JP4350503B2 - Cosmetic method - Google Patents

Description

  The present invention relates to a method for forming a decorative surface on an inner / outer wall or floor of a building, a civil engineering structure, or the like.

In recent years, with increasing interest in wall surfaces and floor surfaces with aesthetics, decorative surfaces with aesthetics such as natural stone, ceramic tiles, and bricks are widely used.
As a method for forming such a decorative surface, for example, after applying a primer that becomes a joint color, a joint material made of a resin foam or the like is applied, and then a finish coating material such as natural stone is applied, There is a method for removing the joint material thereafter. According to this method, the construction period is greatly shortened and the cost can be greatly reduced as compared with the case where natural stones, tiles, bricks, and the like are attached one by one. In addition, it can exhibit aesthetics almost equivalent to natural stone, ceramic tiles, bricks and the like.

For example, in Japanese Patent Laid-Open No. 10-296180 (Patent Document 1), a lower spray layer is sprayed evenly on a base material to which a joint rod is attached, and then an upper spray layer is sprayed so that a part of the lower spray layer is exposed. After that, the method of removing the joint rod and further polishing is described. According to the method of Patent Document 1, it is possible to form an insect-eating pattern surface partitioned by joints.
Japanese Patent Application Laid-Open No. 11-62163 (Patent Document 2) discloses a method for obtaining a natural sandstone-like pattern surface by applying joint tape to a base layer at a predetermined interval to form a transparent or translucent coating in multiple layers. A method for removing joint tape after painting is described.

  However, all of the above-mentioned patent documents are techniques relating to a coating method of a finish coating material, and do not focus on the joints. As for the joint portion, there is room for improvement in joint material removability during joint formation, durability after joint formation, aesthetics, and the like.

JP-A-10-296180 JP-A-11-62163

  The present invention has been made based on the above background, and a first object of the present invention is to improve the durability of joints in a decorative surface having joints. The second problem is to improve the aesthetics of the joint part, and the third problem is to improve the joint material removability at the time of joint formation.

  As a result of intensive studies to solve the above problems, the present inventor has conceived that a primer having a specific colorant composition is used as an undercoat material for forming a joint, and the present invention is completed. It was.

  That is, the present invention has the following characteristics.

1. A first step of applying a primer to the substrate, a second step of applying a joint material, a third step of applying a finish coating material, and a fourth step of removing the joint material. A makeup method,
In the first step, a makeup method characterized by using an undercoat material containing 100 parts by weight of a synthetic resin as a solid and 5 to 500 parts by weight of an infrared reflective pigment.
2. 1. The infrared reflective pigment in the primer is a metallic pigment having a particle size of 1 to 100 μm. Cosmetic method described in 1.

Above 1. According to the invention which concerns on this, in the makeup | decoration surface which has a joint part, durability of a joint part can be improved and degradation, discoloration, etc. resulting from a joint part can be suppressed.
2. The invention according to the above employs a metallic pigment as the infrared reflective pigment. 2. According to the invention according to the above, since the joint color has glitter, novel design properties can be expressed by a combination with various finish coating materials. Further, the joint material can be easily removed.

(1) Undercoat material The undercoat material finally forms joints on the decorative surface obtained by the method of the present invention. In the present invention, an undercoat material containing 100 parts by weight of a synthetic resin and 5 to 500 parts by weight of an infrared reflective pigment is used as the undercoat material.

  As the synthetic resin, a water-soluble resin, a water-dispersible resin, a solvent-soluble resin, a solvent-free resin, a non-water-dispersed resin, a powder resin, or the like can be used. The form of such a synthetic resin is not particularly limited, and may be either one liquid type or two liquid type. Examples of the types of resins that can be used include vinyl acetate resins, polyester resins, alkyd resins, vinyl chloride resins, epoxy resins, acrylic resins, urethane resins, silicone resins, fluorine resins, etc., or composites thereof. Can do.

  The glass transition temperature (hereinafter referred to as “Tg”) of the synthetic resin is usually −20 to 80 ° C., preferably −5 to 50 ° C. When the Tg of the synthetic resin is lower than −20 ° C., the coating film tends to swell. In addition, contaminants are likely to adhere to the coating film. Such a pollutant becomes a heat storage source and may promote deterioration of the coating film. When Tg is higher than 80 ° C., the displacement of the base substrate cannot be followed, and there is a possibility that the coating film is cracked. In the present invention, Tg is a value obtained from the formula of Fox from the types of monomers constituting the synthetic resin and their constituent ratios.

In this invention, durability of a coating film can be improved by using a thermosetting resin as a synthetic resin. Furthermore, joint material removability (especially joint material removability under high temperature and high humidity) can be improved.
The thermosetting resin may be either one that causes a crosslinking reaction by the synthetic resin itself or one that causes a crosslinking reaction by a separately mixed crosslinking agent. Crosslinking reactivity in the thermosetting resin includes, for example, carboxyl group and carbodiimide group, carboxyl group and epoxy group, carboxyl group and aziridine group, carboxyl group and oxazoline group, hydroxyl group and isocyanate group, carbonyl group and hydrazide group, and epoxy group. It can be imparted by combining reactive functional groups such as hydrazide groups, epoxy groups and amino groups, and hydrolyzable silyl groups.

  In the undercoat material in the present invention, by using an infrared reflective pigment as a colorant, the thermal load on the joint can be reduced and the durability of the joint can be increased. Examples of the infrared reflective pigment include aluminum flake, vapor-deposited aluminum flake, aluminum oxide, oxybismuth chloride, mica, titanium oxide-coated mica, iron oxide-coated mica, mica-like iron oxide, titanium oxide, barium sulfate, zinc oxide, and oxide. Examples thereof include iron, magnesium oxide, antimony oxide, zirconium oxide, yttrium oxide, indium oxide, silica, magnesium silicate, aluminum silicate, and calcium carbonate.

  Among these, metallic pigments such as aluminum flakes, vapor-deposited aluminum flakes, aluminum oxide, oxybismuth chloride, mica, titanium oxide-coated mica, iron oxide-coated mica, and mica-like iron oxide are preferable. In particular, when a metallic pigment having a particle diameter of 1 to 100 μm is used as an infrared reflective pigment, the joint color comes to have a glittering property, and therefore, a new design property is exhibited by combining with various finishing coating materials. Can be issued. Furthermore, since a coating film having fine irregularities is formed, the joint material can be easily removed.

  Such an infrared reflective pigment is usually mixed at a ratio of 5 to 500 parts by weight, preferably 10 to 400 parts by weight, with respect to 100 parts by weight of the solid content of the synthetic resin. When the amount of the infrared reflective pigment is less than 5 parts by weight, it is difficult to suppress heat storage in the joint part, and the joint part is likely to deteriorate. When there are more infrared reflective pigments than 500 weight part, it will become easy to generate | occur | produce a crack in a coating film, and a waterproofing effect and an efflorescence suppression effect will be impaired.

  As a colorant in the primer, an infrared transmitting pigment can be used in combination. By using such pigments in combination, it is possible to express various colors without impairing the infrared reflection performance of the coating film. Infrared transparent pigments include perylene pigment, azo pigment, yellow lead, dial, vermilion, titanium red, cadmium red, quinacridone red, isoindolinone, benzimidazolone, phthalocyanine green, phthalocyanine blue, cobalt blue, indanthrene blue One or more selected from ultramarine, ultramarine and bitumen are preferred.

  In the undercoat material used in the present invention, in addition to the above-described components, components that can be used in normal coating materials can also be included. Examples of such components include fillers, fibers, thickeners, film-forming aids, leveling agents, plasticizers, antifreezing agents, pH adjusting agents, preservatives, antifungal agents, algaeproofing agents, and antibacterial agents. , Dispersants, antifoaming agents, ultraviolet absorbers, antioxidants, catalysts, crosslinking agents and the like.

(2) Finishing coating material The finishing coating material used in the present invention is not particularly limited. For example, a finishing coating material for construction defined in JIS A 6909 and similar materials thereof, a stone-like coating material, and a humidity-controllable finishing material. Examples thereof include coating materials, finishing coating materials for plasterers, various coating floor materials, ceiling materials, and paving materials. Among these, a coating material capable of forming patterns such as sandstone, natural stone, ceramic tile, and brick is preferable.

  As a finish coating material in the present invention, a synthetic resin having a Tg of 10 to 50 ° C. and a granular material are included as constituents, the proportion of the granular material is 30 to 98% by weight, and 50% by weight of the granular material. It is desirable to use a combination of the intermediate coating material, which is a granular material having a particle diameter of 20 to 1000 μm, and a top coating material made of a multicolor paint. By using a combination of such an intermediate coating material and top coating material, it is possible to form sandstone-like, natural stone-like, ceramic tile-like, brick-like, etc. with a relatively thin film, and easy removal of joint materials. Become.

(2-1) Intermediate coating material As the synthetic resin in the intermediate coating material, one having a Tg of -10 to 50 ° C, preferably -5 to 40 ° C, more preferably 0 to 30 ° C is used. If Tg is within such a range, the joint material can be removed smoothly, and the finish of the joint part becomes good.

  Examples of the resin include acrylic resin, urethane resin, vinyl acetate resin, silicon resin, fluorine resin, acrylic / vinyl acetate resin, acrylic / urethane resin, acrylic / silicone resin, polyvinyl alcohol, and cellulose derivatives. These 1 type (s) or 2 or more types can be used. As the synthetic resin, water-based resins such as water-dispersible resins and water-soluble resins are suitable.

Such a synthetic resin may have a property of causing a crosslinking reaction after the coating film is formed. Since the synthetic resin in the intermediate coating material has crosslinking reactivity, the joint material can be removed more easily. In particular, it is effective for removing joint material under high temperature and high humidity. By using the cross-linking reactive synthetic resin, the physical properties of the coating such as water resistance can be enhanced.
Specifically, as the crosslinking reaction, for example, carboxyl group and metal ion, carboxyl group and carbodiimide group, carboxyl group and epoxy group, carboxyl group and aziridine group, carboxyl group and oxazoline group, hydroxyl group and isocyanate group, carbonyl group and hydrazide group, Examples include combinations of epoxy groups and hydrazide groups, epoxy groups and amino groups, hydrolyzable silyl groups, and the like.

  Examples of the granular material in the intermediate coating material include heavy calcium carbonate, cold water stone, kaolin, clay, porcelain clay, china clay, diatomaceous earth, talc, barite powder, quartz sand, gravel, glass beads, resin beads, metal particles, or rocks. , Crushed products such as glass, ceramics, sintered bodies, concrete, mortar, plastic, rubber and the like. Colored ones can also be used. In addition, coloring pigments and extender pigments that can be used for ordinary coating materials can also be used as the powder.

  The ratio of the granular material in the intermediate coating material is usually 30 to 98% by weight, preferably 50 to 96% by weight, more preferably 70 to 95% by weight in the solid content of the intermediate coating material. When the mixing amount of the granular material in the intermediate coating material is less than 30% by weight, the joint material removal cannot be performed smoothly, and the boundary between the coating material and the joint tends to be chipped or swelled. Moreover, there is a possibility that the top coating material may be peeled off when the joint material is removed. When the amount of the powder is more than 98% by weight, the adhesiveness becomes insufficient, and there is a possibility that the vicinity of the joint may be peeled off or chipped when the joint material is removed.

  About the granular material of the intermediate coating material, the particle size is adjusted so that 50% by weight or more thereof has a particle diameter of 20 to 1000 μm (preferably 30 to 500 μm, more preferably 50 to 300 μm). By adjusting the particle size of such a granular material, the removal of the joint material becomes smooth, and a joint with high aesthetics can be formed. When there are more than 50% by weight of powder particles having a particle diameter of less than 20 μm, the edge portion of the intermediate coating material forming the joints is chipped or raised when the joint material is removed, and the aesthetics of the joint parts are impaired. Easy to break. When the number of particles having a particle diameter of more than 1000 μm is more than 50% by weight, the unevenness on the surface of the intermediate coating film or the joint side wall becomes conspicuous, and the design may be deteriorated.

The intermediate coating material can be obtained by uniformly mixing the above-described components by a conventional method.
The mixing ratio of the synthetic resin and the granular material in the intermediate coating material may be appropriately set within a range in which the amount of the granular material satisfies the above conditions, but usually the granular material is added to 100 parts by weight of the solid content of the synthetic resin. It may be 200 to 2000 parts by weight (preferably 400 to 1000 parts by weight).

  For intermediate coating materials, thickeners, leveling agents, wetting agents, plasticizers, film-forming aids, antifreezing agents, pH adjusters, antiseptics, antifungal agents, algaeproofing agents, antibacterial agents, and dispersions Various additives such as an agent, an antifoaming agent, a fiber, an adsorbent, an ultraviolet absorber, an antioxidant, a catalyst, and a crosslinking agent can also be mixed. Moreover, water can also be mixed suitably.

  The solid content of the intermediate coating material is usually 50% by weight or more, preferably 60% by weight or more, more preferably 70% by weight or more. By preparing the intermediate coating material to such a high solid content, the thinning of the coating film of the intermediate coating material can be suppressed, and the three-dimensional design can be sufficiently expressed. Furthermore, it is possible to prevent the intermediate coating material from entering under the joint material.

The viscosity of the intermediate coating material is usually 5 to 50 Pa · s, preferably 8 to 40 Pa · s, and more preferably 10 to 30 Pa · s. The intermediate coating material desirably has thixotropy. The TI value of the intermediate coating material is usually 2.0 to 8.0, preferably 3.0 to 7.0, and more preferably 3.5 to 6.0. By adjusting the viscosity and TI value of the intermediate coating material within such ranges, the finish of the joint can be improved.
In addition, the viscosity said here is a viscosity (guide value of the 4th rotation) in 20 rpm measured with the BH type | mold viscosity meter at the temperature of 25 degreeC, and TI value is a value calculated | required by the following formula.
<Formula> TI value = η1 / η2
(In the formula, η1 represents the apparent viscosity at 2 rpm (Pa · s: guide value for the second rotation), η2 represents the apparent viscosity at 20 rpm (Pa · s: guide value for the fourth rotation), and the measurement temperature was 25. ℃.)

(2-2) Topcoat The multicolored paint used as the topcoat is defined in JIS K5667 (2002) “Multicolored paint”. The oil-in-water type (by the combination of the dispersion medium and the colored particles constituting the paint) O / W type), water-in-oil type (W / O type), oil-in-oil type (O / O type) and water-in-water type (W / W type). In the present invention, among them, an oil-in-water type (O / W type) or a water-in-water type (W / W type) multicolored paint is suitable. Any dispersion medium may be used as long as it has transparency that does not impair the color developability of the colored particles.

  The multicolored paint in the present invention is a paint in which a colored paint having a pigment volume concentration of 10% or more is dispersed in a dispersion medium (that is, the colored particles in the multicolored paint are colored with a pigment volume concentration of 10% or more. Those formed from paints are preferred. By forming the colored particles from a colored paint having such a pigment volume concentration, it is possible to sufficiently ensure the aesthetics of the joint. The pigment volume concentration of the colored paint may be appropriately set within a range of 10% or more, but is preferably 10 to 60%, more preferably 20 to 55%, and further preferably 30 to 50%. When the pigment volume concentration is too low, the colored particles existing across the boundary portion between the joint material and the coating film are not cut smoothly together with the joint material removal, and the finish of the joint portion tends to be insufficient.

The colored paint constituting the colored particles contains a resin, a colorant, and various additives as necessary. Examples of the resin in the colored paint include solvent-soluble resins such as acrylic, urethane, vinyl acetate, vinyl acrylate, acrylic urethane, acrylic silicon, fluorine, polyvinyl alcohol, biogum, galactomannan derivatives, alginic acid derivatives, and cellulose derivatives. Non-water-dispersed resins, water-soluble resins, water-dispersible resins and the like can be used. These resins may have a functional group that can be cross-linked by a curing agent or a curing catalyst. The Tg of the resin is usually −10 to 80 ° C., preferably 0 to 60 ° C.
A colorant or the like is mixed with such a resin so as to be within the above-mentioned range of the pigment volume concentration. As the colorant, those that can be generally blended into a paint can be used, and for example, the same as the primer can be used.
A method of dispersing the colored paint in a dispersion medium in a granular form may be performed by a known method, and a dispersion stabilizer, a crosslinking agent, or the like can be used as necessary.

  The particle size of the colored particles in the multicolored paint may be appropriately set according to the finally formed pattern, but is usually about 0.01 to 5 mm, preferably about 0.1 to 2 mm. By combining various colored particles having different particle diameters, the range of design properties can be expanded. The particle size of the colored particles can be appropriately adjusted depending on the viscosity of the colored paint, the stirring conditions during dispersion, and the like.

(3) Pattern Surface Forming Method An outline of the cosmetic method of the present invention is shown in FIG.
The present invention can be applied mainly to the inner and outer wall surfaces, ceilings, floors, etc. of buildings, or the surface of civil engineering structures. Examples of the base material constituting such a part include various bases such as concrete, mortar, siding board, extrusion board, gypsum board, pearlite board, plywood board, plastic board, metal board, wood board, glass and ceramic tile. Materials.
These base materials may have been subjected to some surface treatment (filler treatment, surfacer treatment, sealer treatment, etc.), or may be pre-colored with a colored paint or the like. It may be affixed.

  First, a primer is applied to the above-mentioned base material as a first step ((a) of FIG. 1). This primer material appears as a joint on the final pattern surface. Therefore, the hue of the undercoat material may be set according to a desired joint color. In order to make the undercoat material have a desired hue, the type, mixing amount, and the like of the colorant in the undercoat material may be appropriately adjusted.

The method for applying the undercoat material is not particularly limited, and methods such as spray coating, roller coating, brush coating, and iron coating can be employed. In the case of using an undercoat material containing a metallic pigment, it is also possible to form an aluminum member-like line by brushing.
The dry film thickness of the undercoat material may be within a range in which the substrate can be concealed, and is usually about 0.02 to 0.3 mm, preferably about 0.03 to 0.2 mm.
The undercoat material does not necessarily have to be applied to the entire surface. When the joint allocation is determined, the primer can be partially coated with a width of about 1.1 to 10 times the joint width.

In the second step, a joint material is pasted on the undercoat material layer ((b) of FIG. 1). As the joint material used here, one having an adhesive layer is usually used. Those having an adhesive layer on the back side and a release paper layer on the front side can also be used.
The jointing of the joint material may be performed so that the adhesive layer is in contact with the undercoat material layer after the undercoat material is dried.

  Examples of the material constituting the joint material include silicone rubber, fluorine rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, rubber such as SBR, resin such as polyester, polyurethane, vinyl chloride, polyethylene, polypropylene, polystyrene, and polycarbonate. And foamed polyurethane, foamed polyethylene, foamed polypropylene, foamed polystyrene and other resin foams.

What is necessary is just to determine the position, space | interval, etc. which paste a joint material according to a desired joint pattern. For example, it can be affixed at equal intervals or can be affixed randomly. Examples of patterns include tile-like patterns, brick-like patterns, geometric patterns, polka dots, striped patterns, lattice patterns, swirls, heraldic patterns, as well as graphic patterns designed for animals, plants, objects, characters, etc. Is possible. In order to express these patterns, a plurality of linear joint materials may be used in combination, or a flat pattern paper punched according to the pattern shape may be used as the joint material.
The width of the joint material is usually about 0.5 to 10 mm, and can be appropriately set within this range. The height of the joint material is usually about 0.5 to 10 mm.

  After bonding the joint material, the gap between the joint material and the primer layer can be sealed with a clear paint or the like. By such treatment, it is possible to reliably prevent the finish coating material from entering under the joint material.

In the third step, a finish coating material is applied ((c) to (e) in FIG. 1).
The method for coating the finish coating material is not particularly limited, and methods such as spray coating, roller coating, brush coating, and trowel coating can be employed. When a plurality of coating materials are used as the finish coating material, a coating method may be selected as appropriate according to the type of coating material, the type of formation pattern, and the like.
The dry film thickness of the finish coating material is usually about 0.5 to 10 mm. When the intermediate coating material and the top coating material as described above are used in combination, even if the dry film thickness is about 0.8 to 3 mm, sufficient three-dimensional design can be imparted.
1 (c) shows a state where an intermediate coating material is applied, and FIG. 1 (e) shows a state where an upper coating material is applied.

In the fourth step, the joint material is removed ((f) in FIG. 1). By removing the joint material, joint grooves are formed, and a pattern surface having a clear concavo-convex pattern is obtained. The removal of the joint material may be performed after the finish coating material is applied, and may be performed before or after the finish coating material is dried.
When a material having a release paper layer on the surface side is used as the joint material, for example, after coating the intermediate coating material ((c) in FIG. 1), the release paper layer is first peeled off at the drying stage of the intermediate coating material (see FIG. 1 (d)), and after applying the top coat (FIG. 1 (e)), the joint material body is peeled off (FIG. 1 (f)), so that a highly aesthetic joint shape can be easily obtained. Can be formed.

It is also possible to apply a clear paint or the like after the fourth step. The clear paint is not particularly limited, and examples thereof include acrylic resin-based paints, urethane resin-based paints, acrylic silicon resin-based paints, and fluororesin-based paints. It is also possible to use a colored type clear paint as long as the effect of the present invention is not impaired.
In the application of the clear paint, a known method can be employed, and various methods such as spray coating, roller coating, and brush coating can be employed.

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

(Manufacture of primer materials)
Primer 1
For 200 parts by weight of resin A, titanium oxide 10 parts by weight, yellow iron oxide 6 parts by weight, dial 10 parts by weight, phthalocyanine blue 8 parts by weight, aluminum silicate 20 parts by weight, film-forming aid 8 parts by weight, thickener 8 Undercoat material 1 was produced by mixing 2 parts by weight and 2 parts of antifoaming agent and stirring uniformly.

Primer 2
25 parts by weight of aluminum flakes (average particle size 20 μm), 20 parts by weight of aluminum silicate, 8 parts by weight of a film-forming aid, 8 parts by weight of a thickener, and 2 parts by weight of an antifoaming agent are mixed uniformly with 200 parts by weight of resin A. The undercoat material 2 was produced by stirring.
In addition, the raw material used in manufacture of undercoat material is as follows.

Resin A: Acrylic resin synthetic resin emulsion (methyl methacrylate-styrene-n-butyl acrylate copolymer, Tg 10 ° C., solid content 50% by weight)
-Film-forming aid: 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate-Thickener: Urethane thickener (solid content 50 wt%)
-Antifoaming agent: Silicone-based antifoaming agent (solid content 50% by weight)

(Manufacture of intermediate coating materials)
8 parts by weight of Colorant A, 550 parts by weight of Granules A, 100 parts by weight of Powder B, 100 parts by weight of water, 8 parts by weight of a film-forming aid, 12 parts by weight of thickener, and antifoaming agent The intermediate coating material 1 was manufactured by mixing 4 parts by weight and stirring uniformly. The intermediate coating material 1 had a viscosity of 18 Pa · s and a TI value of 4.2.
The raw materials used in the production of the intermediate coating material are as follows.

Resin B: Acrylic resin synthetic resin emulsion (methyl methacrylate-styrene-2-ethylhexyl acrylate-methacrylic acid copolymer, Tg 15 ° C., solid content 50% by weight)
-Colorant A: Titanium oxide-Granule A: Silica sand (particle size 80-250 μm)
-Powder B: Silica sand (particle diameter 150-300 μm)
-Film-forming aid: 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate-Thickener: Urethane thickener (solid content 50 wt%)
-Antifoaming agent: Silicone-based antifoaming agent (solid content 50% by weight)

(Manufacture of top coating materials)
Colored particle dispersion A
First, 500 parts by weight of water was charged in a container, and while stirring, 10 parts by weight of polyvinyl alcohol and 1 part by weight of a silicone-based antifoaming agent were uniformly mixed to produce dispersion medium A.
Next, 200 parts by weight of acrylic resin liquid (Tg 25 ° C., solid content 50% by weight) is charged in another container, and while stirring, 58 parts by weight of white pigment liquid, 6 parts by weight of black pigment liquid, and 160% by weight of talc. Part A, 3 parts by weight of synthetic bentonite, 200 parts by weight of mineral spirit, and 5 parts by weight of a silicone-based antifoaming agent were uniformly mixed to produce a colored paint A (light gray, pigment volume concentration 40%).
By adding 3 parts by weight of tetra-i-propoxytitanium as a crosslinking agent to the above-mentioned dispersion medium A and mixing them uniformly, the colored coating material A is gradually added and dispersed while continuing stirring, whereby 0. A colored particle dispersion A in which 8-1.2 mm light gray particles were dispersed was obtained.

Colored particle dispersion B
Instead of the colored paint A, 200 parts by weight of acrylic resin liquid, 23 parts by weight of white pigment liquid, 36 parts by weight of black pigment liquid, 160 parts by weight of talc, 3 parts by weight of synthetic bentonite, 200 parts by weight of mineral spirit, silicone-based antifoaming agent A colored particle dispersion B was obtained by the same production method as the colored particle dispersion A, except that 5 parts by weight of the colored paint B (dark gray, pigment volume concentration 40%) was used.

  The top coating material 1 was manufactured by mixing the colored particle dispersion A and the colored particle dispersion B obtained by the above method in a weight ratio of 60:40.

(Example 1)
The undercoat material 1 was brush-coated on a 100 × 100 mm slate plate so that the dry film thickness was 0.05 mm, dried for 3 hours, and then a joint material was adhered. As the joint material, a material having an adhesive layer on the back surface and a release paper layer on the surface (width 6 mm) was used.
Subsequently, the intermediate coating material 1 was spray-coated so that the dry film thickness was 1 mm, and after 30 minutes of coating, only the release paper on the surface of the joint material was removed and dried for 24 hours. Thereafter, the top coating material 1 was applied (dry film thickness of about 0.2 mm), and after drying for 6 hours, the joint material main body was removed. The test specimens were all coated and dried under standard conditions (temperature 23 ° C., relative humidity 50%).
After the test plate obtained by the above method was cured for 14 days in a standard state, a super UV tester (manufactured by Iwasaki Electric Co., Ltd.) was used as an accelerated weathering tester, and light irradiation was 6 hours / condensation 2 hours (total 8 hours) ) Was taken as one cycle and the test was conducted up to 40 cycles. As a result, no abnormality was observed.

(Example 2)
The test was performed in the same manner as in Example 1 except that the primer 2 was used instead of the primer 1. In Example 2, it was very easy to remove the joint material. No particular abnormality was observed in the accelerated weathering test.

It is the schematic which shows the makeup | decoration method of this invention.

Explanation of symbols

1: base material 2: primer material 3: joint material 4: adhesive layer 5: release paper 6: intermediate coating material 7: top coating material

Claims (2)

A first step of applying a primer to the substrate, a second step of applying a joint material, a third step of applying a finish coating material, and a fourth step of removing the joint material. A makeup method,
In the first step, a makeup method characterized by using an undercoat material containing 100 parts by weight of a synthetic resin as a solid and 5 to 500 parts by weight of an infrared reflective pigment.   The cosmetic method according to claim 1, wherein the infrared reflective pigment in the undercoat material is a metallic pigment having a particle diameter of 1 to 100 µm.

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