JP2001046950A - Roller coating method and panel for building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To apply multicolor coating with irregular and complicated color and tone by color mixing on the surface of a material to be coated with a simple device and to freely adjust the coating quantity of a coating material without requiring labor and time in the control of coating even if the dimension or the shape of the material to be coated is changed. SOLUTION: This coating method is for applying the multicolor coating on the surface 51 of the material 50 to be coated with a coating roller brush 30 having a core part 31 and a brush part 32. In such a case, recoating is repeatedly applied on the surface to be coated with the brush part by spraying coating materials C having different color from each other to supply to the outside surface of the brush part continuously, intermittently or in random from plural coating material spray guns 40 opposed to the outside surface of the brush part 32 of the coating roller brush.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller coating method for multicolor coating and a building material panel coated thereby.

[0002]

2. Description of the Related Art Conventionally, when an exterior wall of a house is made of an inorganic molded panel such as concrete, the surface is masonry, brick, tile, or the like in order to obtain a sense of quality and solidness. There is a case where a building material panel with a concavo-convex pattern that can be seen is used. In such a building material panel, a large number of irregularities are formed on the surface, and the convex portions constitute a masonry portion, a brick portion or a tile portion, and the concave portions constitute joint portions.

[0003] The surface of the building material panel, such as a brick-like portion, is painted in a single color or in multiple colors to enhance the decorativeness. As the coating method, for example, JP-A-9-851
No. 62, Japanese Patent Application Laid-Open No. 11-42453, and a roller method disclosed in Japanese Patent No. 2784529.
And the like, which are based on the ink jet printer system described in the above item.

Japanese Patent Application Laid-Open No. 9-85162 discloses a method in which a thin primary color coating film is formed along irregularities on a substrate surface, dried and solidified. A secondary colored coating film is formed with a pattern roll having a rough pattern. Therefore, there is an advantage that a fine pattern or a blurred color pattern with a certain gradation can be expressed by the pattern roll. However, since the pattern on the surface of the substrate is a layered coating of each single color, there is a limitation that it is not possible to obtain an irregular and complicated color and color tone by mixing colors.

[0005] Japanese Patent Application Laid-Open No. 11-42453 discloses
Since the paint supply pipe is provided inside the roller and the paint is supplied to the roller surface by extruding from the inside of the roller, it is difficult to apply a different color partially, and for the maintenance such as cleaning of the roller after completion of painting. There is a trouble that takes time.

[0006] Also, Japanese Patent No. 2784529 discloses
An inkjet printer and a computer are required, and the control of the inkjet printer is complicated, so it is very expensive.If the size or shape of the object to be coated such as a building material panel is changed, it is very difficult to manage the coating. There is a problem that it takes time.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned points, and is capable of forming a multicolored coating of irregular and complicated colors and colors by mixing colors on the surface of an object to be coated by a simple apparatus. Even when the size and shape of the object to be coated are changed, the roller coating method and the building material panel coated by the method can control the coating amount without any trouble and can freely adjust the coating amount. Is provided.

[0008]

That is, the invention of claim 1 is a roller coating method for performing multicolor coating on the surface of an object to be coated with a coating roller brush comprising a core portion and a brush portion. From the plurality of paint spray guns facing the outer surface of the brush portion of the brush, paints of different colors are continuously, intermittently or randomly sprayed and supplied to the outer surface of the brush portion, and paint is applied to the surface of the workpiece with the brush portion. It is characterized by performing.

According to a second aspect of the present invention, in the first aspect, the brush portion of the coating roller brush is a brush material, a cloth material attached to the outer surface thereof, and an elastic net attached to the outer surface of the cloth material. It is characterized by being composed of a material.

According to a third aspect of the present invention, in the method according to the first or second aspect, when the painting roller brush is applied to the surface of the workpiece, the painting roller brush is reciprocated on the surface of the workpiece in the rotation direction of the brush portion. Any one of the coating roller brush and the object to be coated, so that the coating roller brush moves in a direction smaller than the application width of the brush portion in a direction perpendicular to the reciprocating direction while the coating roller brush makes one reciprocation. It is characterized in that both are moved.

According to a fourth aspect of the present invention, in the method according to any one of the first to third aspects, when the paint is sprayed from a plurality of paint spray guns onto the outer surface of the brush portion of the roller brush for painting, the outer surface of the brush portion is coated with the roller brush for painting. Is divided into a plurality of parts in the axial direction, and a paint is sprayed on each part from a separate paint spray gun.

According to a fifth aspect of the present invention, in the fourth aspect, a paint of a different color from the paint on both sides of the boundary is provided at or near a boundary between paints having different colors on the outer surface of the brush portion of the coating roller brush. Or, while spraying randomly, the coating roller brush is reciprocated in the direction of rotation of the brush portion on the surface of the object to be coated, and while the coating roller brush makes one reciprocation, the brush portion is perpendicular to the reciprocating direction. The method is characterized in that one or both of the coating roller brush and the object to be coated are moved so as to move at a width smaller than the application width of the coating roller.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the paint is sprayed by the paint spray gun so that the center of the spray direction is substantially the center of the cross section of the coating roller brush. At the same time, the coating is performed so that the coating material spreads along the axial direction of the coating roller brush.

According to a seventh aspect of the present invention, there is provided an uneven pattern surface which looks as if masonry, brick, tile and the like are masonry or pasted, wherein the brick-like portion and the like on the surface are convex and the joint-like portion is concave. 7. A panel for building materials, wherein at least the surface of the concave portion is coated with a joint color, and the surface of the convex portion has a color or color tone formed by applying the roller coating method according to any one of claims 1 to 6. It is characterized by having a regular multicolor painted surface.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a schematic view showing a roller coating apparatus used in a roller coating method according to one embodiment of the present invention, and FIG.
FIG. 3 is a schematic side view of the vicinity of a painting roller brush showing another example of the arrangement of the paint spraying gun, FIG. 4 is a view showing an example of the movement of the painting roller brush in a roller painting method, and FIG. FIG. 6 is a view showing another example of the movement of the roller brush, FIG. 6 is a view showing a state of movement of the painting roller brush and the object to be coated, and FIG. 7 is a front view of the panel for multicolor painted building materials according to one embodiment of the present invention. FIG. 8, FIG. 8 is an RR cross-sectional view of the multicolor painted building material panel of FIG. 7, FIG. 9 is a view showing a roller coating apparatus used in the coating method of another embodiment in the same manner as FIG. 2,
FIG. 10 is a front view of a multi-color painted building material panel according to another embodiment of the present invention.

The roller coating apparatus 10 shown in FIGS. 1 and 2
Is used in the roller coating method according to one embodiment of the present invention, and has an application unit 11 and a paint supply unit 12. In this embodiment, a case where the surface of the building material panel 50 is coated with a roller as an object to be coated will be described.

The application section 11 is a section for applying paint to the surface of the building material panel 50 and has a painting roller brush 30. In this embodiment, a coating roller brush 3 is provided between the lower portions of both side arm portions Fa of a frame F having a substantially gate shape in a front view.
0 is rotatably mounted on the shaft. The frame F is supported by a support frame (not shown) so as to be movable up and down or in the left-right direction in FIG. 2, or is connected to a rod-shaped handle (not shown) and held by an operator to perform coating. The roller brush 30 is used to move the surface of the building material panel 50.

The roller brush 30 includes a core 31 and a brush 32. The core portion 31 is formed of a synthetic resin material, paper material, metal, or the like in a cylindrical shape of a predetermined size, and both ends thereof are closed.
6 are formed to project. Core 31 in this embodiment
Is made of a plastic cylinder having a width (length) of 400 mm and an outer diameter of 165 mm, and mounting shaft portions 36 are formed at both ends thereof.

The brush portion 32 is for temporarily holding the paint, and is entirely formed of a sponge material such as rubber or urethane, a synthetic fiber, a natural fiber material, or other various brush material materials. Preferably, a brush material 33 as in this example,
It is composed of a cloth material 34 attached to the outer surface and an elastic net material 35 stuck to the outer surface of the cloth material 34.

The brush material 33 is made of various materials such as a sponge material such as rubber and urethane, a chemical fiber, a natural fiber material, and the like.
In this embodiment, the hair length 13 is woven in a moquette shape.
mm of acrylic fiber.

The cloth material 34 prevents the paint from dripping from the brush material 33 into the joint recess when the surface pattern portion having large irregularities such as the joint portion is coated with the roller.
This is for preventing the paint from adhering non-uniformly to the surface of No. 0, and it is preferable that the paint has high absorbency and retention, and also has appropriate flexibility. In this example, a known bleached cotton was applied in a single layer. Further, it is preferable that the cloth material 34 is adhered to the brush material 33 so that wrinkles and slack do not occur. For example, it is good to wind it so that it may be in close contact with the outer diameter of the brush material, or to form a tube and adhere it. In order to prevent the cloth material 34 from being displaced from the brush material 33 during coating, the cloth material 34 is fixed to the brush material 33 by wrapping the cloth material ends at both ends of the roller with a cord-like member. Alternatively, a double-sided adhesive tape, an adhesive, or the like may be attached to the end of the roller (both are not shown). Further, a cloth material formed by sewing the ends of the cloth material 34 into the cylindrical shape may be used. It is more preferable that the cloth material 34 has the above-mentioned tubular shape without a seam because traces of the seam of the cloth material 34 do not remain on the painted surface.

The elastic net material 35 is for preventing the cloth material 34 from being loosened or biased at the time of roller coating. In this embodiment, the elastic net material 35 is made of a stretchable tubular net material (made of cotton yarn and elastic yarn). A so-called mesh bandage provided for medical use was used in a state of being stretched (tensile) by 10 to 15 times from a free state before being attached. If the yarn diameter of the elastic net material 35 is large, the elastic net material 3
Since the pattern No. 5 appears, it is preferable to make the pattern as thin as possible, that is, about 2 mm or less when covered with the cloth material 34.

The paint supply unit 12 is a known airless painting machine for supplying paint to the coating unit 11, and includes a plurality of paint spray guns 40, a paint tank T, and a spray gun for spraying paint in the paint tank T. 40, a control device S for controlling the supply of the paint and the spraying of the paint, a pump P for pressurizing the paint, and an air compressor E.
And In addition to connecting a separate pump, control device, and paint tank for each spray gun, a plurality of spray guns can be provided for each required number so that the paint can be separately supplied to each of the plurality of spray guns 40. It may be divided into a plurality of groups, and a pump, a control device, and a paint tank may be connected to each group. Further, an air pipe for controlling the shape and area of the spray of the paint from the nozzle may be provided in parallel.

The paint spraying gun 40 is connected to the brush 32
This is for spraying and supplying the paint to the outer surface. In this embodiment, the paint is of an airless type and has a structure in which the spraying of the paint C can be manually turned on or off as appropriate. The spray gun 40 has an appropriate number according to the type of paint to be sprayed, the spray pattern, and the spray position so that the discharge nozzles 41 face the outer surface of the brush portion 32 of the coating roller brush 30. Provided.

In this embodiment, as shown in FIGS. 1 and 2, a first paint spray gun 40b and a second paint spray gun 40c are attached to the frame F at required intervals along the axial direction D of the roller brush 30. A first paint Cb and a second paint Cc are attached to the outer surface of the brush portion 32 in the axial direction D.
And can be sprayed and supplied in two equal parts.

The paint spraying gun 40 is arranged so that the center M in the paint spraying direction is directed substantially toward the center H of the cross section of the coating roller brush 30, and the paint is sprayed along the axial direction D of the coating roller brush. It is preferable that C is widened. In this case, the paint C sprayed from the paint spray gun 40 almost adheres to the brush portion 32, so that paint loss is reduced, and an object to be coated or the like is stained by paint scattered to a portion other than the painting roller brush. Will not be done. Further, in this embodiment,
The circumferential spray width B of the outer surface of the brush portion 32 is set to be equal to or less than one-third of the diameter of the coating roller brush 30 so that the entire coating material C adheres to the brush portion 32.

The number of the paint spray guns is not limited to two, but may be an appropriate number according to the size of the brush portion, the type of paint to be sprayed, the spray pattern, and the like. Further, the number of colors of the paint to be used and the arrangement position of the paint spraying gun are appropriately determined. For example, as an example of the arrangement position of the paint spraying gun, as shown in FIG. 3, the paint spraying guns 40d, 40d of different colors along the rotating direction of the painting roller brush 30d.
40e is installed. By doing so, the roller brush 30d is formed on the outer surface of the brush portion 32d.
By changing the order of each spray paint by the reciprocating rotation of the above, it is possible to obtain a painted surface having a different taste from the above example.

A method for performing multicolor coating with irregular colors and colors on the building material panel 50 using the roller coating apparatus 10 will be described. As shown in FIGS. 1 and 4, the building material panel 50 has an uneven surface 51 that looks as if masonry, bricks, tiles, and the like have been masonryed or pasted. The brick-shaped portion or the tile-shaped portion or the like is a convex portion 52, and the joint-shaped portion is a concave portion 53. On the surface of the convex portion 52, fine irregularities of 1 to 3 mm are formed. The concave portion 53 or the surface 5
A required joint color is painted in advance on the whole 1.

When the building material panel 50 is painted, the paint C is sprayed from the paint spray gun 40 onto the outer surface of the brush portion 32 while rotating the painting roller brush 30. In this embodiment, as described above, the two paint spraying guns including the first paint spraying gun 40b and the second paint spraying gun 40c extend along the axial direction D of the roller brush 30 so that the outer surface of the brush portion 32 is Since it is arranged so as to be approximately bisected in the axial direction D, for example, the gray paint Cb is sprayed continuously on one half side and the brown paint Cc is continuously sprayed on the other half side. Then, the brush part 32 to which the gray paint Cb and the brown paint Cc are separately and continuously sprayed and supplied is rotated and moved on the building material panel surface 51 to perform painting.

At this time, the coating roller brush 30
Is reciprocated between both ends of the construction material panel surface 51 (in this example, between the upper and lower ends in the drawing of the construction material panel surface 51) along one direction of the joint perpendicular to the surface 51 of the construction material panel 50. During one reciprocation, in a direction perpendicular to the reciprocation direction (in this example, to the right of the building material panel surface 51),
The brush portion 32 is moved by a distance smaller than the application width L.

More specifically, in this example, during the movement of the painting roller brush 30 from the upper end to the lower end, which is the painting start position of the building material panel surface 51, the painting roller brush 30 does not move in the direction orthogonal to the reciprocating direction. Then, as shown by an arrow x in FIG. Next, when the coating roller brush 30 reaching the lower end of the building material panel surface 51 is moved to the upper end of the building material panel surface 51, as shown by an arrow y in FIG. The building material panel surface 51 is moved to the right by an amount substantially equal to half. This is repeated to paint from the left end to the right end of the building material panel surface 51.

When the coating is performed as described above, on the surface of the building material panel 50, a brown paint Cc is repeatedly applied (WET ON WE) following the previously painted gray paint Cb.
T), the gray paint Cb and the brown paint Cc are mixed and applied in a complicated manner. Therefore, it is possible to obtain a painted surface having an irregular and complicated color and color tone due to mixed colors, which cannot be obtained by repeatedly applying paints of different colors after drying. FIG. 7 is a front view of the multicolor painted building material panel 60 thus obtained, FIG. 8 is a cross-sectional view of the multicolor painted building material panel 60, reference numeral 62 denotes a convex portion, 63 denotes a concave portion, and 64 denotes a multi A color painted surface 65 is a joint color painted surface.

The pattern of the movement of the coating roller brush 30 is not limited to the one described above, but may be any suitable one. For example, the movement of the painting roller brush 30 in the reciprocating direction (rotation direction) and the movement in the direction orthogonal to the reciprocating direction are performed simultaneously, and as shown in FIG. It may be V-shaped. Further, instead of moving the painting roller brush 30 in the axial direction, the same painting as described above may be performed by moving the building material panel 50. Further, there is a method of performing painting by moving both the painting roller brush 30 and the building material panel 50. As an example, as shown in FIG. 6, the painting roller brush 30 is linearly reciprocated between the upper and lower ends of the building material panel surface 51 as shown by an arrow p, and the building material panel 50 is shown by an arrow q. And a method of moving in a direction orthogonal to the reciprocating direction.

FIG. 9 shows a coating apparatus 10 used in another embodiment.
The outline of the vicinity of the roller brush 30 of A is shown. This painting roller brush 30 is the same as the roller brush shown in FIGS. 1 and 2, and has three paint spraying guns 40 (40 a, 4 a) along its axial direction D.
0b, 40c) are provided with the center M in the spraying direction directed substantially toward the center H of the cross section of the roller brush 30 for painting.

The three paint spray guns 40 (40a, 4
0b, 40c) comprises a central paint spray gun 40a, a first paint spray gun 40b on one side, and a second paint spray gun 40c on the other side. First paint spray gun 40b
The second paint spraying gun 40c continuously sprays, for example, gray paint Cb and brown paint Cc so as to divide the outer surface of the brush portion 32 into two in the axial direction D of the roller brush 30, whereas the central paint spraying gun 40c 40a is the brush part 3
For example, black paint Ca is intermittently or randomly sprayed on or near the boundary 37 between the gray paint Cb and the brown paint Cc at the center of the two outer surfaces.
The black paint Ca intermittently or randomly
2 is sprayed and supplied to the outer surface, so that the black paint Ca is irregularly attached to the outer surface of the brush portion 32. The other configuration is the same as that of the coating apparatus 10 of the previous embodiment, and the same components are denoted by the same reference numerals as those of the previous embodiment.

The coating method in this embodiment is similar to that shown in FIGS. 4 to 6 described in the previous embodiment. First, a joint color is applied to the recess 53 or the entire surface 51 of the building material panel 50. I do. Next, the building material panel surface 5
1 and the brush portion 32 of the roller brush 30 is brought into contact with the brush portion 32. While the roller brush 30 makes one reciprocation between both ends of the building material panel surface 51, the roller brush 30 is moved in a direction orthogonal to the reciprocating direction. The multicolor coating is performed by moving by a width smaller than the application width L. At this time, a gray paint Cb and a brown paint Cc are respectively applied to the brush portions 32 of the coating roller brush 30 so as to be bisected in the axial direction D of the roller brush 30 by the respective paint spraying guns 40b and 40c.
, And the black paint Ca is intermittently or randomly sprayed and supplied to or near the boundary 37 between the gray paint Cb and the brown paint Cc on the outer surface of the brush portion 32. On the panel surface 51, the black paint Ca is partially applied on the undried gray paint, and further, the brown paint is applied thereon while the black paint is not dried. In some places, the black paint becomes blurry, creating an atmosphere as if bricks and tiles have aged.

The movement pattern of the coating roller brush 30 at the time of the application is as shown in FIGS. 4 to 6, and in particular, the black pattern on the surface of the building material panel is moderated.
To obtain an old brick-like atmosphere closer to the real thing, it is preferable to paint as follows. That is, in FIG.
The painting roller brush 30 is moved straight from the upper end to the lower end of the building material panel surface 51 as indicated by an arrow x, and during this time, the black paint spray gun 40a is used to remove the gray paint Cb and the brown paint Cc on the outer surface of the brush portion 32. Black paint Ca is sprayed intermittently or randomly at appropriate intervals on or around the boundary portion 37. Then, when the coating roller brush 30 reaches the lower end of the building material panel surface 51 and then moves to the upper end of the building material panel surface 51, the coating brush 30 is moved as shown by an arrow y, and the black paint Ca is not sprayed during the movement. To This is repeated to paint from the left end to the right end of the building material panel surface 51. In this case, the black color has an appropriate amount suitable for a brick tone, and the spreading and mixing of the black paint are also appropriate. FIG. 10 shows the multicolor painted building material panel 6 thus obtained.
0A is a front view, and reference numeral 62A indicates a convex portion, 63A indicates a concave portion,
64A is a multicolor painted surface, 65A is a joint color painted surface, and 66A is a black portion.

Further, the coating method of the present invention is not limited to coating on a building material panel having an uneven surface as described above, and can be used when coating an appropriate material. For example, the present invention can be applied to a case in which an object to be coated having a flat surface is applied, and an object to be applied to an object other than a building material panel. Further, other colors may be used for the coating color according to the purpose and application.

[0039]

As described above, according to the first aspect of the present invention, on the surface of the object to be coated, paints of different colors are applied over the paint before drying, and applied first. Since the paint is pressed by the roller together with the paint thereon, the paints of different colors are mixed, and irregular and complicated multicolor painting of colors and colors can be performed. Also, since the paint is sprayed and supplied to the coating roller brush, the amount of paint sprayed can be easily changed, and the coating can be easily changed by changing the amount of paint sprayed or the rotation speed of the coating roller brush. The thickness of the paint film can be changed.

Further, according to the second aspect of the present invention, when the surface of the object to be coated is coated with the roller brush for coating, the presence of the cloth material and the elastic net material on the outer surface of the brush material causes irregularities such as joints to be formed. When painting a large surface pattern, paint can be prevented from dripping and can be painted on the side wall of a concave part several mm deeper than the convex part such as the side wall of the joint-like part of the workpiece by pressing deformation of the brush part, bricks and tiles It is possible to obtain a good multicolor painted surface with a thickened pattern.

According to the third aspect of the present invention, the roller brush to which the paints of different colors are sprayed and supplied is reciprocated on the surface of the object to be coated, and the reciprocating direction is determined while the coating roller brush makes one reciprocation. In order to move the coating roller brush and / or the object to be painted by moving one or both of them so as to move in a direction perpendicular to the brush part with a width smaller than the application width of the brush portion, the paint before drying is applied on the surface of the object to be painted. Paints of different colors are surely overlaid on top of each other, and the previously applied paint is pressed by rollers with the paint on it, resulting in a mixture of paints of different colors, irregular and complex colors , Multi-color painting is possible.

According to the fourth aspect of the present invention, the outer surface of the brush portion of the coating roller brush is divided into a plurality of portions in the axial direction of the roller brush, and different paints are separately sprayed and supplied to the respective portions, while the surface of the object is coated. The paint is mixed while moving the roller brush relatively to the surface of the work, so that the mixing of the paint on the work surface is not too complicated, and the irregularities of the colors and patterns formed on the work surface are disordered. Multicolor coating with good appearance can be made without being unsightly.

According to the fifth aspect of the present invention, the outer surface of the brush portion of the coating roller brush is divided into a plurality of portions, and paint of different colors is continuously sprayed and supplied to each portion.
The roller brush is reciprocated on the surface of the object to be sprayed while intermittently or randomly spraying and supplying a paint of a color different from the paint on the both sides of the boundary at or near the paint spraying boundary, and the reciprocation during one round trip In order to perform painting while moving one or both of the painting roller brush and the object to be painted, so as to move in a direction smaller than the painting width of the brush portion in a direction perpendicular to the direction, the intermittent or random supply is performed. The paint can irregularly form a blurred color pattern on the surface of the object to be coated, and can perform multicolor coating with more excellent appearance.

According to the sixth aspect of the present invention, the paint can be sprayed efficiently from the paint spraying gun onto the brush portion of the coating roller brush, and the multicolor coating can be performed economically and efficiently. Can be.

According to the seventh aspect of the present invention, the concave portions on the surface of the building material panel are joint-colored, and the convex surface is the fourth type.
Or, since the invention according to the fifth aspect has a multicolor painted surface having irregular colors and color tones, the color and color tone of the surface of the convex portion become complicated due to the mixture of paints of different colors, and the building material panel The surface is excellent in a delicate aesthetic.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a roller coating apparatus used in a roller coating method according to one embodiment of the present invention.

FIG. 2 is an A view of the vicinity of a coating roller brush in FIG. 1;

FIG. 3 is a schematic side view showing the vicinity of a coating roller brush showing another arrangement example of a paint spraying gun.

FIG. 4 is a diagram illustrating an example of movement of a coating roller brush in a roller coating method.

FIG. 5 is a view showing another example of the movement of the painting roller brush.

FIG. 6 is a diagram showing a state of movement of a painting roller brush and an object to be painted.

FIG. 7 is a front view of a panel for multicolor painted building materials according to one embodiment of the present invention.

FIG. 8 is an RR cross-sectional view of the multicolor painted building material panel of FIG. 7;

FIG. 9 is a view showing a roller coating apparatus used in a coating method according to another embodiment, similarly to FIG.

FIG. 10 is a front view of a multicolor-painted building material panel according to another embodiment of the present invention.

[Explanation of symbols]

 10, 10A Roller coating apparatus 30 Roller brush for coating 31 Core part 32 Brush part 33 Brush material 34 Cloth material 35 Elastic net material 37 Paint boundary part 40 Paint spray gun 50 Building material panel (object to be coated) 51 Building material panel ( (Coating object) Surface 60,60A Multicolor paint building material panel 62,62A Convex part 63,63A Concave part 64,64A Multicolor paint surface 65,65A Joint color paint surface C Paint D Axial direction of roller brush for painting H Painting Approximately the center of the cross section of the roller brush L Width of application of the brush part M Center of paint spraying direction

Continuation of the front page (72) Inventor Toshio Kitagawa 2-1, Higashi Maeno-cho, Konan-shi, Aichi F-term (reference) in Misawa Ceramics Co., Ltd. 4D075 AC29 AC88 CB22 CB36 DA07 DC03 4F040 AA02 AB04 AC01 AC04 BA13 CB02 CB09 CB21 CB40

Claims (7)

[Claims] 1. A roller coating method for performing multi-color coating on the surface of an object to be coated with a coating roller brush comprising a core portion and a brush portion, wherein a plurality of paint sprays are provided so as to face the outer surface of the brush portion of the coating roller brush. A roller coating method, wherein a paint of a different color is continuously and intermittently or randomly sprayed onto the outer surface of the brush portion from a gun to supply the paint to the surface of the workpiece with the brush portion. 2. The brush portion of the roller brush for painting is made of a brush material, a cloth material attached to the outer surface of the brush material, and an elastic net material attached to the outer surface of the cloth material. Item 7. A roller coating method according to Item 1. 3. A coating roller brush is reciprocated in the direction of rotation of a brush portion on the surface of an object to be coated when the surface of the object is coated with the roller brush for coating, and the roller brush for coating is reciprocated once. 2. The method according to claim 1, wherein one or both of the coating roller brush and the object to be coated are moved so as to move in a direction orthogonal to the reciprocating direction with a width smaller than the application width of the brush portion. Or 2
Roller coating method described in 1. 4. When the paint is sprayed from a plurality of paint spray guns onto the outer surface of the brush portion of the coating roller brush, the outer surface of the brush portion is divided into a plurality of parts in the axial direction of the coating roller brush, and each portion is separately formed. 4. The roller coating method according to claim 1, wherein a paint is sprayed from a paint spray gun. 5. The coating roller while intermittently or randomly spraying a coating of a different color from the coating on both sides of the boundary on or near a boundary of the coating of a different color on the outer surface of the brush portion of the coating roller brush. The brush is reciprocated in the direction of rotation of the brush portion on the surface of the object to be coated, and is moved with a width smaller than the application width of the brush portion in a direction orthogonal to the reciprocation direction while the coating roller brush makes one reciprocation. 5. The roller coating method according to claim 4, wherein one or both of the coating roller brush and the object to be coated are moved. 6. The spraying of the paint by the paint spraying gun is performed such that the center of the spraying direction is substantially the center of the cross section of the coating roller brush, and the paint spreads along the axial direction of the coating roller brush. The roller coating method according to any one of claims 1 to 5, wherein the method is performed as described above. 7. A building material panel having an uneven pattern surface that looks as if masonry, pasting, or the like of masonry, brick, tile, and the like, the brick-like portion and the like of the surface having a convex portion and the joint-like portion having a concave portion. A joint color is applied to at least the surface of the concave portion, and the surface of the convex portion is formed by applying the roller coating method according to any one of claims 1 to 6, and the color or the color tone is irregularly multicolored. A building material panel characterized by a surface.