating films in the first region and the second region. Because it can be expressed with, it becomes a building board with excellent design.

The building board according to the seventh aspect of the present invention has a form in which the first region and the second region are adjacent to each other above and below the lateral groove, in other words, the first region and the second region are vertically adjacent to each other with the lateral groove in between. It is something that is.

According to the seventh aspect of the present invention, the horizontal groove as the horizontal joint makes the upper and lower boundaries between the first region and the second region clear, and the vertical joint is represented by the difference between the coating films in the first region and the second region. Therefore, it becomes a building board with excellent design. In addition, since this building board expresses a pattern without using vertical joints, it is possible to efficiently manufacture a panel for a protruding corner. Further, the manufactured protruding corner panel is also hard to be chipped and damaged during its manufacturing, transportation, and storage.

Further, in the building board according to the eighth aspect of the present invention, both the first recess and the second recess extend along the longitudinal direction of the lateral groove.

According to the eighth aspect of the present invention, the plurality of first recesses in the first region and the plurality of second recesses in the second region extend in the longitudinal direction of the lateral groove, thereby achieving a unified appearance. It will be a building board with excellent design. In addition, since this building board does not use vertical joints and expresses the boundary between the first region and the second region by the contrast between the first region and the second region, it is possible to realize efficient manufacturing of the projected corner panel. .. Further, the manufactured protruding corner panel is also hard to be chipped and damaged during its manufacturing, transportation, and storage.

Further, in the building board according to the ninth aspect of the present invention, the building board has a longitudinal direction, is rectangular in a plan view, and the lateral groove extends along the longitudinal direction of the building board.

According to the ninth aspect of the present invention, the building board is rectangular in a plan view, the first and second regions are, for example, rectangular in a plan view, and the lateral groove extends in the longitudinal direction of the rectangular building board. , The first region and the second region in contact with the lateral groove will be arranged in the longitudinal direction of the building board. Since the first region and the second region of the plan view rectangle are arranged in the longitudinal direction of the building board, a sense of unity in appearance can be achieved. Further, a clear horizontal groove extends in the longitudinal direction, and the vertical joint is expressed by the difference between the coating films in the first region and the second region, so that the building board has excellent design.

In addition, when cutting a building board in the vertical direction (direction parallel to the short side direction of a rectangle) to produce a panel for outside corners, the building board does not have vertical grooves (vertical joints) and extends in the longitudinal direction. Since only the lateral groove is present, an extremely narrow ridge is not formed on the protruding corner panel depending on the cutting position. Therefore, efficient manufacturing of the projected corner panel can be realized. Further, the manufactured protruding corner panel is also hard to be chipped and damaged during its manufacturing, transportation, and storage.

Further, in the building board according to the tenth aspect of the present invention, a first convex portion is formed between the first concave portions, a second convex portion is formed between the second concave portions, and the first region and the said The second region includes a plurality of the first convex portions and a plurality of the second convex portions, and the heights of the first convex portion and the second convex portion are the same.

Here, "the same height" means that the height from a certain standard is the same, and for example, the distance from the back surface of the building board is the same.

According to the tenth aspect of the present invention, the heights of the plurality of first convex portions of the first region and the plurality of second convex portions of the second region are the same, so that a sense of unity in appearance can be achieved. It will be a building board with excellent design.

Further, since both the first region and the second region are provided with a plurality of convex portions, the scraping portion of the scraping device is raised in the scraping process in, for example, painting (wiping coating, scraping coating) for scraping paint. The paint can be smoothly scraped off by entering the concave portion with the same convex portion as a reference.

In addition, the eleventh aspect of the present invention is a method for manufacturing a building board, in which a first region having a plurality of first recesses and a plurality of second recesses adjacent to the first recess are formed. The first step of preparing a substrate having a second region, wherein the average depth of the plurality of first recesses of the first region is deeper than the average depth of the plurality of second recesses of the second region. Then, the paint for the first coating film was applied to the surfaces of the first region and the second region, and the paint for the first coating film was applied to the first region and the second region before the coating film was cured. By scraping off the paint for the first coating film, the first coating film is formed on at least a part of the surface of the first region, and the surface of the base material is formed in the second region rather than the first region. It includes a second step of exposing more.

In the production method of the eleventh aspect of the present invention, wiping coating is adopted in the second step, and a part of the coating film for the first coating film applied to the first region and the first coating film applied to the second region. (I) All or part of the coating film coating material is scraped off by a scraping portion of the scraping device to form a portion where the first coating film is formed and a portion where the base material is exposed.

Here, "forming the first coating film on at least a part of the surface of the first region" means that the first coating film is formed only on the surface of the first region and the surface of the second region. Also includes the form in which the first coating film is formed.

Further, "exposing the surface of the base material more in the second region than in the first region" means that the exposed area of the surface of the base material is wider in the second region than in the first region. ..

Further, as the scraping portion, for example, a rotating roll or a brush on which an elastic material such as a sponge is arranged on the surface can be mentioned.

According to the eleventh aspect of the present invention, in the scraping of the paint for the first coating film in the second step, the first coating film is used due to the difference in the average depth of the recesses in the first region and the second region. It is possible to form a first region and a second region in which the coating state and the exposed state of the surface of the base material are different. The appearance of the first region and the second region is different due to the difference in the coating state by the first coating film and the exposed state of the surface of the base material. Since the first region and the second region, which have different appearances, are adjacent to each other, the boundary between the first region and the second region is clear, and a design capable of expressing multiple types of patterns without using vertical joints. It is possible to manufacture building boards with excellent properties. Further, since this building board can express a pattern without using vertical joints, no matter where the vertical joints are cut, an extremely narrow ridge portion due to the vertical joints is not formed. Therefore, the problem that extra scraps are generated when cutting the building board is solved, and it is possible to efficiently manufacture the protruding corner panel using the building board. Further, the manufactured protruding corner panel is also hard to be chipped and damaged during its manufacturing, transportation, and storage.

Further, in the method for manufacturing a building board according to the twelfth aspect of the present invention, the surface of the base material is formed by a second coating film.

As a method of forming the second coating film on the surface of the base material, for example, a method of applying the paint for the second coating film to the entire base material and curing it before performing the second step, and performing the second step. A method of applying the second coating film paint to the first region and the second region before and curing the method, and a method of applying the second coating film paint only to the second region and curing the second region before performing the second step. And so on.

According to the twelfth aspect of the present invention, a first coating film is formed on a part of the surface of the first region, and a second coating film different from the first coating film is formed on the surface of the second region. Exposed building boards can be manufactured. In this building board, for example, when the color of the second coating film is different from that of the first coating film, the second coating film is exposed on the surface of the second region, so that the appearance of the first region and the second region is different. to differ greatly. Since the first region and the second region are adjacent to each other but the appearances are significantly different, the boundary between the first region and the second region becomes clearer, and the design has a plurality of types of patterns without using joints. It will be a building board with excellent properties.

Further, since this building board can express a pattern without using vertical joints, it is possible to efficiently manufacture a panel for outside corners using the building board. Further, the manufactured protruding corner panel is also hard to be chipped and damaged during its manufacturing, transportation, and storage.

Further, in the method for manufacturing a building board according to the thirteenth aspect of the present invention, the base material is rectangular in a plan view having a longitudinal direction, and the first recess and the second recess extend in the longitudinal direction. In the scraping of the paint in the second step, the scraping portion of the scraping device is arranged so as to intersect the longitudinal direction of the base material and is brought into contact with the base material, and the scraping portion is contacted. This is done by moving the base material relatively.

Here, "moving the base material relative to the scraping portion" means a form in which one of the scraping portion and the base material is not moved and only the other is moved, or the scraping portion. There is a form in which the base material is moved while changing both moving directions and moving speeds. For example, in the latter case, there is a form in which both are moved in the same direction at different speeds and a form in which both are moved in opposite directions.

According to the thirteenth aspect of the present invention, the paint can be smoothly scraped off in the second step. As a result, the exposed portion of the base material becomes clear, so that the appearances of the first region and the second region can be made more different, and there are multiple types of patterns without using vertical joints, which is excellent in design. It is possible to manufacture new building boards.

Further, in the method for manufacturing a building board according to the fourteenth aspect of the present invention, the scraped portion is rotatable, and the scraped portion is rotated in the direction opposite to the moving direction of the base material to apply paint. It is something to scrape.

According to the fourteenth aspect of the present invention, the scraped portion rotates in the direction opposite to the moving direction of the base material, so that the scraped portion easily enters the first recess and the second recess of the base material. , Efficient scraping of paint can be performed, and efficient film formation of the first coating film can be performed.

According to the building board of the present invention and the manufacturing method thereof, joints are provided by adjacently providing a first region and a second region whose appearance differs depending on the difference between the coating state by the first coating film and the exposed state of the base material. It is a building board with excellent design that expresses the boundary between the first area and the second area without using. Since vertical joints can be expressed by this boundary, no matter where part of this building board is cut for manufacturing a panel for outside corners, an extremely narrow ridge is formed by the vertical joints like a conventional building board. Will not be done. Therefore, it is possible to efficiently manufacture the projected corner panel using the building board, and the manufactured protruding corner panel is not easily chipped or damaged during its manufacturing, transportation, and storage, and the building board is cut. At this time, there is no problem that extra scraps are generated.

It is a top view of Embodiment 1 of the building board of this invention. FIG. 2 is a sectional view taken along line II-II of FIG. It is sectional drawing of Embodiment 2 of a building board. It is a top view of Embodiment 3 of a building board. It is a top view of Embodiment 4 of a building board. (A) is a schematic view explaining a method of manufacturing a building board, and (b) is a cross-sectional view taken along the line bb of (a).

Hereinafter, embodiments 1 to 4 of the building board of the present invention will be described with reference to the drawings.

(Embodiment 1 of Building Board)
FIG. 1 is a plan view of the first embodiment of the building board of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG.

The illustrated building board 100 is composed of a base material 10 and a first coating film 20. The surface of the base material 10 is formed by the second coating film 10c. The building board 100 shown in the drawing has, for example, a length of about 1.8 m to about 3 m in the longitudinal direction L and a length of about 0.5 m in the lateral direction orthogonal to the longitudinal direction L, and is in the lateral direction. By cutting the building board 100 into a plurality of panels along the above, a panel for protruding corners is manufactured.

The base material 10 includes a first region A having a plurality of first recesses 10a and a second region B adjacent to the first region A and having a plurality of second recesses 10b. The depth of the first recess 10a is t1, and the depth of the second recess 10b is t2.

The average depth of the first recess 10a and the average depth of the second recess 10b are the average value of the first recess 10a and the average value of the first recess 10a from the depth t1 of each first recess 10a and the depth t2 of each second recess 10b, respectively. The average value of the recesses 10b is calculated and used as the depth of each recess. The average depth of the first recess 10a and the second recess 10b can be calculated from the design data, but if there is no design data, about ten arbitrary recesses in each region can be measured with a microscope, depth gauge, etc. Can be measured and calculated with.

In the building board 100, the average depth of the first recess 10a in the first region A is deeper than the average depth of the second recess 10b in the second region B. As an example, the average depth of the first recess 10a can be set to about 1.5 mm, and the average depth of the second recess 10b can be set to about 0.5 mm.

The surface P of the base material 10 is formed by the second coating film 10c, and the second coating film 10c covers the entire surface of the base material 10.

Then, in the second region B, the second coating film 10c, which is the surface of the base material 10, is exposed on the surfaces of the plurality of second recesses 10b.

Further, the second region B has a plurality of second convex portions 60B. The second convex portion 60B is formed between the second concave portions 10b. On the surface of the second convex portion 60B, the second coating film 10c, which is the surface of the base material 10, is exposed.

On the other hand, in the first region A, the first coating film 20 is formed on the surfaces of the plurality of first recesses 10a. More specifically, the first coating film 20 is formed on the second coating film 10c, which is the surface P of the base material 10.

Further, the first region A has a plurality of first convex portions 50B. The first convex portion 50B is formed between the first concave portions 10a. On the surface of the first convex portion 50B, the second coating film 10c, which is the surface P of the base material 10, is exposed.

As shown in FIG. 2, in the building board 100, the first region A is composed of the first concave portion 10a and the first convex portion 50B, and the second region B is composed of the second concave portion 10b and the second convex portion 60B.

Here, the first coating film 20 is formed on the surface of the first concave portion 10a of the first region A, and the surface P of the base material 10 is on the surface of the first convex portion 50B of the first region A. The two coating films 10c are exposed. Therefore, the surface of the first region A has a portion where the first coating film 20 is formed and a portion where the second coating film 10c is exposed.

On the other hand, the second coating film 10c, which is the surface P of the base material 10, is exposed on the surface of the second concave portion 10b and the surface of the second convex portion 60B of the second region B. Therefore, the surface of the second region B has a portion where the second coating film 10c is exposed. Although the second region B does not have the first coating film 20 in FIG. 2, a small amount of the first coating film 20 may be formed in a part of the second recess 10b.

In the first region A, the second coating film 10c is exposed in the first convex portion 50B, whereas in the second region B, the second coating film 10c is exposed in the second concave portion 10b and the first convex portion 60B. is doing. Therefore, the exposure of the second coating film 10c, which is the surface P of the base material 10, is larger in the second region B than in the first region A.

The appearance of the first region A and the second region B is different because the coating state of the first coating film 20 and the exposed state of the base material 10 are different due to the difference in the average depth of each recess. Since the first region A and the second region B having different appearances are adjacent to each other, the boundary between the first region A and the second region B is expressed. As a result, the building board 100 can express a plurality of types of patterns without using vertical joints.

Further, as shown in FIG. 1, both the first region A and the second region B have the same dimensions and are rectangular in a plan view. In the illustrated example, the first region A and the second region B alternate vertically and horizontally. Is located in.

Since a plurality of block-like first regions A and second regions B having different average depths of the recesses and the exposed state of the base material 10 are arranged side by side in the vertical and horizontal directions, the block-like joints are not used. The pattern is expressed.

Further, as shown in FIG. 1, the building board 100 is rectangular in a plan view, and both the first recess 10a in the first region A and the second recess 10b in the second region B are the same as the longitudinal direction L of the building board 100. It extends in the direction.

Further, the height of the first convex portion 50B of the first region A (distance s from the back surface of the base material 10) and the height of the second convex portion 60B of the second region B (distance from the back surface of the base material 10). s) are the same.

Since the heights of the plurality of first convex portions 50B of the first region A and the plurality of second convex portions 60B of the second region B are the same, a sense of unity in appearance can be achieved.

Here, for example, a cement plate, a metal plate, a resin plate, or the like in which the surface P is formed by the second coating film 10c can be applied to the base material 10.

The first coating film 20 and the second coating film 10c are formed by using a paint composed of a resin and a pigment. Here, as the resin, for example, acrylic resin, acrylic silicon resin, silicon resin, fluororesin, polyurethane resin, epoxy resin and the like can be applied, and as the pigment, for example, calcium carbonate, clay, titanium oxide, carbon, valve handle, yellow and the like can be applied. Lead, iron oxide, ultramarine, phthalocyanine blue, cobalt, chromium oxide, etc. can be applied. Further, if necessary, an antifoaming agent, a pH adjuster, a light stabilizer, an ultraviolet absorber and the like may be contained.

In the building board 100, the second coating film 10c, which is the surface P of the base material 10, is exposed in the second region B, and the first coating film 20 is exposed on the surface in the first region A. By changing the color of the film, the change in color between the first region A and the second region B can be made more remarkable.

As described above, in the building board 100, the rectangular (block-like) first region A and the second region B are arranged vertically and horizontally in the plan view, and the first recesses 10a and the second recesses 10b of both regions A and B are arranged. Since the average depths are different from each other, the coating state of each region by the first coating film 20 and the exposed state of the surface of the base material are different, so that the appearances of the first region A and the second region B are different. Since the first region A and the second region B, which have different appearances, are adjacent to each other, the boundary between the first region A and the second region B is expressed, and a block-like pattern is expressed without using vertical joints. It is a building board 100 with excellent design.

Since the colors of both regions A and B are also different, the boundary between regions A and B can be expressed without using vertical joints, and a design effect with different color tones is produced.

Further, in the areas A and B, both the first recess 10a and the second recess 10b extend in the same direction as the longitudinal direction L of the building board 100, so that an overall sense of unity can be obtained. The design of the board 100 is enhanced.

Further, the building board 100 does not have vertical grooves (vertical joints of the conventional building board), and has a configuration in which rectangular first regions A and second regions B are alternately arranged vertically and horizontally in a plan view. Is only. Therefore, when the building board 100 is cut along the lateral direction orthogonal to the longitudinal direction L, for example, to manufacture the projected corner panel, no matter which part of the building board 100 is cut, the conventional vertical joint is used. It is possible to efficiently manufacture a protruding corner panel using the building board 100 without forming an extremely narrow raised portion due to vertical joints as in the building board having the above. Further, the manufactured protruding corner panel is also hard to be chipped and damaged during its manufacturing, transportation, and storage, and there cannot be a problem that extra scraps are generated when cutting the building board 100.

Although not shown, the first coating film 20 may be further provided on a part of the surface of the second recess 10b in the second region B. Even in this form, since the second coating film 10c, which is the surface P of the base material 10, is exposed in the second recess 10b, the first region A and the second region B have different color tones, and the vertical joints are formed. The effect of expressing multiple types of patterns without using it and the effect of realizing efficient production of protruding corner panels are achieved.

(Embodiment 2 of building board)
FIG. 3 is a cross-sectional view of the second embodiment of the building board. The illustrated building board 100A also has the first region A and the second region B arranged alternately in the vertical and horizontal directions, and is composed of the base material 10A and the first coating film 20A. However, it differs from the building board 100 in that no coating film is present on the surface P'of the base material 10A.

The base material 10A includes a first region A having a plurality of first recesses 10a and a second region B adjacent to the first region A and having a plurality of second recesses 10b. The depth of the first recess 10a is t1', and the depth of the second recess 10b is t2'.

In the building board 100A, the average depth of the first recess 10a in the first region A is deeper than the average depth of the second recess 10b in the second region B. Both the first recess 10a and the second recess 10b extend in the same direction as the longitudinal direction of the building board 100A.

Then, in the second region B, the surface P'of the base material 10A is exposed on the surfaces of the plurality of second recesses 10b.

Further, the second region B has a plurality of second convex portions 60B formed between the second concave portions 10b. The surface P'of the base material 10A is exposed on the surface of the second convex portion 60B.

On the other hand, in the first region A, the first coating film 20A is formed on the surfaces of the plurality of first recesses 10a.

Further, the first region A has a plurality of first convex portions 50B formed between the first concave portions 10a. On the surface of the first convex portion 50B, the surface P'of the base material 10A having no coating film is exposed.

As shown in FIG. 3, in the building board 100A, the first region A is composed of the first concave portion 10a and the first convex portion 50B, and the second region B is composed of the second concave portion 10b and the second convex portion 60B.

Here, the first coating film 20A is formed on the surface of the first concave portion 10a of the first region A, and the surface of the first convex portion 50B of the first region A does not have a coating film. The surface P'is exposed. Therefore, the surface of the first region A has a portion where the first coating film 20A is formed and a portion where the surface P'of the base material 10A having no coating film is exposed.

On the other hand, the surface P'of the base material 10A having no coating film is exposed on the surface of the second concave portion 10b and the surface of the second convex portion 60B of the second region B. Therefore, the surface of the second region B has a portion where the surface P'of the base material 10A having no coating film is exposed.

In the first region A, the surface P'of the base material 10A having no coating film is exposed in the first convex portion 50B, whereas in the second region B, the second concave portion 10b and the second convex portion 60B are exposed. The base material 10A that does not have a coating film is exposed. Therefore, the exposure of the surface P'of the base material 10A without the coating film is larger in the second region B than in the first region A.

The appearances of the first region A and the second region B are different because the coating state of the first coating film 20A and the exposed state of the base material 10A are different due to the difference in the average depth of the recesses. Since the first region A and the second region B having different appearances are adjacent to each other, the boundary between the first region A and the second region B is expressed. As a result, the building board 100A can express a plurality of types of patterns without using vertical joints.

Further, in the building board 100A, the first coating film 20A is exposed in the first recess 10a of the first region A, and the base material 10A having no coating film is exposed in the second recess 10b of the second region B. Therefore, by the difference between the color of the base material 10A and the color of the first coating film 20A, the boundary between the first region A and the second region B can be expressed without using vertical joints, and the design effect due to the different color tones is produced. NS.

A cement plate, a metal plate, a resin plate, or the like can be applied to the base material 10A. When the cement plate is applied to the base material 10A, the base material 10A is usually gray, but the color of the base material 10A can be changed by adding a pigment in the manufacturing process of the base material 10A. For example, a black base material 10A can be obtained by containing a black pigment such as carbon black, acetylene black, or graphite. Further, for example, a yellow base material 10A can be obtained by containing a yellow pigment such as chrome yellow, zinc yellow, barium chromate, cadmium yellow, and yellow iron oxide.

Further, in the building board 100A, the heights (distance from the back surface of the base material 10A) of the plurality of first convex portions 50B of the first region A and the plurality of second convex portions 60B of the second region B are the same. As a result, a sense of unity in appearance is achieved.

Further, although not shown, the first region A and the second region B both have the same dimensions and have a rectangular shape in a plan view, and the first region A and the second region B are alternately arranged vertically and horizontally. That is, the building board 100A is rectangular in a plan view, and the first recess 10a of the first region A and the second recess 10b of the second region B both extend in the same direction as the longitudinal direction L of the building board. It is the same as the building board 100 and has the same effect.

As described above, since the building board 100A also expresses the pattern pattern without using the vertical joints, no matter where the vertical joints are cut, an extremely narrow ridge portion due to the vertical joints is not formed. Therefore, the problem that extra scraps are generated when cutting the building board is solved, and it is possible to efficiently manufacture the protruding corner panel using the building board. Further, the manufactured protruding corner panel is also hard to be chipped and damaged during its manufacturing, transportation, and storage.

(Embodiments 3 and 4 of building boards)
4 and 5 are plan views of the third and fourth embodiments of the building board, respectively. Both the building board 100B shown in FIG. 4 and the building board 100C shown in FIG. 5 are common in that the first area A and the second area B are provided with a horizontal groove that vertically separates one step in which the first area A and the second area B are arranged in the horizontal direction.

Specifically, in the building board 100B, each step is divided in the vertical direction by a single horizontal groove 70 extending along the longitudinal direction L, and the areas A and B can be arranged in the horizontal direction. Each step is sandwiched between upper and lower horizontal grooves 70.

On the other hand, the building board 100C has different types such as a lateral groove 70A formed by three lateral grooves extending along the longitudinal direction L and a lateral groove 70B formed by two lateral grooves having widths in the vertical direction. By using the lateral grooves 70A and 70B alone or in combination, a unique design is created.

Both the building boards 100B and 100C are the same as the building board 100 except that they have a lateral groove.

For both the building boards 100B and 100C, the horizontal grooves 70, 70A, and 70B extending along the longitudinal direction L of the building boards 100B and 100C divide each step formed by arranging the rectangular regions A and B in the plan view in the horizontal direction. Therefore, a part of the boundary between the first region A and the second region B can be clearly expressed by the lateral grooves 70, 70A, 70B corresponding to the horizontal joints, and the vertical joints of the first region A and the second region B. Since it can be expressed by the difference in the coating film, the building boards 100B and 100C have excellent design.

Further, the first recesses 50A and the second recesses 60A and the lateral grooves 70, 70A and 70B of each of the areas A and B extend in the same direction, so that the appearance is unified and the architecture is excellent in design. The plates are 100B and 100C.

It should be noted that even in the building boards 100B and 100C, since the vertical grooves are not provided, various problems cannot occur when the vertical grooves are provided as described above.

Further, since the building boards 100B and 100C are the same as the building board 100 except that they have a lateral groove, the same effect as that of the building board 100 can be obtained.

(Embodiment 1 of the method for manufacturing a building board)
Next, the first embodiment of the method for manufacturing a building board will be described with reference to FIG. This manufacturing method is a manufacturing method of the building board 100.

First, a first region A having a plurality of first concave portions 10a and a first convex portion 50B, and a second region B adjacent to the first region A and having a plurality of second concave portions 10b and a second convex portion 60B are provided. A base material 10 having an average depth of the first recess 10a deeper than the average depth of the second recess 10b is prepared (see FIG. 2, first step).

More specifically, a template in which the pattern to be produced and the unevenness are inverted is prepared, and a raw material (for example, cement, fly ash, mica, flakes, etc.) is sprayed on the template to form a mat. Finally, press this mat and heat it to cure. Then, in the present embodiment, the base material 10 having the second coating film 10c on the surface is manufactured by applying the coating material for the second coating film on the entire surface and curing the coating film.

Next, the paint for the first coating film is applied to the entire surface of the base material 10, and in this state, the base material 10 is placed in a scraping device provided with rotating rolls R1 and R2 up and down as shown in FIG. 6A. (X1 direction).

Here, an elastic material E such as a sponge is disposed on the surface of the upper rotating roll R1 which is a scraping portion, and the rotating roll R1 rotates in the direction opposite to the moving direction of the base material 10 (X2 direction). ing.

In the process of passing the base material 10 between the upper and lower rotating rolls R1 and R2 before the coating film for the first coating film is cured, as shown in FIG. 6B, the first recess 10a and the first recess 10a of the first region A The elastic material E enters the second recess 10b of the second region B (in the X3 direction), and a part of the paint for the first coating film applied to the first region A and the first coating film applied to the second region B. All of the paint is scraped off.

By elapse of a predetermined time or drying in a drying facility, a part of the paint for the first coating film remaining without being scraped off in the first region A is cured to form the first coating film 20. As a result, the first coating film 20 is formed in the first concave portion 10a, and the second coating film 10c, which is the surface of the base material 10, is formed in the second concave portion 10b, the first convex portion 50B and the second convex portion 60B. Exposed, the building board 100 according to the first embodiment is manufactured (second step).

It should be noted that the third and fourth embodiments of the building board can also be manufactured in the same manner except that the base material having the lateral groove is prepared in the first step.

Further, as described above in the first embodiment of the building board, it is possible to scrape off not all the paint for the first coating film applied to the second recess 10b of the second region B, but a part of it.

As described above, according to the manufacturing method of the first embodiment, the first region A and the second region B have different coating states of the first coating film 20 and exposed states of the base material 10 due to the difference in the average depth of the recesses. Can be formed. The appearance of the first region A and the second region B is different because the coating state of the first coating film 20 and the exposed state of the base material 10 are different. Since the first region A and the second region B having different appearances are adjacent to each other, the boundary between the first region A and the second region B is expressed. As a result, the building board 100 can express a plurality of types of patterns without using vertical joints.

Further, since the building board 100 manufactured by the manufacturing method of the first embodiment expresses a pattern without using vertical joints, a raised portion having an extremely narrow width due to the vertical joints can be cut at any part. Is never formed. Therefore, the problem that extra scraps are generated when cutting the building board is solved, and it is possible to efficiently manufacture the protruding corner panel using the building board. Further, the manufactured protruding corner panel is also hard to be chipped and damaged during its manufacturing, transportation, and storage.

(Embodiment 2 of the method for manufacturing a building board)
Next, the second embodiment of the method for manufacturing a building board will be described. This manufacturing method is a manufacturing method of the building board 100A.

First, a first region A having a plurality of first concave portions 10a and a first convex portion 50B, a second region B having a plurality of second concave portions 10b and a second convex portion 60B, and an average depth of the first concave portions 10a are provided. The base material 10A, which is deeper than the average depth of the second recess 10b, is prepared (see FIG. 3, first step). In the present embodiment, the second coating film is not provided on the surface of the base material 10A.

The second step thereafter is the same as in the first embodiment of the method for manufacturing a building board.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and there are design changes and the like within a range that does not deviate from the gist of the present invention. Also, they are included in the present invention. For example, the building board of the illustrated example is composed of a first region and a second region having different depths of the recesses, but each recess in the first region and the second region and a third region having a different depth are formed. Further prepared, the average depth of the recesses in the first region is about 1.5 mm, the average depth of the recesses in the second region is about 1.0 mm, and the average depth of the recesses in the third region is about 0.5 mm. The building board of is also included in the present invention. Further, for example, if the average depth of the first recess is deeper than the average depth of the second recess, the first region includes a recess shallower than the average depth of the second recess as one of the first recesses. You can also do it.

10,10A ... base material, 10a ... first concave portion, 10b ... second concave portion, 10c ... coating film (intermediate coating film, second coating film), 20, 20A ... first coating film, 50B ... first convex portion, 60B ... Second convex portion, 70, 70A, 70B ... Horizontal groove, 100, 100A, 100B, 100C ... Building board, A ... First region (region), B ... Second region (region), P, P'... Group Material surface (surface), R1, R2 ... rotating roller, E ... elastic material

Claims (14)

It is rectangular in plan view
A first region with a plurality of first recesses,
A base material comprising a second region adjacent to the first region and having a plurality of second recesses.
The average depth of the plurality of first recesses in the first region is deeper than the average depth of the plurality of second recesses in the second region.
Both the first recess in the first region and the second recess in the second region extend in the longitudinal direction of the base material.
A first coating film is formed on at least a part of the surface of the base material in the first region.
The surface of the base material is more exposed in the second region than in the first region .
A building board in which the boundary between the first region and the second region is expressed by the difference in appearance between the first region and the second region. The difference in appearance between the first region and the second region is due to the difference between the coating state of the first coating film and the exposed state of the surface of the base material in the first region and the second region. The building board described in. The building board according to claim 1 or 2, wherein the surface of the base material is formed by a second coating film. The building board according to any one of claims 1 to 3, wherein the color of the first coating film and the color of the surface of the base material are different. The building board according to any one of claims 1 to 4, wherein both the first region and the second region have a rectangular shape in a plan view. The building board according to claim 5 , further comprising a lateral groove in contact with the first region and the second region. The building board according to claim 6, wherein the first region and the second region are vertically adjacent to each other with the lateral groove interposed therebetween. The building board according to claim 6 or 7, wherein both the first recess and the second recess extend along the longitudinal direction of the lateral groove. The building board is rectangular in a plan view having a longitudinal direction, and is rectangular.
The building board according to any one of claims 6 to 8, wherein the lateral groove extends along the longitudinal direction of the building board. A first convex portion is formed between the first concave portions, a second convex portion is formed between the second concave portions, and the first region and the second region are a plurality of the first convex portions and a plurality, respectively. It has the second convex part of
The building board according to any one of claims 1 to 9, wherein the height of the first convex portion and the height of the second convex portion are the same. A plurality of first regions of the first region, which are rectangular in a plan view and include a first region having a plurality of first recesses and a second region adjacent to the first region and having a plurality of second recesses. average depth of one recess, the second region deeply than the plurality of the average depth of the second recess of the second recess both said substrate and said first recess of said first region said second region The first step in preparing the substrate extending in the longitudinal direction of
The first coating film coating film is applied to the surfaces of the first region and the second coating film, and the first coating film is applied to the first region and the second coating film before the first coating film coating film is cured. By scraping off the paint film for coating film, the first coating film is formed on at least a part of the surface of the first region, and the surface of the base material is exposed more in the second region than in the first region. A method for manufacturing a building board, comprising: a second step of expressing a boundary between the first region and the second region by a difference in appearance between the first region and the second region. 11. The difference in appearance between the first region and the second region is due to the difference between the coating state of the first coating film and the exposed state of the surface of the base material in the first region and the second region. The manufacturing method of the building board described in. The method for manufacturing a building board according to claim 11 or 12, wherein the surface of the base material is formed by a second coating film. In the scraping of the paint in the second step, the scraping portion of the scraping device is arranged so as to intersect the longitudinal direction of the base material and is brought into contact with the base material, and the scraping portion is contacted. This is done by moving the base material relatively.
The scraper is rotatable and
The method for manufacturing a building board according to any one of claims 11 to 13, wherein the scraping portion is rotated in the direction opposite to the moving direction of the base material to scrape the paint.

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