JP2021020154A - 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. 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 coating surface.

Conventionally, decorative coatings having various patterns have been formed on the wall surfaces of buildings, civil engineering structures, and the like. Especially in recent years, while many buildings with high design are designed, various decorative coatings such as natural stone, wood grain, metal, leather, ceramic (glaze), and antique are required. To. As an example of such a decorative coating, there is a decorative coating in which a plurality of covering materials are partially applied to form a pattern.

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 having different colors are applied to the surface in a speckled manner to finish a colorful pattern. However, in Patent Document 1, the speckled pattern may be monotonous and have an artificial finish.

Japanese Unexamined Patent Publication No. 2000-140750

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

In order to solve such a problem, as a result of diligent studies, the present inventor applied the first coating material to the entire surface to be coated to form a specific first coating, and then did not use the second coating material. He came up with a method for forming a decorative coating surface to be continuously applied, and completed the present invention.

That is, the present invention has the following features.
1. 1. A process of applying the first coating material to the entire surface of the surface to be coated to form the first coating.
A step of discontinuously applying a second coating material on the first coating to form a second coating.
Including
The method for forming a decorative coating surface, wherein the first coating is a coating having a non-uniform color tone and / or gloss.
2. 2. The first coating material is characterized by containing a reptile pigment. The method for forming a decorative coating surface according to.
3. 3. The second coating material is characterized by containing a reptile pigment. Or 2. The method for forming a decorative coating surface according to.

The present invention is a step of applying a first coating material to the entire surface of a surface to be coated to form a first coating, and a second coating material is discontinuously applied onto the first coating. By including the step of forming the first coating film having a non-uniform color tone and / or gloss, it is possible to obtain a highly aesthetically pleasing decorative coating film surface having a complicated 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 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 a roller that can be used in the present invention. FIG. 4 is a front view showing an example of the decorative coating surface formed by the present invention.

1. 1. Decorative coating surface 1a. Colored area A
1b. Colored area B
1c. Colored area C
11. First coating 12. Second coating 2. Pressers 2a to 2e. Sponge material 2f. Height direction 3. Rollers 3a to 3e. Sponge material 3f. Cylindrical outer peripheral surface 3 g. Cylinder outer diameter direction
4. Surface to be coated

Hereinafter, modes for carrying out the present invention will be described.

The present invention is a step of applying a first coating material to the entire surface of a surface to be coated to form a first coating, and a second coating material is discontinuously applied onto the first coating. The first coating film is characterized in that the first coating film has a 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 a decorative coating surface formed by the present invention [FIG. 1 (I): front view, (II): cross-sectional view of portion XX']. According to the method for forming the decorative coating surface of the present invention, the colored region A [FIG. 1 (I): 1a] and the colored region B [FIG. 1 (I)] when visually recognized from the front as shown in FIG. 1 (I). A film in which 1b] is mixed is obtained. In this coating, as shown in FIG. 1 (II), the first coating [FIG. 1 (II): 11] is formed on the entire surface of the surface to be coated [FIG. 1 (II): 4]. The second coating [FIG. 1 (II): 12] is discontinuously laminated, and when viewed from the front, the first coating portion is the colored region A, and the laminated portion of the first coating and the second coating. Is visually recognized as the colored region B. Further, 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 coating surface having a complicated and natural pattern.

Hereinafter, the method of forming the decorative coating surface of FIG. 1 will be described as an example.

As a method for forming the decorative coating surface shown in FIG. 1,
(First step) A step of applying the first coating material to the entire surface of the surface to be coated to form a first coating (second step). A second coating material is discontinuously applied on the first coating. It includes a step of applying and forming 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 film formed by the first coating material is a coating film having a non-uniform color tone and / or gloss, and is characterized by being formed by one type of coating material. In the present invention, "non-uniform color tone" means that at least two or more regions having different color tones can be visually recognized in the first coating film formed on the surface to be coated. More specifically, there are regions in which the color difference (ΔE) is preferably 0.5 or more (more preferably 1 or more). The upper limit of the color difference is not particularly limited, but is preferably 90 or less, and can be set according to a desired design. For example, in the case of forming a unified and calm design 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 in which the contrast between the colored regions is clear, the color difference (ΔE) is preferably more than 20 and 90 or less.

Further, "non-uniform gloss" means that at least two or more regions having different glossiness can be visually recognized in the first coating film formed on the surface to be coated. 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 film having contrast and three-dimensional shadows.

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 portion of the formed film having different color tones can be measured and calculated by the following formula.
<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} , b ^{* 1} are L ^* , a ^* , b ^* .L ^{* 2} , a ^{* 2} , and b ^{* 2} at the first measurement point, respectively. ^* , A ^* , b ^* )

The "glossiness" is a value measured according to JIS K5600-4-7 "mirror glossiness". Specifically, it is a value obtained by measuring the mirror surface glossiness (measurement angle 60 degrees) of the portions having different glosses of the formed film.

The first coating having a non-uniform color tone and / or gloss as described above is, for example,
(I) Type of first coating material (for example, multicolored pattern paint, special pigment-containing coating material, etc.),
(II) Method of applying the first coating material (for example, coating tool, coating thickness, etc.),
(III) Type of surface to be coated (for example, uneven pattern, material, surface texture, suction property, repellent property, etc.),
And those that can be formed from a combination of these. In the present invention, a method in which the above (I) and (II) are combined is particularly preferable, and the pattern boundary may be unclear, for example, an uneven pattern, a blurred pattern, a wavy pattern, or a fluctuating pattern. Suitable.

The coating amount of the first coating material may be appropriately set in consideration of the type and condition of the surface to be coated, the finish, etc., 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 covering the entire surface to be coated is likely to be formed. Further, the amount of the first coating material applied to the entire surface of the 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" are 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) with respect to the covering material. In this case, a film having a non-uniform color tone and / or gloss can be formed more efficiently. The viscosity of the first coating material at the time of application 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 to be coated is likely to be formed, and a film having a non-uniform color tone and / or gloss is likely to be formed. The viscosity is a value (guideline value at the fourth rotation) measured using a BH type viscometer (rotation speed 20 rpm) in a standard state (temperature 23 ° C., relative humidity 50%).

When applying the first coating material, it is sufficient to apply the first coating material so that the first coating material is applied to the entire surface to be coated, and examples of the application device include a spray, a roller, and a brush (brush). Etc.), pressing tools (including tapping tools, etc.), etc. can be used. Among these, examples of the roller include a fibrous roller, a porous (sponge) roller, and the like, and as the pressing tool, for example, a roller having a sponge, felt, woven cloth, non-woven fabric, or the like can be used. In the present invention, it is particularly preferable to use a roller and / or a brush, and it is further desirable to spread the coating in a random direction and apply the coating to the entire surface to be coated. As a result, a film having a non-uniform color tone and / or gloss is likely to be formed.

In the second step, the second coating material applied on 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 having a color different from that of the first coating material as the second coating material. The 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 according to a desired design. For example, in the case of forming a unified and calm design 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 in which the contrast between the colored regions is clear, the color difference (ΔE) is preferably more than 20 and 90 or less.

Further, as the second covering material, a material having a glossiness different from that of the first covering material can also be used. 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 aesthetically pleasing film 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 color difference meter. Specifically, each coating material is applied to standard blank paper using a film applicator with a clearance of 250 μm, and the coated surface is placed horizontally in a standard state (temperature 23 ° C., relative humidity 50%; the same applies hereinafter) 48. 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 it is dried for a long time.
<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} , b ^{* 1} are L ^* , a ^* , b ^* .L ^{* 2} , a ^{* 2} , and b ^{* 2} of the first coating material, respectively. ^* , A ^* , b ^* )

The "glossiness" is a value measured according to JIS K5600-4-7 "mirror glossiness". Specifically, a coating material is applied to one side of a glass plate using a film applicator with a clearance of 150 μm, and the coated surface is placed horizontally and dried for 48 hours in a standard state. Mirror gloss (measurement angle 60 degrees, It is a value obtained by measuring (an average value of 10 or more measurement points).

The amount of the second coating material applied may be appropriately set according to the desired finish (pattern, etc.), but the amount of the second coating material applied is preferably smaller than that of the first coating material, and is preferable. It is 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 amount of the second coating material applied satisfies the above range, a discontinuous film is likely to be formed, and the decorative film surface having a complicated pattern in which the first film and the second film are mixed is stably formed. Can be done. The amount of the second coating material applied discontinuously is preferably 100 g / m ² or less, more preferably 1 to 80 g / m ² , and further preferably 5 to 40 g / m in terms of solid content. It is ² . In the present invention, it is preferable that the coating amount of the second coating material is smaller than the coating amount 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 to 50% by weight (more preferably 2 to 40% by weight). As a result, a discontinuous film is likely to be formed. 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 at the time of application is preferably 0.5 to 10 Pa · s (more preferably 1 to 9.5 Pa · s). In such a case, the coating tool contains an appropriate amount of the coating material, a discontinuous film is likely to be formed, and the design can be enhanced. Further, 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 preferable that the first coating material (the coating material applied first) is in a non-fluid state. As a result, the coating materials are not easily mixed, a stable finish can be imparted, and a decorative coating having a high aesthetic appearance 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" means a state in which the fluidity of the coating film is lost after the first coating material is applied. Specifically, the second coating material is applied. It refers to a state in which the coating materials are dried and cured to the extent that they do not bleed or the coating materials do not mix with each other. This "non-fluid state" also includes states such as touch drying, semi-curing drying, and curing drying defined in JIS K5400. In the present invention, it is preferable to apply the second coating material after the first coating material is touch-dried (more preferably after semi-curing drying, further preferably after curing and drying). In the present invention, drying and curing may be preferably carried out at room temperature (5 to 40 ° C.).

As a coating tool for applying the second covering material, for example, a spray, a roller, a brush (including a brush or the like), a pressing tool (including a tapping tool or the like) or the like can be used. Among these, examples of the roller include a fibrous roller, a porous (sponge) roller, and the like, and as the pressing tool, for example, a roller having a sponge, felt, woven cloth, non-woven fabric, or the like can be used.

In the step of discontinuously applying the second coating material in the second step, for example, a roller, a brush, a pressing tool, or the like is used to partially apply the covering material to the surface to be coated. Just attach it. In order to apply the second coating material discontinuously, the application device may be intermittently (partially) contacted with the surface to be coated, for example, a method of applying by pushing, a method of applying by hitting. It is possible to adopt a method of applying, a method of applying while rubbing, and the like. When the covering material is applied discontinuously, a coating device having a spongy material is particularly preferable, and a roller or a pressing tool having a spongy material is more preferable. When a roller having a sponge material is used, it is preferable that the roller is continuously rolled and applied, that is, the surface to be coated is intermittently (partially) contacted and rolled. At this time, it is preferable that the rollers come into contact with and roll in random directions. By using such a coating tool, the effect of making the boundary between the colored regions in a non-linear state (intricate state) is further enhanced, and the aesthetic appearance can be further enhanced.

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

The shape of the spongy material is a shape having a curved surface such as a polygon such as a triangle, a quadrangle, a diamond shape, a pentagon, a hexagon, a circle, an ellipse, or a drop (water drop), or an indefinite shape. Etc., and a combination of these can be used. The size may be appropriately set according to a desired pattern.

As the sponge material, one kind of sponge material satisfying the above conditions can be used. For example, at least two kinds of sponge materials having different hardness and / or density as shown in FIG. 2 (FIG. 2: 2: Pressing tools in which 2a to 2e) are randomly mixed, and at least two or more kinds of spongy materials (FIGS. 3: 3a to 3e) having different hardness and / or densities as shown in FIG. 3 are formed on the outer peripheral surface of the cylinder (FIG. 3: 3 :). It is preferable to apply with a roller mixed in 3f). In such a coating tool, at least one kind (preferably two or more kinds) of spongy material may satisfy the above conditions. By using such a specific coating tool, the finish and aesthetics can be further improved.

In FIGS. 2 and 3, the spongy material is more preferably fixed so as to be stacked. Further, it is more preferable that the spongy material is compression-molded so as to be randomly mixed.

The spongy material of FIGS. 2 and 3 has a three-dimensional shape having an irregular 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 spongy materials having different sizes are mixed. In such a case, an irregular irregular shape is likely to be formed between the spongy materials, so that the effect 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 being sieved by a sieve having squares having a predetermined dimension on one side, for example. The thickness of the spongy material (FIG. 2: thickness in the 2f direction, FIG. 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 each sponge material. 30 mm).

FIG. 4 shows another example (front view) of the decorative coating surface formed by the method for forming the decorative coating surface of the present invention. In FIG. 4, three types of covering materials, a first covering material, a second covering material, and a third covering material, are sequentially applied as covering materials, and the colored region A by the first covering material and the second covering material are used. A decorative coating surface having a colored region B and a colored region C (FIGS. 4: 1a to 1c) formed by the third coating material is formed. The decorative coating surface shown in FIG. 4 may be formed in the same manner as in FIG. 1, for example.
(First step) A step of applying the first coating material to the entire surface of the surface to be coated to form a first coating (second step). A second coating material is discontinuously applied on the first coating. A step of applying and forming a second coating film (third step) Further, the third coating material can be formed by a method including a step of discontinuously applying the coating material.

The amount of the third coating material applied 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 ). Further, it is preferable that the coating amount of the third coating material is smaller than the coating amount of the first coating material and the second coating material. The amount of the third coating material applied discontinuously is preferably 100 g / m ² or less, more preferably 1 to 60 g / m ² , and further preferably ^{2 to} 30 g / m in terms of solid content. ² is preferable, which is less than the coating amount of the first coating material and the second coating material. Further, when four or more different types of 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.), a decorative coating surface having a colored region A, a colored region B, a colored region C, a colored region D, ..., Etc. is formed. do it.

Further, in the method for forming a decorative coating surface of the present invention, after forming the decorative coating surface by the above steps, at least one of the covering materials used in each step is selected, for example, a roller, a brush, a pressing tool and the like. Can be used to apply discontinuously and adjust the pattern. As a result, it is possible to obtain a highly aesthetically pleasing decorative film surface with a 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 for the purpose of surface protection, weather resistance improvement, stain resistance, etc., as long as the effects of the present invention are not impaired, to form a clear layer. It can also be provided.

<Surface to be coated>
The surface to be coated in the present invention is preferably a base material that constitutes the surface of a base material such as a building or a civil engineering structure, particularly a surface such as an inner / outer wall, a ceiling, or a fitting. Examples of such a base material include gypsum board, concrete, mortar, porcelain tile, brick, cement board, fiber-mixed cement board, cement calcium silicate board, pearlite board, ALC board, siding board, extruded board, plywood, and the like. Examples include wood plate, steel plate, plastic plate, glass plate, and the like. The surface of these base materials may be one that has been subjected to some kind of surface treatment (for example, a sealer, a surfacer, a filler, etc.), one that has already been coated with a coating film, or one to which a wallpaper is attached. ..

<Coating material>
First, the common items of the covering materials (first covering material, second covering material, third covering material, etc.) of the present invention will be described.
As the coating material in the present invention, a material containing a resin and a pigment can be used. In the present invention, the color, gloss and the like 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) with respect to 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 dispersion resins, and the like, or composites thereof. These may have cross-linking reactivity, and the form thereof is not particularly limited, and may be either a one-component type or a two-component type. In the present invention, a water-dispersible resin and / or a water-soluble resin is particularly preferably used. The types of resins that can be used include, for example, 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, and fluorine. Examples thereof include resins and the like, or composite systems thereof and the like. In the present invention, a hydraulic binder such as cement can be used as long as the effect of the present invention is not impaired, but it is desirable not to use it because it may limit the color of the coating film.

As the pigment, known coloring pigments, extender pigments and the like can be used. Among these, the coloring pigments include, for example, titanium oxide, zinc oxide, carbon black, lamp black, bone black, graphite, black iron oxide, copper chrome black, cobalt black, copper manganese iron black, red iron oxide, molybdate orange, and permanent. Red, Permanent Carmine, Anthraquinone Red, Perylene Red, Kinacridon Red, Yellow Iron Oxide, Titanium Yellow, First Yellow, Benzimidazolone Yellow, Chrome Green, Cobalt Green, Phthalocyanine Green, Ultramarine, Navy Blue, Cobalt Blue, Phthalocyanine Blue, Kinacridon Violet , Dioxazine violet, colored mica, metal flake pigments, pearl pigments, brilliant pigments and the like. Any hue can be colored by using one or more of these coloring pigments.

Examples of extender pigments include heavy calcium carbonate, cold water stone, light calcium carbonate, white carbon, talc, mica, kaolin, clay, porcelain clay, China clay, diatomaceous earth, barite powder, barium sulfate, precipitated barium sulfate, and silica sand. , Silica stone powder, quartz powder, resin beads, glass beads, hollow balloons and the like, and one or more of these can be used. The coating material can be adjusted to a desired glossiness by appropriately setting the type of extender pigment, the mixing ratio, and the like.

In addition to the above components, the coating material of the present invention includes known additives such as aggregates, dyes, thickeners, wetting agents, antifreeze agents, and film-forming aids, as long as the effects of the present invention are not significantly impaired. It may contain agents, preservatives, fungicides, algae-proofing agents, antibacterial agents, dispersants, antifoaming agents, ultraviolet absorbers, light stabilizers, antioxidants, catalysts, diluent solvents and the like. The covering material can be produced by uniformly mixing each of the above-mentioned components by a conventional method.

As the first coating material of the present invention, any material containing the above-mentioned constituent components can be used, but it is preferable that the first coating material can form a film having a non-uniform color tone and / or gloss. .. As such a first coating material, for example, a multicolored pattern paint, a coating material containing a special pigment, and the like are suitable, and as a special pigment, a coating material containing a scaly pigment is particularly preferable. Examples of the scaly pigment include colored mica, metal flake pigment, pearl pigment, brilliant pigment, 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 a reptile pigment is contained, the orientation of the reptile pigment is randomized, or the reptile pigment is aggregated and unevenly distributed, so that a film having a non-uniform color tone and / or gloss is likely to be formed, which is complicated and natural. A pattern can be formed. In addition, the coating film formed in this way can exhibit a calm metallic appearance, and is therefore suitable for buildings, civil engineering structures, and the like.

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

As the second coating material of the present invention, a material containing the above-mentioned constituent components can be used, and it may be the same type as or different from the first coating material. In the present invention, it is preferable that the above-mentioned scaly pigment is contained as the second coating material. As a result, the second film to be formed also becomes a film having a non-uniform color tone and / or gloss, and a more complicated and natural pattern can be formed, and the aesthetic appearance can be enhanced.

The heating residue of the covering 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, and 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 metal-like 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 weight 35 parts by weight with respect to the part)

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

・ Coating material 2-1
Acrylic resin emulsion, beige metal (metallic) -like 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 with respect to 100 parts by weight of resin solid content)

・ Coating material 2-2
Acrylic resin emulsion Pigment (aluminum flake pigment, yellow iron oxide) as the main component Golden metal (metallic) -like coating material (heated 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) in a random direction with a roller at an application amount of 120 g / m ² (using a fibrous roller), and the state is more than dry to the touch. The mixture was dried for 2 hours so as to form a reddish metallic coating film having an uneven pattern with uneven color tone. Next, as the second step, the coating material 1-2 is tapped discontinuously at a coating amount of 40 g / m ² [using a pressing tool made of a spongy material (hardness 110-140 N, density 15-50 kg / m ³ ). ], Allowed to dry for 24 hours. All painting and drying were performed under standard conditions. From the above method, a highly aesthetically pleasing decorative coating surface in which a reddish metallic region having an uneven pattern and a silver metallic region are mixed in a complicated manner was obtained.

(Example 2)
As the first step, the coating material 2-1 is coated on the base material (slate plate) with a coating amount of 120 g / m ² in a random direction on the entire surface (using a fibrous roller), and the state becomes more than dry to the touch. As described above, the mixture was dried for 2 hours to form a beige metallic coating film having an uneven pattern with uneven color tone. Next, as a second step, the coating material 2-2 is discontinuously coated with a coating amount of 50 g / m ² (a roller having five kinds of spongy materials as shown in FIG. 3 is 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 Quality 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 ), dried for 24 hours. All painting and drying were performed under standard conditions. From the above method, a highly aesthetically pleasing decorative coating surface in which a beige metallic region having an uneven pattern and a golden metallic region are mixed in a complicated manner was obtained.

Claims (3)

A process of applying the first coating material to the entire surface of the surface to be coated to form the first coating.
A step of discontinuously applying a second coating material on the first coating to form a second coating.
Including
The method for forming a decorative coating surface, wherein the first coating is a coating having a non-uniform color tone and / or gloss. The method for forming a decorative coating surface according to claim 1, wherein the first coating material contains a reptile pigment. The method for forming a decorative coating surface according to claim 1 or 2, wherein the second coating material contains a reptile pigment.

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