JPH0483556A - Coating method for external angle corner - Google Patents

Abstract

PURPOSE:To permit coating to be performed on a production line by a method wherein the materiel plate having a groove is cut into a predetermined size, the cut pieces thereof are bonded together at their corner parts, and coated all over its surface with the same hue as on the groove part and the flat part is roll coated with the material different in color from this hue. CONSTITUTION:A groove part 2 is formed in the material plate 1 for use in the manufacture of external angle corner in a predetermined position and size. The material plate 1 is cut into a predetermined size. The cut pieces of such a plate are bonded together at their cut faces 3 using adhesive agent, metal fitting, screw or the like. The bonded corner is chamfered to form a chamfered part 4. The external angle corner thus obtained is then coated entirely in the same hue as on the groove part 2. By this coating, the groove part 2, the chamfered part 4 and the flat part 5 are all coated in the same hue as on the groove part. In this way the chamfered part and the flat at part can be coated with a clear parting line therebetween on a production line.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to a method for painting protruding corners. The present invention relates to a method of painting a protruding corner, which allows the surface and flat parts to be painted separately, and which can be produced on a line.

(Prior Art) Extruded corners have been used as various accessories for some of the exterior walls of buildings. For example, as the projecting corner, an ornament (A) molded from a cement-based material or the like, as shown in FIG. 3, has been used.

For example, in many cases, the surface of the protruding corner used as an accessory (a) is painted from the viewpoint of weather resistance, water resistance, and appearance design.

Regarding this surface painting, it is often done to improve the design by painting the grooves (A) and chamfered parts (T) and the flat parts (1) in different hues to give them a sense of style. .

Extruded corner accessories painted in different hues like this (
In case a), painting is usually performed according to the procedure shown in FIG. 4, for example. That is, first, the entire surface of the original plate (forced), which has undergone predetermined groove processing, is coated in the color of the predetermined grooves using a sprayer or a roll coater. As a result, both the grooves and the flat parts are painted in the same color.

Next, in order to paint only the flat part (ke) in a different color, coating is applied using a roll coater (k), etc. Through this process, the flat part (ge) of the original plate (ke) is overcoated, and the groove part (ke) is coated. The color will be different from that of

After completing this type of painting, the original board (force) is cut to the specified dimensions, the cut painted boards (su) are pasted together so that they can be used as corner accessories, and the corners of the pasted parts are chamfered. The chamfered portion (shi) is then painted in the same color as the # (ri) to complete the process.

(Problem to be Solved by the Invention) However, in the conventional manufacturing method of painted protruding corners, although it is possible to separately paint the groove and the flat part, it is necessary to cut the corners after painting. However, since bonding and chamfering are performed, there is a drawback that scratches and stains occur on the painted surface during processing, which requires repair.

Another drawback is that the chamfered portion (X) inevitably needs to be repaired afterward.

These shortcomings have made it difficult to automate the painting process as a line production.

Furthermore, since it is not necessary to decide in advance the color to be painted at the stage of the original board depending on the material, color, paintability, etc. of the original board, it is necessary to select the original board in order to obtain the desired color. There were some troublesome points.

This invention was made in view of the above-mentioned circumstances, and it solves the drawbacks of the conventional painting method for projecting corners.
The purpose of the application is to provide an efficient and improved method for painting outside corners that allows for line production.

(Means for Solving the Problems) This invention solves the above problems by cutting thick plates having grooves into predetermined dimensions, pasting them together at the corners,
Furthermore, after chamfering, the entire surface is painted in the groove color, and then the flat part is roll-painted in a color different from the color removed.

(Function) In the painting method of the present invention, painting is performed after cutting, pasting, and even chamfering, so the painted surface is not affected by scratches or stains during processing, and it is not as easy as conventional methods. There is no need to repair chamfered parts, and since each color can be determined at the time of painting, there is no need to select the original plate as in the past, making it possible to perform highly efficient line painting.

(Example) Hereinafter, the coating method of the present invention will be explained in more detail with reference to the attached drawings.

FIG. 1 of the attached drawings is a process sectional view illustrating the coating method of the present invention. For example, as illustrated in FIG.
) is formed with a groove (2) at a predetermined position and dimension.

The original plate (1) may be made of various materials, such as a cement-based inorganic plate. A cement-based inorganic board manufactured by a papermaking method or an extrusion method can be used. It may be a wood base plate or a resin composite type.

(b) The original plate (1) with the groove (2) formed thereon is cut to a predetermined size. The following lamination is performed on the cut surface (3).

(c) Each member of the cut original plate (1) is pasted together at its cut surface (3) using adhesive or specified metal fittings, screws, etc.

(d) Next, this bonded corner is chamfered to form a chamfered part (4) to complete the shape of the protruding corner, and in this example, the groove part (2)
, it has the shape of a protruding corner accessory having a chamfered part (4) and a flat part (5).

(e) The obtained protruding corner is then formed into a groove (2
) Paint the entire surface in the hue for coloring.

For example, it is preferable that the color of the groove is gray or another relatively dark color.In this case, the entire surface can be painted by spraying (6), or by an appropriate means such as a roll coater or a flow coater. .

By this painting, the groove portion (2), the chamfered portion (4), and the flat portion (5) are all painted in a uniform colorless hue.

At this time, pay attention to the viscosity of the paint, the amount of paint applied, and the method of application so that the paint film is as uniform as possible. Examples of the paint include acrylic emulsion type paints and urethane type paints.

<f) After the entire surface is painted by erasing, the flat part (5) is coated with a color of a different hue from that of this erasing using a roll coater (7). The left and right flat parts (5) can be painted simultaneously or one side at a time. Roll coater (7)
is preferably a soft rubber roll.

By this roll coating, the flat part (5) becomes the groove part (2).
and the chamfered portion (4) are painted in a different color. In this case as well, acrylic emulsion type or urethane type paints can be suitably used.

FIG. 2 shows an enlarged view of this roll coating.

By coating with a roll coater, the flat part is coated with
The color erasing coating film (8) and the flat area coating film <9> are in a state of overlapping coating.

The groove part (2) and chamfer part (4) are painted with Wakuiro I! ! The state is colored only by (8).

Of course, various aspects are possible regarding the details of the steps (a) to (f) above. Polishing or the like may be performed as appropriate.

In any case, with the coating method of the present invention, it is not affected by scratches or stains caused by cutting, chamfering, etc. of the protruding corners, as in the past, and there is no need to repair the chamfered portions. Furthermore, since each color can be determined at the time of painting, there is no need to select the original plate.

(Effects of the Invention) As described above, according to the present invention, it becomes possible to separately paint the groove portion, and also the chamfered portion and the flat portion as line production.

[Brief explanation of drawings]

FIG. 1 is a process sectional view illustrating the coating method of the present invention. FIG. 2 is a perspective view showing roll coating of the flat surface part of this process. FIG. 3 is a perspective view illustrating an example of a protruding corner, and FIG. 4 is a process sectional view showing a conventional coating method for protruding corners. 1...Original plate 2...Water part 3.
...cut surface 4...bevel rhyme 5...
Plane part 6...Spray...Roll coater 8...Discoloration coating film 9...Plane part coating agent Patent attorney Toshio Nishizawa

Claims (2)

[Claims] (1) An original plate having grooves is cut to a predetermined size and laminated at the corners, and then the entire surface is painted in the color of the grooves, and then the flat parts are roll-painted in a color different from this hue. How to paint corners. (2) The coating method according to claim (1), wherein the laminating process is followed by chamfering, and then the entire surface is coated.