JPS5911666B2 - Manufacturing method of metal plating body - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method of manufacturing a metal plated body.

More specifically, the present invention relates to a method of obtaining a high-brightness metal plated body by forming a metal plating layer on a metal surface by vacuum evaporation or sputtering. A method is already known in which metal plating is performed on the surface of a metal molded product by vacuum evaporation or sputtering using metals such as aluminum, copper, chromium, nickel, or alloys thereof.

By the way, according to such conventional methods, a metal plating layer is formed directly on the surface of the metal adherend, but since the thickness of the metal plating layer is extremely thin, less than 1 micron, scratches on the bare surface,
The appearance was extremely poor due to lack of smoothness, and furthermore, the adhesion between the bare surface of the adherend and the metal plating layer was extremely poor, resulting in the metal plating layer often coming off.

Therefore, in order to compensate for these defects, a resin coating with a thickness of about 30 to 50 microns is interposed as a base coat layer between the bare surface of the adherend and the metal plating layer, and a metal plating layer is formed on the surface of the resin coating. This is commonly adopted. For the base coat layer, a resin solution prepared by dissolving melamine-alkyd resin, melamine-acrylic resin, etc. in an organic solvent is used as a raw material, and the resin solution is spray-painted and heated at 150 to 180°C for about 305 minutes. The layer was obtained by treatment and solidification. However, since such a method requires heat treatment at high temperature for a long time, it requires a huge amount of thermal energy and is not preferred from the viewpoint of production efficiency. Furthermore, since it contains a large amount of organic solvent, it is difficult to obtain a sufficient film thickness, which results in poor finished appearance of the metal plated body, and in addition, it is wasteful in terms of resource conservation. In recent years, from the standpoint of resolving the various problems mentioned above,
Many attempts have been made to apply a resin liquid of a polymer compound having unsaturated groups and to efficiently treat the problem in a short time using ionizing radiation or electromagnetic wave energy.

However, due to various difficulties, it has hardly reached the stage of practical use. One of the problems is as follows, taking the headlamp reflector of an automobile as an example. First of all, the reflecting surface of this type of reflecting mirror usually consists of an aluminum plating layer formed by vacuum evaporation. In the process of attaching the reflector to the vehicle body, it is necessary to solder one end of an electric circuit cord to the back surface of the reflector, or to perform waterproofing and sealing with an adhesive. In this case, it is of course inevitable that the product will be heated locally or in its entirety. As a result, a multicolored rainbow pattern or wrinkles appear on the surface of the aluminum plating layer on the opposite side, and the original shine of the aluminum plating disappears. In other words, it causes diffuse reflection, which makes it unable to function as a headlamp reflector. The present inventor has previously proposed a method for manufacturing metal-plated bodies that solves these problems, brings the use of ionizing radiation or electromagnetic wave energy to a practical stage, and has high production efficiency with short processing times.

(Patent application No. 53-33498 and Patent application No. 53-35883
) However, in the process of manufacturing headlamp reflectors for automobiles, for example, the biggest problem is the hub polishing process, which is repeated 7 to 8 times to remove press scratches on the bare surface and increase the brightness of the plating layer. As the demand for high-brightness plated products increases in the future, it will be necessary to increase the number of times the hub process is performed. In order to reduce the number of work steps in the hub polishing process, it is sufficient to form a base coat layer with a thickness necessary to fill in press scratches, but in order to fill in scratches on the bare surface, it is necessary to Although it depends, a thickness of approximately 100 microns is required.

Therefore, in order to obtain the required film thickness by overcoating the resin clear, it is necessary to apply it quite a number of times.Especially with the current high-temperature baking type resin clear mentioned above, each time requires high energy and a long time, and the production Not only is this undesirable from the viewpoint of efficiency, but overbaking also causes thermal deterioration of the lower layer film and decreases the mutual adhesion between the layers. The present invention solves the above-mentioned problems and provides a method for manufacturing a metal plated body with high production efficiency, which can be performed in a short time and eliminates the hub polishing step.

That is, the present invention provides (a) a metal surface with (b) a pigment selected from talc, silica, barium sulfate, and calcium carbonate;
) A resin liquid containing a polymerizable polymer and/or a polymerizable oligomer as a basic component containing a phosphorous element in the molecule, or (4) a resin liquid containing a polymerizable polymer and/or a polymerizable oligomer in the molecule. A step of applying a mixture of a polymerizable monomer containing a phosphorous element and a resin liquid having a basic component and solidifying it by irradiating ultraviolet rays to obtain a primer coat layer, (b
) A step of applying a resin liquid containing no pigment and having at least one unsaturated group in the molecule onto the primer coat layer, and solidifying it by irradiating it with ultraviolet rays to obtain a base coat layer; and (c) the step of obtaining the base coat layer. 1x10-5 on the surface of the base coat layer
The present invention relates to a method for manufacturing a metal-plated body, which comprises a step of forming a metal-plated layer by performing vacuum evaporation at a vacuum degree of T0rr or higher.

The present invention will be explained in more detail below. The resin liquid used in the primer coat of the present invention has (1) a polymerizable polymer and/or a polymerizable oligomer having a phosphorus element as a basic component, and optionally a polymerizable monomer having a phosphorus element, etc. (11) A composition comprising a polymerizable polymer and/or a polymerizable oligomer and a polymerizable monomer containing the phosphorus element as basic components. It is a composition made by mixing other polymerizable monomers, organic solvents, other photosensitizers, etc. as necessary, and polymerizable means that the composition has at least one unsaturated group in the molecule. It is something.

Considering the adhesion to active metal bare surfaces such as chromate-treated bare surfaces and galvanized bare surfaces, the composition (!1) above is most preferred.

When the above-mentioned (1) polymerizable polymer and/or polymerizable oligomer containing phosphorus element is used as a basic component, 50% by weight or less of the phosphorus element-containing polymerizable monomer and/or as necessary in the entire resin liquid composition. Alternatively, other polymerizable monomers may be contained.

However, if a phosphorus element-containing polymerizable monomer is used in combination, the monomer should be present in an amount of 1 to 30% by weight in the total composition of the resin liquid. The range shall be . or,
When the ([i) polymerizable polymer and/or polymerizable oligomer (a) and the polymerizable monomer (b) containing phosphorus element are used as basic components, the ratio of the two is (a)/(b). )9
9/1 to 70/30 (wt%), preferably 95/5 to
The ratio is 80/20 (wt%), and other polymerizable monomers are added as necessary to the total monomer amount (total of phosphorus element-containing polymerizable monomer and other polymerizable monomers) in the total resin liquid composition.
It can be added in such a range that the amount is 50% by weight or less. More specifically, the polymerizable polymer and/or oligomer is a polymer and/or oligomer having at least one unsaturated group in the molecule, such as unsaturated polyester resin, unsaturated Examples include acrylic resin, polyester-modified ataryl resin, epoxy-modified acrylic resin, urethane-modified acrylic resin, alkyd-modified acrylic resin, unsaturated group-containing polyolefin resin, and drying oil.

As an unsaturated polyester resin, Rigorak 2460
uv (Showa Kobunshi), Polylite CH-303 (Dainippon Ink & Chemicals), unsaturated acrylic resin Diabeam K83O3 (Mitsubishi Rayon), polyester modified acrylic resin Aronix M8O3O, Aronix M8O6O (Toagosei Chemical Industry) etc.

Also, as an epoxy modified acrylic resin, UcOat2Ol
(Toho Chemical Industries), Deitzkulite UE81OO, Deitzkulite UE82OO (Dainippon Ink Chemical Industries), etc. The urethane-modified acrylic resin is XP 1O77-40-2 (Nippon Gosei Kagaku) XP-5137-
70-2 (Nippon Gosei Kagaku), etc.

XP-1422 (
Nippon Gosei Kagaku), etc. Among the above polymers and/or oligomers, particularly preferred are polyester-modified acrylic resins and/or epoxy-modified acrylic resins.

Examples of the polymerizable monomer containing the phosphorus element include mono(2-hydroxytyl acrylate) acid phosphate, mono(2-hydroxyethyl methacrylate) acid phosphate, and mono(3-hydroxypropyl acrylate) acid phosphate. ate, mono(3-hydroxypropyl methacrylate) acid phosphate, di(2-hydroxyethyl acrylate) acid phosphate, di(2-hydroxyethyl methacrylate) acid phosphate, di(3-hydroxypropyl acrylate) acid phosphate, di(3-hydroxypropyl acrylate) acid phosphate, (3-Hydroxypropyl methacrylate) acid phosphate, phosphoric acid esters of acrylic or methacrylic acid containing hydroxyl groups, acrylic alcohol acid phosphate, vinyl phosphate, vinyl phosphonic acid, mono(2-hydroxyethyl acrylate) Acidophosphite, di(
2-hydroxyethyl acrylate) acid phosphite, di(2-hydroxyethyl methacrylate) acid phosphite, etc., and their salts and esters, and the like, and one or a mixture of two or more thereof, and particularly preferably mono(2-hydroxyethyl acrylate) acid phosphite, etc., and their salts and esters. These are phosphoric acid esters of acrylic acid or methacrylic acid containing a hydroxyl group, such as acrylate) acid phosphate, mono(2-hydroxyethyl methacrylate) acid phosphate, and di(2-hydroxyethyl acrylate) acid phosphate. Furthermore, examples of the polymerizable polymer or oligomer containing the phosphorus element include polymers or oligomers obtained from the polymerizable monomer containing the phosphorus element, or polymers obtained by modifying them with epoxy or polyester.

On the other hand, other polymerizable monomers used as optional components include monomers having at least one unsaturated group in the molecule, such as (a) (meth)acryloyl group-containing monomers, and (b) monomers containing (meth)acryloyl groups. They are aromatic vinyl group-containing monomers or (iii) aliphatic vinyl group-containing monomers.

Among the above (a), further hydroxyl group-containing monomers include 2
Examples include t-hydroxyethyl (meth)acrylate and 2-hydroxypropyl (meth)acrylate.

Examples of ether compounds of the hydroxyl group-containing monomer and alkyl alcohol or cyclic alkyl alcohol include methoxyethyl (meth)arylate, ethoxyethyl (meth)acrylate, and tetrahydrofurfuryl acrylate. Furthermore, as a styrene compound of (meth)acrylic acid and alkyl alcohol, methyl (meth)acrylate, butyl (meth)acrylate, neopentyl glycol di(meth)acrylate, 1-6 hexanediol di(meth)acrylate , trimethylolpropane tri(meth)acrylate, etc. The aromatic vinyl group-containing monomers (1) include styrene and vinyltoluene, and the aliphatic vinyl group-containing monomers (3) include vinyl acetate and vinylidene chloride, respectively. Particularly preferred among the above polymerizable monomers are ether compounds of the hydroxyl group-containing monomer and alkyl alcohol in group (a), and ether compounds of the hydroxyl group-containing monomer, (meth)acrylic acid and alkyl alcohol. It is an ester compound.

In the present invention, by using a resin liquid containing phosphorus element as the primer coat, the adhesion of the primer coat to the metal surface can be significantly improved.
As a result, physical and chemical properties such as corrosion resistance can be improved.

The primer coat layer of the present invention uses a pigment selected from talc, silica, barium sulfate and calcium carbonate. The pigment is preferable because it does not inhibit the curing of the primer coat layer with ultraviolet rays and has the effect of imparting thixotropy to the mixture with the resin liquid.

Of course, these pigments may be used as a mixture of two or more.

The mixing ratio of the resin liquid and pigment is determined depending on the amount of oil absorption of the pigment (
Although not particularly limited as it varies depending on the bulk specific gravity, the ratio is preferably 5 to 200 parts by weight of the pigment per 100 parts by weight of the resin liquid.

In order to obtain the mixture of the resin liquid and pigment, they are mixed using a known dispersing machine such as a roll, a dispersion machine, a sand mill, a ball mill, etc.

- On the other hand, the resin liquid having at least one unsaturated group in the molecule used in the base coat layer of the present invention has a polymerizable polymer and/or a polymerizable oligomer as a basic component, and can be used as needed. A composition made by mixing a polymerizable monomer, an organic solvent, and other photosensitizers.

The polymerizable polymer and/or polymerizable oligo used herein refers to the polymer and/or oligomer having at least one unsaturated group in the molecule used to obtain the primer coat layer. are all available. Particularly preferably, epoxy-modified acrylic resin and/or
Or polyester modified acrylic resin. Furthermore, as the polymerizable monomer used as an optional component, all of the other polymerizable monomers (a), (b), and (c) used to obtain the primer coat layer can be used. be. Particularly preferred are ether compounds of hydroxyl group-containing monomers in group (a) and alkyl alcohols, and ester compounds of (meth)acrylic acid and alkyl alcohols.

In the base coat layer of the present invention, as described above, an epoxy-modified acrylic resin or a polyester-modified acrylic resin is used as the polymerizable polymer and/or oligomer, and a polymerizable monomer containing a (meth)acryloyl group is used as the polymerizable monomer. A mixed resin solution is preferable, and is composed of 10 to 50 parts by weight of a polymerizable monomer to 90 to 50 parts by weight of a polymerizable polymer and/or oligomer from the viewpoint of surface smoothness and coatability of the base coat layer. Mixtures are most preferred.

These above-mentioned polymerizable polymers and/or oligomers,
The polymerizable monomer is not limited to only one type, and it is also possible to use two or more types in combination to bring out the characteristics of each. The "resin liquid" used in the primer coat layer and the base coat layer of the present invention has a polymerizable polymer and/or oligomer as a basic component, and the polymerization may be carried out as appropriate depending on the difficulty of the coating work, the surface condition of the coating film, etc. It is made by adjusting the viscosity and properties of the resin liquid by combining it with a synthetic monomer.

In particular, when a low viscosity resin liquid is required, an organic solvent is also used. Furthermore, in the present invention, since ultraviolet rays are used as an energy source for solidifying the resin liquid, it is necessary to add a photosensitizer to the resin liquid.

The photosensitizers include benzoin, benzoin methyl ether, benzoin isopropyl ether, benzyl, besozophenone, anthraquinone, naphthoquinone, chloranthraquinone, tetramethylthiuram disulfide,
Examples include diphenyl disulfide, 2,2-diethoxyacetophenone, benzoyl peroxide, azobisisobutyronitrile, 2,2'-azobispropane, etc., and the amount used depends on the polymerizability of the resin liquid. The amount is 0.05 to 15 parts by weight, preferably 2 to 5 parts by weight, based on 100 parts by weight of the total amount of the polymer and/or oligomer and the polymerizable monomer. Other additives such as a leveling agent, a polymerization inhibitor, and an anti-sagging agent may be added to the resin liquid of the present invention as necessary.

In the method for producing a metal plated body of the present invention, the mixture of the pigment and the resin liquid is first coated on the metal surface by a known method such as a roll coater, spray, curtain flow coater, etc. to a desired film thickness, preferably 70 mm. The coating is applied to a thickness of about 80 microns, and then activated energy using electromagnetic waves such as ultraviolet rays as an energy source is irradiated.

Next, the pigment-free resin liquid is applied to the surface of the primer coat layer in the same manner as described above to a desired film thickness, preferably 2.
After coating to a thickness of about 0 to 30 microns, the base coat layer is solidified by irradiation with the ultraviolet rays described above.

Next, a metal plating layer with a thickness of about 200 to 500 layers made of metals such as aluminum, chromium, nickel, copper, and alloys thereof may be formed on the surface of the solidified base coat layer by vacuum evaporation. As mentioned above, conventional metal plating bodies obtained by using known ionizing radiation or electromagnetic wave active energy irradiation and solidification as a base coat layer have poor heat resistance and have not been put to practical use. However, the inventor has developed a multicolored rainbow pattern, wrinkles,
As a result of investigating the cause of defects such as cracks, it was determined that the cause was a small amount of polymerizable monomer remaining in the base coat layer after solidification.

As a method for removing the residual polymerizable monomer, an attempt was made to extend the ultraviolet irradiation time, but this had little effect. In the pre-process of forming the metal plating layer first, the inventor of the present invention
An application was filed for a method for removing residual polymerizable monomers by heat-treating the base coat layer.

After that, as a result of various studies, it was discovered that by maintaining the degree of vacuum during vacuum evaporation at 1X10-5T0rr or higher and then applying a metal plating layer by vacuum evaporation, the same effect as heat treatment could be obtained. We have arrived at the present invention.

Conventionally, the vacuum degree of known vacuum evaporation plating is 3 x 10-4 ~
It is generally carried out at a vacuum of about 7×10 −5 T0rr, but this degree of vacuum is completely ineffective in removing the residual polymerizable monomer in the base coat layer.

It is presumed that by maintaining the base coat layer under a high degree of vacuum as in the present invention, there is an effect of suctioning and removing a small amount of the polymerizable monomer remaining in the base coat layer, and thus the surface of the base coat layer from which the remaining polymerizable monomer has been removed. A metal plating layer applied to the base coat layer is extremely effective in significantly improving the mutual adhesion between the base coat layer and the metal plating layer.

The metal-plated body thus obtained has extremely excellent heat resistance, with no multicolored rainbow patterns, wrinkles, cracks, etc. observed even when heated. Since the metal plating layer of the metal plating body obtained by the method of the present invention is an extremely thin film, for the purpose of protecting the plating layer and preventing contamination of the surface, a coat of the same type as that used for the base coat is applied to the surface of the metal plating layer for the purpose of protecting the plating layer and preventing contamination of the surface. Apply a resin liquid and solidify it by irradiating it with active energy using commonly used ionizing radiation and/or electromagnetic waves as an energy source, or use melamine-alkyd resin liquid, acrylic-alkyd resin liquid, acrylic resin liquid, etc. It is also possible to provide a surface protective layer by applying and solidifying a thermosetting resin solution, a room temperature curable resin solution such as a polyurethane resin solution, or an epoxy resin solution. Next, specific effects of the present invention will be explained by giving examples.

"Part" or "%" indicates "part by weight" or "% by weight".
Example 1 (1) UcOat2Ol: Manufactured by Toho Chemical Industry Co., Ltd. [Resin liquid B-1 for base coat layer] Epoxy-modified acrylic resin (same as above) 60 parts Xylol-limethylisobutylketone viscosity adjusted with a mixed solvent of equal amounts (
The above primer coat layer composition A1 (Food cup #4 measured viscosity 40 seconds) was spray-coated to a dry film thickness of 80 microns on the surface of an automobile headlamp reflector material that had been subjected to chromate treatment without hub polishing, and was left at room temperature. After setting for 10 minutes at
Irradiation distance is 20? with one lrL high pressure mercury lamp. So 6
A primer coat layer was obtained by irradiating for 0 seconds.

Next, on the primer coat layer, resin liquid B-1 for the base coat layer whose viscosity was adjusted with the above mixture (viscosity measured with a food cup #4 for 40 seconds) was spray-coated to a dry film thickness of 25 microns, and the mixture was sprayed for 10 minutes at room temperature. After setting for a minute, irradiation distance is 20CT with one high-pressure mercury lamp with lamp input of 80W/CjL! It was irradiated with L for 60 seconds. Next, vacuum evaporation was performed at a vacuum level of 1×10-5T0rr,
An aluminum metal film of 500λ was obtained. Example 2 (1) Diabeam K-4003 manufactured by Mitsubishi Rayon Co., Ltd. (2) Erosil #200 manufactured by Nippon Aerosil Co., Ltd. [Resin liquid B-2 for base coat layer] The above composition A-2 for primer coat layer was used. The viscosity was adjusted in the same manner as in Example 1, and after spray painting on the surface of the same material, 50% was applied in a hot air drying oven.
℃ for 5 minutes, and then irradiated with ultraviolet rays in the same manner to obtain a primer coat layer.

Next, the viscosity of the resin liquid B-2 for the base coat layer was adjusted in the same manner and sprayed, and after setting in a hot air drying oven at 50°C for 5 minutes, the irradiation distance was 20 with one high-pressure mercury lamp with a lamp input of 80W/CWL. ? It was irradiated for 60 seconds.

Immediately, vacuum evaporation was performed at a vacuum degree of 3 x 10-6 T0rr to obtain a 500mm aluminum metal film. Example 3 [Composition A-3 for primer coat layer] Epoxy modified acrylic resin (1) Aronix M8O3O Toagosei Chemical Industry Co., Ltd.
(2) Cyroid #308 manufactured by Fuji Davison Chemical Co., Ltd. [Resin liquid B-3 for base coat layer] Epoxy modified acrylic resin The above composition A-3 for primer coat layer was applied to the same material surface as in Example 1. It was applied and solidified in the same manner as in 2.

Next, the base coat layer resin liquid B-3 was applied and solidified in the same manner as in Example 2, and then immediately vacuumed at a degree of vacuum of 5 x 10-
An aluminum metal film of 500 was obtained by vacuum deposition at 6T0rr.

Example 4 The viscosity of the composition A-4 for the primer coat layer was adjusted in the same manner as in Example 1, and it was spray-painted on the surface of the same material to a dry film thickness of 60 mt, and after setting for 10 minutes at room temperature, A primer coat layer was obtained by irradiating with one high-pressure mercury lamp with a lamp input of 160 W/CrrL at an irradiation distance of 20 degrees for 60 seconds.

Next, the base coat layer resin solution B-4 whose viscosity was adjusted with the above mixed solvent (viscosity measured using a food cup #4 for 40 seconds) was spray-coated onto the primer coat layer so that the dry film thickness was 20 microns, and the mixture was heated for 10 minutes at room temperature. After setting for a minute, irradiation was performed for 60 seconds at an irradiation distance of 20 cm using one high-pressure mercury lamp with a lamp input of 80 W/(7 n).

Next, vacuum evaporation was carried out at a vacuum level of 1×10 −5 T0rr to obtain 500 aluminum metal films. Example 5 [Primer coat layer composition A-5] Polyester modified ataryl resin The viscosity of the primer coat layer composition A-5 was adjusted in the same manner as in Example 1, and a dry film thickness of 60 microns was formed on the surface of the same material. After spray painting, it is dried in a hot air drying oven for 50 minutes.
℃ for 5 minutes, and then irradiated with ultraviolet rays in the same manner to obtain a primer coat layer.

Next, the viscosity of the resin liquid B-5 for the base coat layer was adjusted in the same manner, and the film was spray coated to a dry film thickness of 25 microns. After setting in a hot air drying oven for 5 minutes, the lamp input was 80 W/Cr. ! Irradiation was performed for 60 seconds using a single L high-pressure mercury lamp at an irradiation distance of 20 m. Immediately, vacuum evaporation was performed at a vacuum level of 3 x 10-6 T0rr to obtain 500 aluminum metal films. Comparison Example 1 The composition A-1 for the primer coat layer and the resin liquid B-1 for the base coat layer were applied and solidified in the same manner as in Example 1 on the surface of the same material as in Example 1, and then 1×
Vacuum deposition was performed under the conditions of 10-4T0rr to obtain a 500A aluminum metal film.

Comparative Example 2 After applying and solidifying the composition A-2 for the primer coat layer and the resin liquid B-2 for the base coat layer on the same material surface as in Example 1 in the same manner as in Example 2. , vacuum evaporation was performed at a vacuum degree of 5×10 −5 T0rr to obtain an aluminum metal film with a thickness of 500λ.

Comparative Example 3 The primer coat layer composition A-3 and the base coat layer resin liquid B-3 were applied and solidified on the same material surface as in Example 1 in the same manner as in Example 3. After that, vacuum evaporation was performed at a vacuum degree of 7 × 10-5T0rr, and 500λ
An aluminum metal film was obtained.

Comparative Example 4 The primer coat layer composition A-6 was applied to the surface of the same material as in Example 1 and solidified in the same manner as in Example 2.

Next, resin liquid B-6 for base coat layer was applied and solidified in the same manner as in Example 3, and then aluminum vapor deposition was performed in the same manner under the condition of a degree of vacuum of 3×10 −4 T0rr. Said Example 1~
5. The metal-plated bodies obtained in Comparative Examples 1 to 4 were used to compare and evaluate their effects.

Test method (1) Appearance; brightness of the surface of the metal plating layer of the metal plating body,
Visually judge whether the smoothness is good or bad.

(2) Heat resistance: The metal plated body was left in a circulating hot air electric furnace at 180°C for 60 minutes, and after a specified period of time, the test piece was taken out of the furnace, allowed to cool naturally, and then the condition of the surface of the metal plated layer was visually judged.

(3) Adhesion: Using a cutter knife on the surface of the metal plating layer, the length is 27 nm and the width is 2 m! Create 100 squares by inserting cutting lines that reach each of the 11 bases at intervals of .

Cellophane tape was then pressed onto the squares, and after the cellophane tape was forcibly peeled off, the number of squares remaining in the primer coat layer remaining on the surface of the material was read and expressed in %.

It is clear from the comparative test results table that the test specimens obtained by the method of the present invention are excellent in appearance, heat resistance, and adhesion. Very useful as a reflector.

Claims (1)

[Scope of Claims] 1 (a) A pigment selected from talc, silica, barium sulfate and calcium carbonate, and (b) (i) a polymerizable pigment containing a phosphorus element in the molecule, on the metal surface. A resin liquid containing a polymer and/or a polymerizable oligomer as a basic component, or (ii) a polymerizable polymer and/or a polymerizable oligomer and a polymerizable monomer containing a phosphorus element in the molecule as basic components. A step of applying a mixture with a resin liquid and solidifying it by irradiating ultraviolet rays to obtain a primer coat layer, (b) a step of applying a mixture of a resin and a resin liquid and solidifying it by irradiating it with ultraviolet rays; (c) a step of applying a resin liquid having a 1×
A method for manufacturing a metal plated body comprising the step of forming a metal plating layer by performing vacuum deposition at a vacuum level of 10^-^5 Torr or more. 2 At least 1 in the molecules used in the base coat layer
The resin liquid having at least 50 to 90% by weight of a polymer and/or oligomer of an epoxy-modified acrylic resin and/or a polyester-modified acrylic resin and 50 to 1% by weight of a polymerizable monomer containing a (meth)acryloyl group
The method for producing a metal plated body according to claim 1, wherein the metal plated body is a mixture with 0% by weight. 3. The method of manufacturing a metal plated body according to claim 1, wherein the metal plating is aluminum or an alloy thereof.