JP5701620B2 - Coating laminate - Google Patents

Description

  The present invention relates to a novel coating film laminate. The present invention can be applied mainly to buildings, civil engineering structures, and the like.

  2. Description of the Related Art Conventionally, in order to increase the aesthetics of a building or a civil engineering structure, a design such as a natural stone is imparted. For example, WO2004 / 752 (patent document 1), WO2005 / 14256 (patent document 2), and the like describe a material mainly composed of natural aggregate and resin as a material that expresses natural stone-like design. Yes.

  However, the material described in the above-mentioned patent document has a large specific gravity and further has a thickness of several mm or more. Therefore, the load with respect to a base material will become large. In such a material, when the thickness is reduced, the natural stone-like design property is impaired, and the color tone of the base may adversely affect the design property.

  Japanese Patent Application Laid-Open No. 2003-181369 (Patent Document 3) describes that a stone-like coating material layer is laminated on a colored undercoat layer. According to the technique of Patent Document 3, the influence of the color tone of the background can be suppressed to some extent. However, the stone-tone coating material layer of Patent Document 3 uses a natural stone pulverized material or the like as in the above-mentioned Patent Document, and there is a limit to reducing the weight and thickness.

WO2004 / 752 WO2005 / 14256 Publication JP 2003-181369 A

  This invention is made | formed in view of the above problems, and it aims at obtaining the coating-film laminated body which can express the designability of a natural stone tone, reducing weight and thickness. Is.

  In order to solve the above-mentioned problems, the present inventors have intensively studied and have come up with a coating film laminate in which two specific coating films are laminated on a substrate, and have completed the present invention.

  That is, the present invention has the following characteristics.

1 . A coating film laminate having a colored coating film on a substrate and a pattern coating film thereon,
The patterned coating film
In the transparent continuous phase by the synthetic resin emulsion, at least one or more kinds of discontinuous granular colored dispersed phases different from the colored coating film are dispersed,
The colored dispersed phase is one in which the granular material of the oil-based colored paint is crushed and spread flat.
The coating film laminate, wherein the solid content weight ratio between the transparent continuous phase and the colored dispersed phase is 0.5: 1 to 50: 1.
2 . Examples of the colored dispersed phase include those that spread flatly to a particle size of 3 mm or more . The coating film laminated body of description.
3 . The colored dispersed phase includes a non-circular shape in which the boundary with the transparent continuous phase is complicated . The coating film laminated body of description.
4 . The transparent continuous phase and the colored dispersed phase have different surface gloss levels . The coating film laminated body of description.
5 . The colored coating film has an uneven shape . The coating film laminated body of description.

Above 1. ~ 6. The coating film laminate can exhibit natural stone-like design properties while reducing the weight and thickness.
In particular, the above 2. Then, since the ratio of the transparent continuous phase to the colored dispersed phase is relatively high, the colored dispersed phase tends to spread flatly and a large pattern can be easily obtained.
3. above. Then, since it has a granular pattern with a particle size of 3 mm or more, a large pattern that can be visually recognized from a distant place is obtained.
4. above. Then, since the granular pattern by the colored dispersed phase is not a simple circle but a random shape, the natural feeling can be enhanced.
5. above. Then, the design property can be enhanced by the difference in the surface glossiness between the transparent continuous phase and the colored dispersed phase.
Above 6. Then, the three-dimensional effect is imparted to the pattern coating film by the uneven shape of the colored coating film, and the design is enhanced.

It is sectional drawing which shows an example of this invention coating film laminated body. It is a front view which shows an example of this invention coating film laminated body.

Hereinafter, modes for carrying out the present invention will be described.
An example of this invention coating film laminated body is shown to FIGS. FIG. 1 is a sectional view of the coating film, and FIG. 2 is a view of the coating film as viewed from the front.

The present invention is mainly applicable to buildings, civil engineering structures, and the like.
Examples of the substrate 1 in the present invention include concrete, mortar, siding board, extruded board, gypsum board, perlite board, plywood, plastic board, metal board, wood board, glass, brick, ceramic tile, and the like.
The substrate 1 may be one that has been subjected to some surface treatment (filler treatment, surfacer treatment, sealer treatment, etc.), one that has been pre-colored with a colored paint, etc. It may be affixed.

In the present invention, the colored coating film 2 is provided on the substrate 1. This colored coating film 2 becomes the background color of the pattern coating film 3. That is, when the coating film laminate of the present invention is viewed from the front, the color tone of the colored coating film 2 can be seen through the transparent continuous phase 31.
The colored coating film 2 can be formed by coating the base material 1 with a colored paint containing a binder and a pigment.

  As the binder in the colored coating film 2, various resin components can be used. Examples of the resin component include solvent-soluble resins, non-water-dispersed resins, solvent-free resins, water-dispersed resins, and water-soluble resins. Examples of the resin include acrylic resins, urethane resins, epoxy resins, vinyl chloride resins, vinyl acetate resins, acrylic silicon resins, fluororesins, polyvinyl alcohol, cellulose derivatives, and composites thereof.

  Color pigments can be used as the pigment. Specifically, examples of the color pigment include titanium oxide, zinc oxide, alumina, carbon black, ferric oxide (valve), yellow iron oxide, iron oxide, ultramarine, cobalt green, and other inorganic color pigments, azo series Organic pigments such as naphthol, pyrazolone, anthraquinone, perylene, quinacridone, disazo, isoindolinone, benzimidazole, phthalocyanine, quinophthalone, pearl pigment, aluminum pigment, fluorescent pigment, etc. It is done. By combining one or more of these color pigments, the colored coating film 2 can be set to a desired color tone.

The colored coating film 2 may have an uneven shape. In this case, due to the uneven shape of the colored coating film 2, a three-dimensional effect is imparted to the pattern coating film 3, and the design is improved.
Such uneven | corrugated shape can be formed by providing an unevenness | corrugation to the colored coating film 2 itself, for example. Moreover, an uneven | corrugated shape can also be formed by providing an uneven | corrugated coating film in the lower layer of the colored coating film 2, and providing the colored coating film 2 along the unevenness | corrugation.

The laminate of the present invention is one in which a patterned coating film 3 is provided on a colored coating film 2. The patterned coating film 3 is a transparent continuous phase 31 in which discontinuous granular colored dispersed phases 32 are dispersed at least one (preferably two or more).
Among these, the transparent continuous phase 31 is formed of a synthetic resin emulsion. On the other hand, the colored dispersed phase 32 is formed by crushing and spreading flat the particulates of the oil-based colored paint.

The film thickness of such a pattern coating film 3 is thin, and is about several tens to several hundreds μm. Therefore, in this invention, compared with the case where natural stone etc. are used, the weight and thickness of a coating film can be reduced and the weight reduction of a coating film can be achieved.
Moreover, in the patterned coating film 3, the granular material of the oil-based coloring paint is crushed and flattened in the transparent continuous phase 31, and the colored dispersed phase 32 is formed. Can be expressed.

The solid content weight ratio between the transparent continuous phase 31 and the colored dispersed phase 32 (transparent continuous phase: colored dispersed phase) is preferably 0.5: 1 to 50: 1, more preferably 1: 1 to 30: 1. More preferably, it is 1.5: 1-20: 1, More preferably, it is 2: 1-15: 1. If both are in such a ratio, the colored dispersed phase 32 tends to spread flatly, and a large pattern can be easily obtained.
When the colored dispersed phase 32 includes a flat particle having a particle diameter of 3 mm or more (preferably 5 mm or more), a large pattern that can be seen from a distant place is formed. In addition, the particle size in the present invention is the major axis of the particle.

In the pattern coating film 3, the synthetic resin emulsion forming the transparent continuous phase 31 is an aqueous material. On the other hand, the colored dispersed phase 32 is an oily material. Therefore, the shape of the colored dispersed phase 32 tends to be a non-circular shape in which the boundary with the transparent continuous phase is intricate.
Furthermore, in the pattern coating film 3, the colored dispersed phase 32 is easily exposed on the surface, and in this case, the texture of each of the transparent continuous phase 31 and the colored dispersed phase 32 appears. For example, it is possible to obtain a texture in which the surface glossiness of the transparent continuous phase 31 and the colored dispersed phase 32 is different. Specifically, a coating film having a surface glossiness of the transparent continuous phase 31 higher than that of the colored dispersed phase 32 is formed.
The randomly colored colored dispersed phase 32 contributes to an improvement in the natural feeling of the finished appearance. The difference in texture between the transparent continuous phase 31 and the colored dispersed phase 32 is also advantageous for improving the design of the finished appearance.

  The colored dispersed phase 32 includes one or more types having a color tone different from that of the lower colored coating film 2. Thereby, various appearances in which two or more colors are mixed are obtained. In FIG. 2, as the colored dispersed phase 32, two types (two colors) of colored dispersed phases (32a and 32b) having different color tones are scattered. Therefore, when viewed from the front, the appearance is a mixture of three colors (colored dispersed phase 32a, colored dispersed phase 32b, and colored coating film 2).

Such a patterned coating film 3 can be formed by coating a coating material in which particulates of an oil-based colored paint are dispersed in an aqueous medium containing a synthetic resin emulsion. The oil-colored colored paint particles are crushed during coating and spread flat, whereby the colored dispersed phase 32 is formed.
In coating the coating material, means such as spraying, roller coating, and brush coating can be employed. Among these, spraying is suitable. Coating with the amount of coating material is preferably 0.5 kg / ^{m 2} or less, more preferably 0.03~0.3kg / ^{m 2,} more preferably from 0.05~0.25kg / ^{m 2.}

As the synthetic resin emulsion in the coating material, for example, various emulsions such as acrylic resin, urethane resin, acrylic silicon resin, and fluororesin can be used. As long as the effects of the present invention are not impaired, the aqueous medium may contain various additives. Examples of such additives include extender pigments, thickeners, antifoaming agents, leveling agents, wetting agents, plasticizers, antiseptics, antifungal agents, antibacterial agents, light stabilizers, and UV absorbers. .
The oil-based coloring paint contains a non-aqueous resin, a coloring pigment, a solvent and the like. Among these, as the non-aqueous resin, for example, various non-aqueous resins such as an acrylic resin, a urethane resin, an acrylic silicon resin, and a fluororesin can be used. As a coloring pigment, the same thing as the above-mentioned colored coating film 2 can be used. As the solvent, aliphatic hydrocarbon solvents, aromatic hydrocarbon solvents, ketone solvents, alcohol solvents, ester solvents, ether solvents and the like can be used. In addition, the oil-based coloring paint can also contain various additives similar to the aqueous medium.
In order to stably disperse the particulates of the oil-based colored paint in the aqueous medium, a dispersion stabilizer, a crosslinking agent, or the like may be used as appropriate.

  In the above coating material, the color tone and particle size of the oil-based colored paint particles, the mixing ratio of the synthetic resin emulsion and the oil-colored colored paint particles, and the like may be appropriately adjusted so as to satisfy the various conditions described above in the pattern coating film 3.

  In the present invention, a transparent coating film can be provided on the pattern coating film 3. Such a transparent coating film can be formed by painting a transparent paint. If a transparent coating material that can form a hydrophilic coating film is used, the stain resistance can be improved.

  Examples are given below to clarify the features of the present invention.

(Coloring paint)
A light yellow colored paint M containing an acrylic resin emulsion (solid content 50% by weight), yellow iron oxide, dial, black iron oxide, titanium oxide, film-forming aid, and antifoaming agent was prepared.

(Coating material)
A coating material a containing an acrylic resin emulsion (solid content 50% by weight), water, a film-forming aid, an ultraviolet absorber, and an antifoaming agent was prepared.
On the other hand, white particles (acrylic resin, titanium oxide, extender pigment, particulates of oil-based colored paint mainly composed of aliphatic hydrocarbon solvent, particle diameter of about 4 mm) and brown particles (acrylic resin, yellow iron oxide, valve Handle, black iron oxide, titanium oxide, extender pigment, oil-based colored paint granule mainly composed of aliphatic hydrocarbon solvent, particle size of about 4mm, and dark gray particles (acrylic resin, black iron oxide, titanium oxide) A coating material b (white particles: brown particles: dark gray particles = 40) in which an extender, granules of an oil-based coloring paint mainly composed of an aliphatic hydrocarbon solvent, and a particle diameter of about 4 mm are dispersed in an aqueous medium. 40:20 (solid content weight ratio)).
The covering material a and the covering material b were mixed to obtain a covering material N (covering material a: covering material b = 5: 1 (solid content weight ratio)).

(Example)
The slate plate was spray-coated with a coloring paint M at a coating amount of 0.2 kg / m ^{2 and} dried for 3 hours. Next, the coating material N was spray-coated at a coating amount of 0.2 kg / m ^{2 and} dried for 24 hours. In addition, all coating and drying were performed at normal temperature (23 degreeC).
In the coating film laminate obtained by the above method, a granular dispersed phase (white, brown, dark gray) of 5 to 12 mm in granular (non-circular shape) is formed in the transparent continuous phase formed by the coating material a. It was scattered and the colored coating (light yellow) of the lower layer was seen through the transparent continuous phase, and it had natural stone-like aesthetics. The surface gloss was higher in the transparent continuous phase than in the colored dispersed phase.

1: Base material 2: Colored coating film 3: Patterned coating film 31: Transparent continuous phase 32, 32a, 32b: Colored dispersed phase

Claims (5)

A coating film laminate having a colored coating film on a substrate and a pattern coating film thereon,
The patterned coating film
In the transparent continuous phase by the synthetic resin emulsion, at least one or more kinds of discontinuous granular colored dispersed phases different from the colored coating film are dispersed,
The colored dispersed phase is one in which the granular material of the oil-based colored paint is crushed and spread flat.
The coating film laminate, wherein the solid content weight ratio between the transparent continuous phase and the colored dispersed phase is 0.5: 1 to 50: 1. The coating-film laminated body of Claim 1 containing what spread | diffused flatly as a colored dispersed phase to a particle size of 3 mm or more. The coating film laminate according to claim 1 , wherein the colored dispersed phase includes a non-circular shape having a complicated boundary with a transparent continuous phase. The coating film laminate according to claim 1 , wherein the transparent continuous phase and the colored dispersed phase have different surface glossiness. The coating film laminate according to claim 1 , wherein the colored coating film has an uneven shape.

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