JPH08300560A - Coating product - Google Patents

Abstract

PURPOSE: To provide superior bonding durability for a base surface for a long time by forming three layers consisting of a prime coat layer composed of a prime coating material of specified viscosity value containing fluoro- and aromatic-resin, an intercoat layer composed of an interlayer coating material of specified viscosity value including fluororesin and an inorganic pigment and a top coat layer composed of a top coating material of specified viscosity value containing fluorine. CONSTITUTION: A coated layer composed of three layers consisting of a top coat layer, an intercoat layer and a prime coat layer is formed on the surface of a base. Fluororesin and aromatic resin are contained in the prime coat layer, and the prime coat layer is formed by coating and burning a prime coating material of viscosity of 20-500000 pose. The intercoat layer contains fluororesin and the inorganic pigment, and the intercoat layer is formed by coating and burning an intercoat coating material of viscosity of 20-500000 poise. The top coat layer is formed by applying and burning a top coat coating material of viscosity of 20-500 poise. A primary close contact adhesive agent and/or a flowing agent is contained at least in one layer selected out of the prime layer, the intercoat layer and the top coat layer.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention provides excellent adhesion for a long period of time to a substrate having a smooth surface and a coating layer comprising at least three layers of an undercoat layer, an intermediate coating layer and an overcoat layer containing a fluororesin, The present invention relates to a coated product which can retain its sharpness for a long period of time even when a pattern is applied.

[0002]

2. Description of the Related Art A coated product having a metal surface coated with an aqueous paint in which a fluororesin such as tetrafluoroethylene polymer is dispersed is widely used in kitchen products such as frying pans, pots and hot plates. However, although the fluororesin is excellent in non-adhesiveness, chemical resistance, heat resistance, etc., it is difficult to directly coat the fluororesin on the metal surface because of its low affinity with other substances. Therefore, conventionally,
In order to improve the adhesion between the metal surface and the fluororesin coating layer, the metal surface is roughened by blasting, etching, etc., and an aqueous paint in which the fluororesin is dispersed is applied.

However, the surface of the coating layer also has an uneven shape reflecting the metal surface, and a clear mark or pattern cannot be formed. The present inventors previously proposed a screen printing ink containing a fluororesin as a main component (Japanese Patent Laid-Open No. 3-2174).
70), but the long-term adhesion durability with a smooth metal surface was insufficient.

[0004]

The present invention is directed to a substrate surface,
For example, it is an object of the present invention to provide a coated product which is obtained by coating a coating material containing a fluororesin on a smooth metal surface and has excellent long-term adhesion durability between the laminate and the substrate surface.

[0005]

Means for Solving the Problems The present inventor has prepared a coating layer containing a fluororesin by adding an aromatic resin having good adhesion to a substrate to the undercoat coating material to impart adhesiveness to the undercoat layer. It was found that the long-term adhesion between the laminated body composed of and the substrate can be maintained. Further, even if an aromatic resin is not added to the intermediate coating and the top coating, by adding an inorganic pigment for displaying a mark or a pattern in the intermediate coating, the colored intermediate coating layer becomes an undercoat layer. It has been found that it has good adhesion and that the topcoat layer has good adhesion to the intermediate coating layer.

That is, according to the present invention, an undercoat layer containing a fluororesin and an aromatic resin and having a viscosity of 20 to 500000 poise is obtained, and a fluororesin and an inorganic pigment having a viscosity of 20 to 500000. A coated product having at least three layers of an intermediate coating layer obtained by applying an intermediate coating composition of Poise and an upper coating layer obtained by applying an overcoat coating composition containing a fluororesin and having a viscosity of 20 to 500000 Poise.

In the present invention, it is preferable that at least one selected from the undercoat paint, the intermediate paint and the topcoat paint contains a primary adhesive and / or a fluidizing agent. That is, a fluidizer is used to express an appropriate fluidity of the coating material during coating, an appropriate coating viscosity for ensuring an appropriate coating layer thickness after coating, and shape maintenance and substrate surface after preliminary drying. It is preferable to add a primary adhesive agent to the coating material in order to ensure the adhesiveness.

The fluororesin used in the present invention is a polymer of a fluoroolefin such as tetrafluoroethylene or chlorotrifluoroethylene, or a copolymer of a fluoroolefin and a monomer copolymerizable with the fluoroolefin. Specifically, the following are preferably adopted.

Tetrafluoroethylene polymer (hereinafter referred to as P
TFE), tetrafluoroethylene / perfluoro (alkyl vinyl ether) copolymer (hereinafter referred to as PFA)
), Tetrafluoroethylene / hexafluoropropylene copolymer, tetrafluoroethylene / ethylene copolymer (hereinafter referred to as ETFE), chlorotrifluoroethylene polymer, chlorotrifluoroethylene / ethylene copolymer, fluorinated Vinylidene polymer, vinyl fluoride polymer, etc.

In order to favorably disperse these fluororesins in the production of paint, it is preferable to use powdery fluororesins. The average particle size of the fluororesin powder is 0.1-40
μm is preferred. If the average particle size is too small, the surface area of the particles in the solvent increases, making it difficult to disperse, and the thixotropy increases and coating becomes difficult. If the average particle size is too large, a smooth coating layer surface cannot be obtained, and the screen will be clogged during screen coating.

The aromatic resin is preferably a thermoplastic resin containing an aromatic ring such as a benzene ring or a naphthalene ring in the main chain, and is a polyimide resin, a polyamide resin, a polyamideimide resin (hereinafter referred to as PAI), Ether ether ketone resin, polyether sulfone resin (hereinafter,
PES), polyphenylene sulfide resin (hereinafter referred to as PPS), polyoxybenzoyl resin, polysulfone resin, polyketone sulfide resin and the like are preferably adopted.

The blending ratio of the fluororesin and the aromatic resin in the undercoat paint is preferably 10/90 to 90/10 (wt%), particularly preferably 10/90 to 50/50 (wt%). If the amount of the fluororesin is less than 10% by weight, it is difficult to obtain sufficient adhesion to the intermediate coating layer, and if the amount of the aromatic resin is less than 10% by weight, it is difficult to obtain sufficient adhesion to the substrate surface, particularly the metal surface.

The blending ratio of the fluororesin and the inorganic pigment in the intermediate coating material is 5/95 to 95/5 (% by weight), especially 40 /.
60 to 90/10 (% by weight) is preferable. If the content of the fluororesin is less than 5% by weight, the adhesion between the undercoat layer and the topcoat layer will be impaired, and if the content of the inorganic pigment is less than 5% by weight, coloring will be difficult.

The primary adhesive agent imparts thixotropy to the paint,
In addition, it provides adhesion after preliminary drying, and is not necessary in the stage of baking the coating film, and if it remains, the adhesion is adversely affected. For this reason, it is preferable that the primary adhesive agent be thermally decomposed to have a low molecular weight and volatilize without being carbonized during firing.
Carbonization impairs the color tone and adhesion of the fired coating layer. Specifically, methacrylic resins such as polyisobutyl methacrylate, poly t-butyl methacrylate, and polymethyl methacrylate are adopted.

A solvent is usually added to each paint in order to uniformly disperse the fluororesin powder in the paint or to dissolve the aromatic resin, the primary adhesive and the fluidizing agent.
The amount of the primary adhesion agent used is preferably 0.1 to 60% by weight, more preferably 0.1 to 30% by weight, based on the solvent. When the above-mentioned amount is used, appropriate thixotropy is imparted to each paint to obtain a good coating layer, and the shape of the laminate (coating layer consisting of at least three layers of an overcoat layer, an intermediate coating layer and an undercoat layer) Is retained and clear marks and patterns are obtained.

The fluidizing agent is used for exhibiting proper fluidity of the coating when a shearing force is applied to the coating during coating. The fluidizing agent is preferably one that is thermally decomposed and volatilized without being carbonized and remains during firing, and a cellulose resin,
Vinyl alcohol resin (for example, polyvinyl alcohol), polyvinyl pyrrolidone, etc. are mentioned. Preferred specific examples of the cellulosic resin include methyl cellulose, ethyl cellulose, acetyl cellulose, propyl cellulose, ethyl hydroxyethyl cellulose, ethyl hydroxypropyl cellulose and the like.

The amount of fluidizing agent used is 0.1 with respect to the solvent.
-40% by weight, particularly 0.1-20% by weight is preferred.
If it is less than 0.1% by weight, it is difficult to obtain good fluidity,
If it exceeds 5% by weight, the fluidity is impaired and it is difficult to obtain clear marks and patterns.

As described above, in order to uniformly disperse the fluororesin powder in the coating material or to dissolve the aromatic resin, the primary adhesive and the fluidizing agent, they evaporate or thermally decompose and volatilize during firing. Such a solvent is added to the paint. Specific examples of the solvent include glycol ethers and glycol esters, and the following are preferably used.

Ethylene glycol dimethyl ether, ethylene glycol monomethyl ether, ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dibutyl ether, ethylene glycol monoacetate, ethylene glycol monopropionate, ethylene Glycol diacetate, ethylene glycol dipropionate, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, diethylene glycol monoacetate, diethylene glycol monoether Ether acetate, diethylene glycol monomethyl ether acetate, diethylene glycol monobutyl ether acetate, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol monoethyl ether, tripropylene glycol monomethyl ether.

In addition, other α-terpineol (α,
α, 4-trimethyl-3-cyclohexene-1-methanol), pine oil, N-methyl-2-pyrrolidone,
Methyl isobutyl ketone, butyl acetate, ethyl acetate and isophorone are also preferably used.

As an inorganic pigment, Ti is used as a white pigment.
O ₂ type, ZnO type, ZnS type, CoO as blue pigment
Al ₂ O ₃ system, 3NaAlSiO ₄ · Na ₂ S ₂ system, black pigments Fe ₃ O ₄ system, CuO · Cr ₂ O ₃ system, red pigment Fe ₂ O ₃ system, yellow pigment TiO ₂
System, Fe ₂ O ₃ .SiO ₂ .Al ₂ O ₃ system, brown pigment Fe ₂ O ₃ system, purple pigment Co ₃ (PO ₄ ) ₂
A system is used. In addition, CaCO ₃ as an extender pigment
System, CaSO ₄ system, MgO / SiO ₂ system, SiO ₂ system,
Al ₂ O ₃ system, Al ₂ O ₃ · Si as silver mica
O ₂ type, Zn ₂ SiO ₄ type as fluorescent pigment, ZnS type,
Also used.

The coating method of the present invention includes:
Screen coating, air doctor coating, blade coating, rod coating, knife coating, pad coating, squeeze coating, impregnation coating, reverse roll coating, transfer roll coating,
Gravure paint, kiss roll paint, cast paint, spray paint, curtain paint, calendar paint, etc. can be adopted. In particular, by adopting screen coating, it is possible to easily obtain a clear laminate having a thick coating layer obtained by coating the high-viscosity coating material of the present invention and having a large covering power. Further, the screen painting requires less equipment than other paintings, and is preferably used for painting the paint in the present invention.

In order to obtain a clear laminated body having a thickness of 1 to 100 μm and no collapse of edges by these coatings, each of the top coat, middle coat and under coat paints of the present invention has a viscosity of 20. ~ 500,000 poise
If it is less than 20 poises, the coating fluidizes too much to obtain a clear image, and if it exceeds 500000 poises, the viscosity is too high to coat. Widely used general, eg PTFE
Aqueous paint cannot be used because its viscosity is too low. The number of times of undercoating, intermediate coating, and topcoating is at least one each, and it can be applied multiple times as needed.

A surfactant may be added to each of the coating materials of the present invention in order to improve the dispersion of the fluororesin powder. Further, an antioxidant may be added to prevent auto-oxidation of the resin component in each paint. Further, various additives such as a viscosity modifier and a dispersion stabilizer can be added.

A laminate obtained by coating each surface of a substrate such as a metal with a coating material having a suitable viscosity, thixotropy and fluidity, which is composed of a combination of substances having the above-mentioned constitutions, and a long-term It has adhesiveness and can make clear marks and patterns.

That is, when the undercoat paint applied as the undercoat is fired, the solvent is volatilized first, and then the primary adhesive,
The resin component of the fluidizing agent is thermally decomposed, and further, the aromatic resin or the fluororesin is melted, and the surface of the substrate, for example, the metal surface,
The undercoat layer firmly adhered to is obtained. As the substrate,
Any metal can be adopted. In the present invention, a smooth substrate can be used as the substrate. Regarding the surface smoothness of the substrate, for example, even if the surface roughness _Ra is 0.1 μm or less,
The present invention can be applied. Further, by adopting a smooth substrate, the surface of the coating layer becomes smooth, and further marks and patterns can be clearly applied. As the substrate, specifically, stainless steel, aluminum, aluminum alloy, iron, galvanized steel plate or the like can be adopted.

An intermediate paint is applied on this undercoat layer,
In addition, by coating the top coat on it and baking it, the solvent in the middle coat volatilizes first, as in the bottom coat, and then the resin components of the primary adhesive and fluidizing agent are thermally decomposed, and the fluororesin melts. As a result, an intermediate coating layer is obtained which is in close contact with the undercoat layer together with the inorganic pigment, and a similarly overcoated coating is obtained in the upper coating layer which is in close contact with the intermediate coating layer.

The coated product provided with the laminate thus obtained has a clearer surface of the laminate and is excellent in long-term adhesion, as compared with a product coated with a conventional fluororesin paint. Therefore, it is preferably used in a place where heat is received or oil stains are generated, which is represented by a kitchen hood such as a range hood and a gas table.

Specific products to which the coated product of the present invention is applied include the following.

Gas table, range hood, ventilation fan body, ventilation fan fan, kitchen wall material, oven inner wall, oven body, oven toaster inner wall and body, microwave oven body and inner wall, frying pan, hot plate, rice cooker pot, cake mold , Bowl, home bakery goods, pot, rice cake maker, gas water heater body,
Water purifier body, interior and exterior of tableware dryer, jar and pot inner, tabletop pan, kitchen knife, pickle tub and other kitchen-related products, iron, illuminator umbrella and exterior, washing machine interior and exterior, clothes dryer Interiors and exteriors, fans for fans, exteriors and exteriors for air conditioners, interiors and exteriors for hot air heaters and fans, home appliances such as audio panels, electronic components such as printed circuit boards, blinds, partitions, steel furniture, office equipment, ornaments, Interior products such as sanitary interiors and toiletry interiors, outer wall materials, roof materials, fences, gates, post boxes, rain gutters, awnings, shutters,
Guardrails, road signs, ship interiors, outdoor advertising materials, clothesline, water tanks, fuel tanks, vehicles, monuments,
Outdoor products such as objects.

[0031]

EXAMPLES The present invention will be described in more detail below with reference to Examples (Examples 1 to 10) and Comparative Examples (Examples 11 to 12), but the present invention is not limited thereto.

[Preparation of Oil] 11 g of ethyl cellulose and 1 g of polyisobutyl methacrylate were dissolved in a mixed solvent of 44 g of diethylene glycol dibutyl ether and 44 g of α-terpineol at 80 ° C. to prepare an oil.

[Preparation of undercoating composition] Fluorine resin powders and aromatic resin powders of the types and amounts shown in Table 1 and the amount (unit: g) of oil shown in Table 1 were thoroughly kneaded in advance and then three-rolled. Was passed twice to obtain undercoat paints B _{1 to} B ₅ . The viscosity (unit: poise) of the obtained undercoat paint at room temperature is also shown.

[0034]

[Table 1]

In Table 1, PFA has an average particle size of 7 μm (TW3507, product name of Asahi Glass), ETFE has an average particle size of 7 μm (Aflon LM740, product name of Asahi Glass), and PPS has an average particle size of 14.3 μm. (Fortron, a product name manufactured by Kureha Chemical Industry Co., Ltd.), PES has an average particle size of 2
0.1 μm (5003P, ICI product name), P
AI has an average particle size of 5.0 μm (Torlon, a trade name of Mitsubishi Chemical).

[Preparation of intermediate coating composition] Fluororesin powders of the types and amounts shown in Table 2, inorganic pigments and the amount (unit: g) of oil shown in Table 2 were well kneaded in advance, and then three rolls were used twice. The intermediate coating materials M _{1 to} M ₈ were passed through. The viscosity (unit: poise) of the obtained intermediate coating material at room temperature is also shown.

[0037]

[Table 2]

In Table 2, PFA has an average particle size of 7 μm (JW2000 crushed product, Asahi Glass product name), PTF.
E is an average particle size of 0.2 μm (L-170J, product name manufactured by Asahi IC-Fluoropolymers), and ETFE is an average particle size of 7 μm (Aflon LM740, product name manufactured by Asahi Glass).

[Preparation of Topcoat Paint] The fluororesin powders of the types and amounts shown in Table 3 and the amount (unit: g) of oil shown in Table 3 were thoroughly kneaded in advance and then passed through a three-roll roll twice to give the topcoat paint. It was T ₁ ~T _5. The viscosity (unit: poise) of the obtained top coating composition at room temperature is also shown.

[0040]

[Table 3]

[0041] In Table 3, PFA has an average particle size of 7μm those of (JW2000 pulverized product, manufactured by Asahi Glass Co., trade name) [except those having an average particle size of 30μm in the top coat paint T ₃ (T
W3530, product name of Asahi Glass),], PTFE having an average particle size of 0.2 μm (L-170J, product name of Asahi IC Eye Fluoropolymers), ETFE having an average particle size of 7 μm
(Aflon LM740, a product name manufactured by Asahi Glass).

[Example 1] The undercoat paint B ₁ was passed through a 120-mesh screen to print the entire surface on a smooth steel plate having _a surface roughness _Ra of 0.059 µm, dried at 150 ° C for 10 minutes, and then at 320 ° C for 6 minutes. It was baked for minutes to form an undercoat layer. After cooling to room temperature, the intermediate coating material M ₁ was printed on the entire surface of the undercoat layer through a 180-mesh screen and dried at 150 ° C. for 10 minutes. After cooling to room temperature, the intermediate coating material M ₂ is passed through a 200 mesh screen and printed in a grain pattern,
It was dried at 150 ° C. for 10 minutes.

After cooling to room temperature, the top coating composition T ₁ is applied to the entire surface through a 150-mesh screen, dried at 150 ° C. for 10 minutes, and baked at 380 ° C. for 10 minutes to form a four-layered layer having a thickness of 21 μm. A coated product having a laminated body of was obtained. The coated product has image clarity,
It has excellent heat resistance and non-adhesiveness, and the adhesion between the laminate and the steel sheet has shown excellent performance over a long period of time.

The adhesion test is conducted according to JIS
It carried out according to K-5400. Laminate the gap 1
The coated product cross-cut in a grid pattern of 100 mm squares was immersed in boiling water for 1 hour, dried, and then an adhesive tape was applied, and the state of adhesion of the laminated cells after peeling was visually observed. As for the eye, 100 pieces remained. Further, when the coated product was immersed in a chlorine-based bleach stock solution (household bleach, trade name, Kitchenhitter) for 12 hours and the appearance of the laminate was observed, there was no change in appearance. These tests correspond to accelerated tests of gas table use for 3-4 years.

[0045] [Example 2] except that using a primer paint B ₂ instead of primer coating B ₁ represents in the same manner as in Example 1, thickness 20μ
A coated product having a laminated body of m was obtained. The performance of the coated product was the same as in Example 1.

[0046] [Example 3] Another Using primer coating B ₃ instead of primer coating B ₁ represents in the same manner as in Example 1, thickness 22μ
A coated product having a laminated body of m was obtained. The performance of the coated product was the same as in Example 1.

[0047] Other using intermediate coating M ₃ in place of Example 4 intermediate paint M ₁ in the same manner with Example 1, thickness 21μ
A coated product having a laminated body of m was obtained. The performance of the coated product was the same as in Example 1.

[0048] Other using intermediate coating M ₄ instead of Example 5 intermediate paint M ₁ in the same manner as Example 1, thickness 20μ
A coated product having a laminated body of m was obtained. The performance of the coated product was the same as in Example 1.

Example 6 The same procedure as in Example ₁ except that the overcoating material T ₂ was used in place of the overcoating material T 1, and the thickness was 20 μm.
A coated product having a laminated body of m was obtained. The performance of the coated product was the same as in Example 1.

[Example 7] A thickness of 22 μm was obtained in the same manner as in Example 1 except that the overcoating material T ₃ was used instead of the overcoating material T _1.
A coated product having a laminated body of m was obtained. The performance of the coated product was the same as in Example 1.

[0051] [Example 8] using the intermediate coating M ₅ instead of the intermediate coating M _1, using the intermediate coating M ₆ in place of the intermediate coating M _2, top coat paint instead of the top coat paint T ₁ In the same manner as in Example 1 except that T ₄ was used, a coated product having a laminate having a thickness of 22 μm was obtained. The performance of the coated product was the same as in Example 1.

[Example 9] The undercoat paint B ₄ was passed through a 150-mesh screen to print the entire surface on a smooth steel plate, and the temperature was 150 ° C.
And dried for 10 minutes to form an undercoat layer. After cooling to room temperature, the intermediate coating composition M ₇ was printed on the undercoat layer through a 120-mesh screen to form a grain pattern and dried at 150 ° C. for 10 minutes.

Further, the intermediate coating M ₈ was passed through a 150-mesh screen to print a fine grain pattern,
It was dried at 150 ° C. for 10 minutes. Finally, overcoat T ₅ through a 120-mesh screen and print it over 150
After drying at 10 ° C. for 10 minutes, baking was performed at 350 ° C. for 10 minutes to obtain a coated product in which a laminate having four layers and a thickness of 22 μm was formed. The coated product was excellent in image clarity by two-color printing, heat resistance, and non-adhesiveness, and the adhesion between the laminate and the steel sheet showed excellent performance for a long period of time.

[0054] [Example 10] Other Using primer coating B ₅ instead of primer coating B ₁ represents in the same manner as in Example 1, thickness 23
A coated product having a laminated body of μm was obtained. The performance of the coated product was the same as in Example 1.

[Example 11] The top-coating paint T ₁ was passed through a 150-mesh screen and printed over the entire surface of a smooth steel plate.
After drying at 50 ° C for 10 minutes, baking at 380 ° C for 10 minutes 1
A coated product with a coating thickness of 0 μm was obtained.
The adhesion between the coating film and the steel sheet was insufficient, and 53 cross-cut cross-cut cells remained, and the coating film swelled after being immersed in the chlorine-based bleach stock solution for 12 hours.

[Example 12] A water-based PTFE-based undercoating paint (Loriental Coat Primer LA4639BK, trade name of Asahi IC Fluoropolymers) having a viscosity of 1.2 poises at room temperature was passed through a 100-mesh screen onto a smooth steel plate. Printed all over. However, the paint flowed and sagging occurred.

After drying at 120 ° C. for 10 minutes, it was dried at 320 ° C. for 6 minutes.
Bake for minutes. After cooling to room temperature, a water-based PTFE intermediate coating with a viscosity of 1.5 poises at room temperature (Loriental Coat LA2039PW, a product name of Asahi IC Eye Fluoropolymers) is passed through a 150 mesh screen to print a grain pattern. However, the paint flowed and sagging occurred, and a grain pattern could not be formed.

After being dried at 120 ° C. for 10 minutes, it was cooled to room temperature, and water-based PT having a viscosity at room temperature of 1.8 poise was added on it.
FE topcoat (Loriental coat topcoat LA80
32PW, product name made by Asahi IC Floropolymers)
Was fully printed through a 120-mesh screen. The paint flowed and sagging occurred.

After drying at 120 ° C. for 10 minutes, 1 at 380 ° C.
Bake for 0 minutes. The resulting laminate had no grain pattern, and a coated product having a flat portion thickness of 10 μm was obtained. Regarding the adhesion between the laminate and the steel sheet, 61 cross-cut grids remained, and the laminate blistered after being immersed in the chlorine-based bleach stock solution for 12 hours.

[0060]

EFFECTS OF THE INVENTION A high-viscosity undercoat paint containing a fluororesin and an aromatic resin, a high-viscosity intermediate paint containing a fluororesin and an inorganic pigment, and a fluororesin on a substrate surface, for example, a smooth metal surface. By coating with a high-viscosity topcoating agent contained therein, excellent long-term adhesion durability and surface non-adhesiveness between a laminate comprising at least three layers of an undercoating layer, an intermediate coating layer, and an overcoating layer, and surface non-adhesiveness, A coated product with clear marks and patterns can be obtained.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location B32B 27/20 B32B 27/20 A C09D 127/18 PFJ C09D 127/18 PFJ (72) Inventor Yokota Masataka, 3-4474 Tsukakoshi, Sachi-ku, Kawasaki-shi, Kanagawa Asahi Glass Co., Ltd., Tamagawa Branch (72) Inventor, Hiroshi Taya 3-chome, Tsukoshi-chome, 3-4-2, Asahi Glass, Kawasaki, Kanagawa (72) Inventor, Tashiro Renta, 2725-2 Kose, Seki City, Gifu Prefecture, In Creative Products Tashiro Co., Ltd. (72) Inventor, Toru Higo 2-125, Nishi-chome, Nishi-chome, Joto-ku, Osaka City, Osaka Prefecture

Claims (7)

[Claims] 1. A viscous resin containing a fluororesin and an aromatic resin and having a viscosity of 2
An undercoat layer obtained by applying an undercoat paint of 0 to 500000 poise and a viscosity of 2 including a fluororesin and an inorganic pigment.
An intermediate coating layer obtained by applying an intermediate coating composition of 0 to 500000 poise and a fluororesin having a viscosity of 20 to 5000
A coated product having at least 3 layers of a top coat obtained by applying a top coat of 00 Poise. 2. At least one selected from an undercoat paint, an intermediate paint and a topcoat paint is a primary adhesive and / or
Alternatively, the coated product of claim 1 further comprising a fluidizing agent. 3. The fluororesin is a tetrafluoroethylene polymer, a tetrafluoroethylene / perfluoro (alkyl vinyl ether) copolymer, a tetrafluoroethylene / hexafluoropropylene copolymer, a tetrafluoroethylene / ethylene copolymer, chloro. The coated product according to claim 1 or 2, which is selected from the group consisting of trifluoroethylene polymers, chlorotrifluoroethylene / ethylene copolymers, vinylidene fluoride polymers and vinyl fluoride polymers. 4. The coated product according to claim 1, wherein the aromatic resin is a thermoplastic resin containing an aromatic ring in the main chain. 5. A group of aromatic resins comprising polyimide resins, polyamide resins, polyamideimide resins, polyetheretherketone resins, polyethersulfone resins, polyphenylene sulfide resins, polyoxybenzoyl resins, polysulfone resins, polyketone sulfide resins. The coated product of claim 4 selected from: 6. A metal coating obtained by coating an undercoat paint, an intermediate paint and a top paint on a metal surface.
Any of the coated products. 7. The coated product according to claim 1, wherein at least one selected from an undercoat layer, an intermediate coat layer and an upper coat layer is formed by screen coating.