JPH0762828A - Building board and painting method thereof - Google Patents

Abstract

PURPOSE:To paint building boards so as not to attract attention to the difference in tone in adjacent building boards in the case they are used for a building by painting a plurality of projections sectioned and formed on the surface of a substrate through gutters with two or more different tones distributed at random. CONSTITUTION:After the primecoating sealer treatment is given to a substrate 2 forming a plurality of projections 4 and 4 sectioned through gutters 3 and 3 on the surface, the projections 4 are painted through an ink jet printer. At that time, two or more different tones 5-8 are provided between the projections 4, and the tones 5-8 are distributed at random. For that purpose, in the case building boards 1 are used for a building, general difference in tone between adjacent building boards 1 is not so accentuated because of difference in tone between the projections 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building board in which a large number of convex portions are formed on the surface via grooves such as brick-like or tile-like, and a coating method therefor.

[0002]

2. Description of the Related Art Recently, in an exterior building board, as shown in FIG. 7, for example, a groove portion 5 is formed on the surface of a substrate 51 by embossing or by cutting a groove portion so as to have a brick tone or a tile tone.
Building board 54 having convex portions 53 to 53 partitioned by 2 to 52
Is increasing.

However, this building board 54 has a groove 52.
To 52 and the convex portions 53 to 53 are separately coated with a roll coater, and the convex portions 53 to 53 are all finished with the same color tone 55. Due to the unevenness of the paint being sucked into the building, the non-uniformity of the coating amount of the coating due to the variation in the thickness of the substrate 51, and the color difference variation between the compounding lots of the coating itself, etc. The difference in color tones 55 and 56 between 54 and 54 was conspicuous and was unsightly.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention provides a building board in which the difference in color tone between adjacent boards in the construction state of a building is less noticeable, and a coating method by which the building board can be easily obtained. It is an attempt to solve a technical problem.

[0005]

[Means for Solving the Problems] That is, the first invention of the present application is a building board having a plurality of convex portions formed on the surface of the convex portion divided by groove portions, wherein the convex portions have two or more different color tones. A second aspect of the present invention is a building board, characterized in that the building board is characterized in that these color tones are randomly distributed and coated on the projections, and a second invention is an inkjet printing of the projections of the building board. The gist is a method of painting a building board, which is characterized in that painting is performed by a printer.

[0006]

In this construction board, the convex portions have various color differences, and the overall color difference between the adjacent construction boards in the construction state of the building is the convex portion. It is inconspicuous because it is canceled by the difference in color tone between each other.

[0007]

Embodiments of the present invention will now be described with reference to FIGS. As shown in FIGS. 1 and 2, the building board 1 of this example,
Each of the grooves 1 to 3 is formed on the surface of the substrate 2 having a rectangular shape.
A large number of convex portions 4 to 4 are divided in a brick-like manner through 3, and the convex portions 4 to 4 have different kinds of different color tones, for example, dark tone, slightly dark tone, slightly light tone, and light tone in the figure. Tones 5, 6,
7 and 8, and the color tones 5, 6, 7, and 8 of these convex portions are randomly distributed and coated on the convex portions 4 to 4.

In the building boards 1 and 1 thus constructed,
Since the convex portions 4 to 4 have various color tones 5, 6, 7, and 8, the building boards 1 and 1 which are adjacent to each other in the construction state of the building
The overall difference in color tone between the convex portions 4 to 4 is 5,
It is inconspicuous because it is canceled by the difference of 6, 7, and 8.

Next, an example of a method of coating the building board 1 will be described with reference to the ink jet printer 11 shown in FIGS. 3 and 4. Reference numeral 12 is a conveyer for conveying the substrate 2 forward, and above the conveyer 12. On the painting head 1
3 is provided, and the conveyor 12 is provided at the lower end of the coating head 13.
The jet nozzles 14 to 14 are juxtaposed over the entire width direction, for example, at a pitch of 0.5 to 3 mm. The coating head 13 has a coating ink 1 in the ink tank 15.
A pump 17 for feeding 6 is connected, and an ink tank 15 is connected via a relief valve 18. 19
Is a valve control device for individually controlling the valves 20 to 20 for opening and closing the jet nozzles 14 to 14 of the coating head.
1 is the pattern data in which the color pattern corresponding to the color to be painted is recorded, and 22 is the input pattern data.
A computer for issuing a control signal to the valve control device 19 based on the controller 21, and 23 is a photoelectric tube type sensor in which a light projector 24 and a light receiver 25 are provided at predetermined positions on both sides of the building board conveying path on the conveyor 12. , The detection signal is computer-22
Send to. Reference numeral 26 is an encoder connected to a drive roll 27 of the conveyor 12, and has a minimum rotation angle, for example, 20.
Computer 22 for every minimum rotation angle of 360/00 degrees
To send a pulse to.

In the method of this embodiment, however, after the substrate 2 having the convex portions 4 to 4 on the surface is subjected to the undercoating sealer treatment,
When it is advanced on the conveyor 12, the sensor 23 detects the arrival of a predetermined position at the front end of the substrate 2 and sends a detection signal to the computer 22. On the other hand, with the operation of the conveyor 12, pulses are transmitted to the computer 22 from the encoder 26 provided in the drive roll 27. The computer 22 starts counting the pulses in response to the signal from the sensor 23, and when the number of pulses reaches a preset area stored in advance, the pattern pattern of the color tone pattern is changed according to the number of pulses. A control signal based on the control signal 21 is sequentially sent to the valve control device 19, so that the valve control device 19
Controls the valves 20 to 20 individually, and the ink 16 in the coating head 13 is jetted from the jet nozzles 14 to 14 to a required position on the surface of the substrate 2 being conveyed when the valves 20 to 20 are opened. -Color tone 5 based on the data 21,
6, 7 and 8 are drawn on the convex portions 4 to 4 to obtain the desired building board 1.

Next, when various colors are applied to the building board to give different color tones, as shown in FIG.
3, 34 are provided, and these coating heads 32, 33, 34
Different inks are supplied to the coating heads 32, 33, 34 in the same manner as in the above example, and the ink is jetted from the jet nozzles 35, 35, 35 arranged in parallel to the width direction of the conveyor 31 to advance the conveyor 31. Multicolor coating is applied to the convex portions 4 to 4 on the surface of the substrate 2 to be formed.

Further, in addition to the above example, the building board of the present invention has, as shown in FIG. 6, different color tones 44, as in the above example, on the convex portions 43 to 43 divided by the groove portions 42 to 42 with curved or oblique directions. Four
There is no problem even if it is used as the building board 41 provided with Nos. 5 and 46, and in this case as well, painting is easily performed by the same method as the above example.

[0013]

As described above, in the building board of the present invention, the overall color difference between adjacent building boards in the construction state of the building is canceled by the color difference between the respective convex portions. It has an inconspicuous effect. Moreover, in the coating method of the present invention, the building board can be easily obtained.

[Brief description of drawings]

FIG. 1 is a plan view of a building board according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a part of the building board of the above example.

FIG. 3 is a schematic front view of an example apparatus for carrying out the coating method of the above example.

FIG. 4 is a schematic right side view of the same device.

FIG. 5 is a schematic right side view of an apparatus according to another embodiment of the present invention.

FIG. 6 is a plan view of a building board according to another embodiment of the present invention.

FIG. 7 is a plan view of a conventional construction board.

[Explanation of symbols]

 1 Building board 3 Groove 4 Convex 5 Color 6 Color 7 Color 8 Color 11 Inkjet printer

Claims (2)

[Claims] 1. A building board having a plurality of convex portions formed on a surface thereof divided by groove portions, wherein the convex portions have two or more different color tones, and these color tones are randomly distributed. Architectural board characterized by being painted on the part. 2. A method for coating a building board according to claim 1, wherein the convex portions of the building board are painted by an ink jet printer.