JP2023112021A - Method for forming decorative coating surface - Google Patents

Abstract

To provide a method for forming a decorative coating surface that has a complicated natural pattern and that has high beauty.SOLUTION: A method for forming a decorative coating surface according to the present invention includes the steps of: forming a first coating by applying a first coating material to the whole coating surface; and forming a second coating by discontinuously applying a second coating material onto the first coating. As an applicator for use in applying the second coating material, used is a roller or a presser. The first coating is a coating having uneven color tones and/or glossiness.SELECTED DRAWING: None

Description

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

2. Description of the Related Art Conventionally, decorative coatings having various patterns have been formed on walls of buildings, civil engineering structures, and the like. Especially in recent years, as many buildings with high designs are designed, various decorative coatings such as natural stone tone, wood grain tone, metal tone, leather tone, ceramics (glaze) tone, antique tone, etc. be. An example of such a decorative coating is a decorative coating in which a plurality of coating materials are partially coated to form a pattern.

For example, Patent Literature 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 a spotted manner to finish a colorful pattern. However, in Patent Document 1, the speckled pattern may be monotonous and have an artificial finish.

JP-A-2000-140750

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for forming a highly aesthetically pleasing decorative coated surface having a complex and natural pattern.

In order to solve such a problem, the present inventors have made extensive studies and found that the surface to be coated is coated with the first coating material on the entire surface to form a specific first coating, and then the second coating material is applied. The inventors have devised a method for forming a decorative film surface that is continuously applied, and have completed the present invention.

That is, the present invention has the following features.
1. A step of applying the first coating material to the entire surface of the surface to be coated to form a first coating;
A step of discontinuously applying a second coating material on the first coating to form a second coating;
including
Using a roller or a pressing tool as an applicator for applying the second coating material,
A method for forming a decorative coating surface, wherein the first coating is a coating having non-uniform color tone and/or gloss.
2. 1. The applicator for applying the second coating material is a roller or pressing tool in which at least two types of sponge materials having different hardnesses and/or densities are randomly mixed. A method for forming the decorative coating surface described.
3 . 1. The first coating material is characterized in that it contains a scaly pigment. or 2. The method for forming the decorative coating surface according to 1.
4 . 1. The second coating material is characterized in that it contains a scaly pigment. or 2. The method for forming the decorative coating surface according to 1.

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 applying a second coating material discontinuously on the first coating to form a second coating. and the first coating is uneven in color tone and/or gloss, so that a highly aesthetically pleasing decorative coating surface with a complex and natural pattern can be obtained.

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

1. Decorative coating surface 1a. Colored area A
1b. Colored area B
1c. Colored area C
11. First coating 12 . Second coating2. pressing tools 2a-2e. sponge material 2f. Height direction3. Rollers 3a-3e. sponge material 3f. Cylindrical outer surface 3g. Cylindrical outer diameter direction
4. surface to be coated

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 applying a second coating material discontinuously on the first coating to form a second coating. and wherein the first coating is a coating with non-uniform color tone and/or gloss. The decorative coating surface formed by the present invention forms an intricate pattern in which the first coating and the second coating are mixed when viewed from the front.

FIG. 1 shows an example of the decorative coating surface formed by the present invention [FIG. 1(I): front view, (II): cross-sectional view of XX′ section]. According to the method of forming the decorative coating surface of the present invention, when viewed from the front as shown in FIG. : 1b] is mixed. As shown in FIG. 1(II), this coating is formed by forming a first coating [FIG. 1(II): 11] on the entire surface to be coated [FIG. 1(II): 4], and The second coating [FIG. 1 (II): 12] is discontinuously laminated, and when viewed from the front, the first coating is the colored region A, and the laminated portion of the first and second coatings is visually recognized as a colored region B. In addition, since the color tone and/or gloss of the colored region A by the first coating is non-uniform, it is possible to form a highly aesthetically pleasing decorative coated surface having a complex and natural pattern.

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

As a method for forming the decorative coating surface shown in FIG.
(First step) Step of applying the first coating material to the entire surface to be coated to form the first coating (Second step) Discontinuously applying the second coating material on the first coating Applying to form a second coating. In this case, for example, the first coating forms the colored region A [FIG. 1(I): 1a], and the second coating forms the colored region B [FIG. 1(I): 1b].

In the first step, the first coating formed from the first coating material is characterized by being a coating with non-uniform color tone and/or gloss and formed from one type of coating material. In the present invention, the term "non-uniform color tone" means that at least two regions with different color tones are visible in the first coating formed on the surface to be coated. More specifically, areas where the color difference (ΔE) is preferably 0.5 or more (more preferably 1 or more) coexist. Although the upper limit of the color difference is not particularly limited, it is preferably 90 or less, and can be set according to the desired design. For example, when creating a calm design with a sense of unity while imparting 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, the color difference (ΔE) is preferably more than 20 and 90 or less.

The term "non-uniform glossiness" means that at least two or more areas with different glossiness can be visually recognized in the first coating formed on the surface to be coated. More specifically, the glossiness difference 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 aesthetic coating having contrast and three-dimensional shadows.

In addition, 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 portions of the formed film having different color tones can be measured and calculated using the following formulas.
<Formula> ΔE = {(L ^{* 1} - L ^{* 2} ) ² + (a ^{* 1} - a ^{* 2} ) ² + (b ^{* 1} - b ^{* 2} ) ² } ^0.5
(In the formula, L ^*1 , a ^*1 , and b ^*1 are L ^* , a ^*, and b ^* at the first measurement point, respectively. L ^*2 , a ^*2 , and b ^*2 are L at 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 (measurement angle of 60 degrees) of portions of the formed film having different glossiness.

The first coating with uneven color tone and/or gloss as described above is, for example,
(I) the type of the first coating material (e.g., multicolored paint, special pigment-containing coating material, etc.),
(II) method of applying the first coating material (e.g., applicator, application thickness, etc.),
(III) type of surface to be coated (e.g. uneven pattern, material, surface texture, absorbability, repellency, etc.),
and can be formed from a combination thereof. In the present invention, the method of combining the above (I) and (II) is particularly preferable. preferred.

The amount of the first coating material to be applied may be appropriately set in consideration of the type, condition, finish, etc. of the surface to be coated, preferably 30 to 500 g/m ² (more preferably 80 to 400 g/m ² , More preferably 90 to 300 g/m ² ). When the coating amount of the first coating material satisfies the above range, a continuous film covering the entire surface to be coated is likely to be formed. Furthermore, the amount of the first coating material applied to the entire surface to be coated 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" is synonymous with "a or more and b or less".

The first coating material can be diluted with various solvents at the time of 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) relative to the coating material. In this case, it is possible to more efficiently form a coating with non-uniform color tone and/or gloss. Further, the viscosity of the first coating material when applied is preferably 0.1 to 8 Pa·s (more preferably 0.5 to 6 Pa·s). In such a case, a continuous film covering the entire surface of the surface to be coated tends to be formed, and a film with non-uniform color tone and/or gloss tends to be formed. The viscosity is a value (guideline value for the fourth 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 may be applied so that the first coating material adheres to the entire surface to be coated. etc.), a pressing tool (including a hitting tool, etc.), etc. can be used. Examples of rollers include fibrous rollers and porous (spongy) rollers. Examples of pressing tools include those having 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 it is more desirable to apply the composition to the entire surface by spreading it in random directions. This tends to result in the formation of coatings with non-uniform color tone 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 different in color from the first coating material as the second coating material. The different color means that the color difference (ΔE) between the first covering material and the second covering material is preferably 3 or more (more preferably 5 or more). Although the upper limit of the color difference is not particularly limited, it is preferably 90 or less, and can be set according to the desired design. For example, when creating a calm design with a sense of unity while imparting 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, the color difference (ΔE) is preferably more than 20 and 90 or less.

Also, the second coating material may have a glossiness different from that of the first coating material. The difference in glossiness is preferably 2 or more (more preferably 3 or more, still 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 aesthetic coating having contrast and three-dimensional shadows.

The color difference (ΔE) between the first coating material and the second coating material is a value measured using a colorimeter. 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 and the It can be calculated by 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 certain period of time.
<Formula> ΔE = {(L ^{* 1} - L ^{* 2} ) ² + (a ^{* 1} - a ^{* 2} ) ² + (b ^{* 1} - b ^{* 2} ) ² } ^0.5
(Wherein, L ^*1 , a ^*1 , b ^*1 are L ^* , a ^{* ,} b* of the first coating material, respectively. L*2, a ^*2 , b ^{* 2} are L*2 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 is applied to one side of the glass plate using a film applicator with a gap of 150 μm, and the coated surface is placed horizontally and dried for 48 hours under standard conditions. Specular glossiness (measurement angle 60 degrees, It is a value obtained by measuring the average value of 10 or more measurement points.

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

The second coating material can be diluted with various solvents at the time of application. The dilution ratio of the second coating material is preferably 1-50% by weight (more preferably 2-40% by weight). This tends to form a discontinuous coating. Further, in the present invention, the dilution ratio of the second coating material can be made smaller than the dilution ratio of the first coating material.

The viscosity of the second coating material when applied is preferably 0.5 to 10 Pa·s (more preferably 1 to 9.5 Pa·s). In such a case, the applicator contains an appropriate amount of the coating material, so that a discontinuous coating is likely to be formed, and the design can be enhanced. Also, the viscosity of the second coating material can 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 (previously applied coating material) becomes non-flowing. As a result, the coating materials are less likely to mix, a stable finish can be imparted, and a highly aesthetically pleasing decorative coating can be obtained. In particular, a remarkable effect can be obtained when the surface to be coated has a large area. In the present invention, the "non-fluid state" refers to a state in which the fluidity of the film is lost after the first coating material is applied, specifically, after the second coating material is applied. It refers to the state in which the coating material is dried and hardened to the extent that it does not bleed or the coating materials do not mix with each other. The "non-fluid state" includes states such as dry to the touch, semi-cured and dried, and cured and dried as defined in JIS K5400. In the present invention, it is preferable to apply the second coating material after the first coating material is dried to the touch (more preferably after semi-curing and drying, more preferably after curing and drying). In the present invention, drying and curing are preferably carried out at room temperature (5 to 40°C).

Examples of applicator tools for applying the second coating material include sprays, rollers, brushes (including brushes and the like), pressing tools (including tapping tools and the like), and the like. Examples of rollers include fibrous rollers and porous (spongy) rollers. Examples of pressing tools include those having sponge, felt, woven fabric, non-woven fabric, and the like.

In the second step, in the step of applying the second coating material discontinuously, for example, using a roller, a brush, a pressing tool, etc., is applied so that the coating material partially adheres to the surface to be coated. should be attached. In order to apply the second coating material discontinuously, the applicator may be brought into intermittent (partial) contact with the surface to be coated. A method of rubbing while applying can be adopted. For discontinuous application of the coating material, applicator devices having a sponge material are particularly preferred, and rollers or presses having a sponge material are more preferred. In addition, when a roller having a sponge material is used, it is preferable to apply the composition by rolling it discontinuously, that is, to intermittently (partially) contact and roll the surface to be coated. At this time, the rollers are preferably brought into contact and rolled in random directions. By using such an applicator, the effect of making the boundary between the colored regions non-linear (intricate state) is further enhanced, and the beauty can be further enhanced.

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

The shape of the sponge material may be, for example, a polygonal shape such as a triangle, quadrangle, rhombus, pentagon, or hexagon; etc., or a combination of these shapes can 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. 2a to 2e) are randomly mixed, and at least two types of sponge materials (Fig. 3: 3a to 3e) having different hardness and / or density as shown in Fig. 3 are used on the outer peripheral surface of the cylinder (Fig. 3: It is preferred to apply by a roller mixed in 3f). In such an applicator, at least one (preferably two or more) sponge materials should satisfy the above conditions. By using such a specific applicator, it is possible to further improve the finish, beauty and the like.

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

The sponge material shown in FIGS. 2 and 3 has an irregular three-dimensional shape, and the size of each piece 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 with different sizes are mixed. In such a case, since an irregular uneven shape is likely to be formed between the sponge materials, the effects of the present invention can be further enhanced. The "size" referred to here is the longest axis of the outer shape, and is measured by sieving with a sieve having squares of a predetermined size on one side, for example. The thickness of the sponge material (Fig. 2: thickness in 2f direction; Fig. 3: thickness in 3g direction) depends on the size of each sponge material, but is preferably 2 to 50 mm (more preferably 3 to 50 mm). 30 mm).

FIG. 4 shows another example (front view) of a decorative coated surface formed by the decorative coated surface forming method of the present invention. In FIG. 4, three types of coating materials, a first coating material, a second coating material, and a third coating material, are applied in order as coating materials, and a colored area A by the first coating material and a colored area A by the second coating material A decorative coated surface having a colored region B and a colored region C (FIG. 4: 1a to 1c) by the third coating material is formed. As a method for forming the decorative coating surface shown in FIG. 4, the same method as in the case of FIG. 1 may be used.
(First step) Step of applying the first coating material to the entire surface to be coated to form the first coating (Second step) Discontinuously applying the second coating material on the first coating It can be formed by a method including a step of applying and forming a second coating (third step) and a step of discontinuously applying a 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 , still more preferably 5 to 60 g/m ² ). Furthermore, it is preferable that the amount of the third coating material applied is less than the amounts of the first and second coating materials applied. In addition, the coating amount of the third coating material applied discontinuously is preferably 100 g/m ² or less, more preferably 1 to 60 g/m ² , further preferably 2 to 30 g/m 2 in terms of solid content. ² , which is less than the coating amount of the first coating material and the second coating material. Also, when four or more different coating materials are used, the coating materials (first coating material, second coating material, third coating material, fourth coating material, etc.) are applied in the same manner as described above. (first step, second step, third step, fourth step, etc.), colored region A, colored region B, colored region C, colored region D, . do it.

Further, in the method of forming the decorative coated surface of the present invention, after the decorative coated surface is formed by the above steps, at least one of the coating materials used in each step is selected and, for example, a roller, a brush, a pressing tool, or the like is applied. can be applied discontinuously to adjust the pattern. As a result, it is possible to obtain a highly aesthetically pleasing decorative coated surface with a well-balanced pattern (arrangement).

In the method of forming the decorative film surface of the present invention, a clear coating material is applied to the outermost surface for the purpose of surface protection, improvement of weather resistance, stain resistance, etc., as long as the effects of the present invention are not hindered. can also be provided.

<Paint surface>
The surface to be coated in the present invention is preferably a substrate surface of a building, a civil engineering structure, etc., particularly a substrate constituting a surface of an inner/outer wall, a ceiling, a fitting, or the like. Examples of such substrates include gypsum board, concrete, mortar, porcelain tile, brick, cement board, fiber-mixed cement board, cement calcium silicate board, perlite board, ALC board, siding board, extruded board, plywood, A wood plate, a steel plate, a plastic plate, a glass plate, and the like can be mentioned. The surface of these substrates may have been subjected to some surface treatment (for example, sealer, surfacer, filler, etc.), or may have a coating film already formed, or may have wallpaper attached. .

<Covering material>
Common matters of the covering materials of the present invention (the first covering material, the second covering material, the third covering material, etc.) will be described first.
As the coating material in the present invention, one containing a resin and a pigment can be used. In the present invention, the color, gloss, etc. can be set by adjusting the type of pigment, the mixing ratio, and the like. 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) of the pigment per 100 parts by weight of the solid content of the resin.

Examples of resins include water-soluble resins, water-dispersible resins, solvent-soluble resins, solvent-free resins, non-aqueous-dispersible resins, and composites thereof. These may have cross-linking reactivity, and the form thereof is not particularly limited, and may be either a one-pack type or a two-pack type. A water-dispersible resin and/or a water-soluble resin are particularly preferably used in the present invention. Examples of resins that can be used 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 silicon resin, fluorine A resin or the like, or a composite system thereof, or the like can be mentioned. In the present invention, a hydraulic binder such as cement can be used as long as it does not impair the effects of the present invention, but it is desirable not to use it because it may limit the color of the film.

As the pigment, known coloring pigments, extender pigments and the like can be used. Among these, as coloring pigments, for example, titanium oxide, zinc oxide, carbon black, lamp black, bone black, graphite, black iron oxide, copper chromium black, cobalt black, copper manganese iron black, red iron oxide, molybdate orange, permanent 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, luster pigments, and the like. By using one or two or more of these coloring pigments, it is possible to color in an arbitrary hue.

Examples of extender pigments include heavy calcium carbonate, cold water stone, slight 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 the extender pigment, the mixing ratio, etc., the coating material can be adjusted to have a desired glossiness.

In addition to the above components, the coating material of the present invention contains known additives such as aggregates, dyes, thickeners, wetting agents, antifreeze agents, and film-forming aids within a range that does not significantly impair the effects of the present invention. agents, preservatives, antifungal agents, anti-algae agents, antibacterial agents, dispersants, antifoaming agents, ultraviolet absorbers, light stabilizers, antioxidants, catalysts, dilution solvents and the like. The coating material can be produced by uniformly mixing the components described above by a conventional method.

As the first coating material of the present invention, any material can be used as long as it contains the above-described components, but it is preferable to use a material that can form a coating with non-uniform color tone and/or gloss by applying the first coating material. . As such a first coating material, for example, a multicolored paint, a coating material containing a special pigment, or the like is suitable, and a coating material containing a scaly pigment as the special pigment is particularly preferable. Examples of scale-like pigments include colored mica, metal flake pigments, pearl pigments, luster pigments, mica, etc. One or more of these can be used. In the present invention, it is particularly preferable to contain a metal flake pigment (more preferably an aluminum flake pigment). When such scaly pigments are included, the orientation of the scaly pigments is randomized, or the scaly pigments are aggregated and unevenly distributed, so that a coating with uneven color tone and/or gloss is likely to be formed, resulting in a complex and natural appearance. Patterns can be formed. In addition, since the film formed in this manner can exhibit a subdued metallic appearance, it is suitable for use in buildings, civil engineering structures, and the like.

The mixing ratio of the resin and the scaly pigment is preferably 5 to 200 parts by weight (more preferably 10 to 100 parts by weight) of the scaly pigment per 100 parts by weight of the resin solid content. In such a case, a coating having 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 coating material of the present invention, one containing the above-described constituents can be used, and it may be the same type as the first coating material, or may be different. In the present invention, the second coating material preferably contains the scale-like pigment described above. As a result, the second coating formed also becomes a coating with non-uniform color tone and/or gloss, and a more complex and natural pattern can be formed, thereby enhancing aesthetics.

The heating residue of the coating material is preferably 10% by weight or more, more preferably 15 to 80% by weight. 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 further clarify the features of the present invention.

The following materials were prepared as coating materials.

・Covering material 1-1
Acrylic resin emulsion, red metallic coating material (heating residue: 20% by weight, viscosity: 2.0 Pa s, pigment ratio: resin solid content 100 weight 35 parts by weight per part)

・Covering material 1-2
Silver-based metallic coating material mainly composed of acrylic resin emulsion pigment (aluminum flake pigment) (heating residue: 24% by weight, viscosity: 3.6 Pa s, pigment ratio: 38 weight parts per 100 parts by weight of resin solid content part)

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

・Covering material 2-2
Golden metal (metallic) tone coating material mainly composed of acrylic resin emulsion pigment (aluminum flake pigment, yellow iron oxide) (heating residue: 24% by weight, viscosity: 3.8 Pa s, pigment ratio: resin solid content 36 parts by weight for 100 parts by weight)

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

(Example 2)
As the first step, coating material 2-1 is applied to the substrate (slate plate) in a random direction (using a fibrous roller) in a coating amount of 120 g/m ² as the first step, and the surface is dry to the touch. and dried for 2 hours to form a beige-based metallic coating film having an uneven pattern with non-uniform color tone. Next, in the second step, the coating material 2-2 was discontinuously applied with a roller at a coating amount of 50 g/m ² (using a roller having five types of sponge materials as shown in FIG. 3. Sponge material 3a: Hardness 45-60 N, density 50-100 kg/m ³ , sponge material 3b: hardness 75-110 N, density 15-30 kg/m ³ , sponge material 3c: hardness 110-140 N, density 15-50 kg/m ³ , sponge Material 3d: hardness 110-300 N, density 30-85 kg/m ³ , sponge material 3e: hardness 1000-1500 N, density 10-20 kg/m ³ ), dried for 24 hours. All coating and drying were performed under standard conditions. By the above-described method, a highly aesthetically pleasing decorative coated surface was obtained in which a beige metallic tone region having an uneven pattern and a golden metallic tone region were intricately mixed.

Claims (4)

A step of applying the first coating material to the entire surface of the surface to be coated to form a first coating;
A step of discontinuously applying a second coating material on the first coating to form a second coating;
including
Using a roller or a pressing tool as an applicator for applying the second coating material,
A method for forming a decorative coating surface, wherein the first coating is a coating having non-uniform color tone and/or gloss. 1. A roller or pressing tool in which at least two types of sponge materials having different hardnesses and/or densities are randomly mixed is used as an applicator for applying the second coating material. The method for forming the decorative coating surface according to 1. 3. The method of forming a decorative coated surface according to claim 1, wherein the first coating material contains a scaly pigment. 3. The method of forming a decorative coated surface according to claim 1, wherein the second coating material contains a scaly pigment.

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