JP2005111392A - Coating film structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a composition of a coating material for obtaining a coating film structure characterized by forming a bead layer in which a fine glass bead and a color mica are arranged in parallel on a colored or a white coating material, and an application method therefor. <P>SOLUTION: This coating film structure is constituted of a coating film laminated with a primer coating layer formed from the surface side of a coated substance which is formed from the surface side of the colored or the white coating material, an intermediate coating layer, and a top-coating layer. The application method of each layer is to finish so as to become smooth by using a metal trowel. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a pointillistic translucent coating structure in which the color of a coating material is transmitted to the surface by being applied on a white or colored coating material.

Painted surface that looks very similar to ceramics by mixing glass beads as a catadioptric material into the topcoat layer of the coating on an object to be coated, such as an inorganic plate, and utilizing the bending and reflecting action of light by the glass beads. Thus, the design value is improved to increase the commercial value (Japanese Patent Laid-Open No. 5-50030).
In addition, as a method of forming a stone-like paint film such as granite or marble like on the object to be coated such as the surface of a building, for example, finely ground natural stone or colored aggregate is included on the object to be coated. A method of applying an aggregate-containing paint is known (Japanese Patent Laid-Open No. 2001-293435).
However, there has been a demand to construct a coating film structure that exhibits a varied appearance, and how to realize this demand has been a problem.

This invention is proposed in view of the said problem, and it aims at providing the coating-film structure which exhibits the external appearance rich in the designability.
JP 5-50030 A JP 2001-293435 A

First, the invention according to claim 1 of the present application is characterized by a bead layer in which fine glass beads formed on the surface of a coating film and color mica are arranged in parallel.
The invention according to claim 2 of the present application is characterized in that, in the first invention, the bead layer is translucent.
Furthermore, the invention according to claim 3 of the present application is characterized in that the undercoat paint layer or the intermediate coat paint layer of the coating film is a colored or white coating material dried.

In order to achieve the above object, the coating film structure in the present invention is constituted by a coating film in which an undercoat coating layer, an intermediate coating layer, and a top coating layer are formed from the surface side of an object to be coated. The construction method of each layer is finished using a gold trowel so as to be smooth.

The coating material used for each of the undercoat paint layer and the intermediate coat layer is not particularly limited as long as it has a synthetic resin emulsion as a main component for forming a coating film, but further contains an inorganic powder. Is preferred.

Examples of such synthetic resin emulsions include acrylate copolymer resins, vinyl acetate resins, ethylene-vinyl acetate copolymer resins, styrene-acrylate copolymer resins, vinyl acetate-acrylate copolymer resins. , Ethylene-vinyl chloride copolymer resin, vinyl acetate-veova copolymer resin, ethylene-vinyl chloride copolymer resin, epoxy resin, urethane resin, silicon-modified acrylic, and fluorine emulsions can be used. It is also possible to use a mixture as appropriate. Such a synthetic resin emulsion may be of a type that crosslinks within emulsion particles or between emulsion particles, or a two-component curing type that adds a crosslinking agent to cause a crosslinking reaction. Furthermore, a powder type emulsion can also be used.

The inorganic powder is not particularly limited as long as it is usually used as a filler or pigment for coating materials. For example, as inorganic, heavy calcium carbonate, kaolin, clay, porcelain clay, diatomaceous earth, white carbon, Examples include talc, barite powder, precipitated barium sulfate, barium carbonate, titanium oxide, ferric oxide, carbon black, yellow lead, ocher and the like.

In addition, additives such as thickeners, dispersants, antifoaming agents, wetting regulators, antiseptics, fungicides, algaeproofing agents, and other fibrous materials such as pulp fibers, glass fibers, carbon fibers, etc. Products can also be blended as appropriate.

The undercoating material is preferably finished so as to be smooth using a gold trowel for application so that the application amount is 0.5 to 1.8 kg / m <2>.

As the coating material used in the intermediate coating layer, the coating composition used in the undercoat coating layer can be used. In order to make the finished surface uneven and to facilitate the overcoating, those containing aggregates are preferred.

The type of aggregate is not particularly limited as long as it is usually used for coating materials. For example, silica sand, cold water stone, mountain sand, river sand, natural stone pulverized material, ceramic / ceramic pulverized material, glass pulverized material, etc. can give.

The intermediate coating material is preferably finished using a gold trowel so as to be smooth so that the coating amount is 1.0 to 2.0 kg / m <2>.

As the base paint, emulsion resin such as acrylic resin, acrylic / styrene copolymer resin, vinyl acetate resin, ethylene / vinyl acetate resin can be used as the base paint for surface coating. Additives for paints such as an agent, a dispersant, an antifoaming agent, a thickener, a film-forming aid, an antiseptic, an antifreezing agent, and an organic solvent can be added.

As the top coating material, a base paint, fine glass beads and color mica are added. The top coat layer is applied with a gold trowel.

A glass bead having an average particle size of 0.3 to 2.0 mm is used, but it is not limited as long as there is no hindrance in design after coating. By using fine beads, the surface of the beads is improved and a simple coating workability is obtained. In addition, the beads may be used by mixing several kinds having different average particle diameters within a range where there is no problem in coating workability.

Color mica is obtained by coating mica powder with a paint such as an acrylic resin or an epoxy resin.

A type having an average particle diameter of 1.0 to 5.0 mm is used for the color mica, but it is not limited as long as there is no hindrance in design properties after coating. In addition, color mica may be used by mixing several types having different average particle diameters within the range where there is no problem in coating workability.

The blending ratio of base paint, glass beads and color mica to be applied with the top coating material is 50 parts of a resin component equivalent to 50% as an emulsion resin, and used as an antifoaming agent, film-forming aid, thickener, etc. 300 to 500 parts of glass beads and 0.1 to 5.0 parts of color mica are suitable for 100 parts of base paint with an appropriate amount and 50 parts of water. When the blending ratio is within this range, the workability of coating is good, whereas when the blending amount is small, there are problems such as drying properties and design properties. There is a problem such as a decrease in performance, it does not fit.

Adjustment of the resin content in the base paint can be performed by selecting the type of resin emulsion and adjusting the formulation of the blended water, and may be determined in consideration of coating workability, finished appearance, and the like.

A silicon compound, an ether compound, a fatty acid ester compound, or the like is used as an antifoaming agent to be blended in the base paint, and bubbles in the coating film can be effectively eliminated. Texanol, benzyl alcohol, butyl cellosolve, or the like is used as the film forming auxiliary agent, which facilitates the formation of the coating film. In order to obtain a viscosity suitable for coating, it can be adjusted by using an appropriate amount of methylcellulose, hydroxyethyl / methylcellulose, hydroxypropylmethylcellulose and the like. Further, if a dispersing agent such as a nonionic surfactant or polyphosphate is used for ensuring dispersion of the compounding material, a good dispersion effect can be obtained.

The top coat material is preferably finished so as to be smooth using a gold trowel when applied, so that the coating amount is 3.0 to 4.0 kg / m <2>. Furthermore, it is preferable to smooth the surface with a stainless steel finish trowel so that the finish is smooth.

In addition, when forming a coating film structure having a translucent function by the coating method of the present invention, if the surface of the object to be coated is uneven or cracked and is so severe that it cannot be covered by the undercoat layer, the object to be coated is previously formed. It is necessary to form a smooth surface such as roughening the surface unevenness or cracks with sandpaper or blasting, and embedding resin putty or the like. In order to further improve the adhesion of the coating film of the present invention, it is possible to apply a sealer or primer as an undercoat.

Furthermore, in order to improve the coating workability and the adhesion of the coating film between the intermediate coating and the top coating, it is possible to apply the same binder component as that of the top coating material.

The finished coating surface is partially exposed to glass beads, allowing the intermediate coating material to be seen through, showing a surface appearance that reflects light internally, and has an excellent design with color mica stippling tone. A coating film structure can be obtained.

Example 1
A plaster board is used as the base, and an acrylic resin emulsion {manufactured by Aika Kogyo Co., Ltd., JS-500} is applied and dried as a sealer. 100, white} was applied at 0.9 kg / m ² and dried. Furthermore, an intermediate coating layer is formed by using 100 parts of this base paint plus 50 parts of cold water stone and 5 parts of water to form a 1.5 Kg / m ² intermediate coating layer. After drying, an acrylic / styrene resin emulsion 50 parts, 0.1 part of antifoaming agent (ether compound), 3.1 parts of film forming aid (texanol), 0.2 part of dispersing agent (polyphosphate), 1.5 parts of thickener (methylcellulose) , 50 parts of water, base paint {JPA-7, JPX-7}, 100 parts of glass beads, 400 parts of glass beads with an average particle diameter of 0.3 to 0.5 mm, blue color with an average particle diameter of 1.0 to 5.0 mm The top coating prepared by blending 2 parts of mica was applied with a 3.5 kg / m ² iron coating finish to obtain the coating finish of the example.

Comparative Example 1
The coating finish of Comparative Example 1 was obtained by applying a trowel coating in the same manner as in Example 1 except that the blending amount of the glass beads of Example 1 was 250 parts.
Comparative Example 2
A coating finish of Comparative Example 2 was made by applying a trowel coating in the same manner as in Example 1 except that the amount of color mica of Example 1 was changed to 10 parts.

In the coating finish of Example 1, the iron was able to move smoothly between the surfaces of the glass beads and at the same level, so that the coating operation was extremely easy, and coating with a uniform thickness was possible. In addition, a part of the surface of the glass beads was exposed to allow the white intermediate coating material to be seen through, and a design finish having a color mica stippling tone color was obtained.

In the coating finish of Comparative Example 1, since the amount of the glass beads was small, the coating material was liable to drip, and it was difficult to move the iron at the same level, and it was difficult to ensure a uniform coating film. In addition, the number of steps was conspicuous and the finished appearance was not good. In the coating finish of Comparative Example 2, the amount of color mica was large and the ironing work was difficult, and the permeability was deteriorated, so that a pointed-tone appearance was not obtained.

Claims (3)

A coating film structure comprising a bead layer in which fine glass beads and color mica formed on the surface of a coating film are arranged in parallel. 2. The coating film structure according to claim 1, wherein the bead layer has a translucent function. 3. The coating film structure according to claim 1, wherein the undercoating layer or intermediate coating layer of the coating film is a colored or white coating material.