JPH02229581A - Painting method - Google Patents

Abstract

PURPOSE:To obtain a painting method which does not adopt a printing system, hence does not require plate making, can express nonuniform patterns and can form the patterns regardless of the sizes of a base material and the presence or absence of ruggedness. CONSTITUTION:After a primer coated film 2 is formed on the surface of the base material 1, dyes 3 are applied on the primer coated film 2 nearly over the entire surface. A solvent 4 is applied on the dyes 3 in the form of plural pieces of lines to move the dyes 3 by the solvent; thereafter, a clear top coated film is formed thereon. The solvent 4 acts as a carrier to move the dyes 3 and partially gather the dyes 3 to the line shape so as to form the part where there are the many dyes 3 and the part where there are the few dyes 3, thereby expressing the stone patterns by the changes in the various densities, etc., of the color patterns. The stone patterns are varied from each other by the degrees of coating of the solvent 4 and the degree of spreading thereof. The patterns which are not uniform are expressed.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a coating method used to express the appearance of natural stone.

[Jumei technology]

Natural stones such as marble have traditionally been used as building materials, but natural stones have drawbacks such as being heavy, easily cracked, difficult to construct, susceptible to chemicals such as acids, and susceptible to freezing damage due to water absorption. Recently, artificial stones such as artificial marble, which is formed by applying a stone horizontal pattern similar to that of marble on the surface of a base material, are being used instead of natural stone. The most widely used method for creating stone patterns is to print the pattern on the surface of the base material.

[Problem to be solved by the invention 1] However, when applying a wedge pattern using the printing method as described above, since a printing plate is made and the printing is performed using this plate, there are various problems such as the following. there were. ■Prepress requires a lot of time and money. ■The pattern can only be printed with a uniform pattern made by plate making, and it is not possible to express the various wedge shapes that are different from that of natural marble. If you want to express various aspects, you will need many versions. ■You can only print on a base material that is sized to match the size of the plate, so you cannot use a large base material. ■If the base material has irregularities such as engineering bosses, it cannot be printed and cannot be used. The present invention has been made in view of the above points, and it is possible to express a non-uniform pattern without using a printing method. The purpose is to provide a coating method that can form a horizontal pattern regardless of the presence or absence. [Means for Solving the Problems] The coating method according to the present invention includes forming a base coating film 2 on the surface of a base material 1, and then applying a dye 3 to the entire surface on the base coating [I2]. The method is characterized in that after a plurality of lines of solvent 4 are applied on the dye 3 so that the dye 3 is moved by the solvent 4, a clear top coat film 5 is further formed thereon.

[For use]

In the present invention, the dye 3 is applied on the base coating [12] and the solvent 4 is applied on the dye 3, so that the solvent 4 acts as a carrier and moves the dye 3 to form a linear shape. Dye 3 is collected locally to form areas with more and less amount of dye 3, and a stone wedge shape can be expressed by changing the shading of the color pattern. Since this stone pattern is not the same due to the spreading of the solvent 4, the pattern is not uniform.

【Example】

The present invention will be explained in detail below using examples. As the base material 1, metal plates such as aluminum plates, stainless steel plates, iron plates, etc.
Inorganic boards such as asbestos cement boards, calcium silicate boards, and gypsum slag boards, wood boards such as plywood and wood boards, and resin boards such as FRP boards can be used. There is no problem even if empos are formed on the surface of this base material 1, but since marble is usually used with a smooth finish, when used as artificial marble, the surface must be smooth. It is preferable to use the formed base material 1. First, in the base coloring step, a base coating film (base coat coating film) 2 is applied and formed on the surface of the base material 1. The purpose of the base coating film 2 is to hide or color the base color of the base material 1, and it is preferable to use an enamel-based paint that has concealing properties and coloring effects. Painting is Rollhuter and 7
It can be done by any method using low coater spray etc. alone or in combination. After forming the base coating lI2 on the surface of the base material 1 in this manner, a film of the dye 3 is formed on the base coating film 2. dye 3
By dissolving the dye in a solvent and applying it on the base coat 2, it is possible to form a film of the dye 3 with a uniform thickness as shown in FIG. 2(a). As the other solvent, organic solvents such as ester-based and ketone-based solvents can be used. For example, dye 3 is dissolved in a ratio of about 3 parts by weight to 100 parts by weight of the solvent. It is preferable to form a film of dye 3 with a dry film thickness of about 1 μm by coating using a roll coater or spray. Next, after the solvent used to apply the dye 3 is vaporized and blown away, the base material 1 is placed so that the dye 3 film is on the upper surface, and the solvent 4 is applied onto the dye 3 film. Solvent 4 is shown in Figure 2 (b
), it is applied continuously in multiple lines at predetermined intervals. 7. Continuously drop the solvent 4 from multiple locations on the head 8 of a coating device such as a low coater, and move the base material 1 in the direction of arrow A with respect to the head 8, or By moving the head 8 in the direction of the arrow, the solvent 4 can be applied in a plurality of parallel lines. As this solvent 4,
It is preferable to use ester-based, ketone-based, or alcohol-based organic solvents, i.e., liquids with low surface tension and low boiling points (they can be used alone or in combination, but they can be collected and reused). If so, it is best to use one type alone. And like this, add solvent 4 to dye 3
When the solvent 4 is applied in multiple lines on the film, as the linearly applied solvent 4 spreads, the solvent 4 spreads as shown in FIG. 1(a).
acts as a carrier and moves the dye 3, and the adjacent solvent 4
The dye 3 is carried between the and the solvent 4 and collected in a linear shape, and the thicker parts and thinner parts of the dye 3 are formed alternately in a linear manner, and the color shading becomes linear. will be formed. Since the solvent 4 evaporates in a short time after being applied, the dye 3 does not dissolve in the solvent 4.
It is transported on a . Therefore, it is preferable that the solvent 4 has a not very high dissolving power for the dye 3. In particular, at the portion where adjacent solvents 4 and 4 intersect, the thickness of the dye 3 becomes thicker and darker. When the solvent 4 is evaporated (volatilized), the dye 3 remains in a linearly unevenly distributed state as shown in FIG. In this case, the color of the base coating film 2 mainly appears, and the color of dye 3 mainly appears in the areas where there is a lot of dye 3. By contrasting the colors, it is possible to create a marble wedge-like stone with a subtle depth that cannot be obtained with printing methods. It is important to express patterns. Here, depending on the amount of linearly applied solvent 4, the width at the time of application, the spacing between the solvents 4 to be applied, etc., the dye 3
The state of movement changes, and the barracks where solvent 4 spreads also changes each time, and the state of uneven distribution of dye 3 changes, making it possible to change the shading and the condition of the color. , it is possible to express a non-uniform linear pattern. By sending the head 8 of the coating device for the base material 1 or the solvent 4 parallel to both gA edges of the base material 1, a linear pattern as shown in FIG. 3(a) can be expressed.
Further, by sending the head 8 of the coating device for the base material 1 or the solvent 4 in a diagonal direction with respect to both green sides of the base material 1, a diagonal pattern as shown in FIG. 3(b) can be expressed. As described above, the solvent 4 is applied in a linear manner to form a pattern with the dye 3, and after this solvent 4 is blown off, a top coat film 5 is formed thereon as shown in FIG. 1(c). ．． The top coat film 5 is formed to impart surface hardness, light resistance, chemical resistance, moisture resistance, etc., and to obtain depth of the pattern, surface gloss, surface smoothness, etc. It is preferable to use a 28L type clear paint such as polyester, acrylic, or urethane, or an ultraviolet curing type. Also, as this clear paint, Colorak+77
- It is preferable to form the color clear top coat film 5 using a material. Color clear paint is made by adding coloring pigments to regular clear paint, and it has both a coloring effect and transparency, and can emphasize the depth of the pattern. Therefore, it is suitable for top coat coating. By making the film 5 clear in color, it is possible to express the depth of the pattern and the change in color even more than if it were made with transparent clear. In order to effectively create more depth, it is best to apply multiple coats to create a thick top coat. The coating for forming the top coat film 5 is carried out using an a-le coater or 7
It can be done by any method using a low coater, spray, etc. alone or in combination. In addition, in order to eliminate foreign objects, air bubbles, and minute irregularities on the surface, the surface of the top coat IiI5 can be polished to give it an even greater sense of depth.

【Effect of the invention】

As described above, in the present invention, after forming a base coat on the surface of the base material, dye is applied almost entirely on the base coat, and a plurality of linear lines of solvent are applied onto the dye. After applying it to the surface and moving the dye using a solvent, we formed a clear top coat on top of this, so the solvent applied in a linear manner acts as a carrier and moves the dye, causing the dye to move. By alternating lines with areas with a lot of color and areas with a small amount of color, it is possible to create horizontal expressions such as stone patterns by contrasting the shading of the linear color pattern. It is possible to form a pattern with a unique feel, and since the pattern does not become the same depending on how the solvent is applied and how it spreads, it is possible to create a non-uniform pattern. In addition, since a wedge-like expression can be created by applying dye and solvent, there is no need for plate making as is the case with printing methods, and it is possible to form patterns regardless of the size of the substrate or the presence or absence of irregularities. It is possible.

[Brief explanation of the drawing]

FIGS. 1(a), (b), and (c) are cross-sectional views at each step of the instant embodiment of the present invention, FIGS. 2(a) and (b) are cross-sectional views and perspective views at each of the same steps, and FIG. Figures (a) and (b) are plan views of the same. 1 is a base material, 2 is a base coating film, 3 is a dye, 4 is a solvent, and 5 is a top coat coating film.

Claims (1)

[Claims] (1) After forming a base coat on the surface of the base material, apply dye almost entirely on the base coat, then apply a solvent on top of the dye in multiple lines and move the dye using the solvent. A coating method characterized by further forming a clear top coat film on top of the coating.