JP4365122B2 - Method for forming a decorative surface - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for forming a decorative surface that can be applied to surface cosmetics such as inner and outer walls of buildings and civil engineering structures.
[0002]
[Prior art]
For building inner and outer walls, civil engineering structures, etc., a makeup method for forming a relatively thick film is generally used to enhance the aesthetics of the surface. Examples of the coating material used here include a multi-layer finish coating material and a thick finish coating material defined in JIS A6909 “Finish for architectural finishing”. The thickness of the coating film formed by these coating materials is usually about 1 to 5 mm for a multilayer finish coating material and about 4 to 10 mm for a thick finish coating material.
On the other hand, in recent years, in the paint field, conversion from a solvent-type paint using an organic solvent as a solvent to an aqueous paint using water as a solvent is being attempted. This is done for the purpose of reducing the health hazards of the painters and residents and for the purpose of reducing air pollution. In the thick coating type building and civil engineering coating materials as described above, the movement toward water-based treatment is progressing, and a synthetic resin emulsion is used as a binder, and an inorganic powder particle having a particle diameter of about 0.1 to 200 μm. Water-based coating materials containing a large amount of as a filler have become the mainstream.
[0003]
When surface makeup is performed using such an aqueous coating material, a part or all of the surface of the coating film may be flattened in order to enhance the design.
For example, in a multi-layer finish coating material, apply a coating material so that a concavo-convex pattern is formed, and apply a paint thinner or kerosene or the like to the ridge or roller within 1 hour as a guide. A flattening process is performed to hold the part. According to this method, it is possible to form a pattern generally called a convex portion processing pattern (head cut pattern).
Japanese Patent Application Laid-Open No. 2000-297251 discloses a method in which a waterproof finish coating composition for buildings is sprayed on a base substrate and then lightly pressed on the spray surface while the roller is wetted with paint thinner. Is flattened to a substantially uniform height.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2000-297251
However, in the conventional flattening treatment, the coating material applied to the surface to be coated is smoothly worked to avoid being caught on the wrinkles and rollers. Therefore, organic solvents such as paint thinner and kerosene must be used. Don't be. If water is used instead of paint thinner, kerosene, etc., the coating material may be re-eluted and stuck to the wrinkles or rollers, and in extreme cases, the coating material applied to the coated surface may be peeled off. There is a risk. Thus, in the prior art, even if the coating material used is an aqueous coating material, the actual situation is that an organic solvent must be used in the planarization treatment.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and provides a method capable of flattening a decorative surface formed by an aqueous coating material without using an organic solvent such as paint thinner. It is intended to do.
[0007]
[Means for Solving the Problems]
In order to solve these problems, the present inventor has intensively studied, and an organic solvent can be used as a water-based coating material if a coating material in which the coating surface exhibits water repellency in the drying stage after the coating is used. The present inventors have found that a planarization process can be performed without completing the present invention.
1. A first step of applying a water-based coating material to the surface to be coated;
In the drying stage of the water-based coating material, it comprises a second step of flattening the coating film surface using a pressing tool,
The aqueous coating material contains 100 to 2000 parts by weight of a synthetic resin emulsion in a solid content, 3 to 30 parts by weight of a water repellent in a solid content, and 100 to 2000 parts by weight of an inorganic powder having an average particle size of 0.1 to 200 μm. Use a water-based coating material
In the second step, a method for forming a decorative surface, wherein water is interposed between the pressing tool and the coating film surface.
2. A first step of applying a water-based coating material to the surface to be coated;
In the drying stage of the water-based coating material, it comprises a second step of flattening the coating film surface using a pressing tool,
The aqueous coating material contains 100 to 2000 parts by weight of a synthetic resin emulsion in a solid content, 3 to 30 parts by weight of a water repellent in a solid content, and 100 to 2000 parts by weight of an inorganic powder having an average particle size of 0.1 to 200 μm. Use a water-based coating material
In the second step, a method for forming a decorative surface is characterized in that a water-based paint is interposed between the pressing tool and the coating film surface.
3. The method for forming a decorative surface according to claim 1 or 2, wherein, in the second step, the coating film surface is flattened in a drying stage in which the drying rate of the aqueous coating material is 5 to 70%. .
4). The method for forming a decorative surface according to any one of claims 1 to 3, wherein a wrinkle or a plastic roller is used as the pressing tool in the second step.
5). In the second step, water is interposed between the pressing tool and the coating film surface by applying water to the pressing tool or by watering the coating film surface. 5. The method for forming a decorative surface according to any one of 4 above.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail together with embodiments thereof.
[0009]
The present invention can be applied to surfaces of buildings such as inner and outer walls and civil engineering structures. Specifically, as the base material, for example, concrete, mortar, porcelain tile, fiber mixed cement board, cement calcium silicate board, slag cement pearlite board, asbestos cement board, ALC board, siding board, gypsum board, plywood, extrusion molding A plate, a steel plate, a plastic plate, etc. are mentioned. The surface of these base materials may have been subjected to some surface treatment (for example, a sealer, a surfacer, a filler, etc.), or may already have a coating film formed thereon.
[0010]
The coating material used in the first step of the present invention contains a synthetic resin emulsion, a water repellent, and an inorganic granular material having an average particle size of 0.1 to 200 μm. Among these, in the present invention, the water repellent is an especially important component. In the present invention, since such a water repellent is included, the surface of the coating film exhibits a water repellency in the drying process of the coating film, so that water can be used as a lubricant in the planarization treatment. Become.
[0011]
Examples of the water repellent include wax-based water repellents such as paraffin wax, polyethylene wax, and acrylic / ethylene copolymer wax; silicon-based water repellents such as silicone resin, polydimethylsiloxane, and alkylalkoxysilane; Examples thereof include fluorine-based water repellents such as carboxylate, perfluoroalkyl phosphate ester, and perfluoroalkyltrimethylammonium salt. These can be used alone or in combination of two or more. Among these, in the present invention, a silicon-based water repellent is preferably used. Although the form of a water repellent is not specifically limited, A water dispersion type etc. are suitable.
[0012]
The water repellent is usually mixed at a ratio of 1 to 100 parts by weight, preferably 2 to 50 parts by weight, and more preferably 3 to 30 parts by weight in terms of solid content with respect to 100 parts by weight of the solid content of the synthetic resin emulsion. Within such a range, water repellency can be expressed on the surface of the coating film during the drying process of the coating film. When the amount of the water repellent is less than 1 part by weight, sufficient water repellency cannot be obtained, and the coating film may be re-eluted when the coating film surface comes into contact with water during the coating film drying process. When the amount of the water repellent is more than 100 parts by weight, the stain resistance may be extremely lowered or cracks may occur, which is not practical.
[0013]
Examples of the synthetic resin emulsion include a vinyl acetate resin emulsion, a vinyl chloride resin emulsion, an epoxy resin emulsion, an acrylic resin emulsion, a urethane resin emulsion, an acrylic silicon resin emulsion, a fluororesin emulsion, and a composite system thereof. it can. These can be used alone or in combination of two or more. These synthetic resin emulsions may have crosslinking reactivity.
[0014]
The inorganic powder is not particularly limited as long as the average particle diameter is 0.1 to 200 μm. Specifically, for example, heavy calcium carbonate, precipitated calcium carbonate, kaolin, talc, clay, clay, china clay, silica, barium sulfate, barium carbonate, quartz sand, quartzite, diatomaceous earth, titanium oxide, zinc oxide, aluminum oxide Iron oxide and the like, and one or more of these can be used.
The inorganic granular material is mixed so as to be usually 100 to 2000 parts by weight, preferably 200 to 1000 parts by weight, more preferably 300 to 600 parts by weight with respect to 100 parts by weight of the solid content of the synthetic resin emulsion.
[0015]
In addition to the above-described components, the coating material in the present invention can also contain components that can be used for ordinary coating materials. Examples of such components include coloring pigments, dyes, aggregates, fibers, thickeners, film-forming aids, leveling agents, wetting agents, plasticizers, antifreezing agents, pH adjusting agents, preservatives, and antifungal agents. Agents, anti-algae agents, antibacterial agents, dispersants, antifoaming agents, ultraviolet absorbers, antioxidants, catalysts, crosslinking agents and the like.
[0016]
In the first step of the present invention, the coating material layer is formed by applying the coating material to the surface to be coated. Examples of the painting tool include ricin gun, stucco gun, tile gun, universal gun, spray gun, wool roller, pattern roller, scissors, spatula, brush, and the like. As the shape of the coating material layer, various shapes such as a yuzu skin shape, a ripple shape, a stucco shape, a flat shape, an uneven shape, and a moon shape are possible. The shape of the coating material layer can be appropriately adjusted by selecting a coating tool, adjusting the coating amount of the coating material, and the dilution rate. The application amount is usually 0.5 to ² kg / m ² . Water may be used for dilution of the coating material, and the dilution rate is usually about 0 to 10% by weight.
[0017]
In the second step, in the drying step of the coating material layer, the coating film surface is flattened using a pressing tool, and at this time, water is interposed between the pressing tool and the coating film surface. In the present invention, the flattening process can be performed smoothly with the intervention of water.
[0018]
As a pressing tool in the second step, for example, a bag, a plastic roller, or the like can be used. In the flattening treatment, water can be interposed between the pressing tool and the coating material layer by a method such as applying water to the pressing tool or spraying the surface of the coating material layer.
[0019]
In the second step, a planarization treatment can be performed by interposing an aqueous paint containing water between the pressing tool and the coating film surface.
The water-based paint is not particularly limited as long as it contains water and a binder, and a known paint may be used. For example, as the binder, the above-described synthetic resin emulsion or the like may be used.
Moreover, the component which can be normally used for a coating material can also be included as another component. Such components include solvents, inorganic powders, color pigments, aggregates, dyes, fibers, thickeners, film-forming aids, leveling agents, wetting agents, plasticizers, antifreeze agents, pH adjusters, antiseptics Agents, mildewproofing agents, algaeproofing agents, antibacterial agents, dispersants, antifoaming agents, water repellents, ultraviolet absorbers, antioxidants, catalysts, crosslinking agents and the like.
[0020]
When such a water-based paint is used, the planarization treatment can be performed more smoothly, and the surface designability, the coating thickness, and the like can be adjusted. For example, by using the water-based coating material used in the first step and a water-based paint having a slightly different color tone, it is possible to impart a design property rich in aesthetics.
[0021]
In the present invention, it is particularly preferable to use the same composition as the aqueous coating material used in the first step. At this time, the content of water is preferably set higher than that of the aqueous coating material. For example, 10 to 100 parts by weight, preferably about 15 to 40 parts by weight of water is added to 100 parts by weight of the aqueous coating material. What is necessary is just to set content of salt water high. By setting the water content high, the planarization process can be performed more smoothly.
[0022]
The flattening process can be performed according to a desired surface finish shape. For example, in the case of forming a convex portion processing pattern (head cut pattern) in a multilayer finish coating material, etc., after spraying the coating material in an uneven shape, only the convex portion of the coating material layer is flattened in a plateau shape Good. Moreover, when forming a decorative surface such as a plaster wall, the coating material may be flattened so that the entire coating material layer may be crushed after the coating material is spread almost uniformly on the surface to be coated.
[0023]
The flattening treatment can be performed when water repellency is expressed on the surface of the coating material layer. Usually, the stage where the surface of the coating material layer is dry to the touch becomes a standard. At this stage, only the surface of the coating material layer is dried to exhibit water repellency, and the inside of the coating material layer is undried and has a pseudoplastic flow.
[0024]
Specifically, the planarization treatment can be performed while the drying rate of the coating material layer is usually 5 to 70% by weight, preferably 10 to 60% by weight. In addition, the dry rate said here shows how much the volatile component contained in a coating material layer volatilized, and is a value calculated by a following formula.
<Formula> Drying rate (% by weight) = {(W ₁ −W ₂ ) / (W ₁ −W ₃ )} × 100
However, W ₁ is the initial weight of the coating material layer, W ₂ is the weight of the coating material layer in the middle of drying, W ₃ represents a (heating residue at 105 ° C.) absolute dry weight of the coating material layer.
[0025]
After the second step, the decorative layer can be obtained by drying the coating material layer. The drying temperature is usually normal temperature, but heating is also possible.
A colored paint, a transparent paint, a translucent paint or the like can be applied to the decorative surface after drying, if necessary.
[0026]
【Example】
Examples and Comparative Examples are shown below to clarify the features of the present invention.
[0027]
(Manufacture of coating materials)
・ Composition example 1
Water repellent 8 parts by weight, inorganic powder A 36 parts by weight, inorganic powder B 74 parts by weight, inorganic powder C 184 parts by weight, inorganic powder D 110 parts by weight, film-forming aid with respect to 200 parts by weight of resin A coating material was produced by mixing and stirring 24 parts by weight, 10 parts by weight of a dispersant, 22 parts by weight of fibers, and 4 parts by weight of an antifoaming agent by a conventional method.
・ Composition example 2
Water repellent 8 parts by weight, inorganic powder A 36 parts by weight, inorganic powder B 74 parts by weight, inorganic powder C 184 parts by weight, inorganic powder D 110 parts by weight, film-forming aid with respect to 200 parts by weight of resin A coating material was produced by mixing and stirring 24 parts by weight, 10 parts by weight of a dispersant, 22 parts by weight of a fiber, 4 parts by weight of an antifoaming agent, and 20 parts by weight of a thickener by a conventional method.
In addition, the following were used as a raw material.
[0028]
Resin: Acrylic resin emulsion (methyl methacrylate-styrene-2-ethylhexyl acrylate-glycidyl methacrylate-methacrylic acid copolymer, solid content 50% by weight, Tg 5 ° C.)
Water repellent: Water-dispersed water repellent (emulsified dispersion of amino group-containing dimethylsiloxane compound, solid content 50% by weight)
・ Inorganic powder A: Titanium oxide (average particle size 0.2 μm)
・ Inorganic powder B: Talc (average particle size 8μm)
Inorganic powder C: Silica powder (average particle size 60 μm)
Inorganic powder D: Calcium carbonate (average particle size 60 μm)
・ Film-forming auxiliary: 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate ・ Dispersant: polycarboxylic acid-based dispersant (solid content 30% by weight)
・ Fiber: Pulp fiber (average fiber length 0.1 mm)
・ Thickener: Hydroxyethylcellulose 3% by weight aqueous solution ・ Antifoaming agent: Mineral oil-based antifoaming agent
Example 1
After applying the coating material of Formulation Example 1 to a slate plate that has been subjected to a sealer treatment in advance using a stainless steel basket at a coating amount of 1.5 kg / m ² , the temperature is 23 ° C. and the relative humidity is 50% below (hereinafter, (Referred to as “standard state”) for 30 minutes. The drying rate of the coating material at this time was 30% by weight.
Next, after water-coating the coating material surface, the entire coating film was flattened using a plastic basket and then dried in a standard state for 24 hours. At this time, the planarization process could be performed smoothly.
In Example 1, the elution of the coating film by water hammering, etc. was not recognized, and a highly smooth plaster-like coating film could be formed.
[0030]
(Example 2)
The coating material of Formulation Example 2 was sprayed and applied at a coating amount of 1.5 kg / m ² using a tile gun on a slate plate that had been subjected to a sealer treatment in advance, and then allowed to stand for 30 minutes in a standard state. The drying rate of the coating material at this time was 28% by weight.
Subsequently, after flattening the convex part of the coating film using a plastic roller with water, it was dried in a standard state for 24 hours. At this time, the planarization process could be performed smoothly.
In Example 2, no elution or the like of the coating film by water hammering was observed, and a head cut pattern in which only the convex portions of the coating film were flattened could be formed.
[0031]
(Example 3)
The coating material of Formulation Example 2 was applied to a slate plate that had been previously treated with a sealer using a stainless steel iron at a coating amount of 1.5 kg / m ² , and then allowed to stand for 30 minutes in a standard state. The drying rate of the coating material at this time was 28% by weight.
Subsequently, the convex part of the coating film was flattened so as to be slid using a plastic trowel with a water-based paint, and then dried in a standard state for 24 hours. At this time, the planarization process could be performed more smoothly.
In addition, as a water-based paint, the thing which added 30 weight part of water to the coating material of the mixing example 2 was used.
[0032]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the flattening process of the decorative surface formed with an aqueous coating material can be performed, without using organic solvents, such as a paint thinner.

Claims (5)

A first step of applying a water-based coating material to the surface to be coated;
In the drying stage of the water-based coating material, it comprises a second step of flattening the coating film surface using a pressing tool,
The aqueous coating material contains 100 to 2000 parts by weight of a synthetic resin emulsion in a solid content, 3 to 30 parts by weight of a water repellent in a solid content, and 100 to 2000 parts by weight of an inorganic powder having an average particle size of 0.1 to 200 μm. Use a water-based coating material
In the second step, a method for forming a decorative surface, wherein water is interposed between the pressing tool and the coating film surface. A first step of applying a water-based coating material to the surface to be coated;
In the drying stage of the water-based coating material, it comprises a second step of flattening the coating film surface using a pressing tool,
The aqueous coating material contains 100 to 2000 parts by weight of a synthetic resin emulsion in a solid content, 3 to 30 parts by weight of a water repellent in a solid content, and 100 to 2000 parts by weight of an inorganic powder having an average particle size of 0.1 to 200 μm. Use a water-based coating material
In the second step, a method for forming a decorative surface is characterized in that a water-based paint is interposed between the pressing tool and the coating film surface.   The method for forming a decorative surface according to claim 1 or 2, wherein, in the second step, the coating film surface is flattened in a drying stage in which the drying rate of the aqueous coating material is 5 to 70%. .   The method for forming a decorative surface according to any one of claims 1 to 3, wherein a wrinkle or a plastic roller is used as the pressing tool in the second step.   In the second step, water is interposed between the pressing tool and the coating film surface by applying water to the pressing tool or by watering the coating film surface. 5. The method for forming a decorative surface according to any one of 4 above.