JPH02284679A - Formation of patterned coating film - Google Patents

Abstract

PURPOSE:To obtain a rugged pattern having a stereoscopic effect and with the top of the protrusion flattened by rolling a roller on the surface of a high- viscosity wetted coating film to form a rugged pattern, flattening the top of the protrusion before curing and then coating the film. CONSTITUTION:The base resin such as the alkyd resin and acrylic resin having >=300 poise (at 20 deg.C) or especially 300-800 poise viscosity when applied and having a fluidity characteristic is uniformly applied on the whole surface of a material such as concrete and a PC slab. A cylindrical roller having a smooth surface is rolled on the surface of the wetted and uncured high-viscosity coating film to form a rugged pattern. The top of the protrusion is pressed and flattened before the coating film is cured. A colored paint having a good covering property is then applied on the whole surface of the coating film, and then a colored clear paint is applied. The coloration can be changed and freely selected in this way, and a pattern excellent in design is obtained.

Description

[Detailed description of the invention] The present invention relates to a method for creating a novel three-dimensional pattern.

That is, in the present invention, a roller with a smooth surface is rolled in contact with a high-viscosity wet coating surface to form an uneven pattern on the coating surface, and the tops of the protrusions are held down and flattened to facilitate further curing. The present invention relates to a method for forming a patterned coating film, which is characterized in that the entire surface of the coating film is coated with a colored coating material having good hiding properties, and then a colored clear coating material is coated thereon.

Specifically, the method of the present invention is preferably carried out based on the following steps.

(1) Apply high viscosity paint uniformly to the entire surface to be coated.

(2) A roller with a smooth surface is applied to the painted surface in a wet state and is rotated while being in contact with the painted surface to form an uneven pattern on the painted surface.

(3) Before the coating film is cured, the tops of the convex portions are pressed to create an uneven pattern with flattened tops.

(4) A colored paint with good hiding properties is applied to the painted surface having the uneven pattern obtained in (3) above.

(5) Next, a colored clear paint is applied to the painted surface obtained in (4).

The patterned coating film formed by the method of the present invention has an uneven shape and the tops of the protrusions are flat, and the uneven surface has a colored coating film with good hiding properties and a colored transparent coating film. This is the end of formation. As a result, the uneven pattern gives it an excellent three-dimensional effect. In addition, when looking at colored transparent paint films, a thick film tends to form on the flat surfaces of the tops of convex parts and the bottoms of concave parts, so that it is almost impossible to see through the color tone of the already applied colored paint film. , the color tone of the colored transparent coating film is emphasized, and on the other hand, the colored transparent coating film inevitably becomes a thin film at the corners and acute angles around the flat part of the top of the convex part, and the color tone of the colored coating film that has already been painted is enhanced. Can be easily seen through. Therefore, from a color perspective, the patterned coating film formed by the method of the present invention can have different color tones between flat areas and recessed areas and corner areas and acute angle areas. When a colored transparent coating film is formed, the flat areas are finished in a dark color, and the corners are finished in a light color, making it possible to finish in a rich variety of colors.

Next, the method of the present invention will be explained in more detail.

(Process): Apply high viscosity paint evenly over the entire surface to be coated.

The objects to be coated are not particularly limited, and include, for example, concrete, mortar, PC board, ALC treatment, concrete block, slate, iron parts, wood parts, etc., and these surfaces should be prepared with appropriate base preparation and brimer coating, etc. Te(
It is preferable.

High viscosity paint has a viscosity of 300 voices (at 20°C) when applied.
As mentioned above, it is particularly preferable to use a paint having a fluidity of 300 to 800 voids (at 20 DEG C.) and a fluidity characteristic (Chicken 1-Lobby characteristic) that can stably maintain an uneven pattern. Specifically, there are paints that have a base resin as the main component and, if necessary, a curing agent, a pigment, a fluidity regulator, a solvent, etc. Liquid paints as dispersion media are suitable.

Examples of the base resin include alkyd resin, acrylic resin,
Examples include polyester resin, vinyl resin, epoxy resin, and phenol resin. The curing agent is one that three-dimensionally crosslinks and cures the base resin, and any known curing agent can be used. Suitable pigments include colored pigments and extender pigments. The viscosity can be adjusted by adjusting the composition and molecular weight of the base resin,
This can be easily done depending on the composition and amount of fl1'1, the form of the paint, etc.

The high viscosity paint is applied uniformly over the entire surface of the object to be coated, and the application methods include, for example, a spray ricing gun, a spray tile gun, a ricing gun, a pressure gun, etc., and the application amount is 0.6 Kg/m2 or more, especially 0.6
~1.2 Kg/m2 is preferred.

Step (2): A roller with a smooth surface is placed on the coated surface of the high viscosity paint in a wet state and rotated while in contact with the coated surface to form an uneven pattern on the coated surface.

When a cylindrical roller with a smooth surface is applied to a wet uncured high viscosity paint surface and the roller is rotated while in contact with the painted surface, the uncured and sticky high viscosity The paint lands on the roller 14 times and is lifted.
When separated from the roller, it becomes convex, and after the roller rotates, the coated surface has an uneven pattern (texture pattern) with sharp tips of the convex parts.

The roller preferably has a flat surface that comes into contact with the coating surface, and the material may be any material as long as it is not altered or deformed by the paint, such as vinyl resin, polyethylene resin, polypropylene resin, etc. .

Step (3): After the uneven pattern coating film is cured, press the tops of the projections to form an uneven pattern with flattened tops.

The top of the convex part of the uneven pattern formed in step (2) was sharply pointed, and in step (3), the sharp top was pressed and flattened, and the top of the convex part was flattened. Forms an uneven pattern.

When pressing the convex portion, it is preferable that the coating film is in an uncured state and is dried or cured to such an extent that the coating film does not adhere to the pressing jig. The above-mentioned roller can be used as a jig for pressing the convex portion.

Step (4): A colored paint with good hiding properties is applied to the painted surface having the uneven pattern obtained in the above (3).

Colored paint is a paint that is applied to the surface to be coated, which has the above-mentioned uneven pattern, to the extent that the base surface in flat areas, concave areas, corners, sharp areas, etc. of the uneven pattern coating film is hardly or completely visible. It is a paint that forms a colored coating that can be covered in color. Specifically, the main components are a base resin and a colored pigment, and if necessary, a curing agent, a solvent (water and/or an organic solvent), etc. are added.

Suitable base resins include acrylic resins, polyester resins, alkyd resins, and vinyl resins, and examples of coloring pigments include organic pigments and inorganic pigments. The paint is preferably in a liquid form such as a solution type, high solid type, nonaqueous dispersion type, or emulsion type (aqueous). In addition, the hiding power of the colored paint is JIS-5
90-10 according to the description in 400-1979-6,3
0%, especially 95-100% is preferred. In addition, the viscosity during coating is in the range of 20 to 50 seconds/IHS at 20°C, of which 40 to 50 seconds/IH5, for roller coating,
For spraying, 20 to 30 seconds/IH3 is suitable. IH5 indicates that it was measured using an Iwata cup.

It is preferable to apply the colored paint after the uneven pattern coating film on the surface to be coated is completely cured, but it may be applied uncured. There are no particular restrictions on the painting method, such as brush painting,
It can be done by spray painting, electrostatic painting, dipping painting, roller painting, etc., and the coating amount is 0.910 Kg/m or more, especially 0.
10-0.20 Kg/m2 is preferred. The method of drying and curing the colored coating film may be optionally carried out at room temperature or by heating.

Step (5): A step of applying a colored clear paint to the colored coating surface.

When this colored clear paint is thick, it is almost or completely opaque and cannot be seen through the substrate, but when it is thin, the substrate can be seen through. Therefore, when the colored clear paint is applied to the colored uneven pattern painted surface obtained in the above step (4),
A thick film is formed on the flat parts and concave parts of the painted surface, and a paint film with the color tone of the colored clear paint is formed, and a thin film is formed on the corners and sharp parts around the flat parts of the convex parts, so that the process (4) The colored coating film can be visually recognized through the colored clear coating film.

The clear paint mainly consists of a base resin and a colorant,
Furthermore, a curing agent, a solvent (water and/or an organic solvent), etc. can be added as necessary. The same components as those used in the above-mentioned colored paint are used for each of these components.

The hiding power of the clear paint is lower than that of the colored paint, and specifically, the hiding rate by the method described above is preferably 30% or less, particularly preferably 20% or less, and the viscosity at the time of coating is 18% at 20°C.
~20 seconds/IH3 is suitable.

It is preferable to apply the clear paint after the colored paint film is cured, but it may be applied uncured. The coating method can be the same as described above, and the coating amount is 0.08 kg/m or less, preferably 0.08 kg/m2 or less.
~0.15Kg/m2. The colored clear coating film can be cured at room temperature or by heating.

Example A paint for forming an uneven pattern (epoxy resin/polyamide two-component paint, viscosity 400 voise) was uniformly applied to an ALC board using a spray tile gun. The coating amount is 0.75Kg/m2,
The painted surface had a smooth yuzu skin appearance. After leaving it at room temperature for a few minutes, a polypropylene roller with a smooth surface is applied to the wet painted surface and rolled while in contact with the painted surface, thereby forming an uneven pattern with pointed tips of the convex parts. .

The height difference between the concave portion and the convex portion was 1 to 10 am.

Next, before the uneven pattern coating film is cured, a water-moistened polypropylene roller with a smooth surface is used to press the tops of the projections to flatten the tops. As a result, the coating film has an uneven pattern with a flattened top. The coating film was cured by being left at room temperature for 16 hours.

Then, a yellow paint with good hiding properties (acrylic polyol resin paint, hiding rate of 95% or more, viscosity of 25 seconds/IH5) was spray-coated on the uneven parts whose tops were flattened. The coating amount was 0.15 kg/m2. 16 at room temperature
Let dry for an hour. The colored paint completely covered up the uneven surface in terms of color.

Subsequently, a brown transparent paint with low hiding power (acrylic polyol resin type, hiding rate 20%, viscosity 20 seconds/I HS) was spray-painted on the colored (yellow) painted surface. The coating amount was 0.10 Kg/m2. The coating was left to cure at room temperature for 16 hours. As a result, a relatively thick layer of brown transparent paint is applied to these recesses and flat surfaces, and these parts have a strong color tone (brown) due to the transparent paint film, but sharp points and corners around the flat parts Since it is difficult to apply the transparent paint thickly in some areas, the color tone of the blue (yellow) paint film can be seen through.

The patterned coating film thus obtained has a concavo-convex pattern with a flattened top, and the color change can be freely selected as described above, so the pattern is excellent in design.

Claims (1)

[Claims] A roller with a smooth surface is rolled in contact with the highly viscous wet coating surface to form an uneven pattern on the coating surface, and before curing, the tops of the protrusions are held down to make it flat, and then the entire surface of the coating is coated. A pattern coating film forming method characterized by applying a colored paint and then applying a colored clear paint.