JP7428486B2 - Method of forming decorative coating surface - Google Patents

Description

The present invention relates to a novel method for forming a decorative coating surface.

BACKGROUND OF THE INVENTION Conventionally, decorative coatings having various patterns have been formed on walls of buildings, civil engineering structures, etc. Particularly in recent years, as many highly designed buildings are being designed, various decorative coatings such as natural stone, wood grain, metal, leather, ceramic (glaze), antique, etc. are in demand. Ru. An example of such a decorative coating is a decorative coating in which a pattern is formed by partially overlaying a plurality of coating materials.

For example, Patent Document 1 describes a method in which a colored base paint is applied to the entire surface, and then a plurality of colored paints of different colors are applied to the surface in spots to create a multicolored pattern. However, in Patent Document 1, the speckled pattern may have a monotonous and artificial finish.

Japanese Patent Application Publication No. 2000-140750

The present invention was made in view of these problems, and an object of the present invention is to provide a method for forming a highly aesthetically pleasing decorative coating surface having a complex and natural pattern.

In order to solve these problems, the inventors of the present invention, as a result of intensive studies, applied a first coating material to the entire surface to be coated, formed a specific first coating, and then applied a second coating material to the entire surface. We came up with a method for forming a decorative coating surface that is applied continuously, and completed the present invention.

That is, the present invention has the following features.
1. Spreading the first coating material in a random direction on the surface to be coated and applying it to the entire surface to form a first coating;
applying a second coating material discontinuously on the first coating to form a second coating;
including;
The first coating material is a metallic coating material containing a scaly pigment,
The first coating is a coating with non-uniform color tone and/or gloss,
The second coating material is a metallic coating material containing a scaly pigment.
A method for forming a decorative film surface, characterized by:
2. 2. The method for forming a decorative coating surface according to claim 1, wherein a roller, a brush, or a pressing tool is used as an application tool when applying the first coating material.

The present invention includes a step of applying a first coating material to the entire surface of the surface to be coated to form a first coating, and a step of discontinuously applying a second coating material on the first coating to form a second coating. Since the first coating is a coating with non-uniform color tone and/or gloss, it is possible to obtain a highly aesthetic decorative coating surface having a complex and natural pattern.

FIG. 1 is a front view (I) and a cross-sectional view (II) showing an example of a decorative coating surface formed according to the present invention. FIG. 2 is a sectional view showing an example of a pressing tool that can be used in the present invention. FIG. 3 is a sectional view showing an example of a roller that can be used in the present invention. FIG. 4 is a front view showing an example of a decorative coating surface formed according to the present invention.

1. Decorative coating surface 1a. Colored area A
1b. Colored area B
1c. Colored area C
11. First coating 12. Second coating 2. Pressing tools 2a to 2e. Spongy material 2f. Height direction 3. Rollers 3a to 3e. Spongy material 3f. Cylinder outer circumferential surface 3g. Cylinder outer diameter direction
4. Painted surface

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated.

The present invention includes a step of applying a first coating material to the entire surface of the surface to be coated to form a first coating, and a step of discontinuously applying a second coating material on the first coating to form a second coating. The first coating is characterized in that the first coating is a coating with non-uniform color tone and/or gloss. When the decorative coating surface formed by the present invention is viewed from the front, the first coating and the second coating are mixed to form an intricate pattern.

FIG. 1 shows an example of a decorative coating surface formed according to the present invention [FIG. 1 (I): front view, (II): sectional view taken along line X-X']. According to the method for forming a decorative coating surface of the present invention, when viewed from the front as shown in FIG. 1(I), colored area A [FIG. 1(I): 1a] and colored area B [FIG. 1(I)] :1b] is obtained. As shown in Fig. 1 (II), this film is formed by forming a first film [Fig. 1 (II): 11] on the entire surface of the coated surface [Fig. 1 (II): 4], and then The second coating [Fig. 1 (II): 12] is laminated discontinuously, and when viewed from the front, the first coating part is the colored area A, and the laminated part of the first coating and the second coating is visually recognized as colored region B. Further, since the color tone and/or gloss of the colored area A by the first coating is non-uniform, it is possible to form a highly aesthetically pleasing decorative coating surface having a complex and natural pattern.

The method for forming the decorative coating surface shown in FIG. 1 will be described below as an example.

The method for forming the decorative coating surface shown in FIG. 1 is as follows:
(1st step) A step of applying the first coating material to the entire surface to form a first coating (2nd step) Applying the second coating material discontinuously on the first coating. The method includes a step of applying the coating to form a second coating. In this case, for example, the first coating forms a colored region A [FIG. 1(I): 1a], and the second coating forms a colored region B [FIG. 1(I): 1b].

In the first step, the first coating formed of the first coating material is a coating with non-uniform color tone and/or gloss, and is characterized in that it is formed of one type of coating material. In the present invention, "non-uniform color tone" refers to a region in which at least two or more different color tones are visible in the first coating formed on the surface to be coated. More specifically, areas in which the color difference (ΔE) is preferably 0.5 or more (more preferably 1 or more) coexist. The upper limit of the color difference is not particularly limited, but is preferably 90 or less, and can be set depending on the desired design. For example, when creating a calm design with a sense of unity while providing contrast, the upper limit of the color difference (ΔE) is preferably 20 or less. On the other hand, when forming an accent design with clear contrast between colored regions, it is preferable that the color difference (ΔE) is greater than 20 and less than or equal to 90.

In addition, "non-uniform gloss" means that in the first coating formed on the surface to be coated, at least two regions with different gloss levels are visible. More specifically, the difference in glossiness is preferably 1 or more (more preferably 2 or more). The upper limit of the difference in glossiness is preferably 90 or less (more preferably 60 or less). By having a difference in glossiness, it is possible to form a highly aesthetically pleasing coating having contrast and three-dimensional shadows.

Note that the color difference (ΔE) in the present invention is a value measured using a color difference meter. Specifically, the L ^* value, a ^* value, and b ^* value of the portions of the formed film having different tones are measured, and the values can be calculated using the following formula.
<Formula> △E={(L ^*1 - L ^*2 ) ² + (a ^*1 - a ^*2 ) ² + (b ^*1 - b ^*2 ) ² } ^0.5
(In the formula, L ^*1 , a ^*1 , b ^*1 are the L ^* , a ^* , b* of the first measurement point, respectively.L ^*2 , a ^{* 2} , b ^*2 are the L of the second measurement point, respectively. ^* , a ^* , b ^* )

Further, "glossiness" is a value measured according to JIS K5600-4-7 "specular glossiness". Specifically, it is a value obtained by measuring the specular glossiness (measured at a measurement angle of 60 degrees) of portions of the formed film with different glossiness.

The first coating having non-uniform color tone and/or gloss as described above is, for example,
(I) Type of first coating material (e.g., multicolored paint, special pigment-containing coating material, etc.);
(II) Application method of the first coating material (e.g., application tool, application thickness, etc.);
(III) Type of surface to be coated (e.g. uneven pattern, material, surface texture, suction property, repellency, etc.);
and a combination thereof. In the present invention, a method combining the above (I) and (II) is particularly suitable. suitable.

The amount of the first coating material to be applied may be set appropriately taking into consideration the type, condition, finish, etc. of the surface to be coated, but is preferably 30 to 500 g/m ² (more preferably 80 to 400 g/m ² , More preferably, it is 90 to 300 g/m ² ). When the amount of the first coating material applied satisfies the above range, a continuous film that covers the entire surface to be coated is likely to be formed. Further, the coating amount of the first coating material applied to the entire surface of the coated surface is preferably 10 to 500 g/m ² , more preferably 20 to 400 g/m ² in terms of solid content. In the present invention, "a to b" has the same meaning as "a or more and b or less".

The first coating material can be diluted with various solvents during application. The dilution ratio of the first coating material is preferably 0 to 50% by weight (more preferably 1 to 50% by weight, more preferably 2 to 40% by weight) based on the coating material. In this case, a film with non-uniform color tone and/or gloss can be more efficiently formed. Further, the viscosity of the first coating material during application is preferably 0.1 to 8 Pa·s (more preferably 0.5 to 6 Pa·s). In such a case, a continuous film that covers the entire surface of the coated surface is likely to be formed, and a film that is uneven in color and/or gloss is likely to be formed. Note that the viscosity is a value (pointer value at the 4th rotation) measured using a BH type viscometer (rotation speed 20 rpm) under standard conditions (temperature 23° C., relative humidity 50%).

When applying the first coating material, it is sufficient to apply the first coating material to the entire surface to be coated, and examples of application equipment include spray, roller, brush (brush), etc. etc.), pressing tools (including hitting tools, etc.), etc. can be used. Among these, examples of the roller include a fibrous roller and a porous (spongy) roller, and examples of the pressing tool include those made of sponge, felt, woven fabric, non-woven fabric, and the like. In the present invention, it is particularly preferable to use a roller and/or a brush, and more preferably to spread the coating in random directions over the entire surface to be coated. This tends to result in the formation of a film with non-uniform color and/or gloss.

In the second step, the second coating material applied onto the first coating is not particularly limited, and various coating materials can be used. In the present invention, it is preferable to use a coating material of a different color from the first coating material as the second coating material. Note that a different color means that the color difference (ΔE) between the first coating material and the second coating material is preferably 3 or more (more preferably 5 or more). The upper limit of the color difference is not particularly limited, but is preferably 90 or less, and can be set depending on the desired design. For example, when creating a calm design with a sense of unity while providing contrast, the upper limit of the color difference (ΔE) is preferably 20 or less. On the other hand, when forming an accent design with clear contrast between colored regions, it is preferable that the color difference (ΔE) is greater than 20 and less than or equal to 90.

Furthermore, the second covering material may have a different glossiness from that of the first covering material. The difference in glossiness is preferably 2 or more (more preferably 3 or more, even more preferably 5 or more). The upper limit of the difference in glossiness is preferably 90 or less (more preferably 60 or less). By having a difference in glossiness, it is possible to form a highly aesthetically pleasing coating having contrast and three-dimensional shadows.

Note that the color difference (ΔE) between the first coating material and the second coating material is a value measured using a color difference meter. Specifically, each coating material was applied to a standard white paper using a film applicator with a gap of 250 μm, and the coated surface was placed horizontally under standard conditions (temperature 23 ° C., relative humidity 50%. The same applies hereinafter). It can be calculated using the following formula from the L ^* value, a ^* value, and b ^* value (average value of 10 or more measurement points) of the film when dried for a period of time.
<Formula> △E={(L ^*1 - L ^*2 ) ² + (a ^*1 - a ^*2 ) ² + (b ^*1 - b ^*2 ) ² } ^0.5
(In the formula, L ^*1 , a ^*1 , b ^*1 are the L ^* , a ^* , b* of the first coating material, respectively. L ^{*2 ,} a ^*2 , b ^*2 are the L of the second coating material, respectively. ^* , a ^* , b ^* )

Further, "glossiness" is a value measured according to JIS K5600-4-7 "specular glossiness". Specifically, the coating material was applied to one side of a glass plate using a film applicator with a gap of 150 μm, and the specular gloss when the coated surface was placed horizontally and dried under standard conditions for 48 hours (measured at an angle of 60 degrees, This is the value obtained by measuring the average value of 10 or more measurement points).

The amount of the second coating material to be applied may be set as appropriate depending on the desired finish (pattern, etc.), but it is preferable that the amount of the second coating material to be applied is smaller than that of the first coating material. It is 100 g/m ² or less (more preferably 5 to 90 g/m ² , even more preferably 10 to 80 g/m ² ). When the application amount of the second coating material satisfies the above range, a discontinuous coating is likely to be formed, and the first coating and the second coating are mixed to stably form a decorative coating surface having an intricate pattern. Can be done. Further, the coating amount of the discontinuously applied second coating material is preferably 100 g/m ² or less, more preferably 1 to 80 g/m ² , even more preferably 5 to 40 g/m 2 in terms of solid content. It is ² . In the present invention, it is preferable that the amount of the second coating material applied is smaller than the amount of the first coating material applied.

The second coating material can be diluted with various solvents during application. The dilution ratio of the second coating material is preferably 1 to 50% by weight (more preferably 2 to 40% by weight). This tends to result in the formation of a discontinuous film. Moreover, in the present invention, the dilution ratio of the second coating material can also be made smaller than the dilution ratio of the first coating material.

The viscosity of the second coating material during application is preferably 0.5 to 10 Pa·s (more preferably 1 to 9.5 Pa·s). In such a case, the application tool contains an appropriate amount of the coating material, and a discontinuous film is likely to be formed, thereby improving the design. Moreover, the viscosity of the second coating material can also be made higher than the viscosity of the first coating material.

In the second step, the timing of applying the second coating material is not particularly limited, but it is preferably after the first coating material (the previously applied coating material) has become non-fluid. Thereby, each coating material is difficult to mix, a stable finish can be imparted, and a decorative coating with high aesthetics can be obtained. In particular, remarkable effects can be obtained when the surface to be coated is large. In the present invention, the term "non-fluid state" refers to a state in which fluidity of the film is lost after the first coating material is applied, and specifically, it refers to a state where the fluidity of the film is lost after the first coating material is applied. This refers to the state in which coating materials have dried and hardened to the extent that they do not bleed, or that the coating materials do not mix with each other. This "non-fluid state" includes states such as dry to the touch, semi-cured dry, and cured dry as defined in JIS K5400. In the present invention, it is preferable to apply the second coating material after the first coating material is dry to the touch (more preferably after semi-hardening and drying, still more preferably after hardening and drying). In the present invention, drying and curing may preferably be carried out at room temperature (5 to 40°C).

As an application tool for applying the second coating material, for example, a spray, a roller, a brush (including a brush, etc.), a pressing tool (including a hammering tool, etc.), etc. can be used. Among these, examples of the roller include a fibrous roller and a porous (spongy) roller, and examples of the pressing tool include those made of sponge, felt, woven fabric, non-woven fabric, and the like.

In the above second step, in the step of discontinuously applying the second coating material, use a roller, brush, pressing tool, etc. to apply the coating material partially onto the surface to be coated. Just attach it. To apply the second coating material discontinuously, it is sufficient to bring the application tool into contact with the surface to be coated intermittently (partially). For example, applying by pressing, applying by tapping, etc. A method of applying the product while rubbing, a method of applying the product while rubbing, etc. can be adopted. When applying the coating material discontinuously, an applicator having a spongy material is particularly suitable, and a roller or a pressing tool having a spongy material is more suitable. In addition, when using a roller having a spongy material, it is preferable to roll the coating material discontinuously, that is, to contact and roll the coating material intermittently (partially) on the surface to be coated. At this time, it is preferable that the rollers contact and roll in random directions. By using such an applicator, the effect of making the boundaries between colored areas non-linear (intricate) can be further enhanced, and the aesthetic appearance can be further improved.

As the sponge material, for example, a porous sponge-like resin such as acrylic resin, urethane resin, ester resin, or ethylene resin can be used. The hardness of the sponge material is preferably 10 to 3000N, more preferably 20 to 2000N, even more preferably 30 to 1500N. The density of the sponge material is preferably 1 to 300 kg/m ³ , more preferably 3 to 200 kg/m ³ , and even more preferably 5 to 150 kg/m ³ . The term "hardness" used herein refers to the value of hardness (C method) measured from the force when compressing a test piece to a thickness of 40%, in accordance with JIS K6400-2. Moreover, "density" is the value of the apparent density calculated from the weight and dimensions of the test piece according to JIS K7222.

The shape of the sponge material is, for example, a polygonal shape such as a triangle, square, diamond, pentagon, or hexagon, a curved shape such as a circle, an ellipse, a drop shape, or an irregular shape. Furthermore, shapes that are a combination of these can also be used. The size may be appropriately set depending on the desired pattern.

As the sponge material, one type of sponge material that satisfies the above conditions can be used, but for example, at least two or more types of sponge materials with different hardness and/or density as shown in Fig. 2 (Fig. 2: 2a to 2e) are mixed randomly, or at least two or more types of sponge materials (3a to 3e) with different hardness and/or density as shown in FIG. It is preferable to apply with a roller mixed in 3f). In such an applicator, at least one type (preferably two or more types) of sponge material satisfies the above conditions. By using such a specific application tool, the finish quality, aesthetic appearance, etc. can be further improved.

In FIGS. 2 and 3, it is more preferable that the sponge material is fixed in a stacked manner. Furthermore, it is even more preferable that a large number of spongy materials be compression-molded so that they are mixed randomly.

The sponge material shown in FIGS. 2 and 3 has an irregular three-dimensional outer shape, and the individual size thereof is preferably 1 to 30 mm (more preferably 2 to 20 mm). In the present invention, it is preferable that a large number of sponge materials of different sizes coexist. In such a case, irregular irregularities are likely to be formed between the sponge materials, so that the effects of the present invention can be further enhanced. Note that the "size" here refers to the longest axis of the outer shape, and is measured by, for example, sieving with a sieve having squares of a predetermined size on one side. The thickness of the sponge material (Figure 2: thickness in the 2f direction, Figure 3: thickness in the 3g direction) is preferably 2 to 50 mm (more preferably 3 to 50 mm), although it depends on the size of the individual sponge material. 30mm).

FIG. 4 shows another example (front view) of a decorative coating surface formed by the method for forming a decorative coating surface of the present invention. Figure 4 shows that three types of coating materials, a first coating material, a second coating material, and a third coating material, are applied in order, and a colored area A is colored by the first coating material, and a colored area A is colored by the second coating material. A decorative coating surface having a colored area B and a colored area C (FIG. 4: 1a to 1c) formed by a third coating material is formed. The decorative coating surface shown in FIG. 4 may be formed by the same method as in the case of FIG. 1, for example,
(1st step) A step of applying the first coating material to the entire surface to form a first coating (2nd step) Applying the second coating material discontinuously on the first coating. It can be formed by a method including a step of applying the second coating (third step) and a step of discontinuously applying the third coating material.

The coating amount of the third coating material is preferably 100 g/m ² or less (more preferably 2 to 80 g/m ² , even more preferably 5 to 60 g/m ² ). Further, it is preferable that the amount of the third coating material applied is smaller than the amount of the first coating material and the second coating material applied. Further, the coating amount of the third coating material discontinuously applied is preferably 100 g/m ² or less, more preferably 1 to 60 g/m ² , even more preferably 2 to 30 g/m 2 in terms of solid content. ² , and it is preferable that the amount of coating is smaller than that of the first coating material and the second coating material. Also, when using four or more different types of coating materials, apply the coating materials (first coating material, second coating material, third coating material, fourth coating material, etc.) in the same manner as above. (first step, second step, third step, fourth step, etc.), forming a decorative coating surface having colored areas A, colored areas B, colored areas C, colored areas D, etc. do it.

In addition, in the method for forming a decorative coating surface of the present invention, after forming the decorative coating surface through the above steps, at least one coating material used in each step is selected and, for example, a roller, brush, pressing tool, etc. It can be applied discontinuously to adjust the pattern. This makes it possible to obtain a highly aesthetically pleasing decorative coating surface with good pattern balance (arrangement).

In the method for forming a decorative coating surface of the present invention, a clear coating material is applied to the outermost surface to form a clear layer for the purpose of surface protection, improvement of weather resistance, stain resistance, etc., as long as it does not impede the effects of the present invention. It is also possible to provide one.

<Surface to be coated>
The surface to be coated in the present invention is preferably a base material surface of a building, a civil engineering structure, etc., particularly a base material constituting the surfaces of internal and external walls, ceilings, fittings, etc. Such base materials include, for example, gypsum board, concrete, mortar, porcelain tile, brick, cement board, fiber-mixed cement board, cement calcium silicate board, perlite board, ALC board, siding board, extrusion board, plywood, Examples include wood plates, steel plates, plastic plates, glass plates, etc. The surface of these base materials may be subjected to some kind of surface treatment (e.g., sealer, surfacer, filler, etc.), or may have a coating already formed on it, or may have wallpaper pasted on it. .

<Coating material>
First, common features of the coating materials (first coating material, second coating material, third coating material, etc.) of the present invention will be explained.
As the coating material in the present invention, one containing a resin and a pigment can be used. In the present invention, color, gloss, etc. can be set by adjusting the type of pigment, mixing ratio, etc. The mixing ratio of the resin and the pigment is preferably 5 to 500 parts by weight (more preferably 10 to 400 parts by weight) per 100 parts by weight of the resin solid content.

Examples of the resin include water-soluble resins, water-dispersible resins, solvent-soluble resins, solvent-free resins, non-aqueous dispersible resins, and composites thereof. These may have crosslinking reactivity, and their form is not particularly limited, and may be either a one-part type or a two-part type. In the present invention, water-dispersible resins and/or water-soluble resins are particularly preferably used. Examples of usable resins include cellulose, polyvinyl alcohol, ethylene resin, vinyl acetate resin, polyester resin, alkyd resin, vinyl chloride resin, epoxy resin, silicone resin, acrylic resin, urethane resin, acrylic silicone resin, and fluorine resin. Examples include resins, and composite systems thereof. In the present invention, a hydraulic binder such as cement can be used as long as it does not impede the effects of the present invention, but it is desirable not to use it because it may limit the color of the coating.

As the pigment, known coloring pigments, extender pigments, etc. can be used. Among these, examples of coloring pigments include titanium oxide, zinc oxide, carbon black, lamp black, bone black, graphite, black iron oxide, copper chromium black, cobalt black, copper manganese iron black, iron oxide, molybdate orange, and permanent pigment. Red, permanent carmine, anthraquinone red, perylene red, quinacridone red, yellow iron oxide, titanium yellow, fast yellow, benzimidazolone yellow, chrome green, cobalt green, phthalocyanine green, ultramarine, navy blue, cobalt blue, phthalocyanine blue, quinacridone violet , dioxazine violet, colored mica, metal flake pigments, pearl pigments, glitter pigments, and the like. By using one or more of these coloring pigments, it can be colored to any desired hue.

Examples of extender pigments include heavy calcium carbonate, agarite, light calcium carbonate, white carbon, talc, mica, kaolin, clay, china clay, china clay, diatomaceous earth, barite powder, barium sulfate, precipitated barium sulfate, and silica sand. , silica powder, quartz powder, resin beads, glass beads, hollow balloons, etc., and one or more of these can be used. By appropriately setting the type of extender pigment, mixing ratio, etc., it is possible to adjust the glossiness of the coating material to a desired level.

In addition to the above-mentioned components, the coating material of the present invention may contain known additives, such as aggregates, dyes, thickeners, wetting agents, antifreeze agents, and film-forming agents, within a range that does not significantly impede the effects of the present invention. It may contain agents, preservatives, anti-mold agents, anti-algae agents, anti-bacterial agents, dispersants, anti-foaming agents, ultraviolet absorbers, light stabilizers, antioxidants, catalysts, diluting solvents and the like. The coating material can be manufactured by uniformly mixing the above-mentioned components using a conventional method.

As the first coating material of the present invention, any material containing the above-mentioned components can be used, but it is preferable to use a material that can form a film with non-uniform color and/or gloss upon application of the first coating material. . As such a first coating material, for example, a multicolored paint, a coating material containing a special pigment, etc. are suitable, and a coating material containing a scaly pigment is particularly preferable as the special pigment. Examples of the scaly pigments include colored mica, metal flake pigments, pearl pigments, glitter pigments, mica, and the like, and one or more of these can be used. In the present invention, it is particularly preferable to include a metal flake pigment (more preferably an aluminum flake pigment). When such flaky pigments are included, a film with uneven color tone and/or gloss is likely to be formed due to random orientation of the flaky pigments, agglomeration or uneven distribution of the flaky pigments, and complex and natural coatings. A pattern can be formed. Further, the coating formed in this manner can exhibit a calm metallic appearance, and is therefore suitable for use in buildings, civil engineering structures, and the like.

The mixing ratio of the resin and the flaky pigment is preferably 5 to 200 parts by weight (more preferably 10 to 100 parts by weight) per 100 parts by weight of the resin solid content. In such a case, a film with non-uniform color tone and/or gloss is likely to be formed, and the effects of the present invention can be further enhanced.

As the second covering material of the present invention, one containing the above-mentioned constituent components can be used, and it may be the same kind as the first covering material, or it may be different. In the present invention, it is preferable that the second coating material contains the above-mentioned scaly pigment. As a result, the formed second film also becomes a film with non-uniform color tone and/or gloss, making it possible to form an even more complex and natural pattern, thereby improving the aesthetic appearance.

The heating residue of the coating material is preferably 10% by weight or more, more preferably 15 to 80% by weight. Note that the heating residue is a value measured by the method of JIS K5601-1-2, the heating temperature is 105° C., and the heating time is 60 minutes.

Examples are shown below to clarify the features of the present invention.

The following materials were prepared as covering materials.

・Coating material 1-1
Acrylic resin emulsion, red metallic coating material mainly composed of pigments (aluminum flake pigment, red iron oxide) (heating residue: 20% by weight, viscosity: 2.0 Pa・s, pigment ratio: resin solid content 100% by weight) (35 parts by weight)

・Coating material 1-2
Silver metallic coating material containing acrylic resin emulsion pigment (aluminum flake pigment) as main component (heating residue: 24% by weight, viscosity: 3.6 Pa・s, pigment ratio: 38 parts by weight per 100 parts by weight of resin solid content) Department)

・Coating material 2-1
Acrylic resin emulsion, beige metallic coating material mainly composed of pigments (aluminum flake pigment, yellow iron oxide, titanium oxide) (heating residue: 20% by weight, viscosity: 2.3 Pa・s, pigment ratio) : 38 parts by weight per 100 parts by weight of resin solids)

・Coating material 2-2
Golden metallic coating material containing acrylic resin emulsion pigment (aluminum flake pigment, yellow iron oxide) as main component (heating residue: 24% by weight, viscosity: 3.8 Pa・s, pigment ratio: resin solid content) 36 parts by weight per 100 parts by weight)

(Example 1)
As a first step, coating material 1-1 was applied to the entire surface of the base material (slate board) in a random direction with a coating amount of 120 g/ ^m2 using a roller (using a fibrous roller), and the condition was more than dry to the touch. It was dried for 2 hours to form a red metal-like coating film having an uneven pattern with a non-uniform color tone. Next, in the second step, coating material 1-2 was applied discontinuously at a coating amount of 40 g/m ² [using a pressing tool made of sponge material (hardness 110 to 140 N, density 15 to 50 kg/m ³ )]. ] and dried for 24 hours. All painting and drying were performed under standard conditions. By the above method, a highly aesthetically pleasing decorative coating surface was obtained in which a reddish metallic-like region with an uneven pattern and a silvery metallic-like region were mixed in a complex manner.

(Example 2)
As a first step, coating material 2-1 is applied to the base material (slate board) in a random direction over the entire surface with a coating amount of 120 g/m ² (using a fibrous roller), until it is more than dry to the touch. After drying for 2 hours, a beige metal-like coating film having an uneven color tone was formed. Next, as a second step, coating material 2-2 was applied discontinuously with a roller at an application amount of 50 g/m ² (a roller having five types of sponge materials as shown in FIG. 3 was used. Sponge material 3a: Hardness 45-60N, density 50-100kg/m ³ , sponge material 3b: hardness 75-110N, density 15-30kg/m ³ , sponge material 3c: hardness 110-140N, density 15-50kg/m ³ , sponge Material 3d: hardness 110 to 300 N, density 30 to 85 kg/m ³ Sponge material 3e: hardness 1000 to 1500 N, density 10 to 20 kg/m ³ ), and dried for 24 hours. All painting and drying were performed under standard conditions. By the above method, a highly aesthetically pleasing decorative coating surface was obtained in which beige metallic areas and golden metallic areas with uneven patterns were mixed in a complex manner.

Claims (2)

Spreading the first coating material in a random direction on the surface to be coated and applying it to the entire surface to form a first coating;
applying a second coating material discontinuously on the first coating to form a second coating;
including;
The first coating material is a metallic coating material containing a scaly pigment,
The first coating is a coating with non-uniform color tone and/or gloss,
The second coating material is a metallic coating material containing a scaly pigment.
A method for forming a decorative film surface, characterized by: 2. The method for forming a decorative coating surface according to claim 1, wherein a roller, a brush, or a pressing tool is used as an application tool when applying the first coating material.

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