JP2004035996A - Manufacturing method for and manufacturing line of plated and coated product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method for and manufacturing line of plated and coated product, by which a conventional etching process becomes unnecessary, all processes can be automated, manufacturing cost is greatly reduced. <P>SOLUTION: The manufacturing method for and manufacturing line of the plated and coated product comprizes at least an undercoating layer forming process to form an undercoat layer on a surface of a substrate by spray coating, and an electroless plating process to form a electroless plating layer by spraying type electroless plating on the above-mentioned under coat layer, and a coating process to form a protective film and/or toned coating film on the electroless plating layer by the spray coating, and above-mentioned processes are controlled and operated continuously and automatically by a robot for coating. <P>COPYRIGHT: (C)2004,JPO

Description

【００４４】
次に、携帯電話の筐体に前記めっき塗装を行った後の塗膜について、下記方法により硬度、光沢性、ゴバン目試験、及びシールド性を評価した。結果を表２に示す。なお、比較例１として、エッチング工程を含む従来の浴式無電解めっきを施した基体を用いた。
【００４５】
＜硬度＞
ＪＩＳ　Ｋ５６００鉛筆法に準拠して行った。
＜光沢性＞
６０°鏡面反射率を測定した。
＜ゴバン目試験＞
ＪＩＳ　Ｋ５４００に準拠して行った。
＜シールド性＞
デュアルチャンバー法によりシールド性能を測定した。
【００４６】
【表２】

表２の結果から、実施例１は比較例１の従来の浴式のものに比べて、工程数が少なくなり、処理時間の短縮が可能となるにもかかわらず、同等レベルの優れたシールド性を備えていることが認められる。
【００４７】
【発明の効果】
以上説明したように、本発明のめっき塗装製品の製造方法及びめっき塗装製品の製造ラインによれば、従来の効率の悪いエッチング工程が不要となり、全工程を自動化し得、製造コストを大幅に低減化することができる。
また、本発明によれば、仕様が異なる製品が混在しても、自動化が容易であり、大量、少量であっても効率よく安定して均一な電磁波遮蔽特性と豊富な外観性を携帯電話、ＰＨＳ、携帯情報端末、デジタルカメラ、テレビ、ラジオ、カセットデッキ、パソコン及びパソコン周辺機器から選ばれる筐体に付与することができる。
【図面の簡単な説明】
【図１】図１は、本発明の無電解めっき工程で用いる塗装ロボットの双頭ガン部分の拡大図である。
【図２】図２は、本発明の一実施例に係る塗装ロボットを示す概略図である。
【図３】図３は、本発明の一実施例に係るめっき塗装製品の製造ラインを示す模式図である。
【図４】図４は、実施例でめっき塗装を施した携帯電話の筐体の一部省略断面図である。
【図５】図５は、実施例でめっき塗装を施した携帯電話の筐体の一部省略断面図である。
【符号の説明】
１、６　　基体
３　　エア制御盤
４　　エア圧力センサー
５　　中央制御盤
７　　塗装ガン
８　　塗装ロボット
９　　塗料ポンプ
１０　　塗装ポンプ制御盤
１１　　ロボット制御ユニット
１３　　アンダーコート層
１５　　銀めっき膜
１７　　プライマー膜
１９　　調色塗膜
２０　　アンダーコート層形成ライン
３０　　無電解めっきライン
４０　　塗装ライン
５０　　めっき塗装ライン[0001]
TECHNICAL FIELD OF THE INVENTION
INDUSTRIAL APPLICABILITY The present invention eliminates the need for a conventional complicated etching process, can automate the entire process, significantly reduces manufacturing costs, and provides a method for manufacturing a plated coating product, and provides uniform electromagnetic wave shielding properties and abundant appearance. Related to the production line of plated painted products.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a casing selected from a mobile phone, a PHS, a portable information terminal, a digital camera, a television, a radio, a cassette deck, a personal computer, and a personal computer peripheral device can be provided with an electromagnetic wave shielding property, thereby improving a sense of quality and beauty. For the purpose, metallic luster has been provided.
[0003]
As a method for imparting the metallic luster, bath-type electroless plating or paint-type electroless plating is usually performed. In the case of the bath type electroless plating, the maintenance of the solution and the management of the bathtub are required, and the efficiency is low. In the case of bath-type electroless plating, it is possible to automate a large number of products, but it is difficult to quickly respond to differences in product specifications. Is required.
On the other hand, in the case of the coating type electroless plating, the etching step can be omitted, but there is a problem that the strength of the plated coating film is insufficient.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to solve the conventional problems and to solve the following problems in response to the above demands. That is, the present invention eliminates the need for conventional inefficient etching processes, can automate the entire process, and greatly reduces the manufacturing cost of a plated coating product manufacturing method, uniform electromagnetic wave shielding characteristics and abundant appearance. It is an object of the present invention to provide a production line for a plated coating product that can provide a coating.
[0005]
[Means for Solving the Problems]
The present inventors have conducted intensive studies to solve the above problems, and as a result, connect the undercoat forming line, the electroless plating line, and the painting line, and continue painting the substrate after the electroless plating. As a result, it has been found that the entire process can be continuously and automatically controlled, transportation costs, work costs, and the like can be significantly reduced, and manufacturing costs can be significantly reduced.
[0006]
Further, according to the present invention, the casing has sufficient strength, and even if products having different specifications are mixed, automation is easy, and even if a large quantity or a small quantity is used, it is efficient, stable and uniform. It has been found that various electromagnetic wave shielding characteristics and abundant appearance can be imparted to a housing selected from a mobile phone, a PHS, a portable information terminal, a digital camera, a television, a radio, a cassette deck, a personal computer, and a personal computer peripheral device.
[0007]
That is, means for solving the above problems are as follows.
<1> After forming an electroless plating layer on the entire surface of the substrate by a coating type electroless plating, spraying a toning paint on the electroless plating layer to impart uniform electromagnetic wave shielding characteristics and abundant appearance. This is a method for producing a plated coating product.
<2> an undercoat layer forming step for forming an undercoat layer by spray coating on the entire surface of the base;
An electroless plating step for forming an electroless plating layer by painting electroless plating on the entire surface of the undercoat layer,
A coating process for forming a protective film and / or a toned coating film by spray coating on the electroless plating layer,
Wherein each of the steps is performed under continuous automatic control by a coating robot.
<3> The plating product according to <2>, wherein the undercoat material in the undercoat layer forming step is selected from a silicone acrylic resin, an acrylic urethane resin, an ultraviolet curable resin, an epoxy resin, a polyimide resin, and a polyurethane resin. Is a manufacturing method.
<4> The method according to any one of <1> to <3>, wherein the electroless plating is performed by a painting robot having a double-headed gun.
<5> The electroless plating layer according to any one of <1> to <4>, wherein the electroless plating layer is any one selected from silver, copper, nickel, palladium, gold, platinum, rhodium, tin, cobalt, lead, and ruthenium. This is a method for manufacturing a plated product.
<6> The base is any one of <1> to <5>, which is a housing selected from a mobile phone, a PHS, a personal digital assistant, a digital camera, a television, a radio, a cassette deck, a personal computer, and a personal computer peripheral device. This is a method of manufacturing a plated coating product.
<7> an undercoat layer forming line for forming an undercoat layer by spray coating on the entire surface of the substrate;
An electroless plating line for forming an electroless plating layer by painting electroless plating on the entire surface of the undercoat layer,
A coating line for forming a protective film and / or a toned coating film by spray coating on the electroless plating layer,
Wherein a coating robot is arranged along the transport direction of each of the lines, and the lines are connected to each other.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
<Production method of plating painting products>
As a first aspect, the method for producing a plated coated product of the present invention comprises forming an electroless plating layer on the entire surface of a substrate by coating electroless plating, and then spray-coating a toning coating on the electroless plating layer. It is.
In a second aspect of the present invention, there is provided a method for producing a plated coating product, comprising: an undercoat layer forming step for forming an undercoat layer by spray coating on the entire surface of the substrate; It includes at least an electroless plating step for forming an electroless plating layer by plating, and a painting step, and further includes a pretreatment step, a drying step, a washing step, and the like, as necessary.
According to the method for producing a plated product according to the first and second aspects, uniform electromagnetic wave shielding characteristics and abundant appearance can be provided.
[0009]
-Substrate-
The substrate is not particularly limited in size, shape, etc., and can be appropriately selected depending on the purpose. For example, the substrate may be a mobile phone, a PHS, a portable information terminal, a digital camera, a television, a radio, a cassette deck, Examples include a personal computer (notebook type, desktop type), a printer, a CD-R drive, a CD-RW drive, a DVD drive, a modem, a TA, and a case selected from personal computer peripheral devices such as a PC camera.
[0010]
The material of the base is not particularly limited and can be appropriately selected depending on the purpose. Examples thereof include glass and plastic.
Examples of the glass include soda-lime glass.
The plastic may be any of a thermoplastic resin and a thermosetting resin. For example, polyolefin (polyethylene, polypropylene, etc.), polyvinyl chloride, polystyrene, polyester (polyethylene terephthalate, etc.), acrylic resin [methyl (meth) ) Acrylate, (meth) acrylic acid resin, etc.], ABS resin, polycarbonate, polyamide, polyarylate, polyallyl sulfone, polyetherimide, polyether sulfone, polymethylpentene, polysulfone, styrene copolymer (acryl-styrene copolymer) Polymer, butadiene-styrene copolymer, styrene-acrylonitrile copolymer, etc.), fluororesin, and the like.
[0011]
In addition, a coloring agent may be added to the above-mentioned materials such as glass and plastic in order to improve appearance and decorativeness. As the colorant, for example, inorganic pigments such as carbon black, chrome vermillion, red iron oxide, lead chromate, yellow iron sulfide, titanium yellow, chrome green, chromium oxide, ultramarine blue, and cobalt blue can be used. In addition, organic pigments such as Lake 4R can be used. Furthermore, an unprecedented appearance can also be obtained by applying an acrylic paint or the like to which a coloring agent has been added.
[0012]
-Undercoat layer forming process-
In the undercoat layer forming step, the undercoat layer is formed by spray coating in order to make the plating film in the electroless plating line firmly adhere to the substrate surface and make it difficult to peel off.
[0013]
The undercoat layer is not particularly limited and may be appropriately selected depending on the intended purpose. For example, it is preferable that the undercoat layer is formed by drying a primer containing titanium alkoxide. The primer layer can be formed by applying a primer containing a resin that can be dissolved or dispersed in water and an organic solvent to the inner surface of the container and drying the applied primer. Further, the resin preferably has a functional group capable of forming a chemical bond (such as a hydrogen bond) with a hydroxyl group bonded to titanium generated by hydrolysis of titanium alkoxide. Examples of such a resin include, as functional groups, an ester bond, an ether bond, an amide bond, a urethane bond, a urea bond, an imide bond, a hydroxyl group, a carboxyl group, an amino group, and a mercapto group. Amino alkyd resin, acrylic resin, melamine resin, polyurethane, polyester, polyamide, epoxy resin, phenol resin, cellulose resin, and the like can be used.
Among these resins, silicone acrylic resin, alkyd resin, acrylic resin and the like are preferable because the solvent can be removed and dried at room temperature. In particular, when the material forming the container is plastic, it is preferable to use an acrylic resin. A primer layer made of a primer containing these resins is tough and has excellent adhesion and adhesion to a silver plating layer. Acrylic resins are more preferred because they are particularly excellent in adhesion and transparency. The alkyd resin is also quick-drying and excellent, but may have low adhesion depending on the material of the container. Therefore, it is preferable to use after confirming that the adhesiveness is sufficient.
[0014]
As the “titanium alkoxide” contained in the primer agent, those composed of monomers such as tetra-iso-propoxytitanium and tetra-n-butoxytitanium can be used. Further, a polymer such as tetra-n-butoxytitanium dimer produced by a dehydration condensation reaction of several molecules of these monomers can also be used. Of these, tetra-n-butoxytitanium dimer is particularly preferable because it is hardly decomposed by moisture in the primer agent and can easily adjust the hydrolysis rate after coating.
The method of forming the undercoat layer is performed by spray coating using a coating robot.
The thickness of the undercoat layer is preferably 3 μm to 20 μm, more preferably 5 μm to 10 μm.
[0015]
-Electroless plating process-
The electroless plating in the electroless plating step is not particularly limited, for example, silver, copper, nickel, palladium, gold, platinum, rhodium, tin, cobalt, lead, ruthenium, and the like. Silver is preferred because it has the highest electrical conductivity.
[0016]
The electroless plating layer is formed on the entire surface (front and back) of the substrate. As the electroless plating method, a method using an oxidation-reduction reaction, a method using a substitution reaction, or the like can be used. For example, silver, copper, nickel, palladium, gold, platinum, rhodium, tin, cobalt, lead, ruthenium, etc. are plated by the ions of the metal to be plated exhibiting a self-catalytic reduction reaction in the electroless plating solution. And a method utilizing a silver mirror reaction.
[0017]
Specifically, it is preferable to carry out the two solutions of the solution containing silver ions and the reducing solution by using a painting robot having a double-headed gun as shown in FIG.
Here, an aqueous solution of a water-soluble silver salt such as silver nitrate is used as the solution containing silver ions. The silver salt may be a complex salt. For example, an aqueous solution of an ammoniacal silver nitrate complex formed by adding ammonium hydroxide to an aqueous solution of silver nitrate is preferably used. In this case, a solution containing 0.3 to 3% by mass of silver nitrate is preferable. If the silver ion concentration is too low, the deposition of silver is delayed and a good silver plating layer is difficult to be formed. Conversely, if the silver ion concentration is too high, silver deposition may not be performed smoothly on the surface of the undercoat layer. .
[0018]
Examples of the reducing agent used in the reducing solution include glyoxal, formaldehyde, hydrazine sulfate, and hydrazine hydroxide. The reducing agent functions to reduce the silver ions by a reduction reaction to precipitate silver. The concentration of the reducing agent is determined in accordance with the concentration of the aqueous silver compound solution, and the concentration of the reducing agent is preferably about 2 to 10% by mass. If the concentration of the reducing agent is too low, it becomes difficult to form a good silver plating layer by delaying silver deposition, whereas if it is too high, silver deposition may not be performed smoothly on the undercoat layer surface. It is.
[0019]
The temperature of the silver ion solution and the reducing solution is preferably set to about 10 to 20 ° C. If the temperature is too low, the precipitation of silver becomes insufficient, and if it is intended to precipitate sufficiently, the concentration of the silver ion solution must be increased, which is uneconomical. Conversely, if the temperature is too high, the silver deposition rate will be too high, and the silver plating layer will be clouded.
[0020]
After performing the silver mirror reaction, it is preferable to wash with warm water to remove by-products generated by the silver mirror reaction. Further, it is preferable to dry at a high temperature for draining water for washing.
The thickness of the plating layer is preferably from 0.1 μm to 10 μm, more preferably from 1 μm to 5 μm.
[0021]
-Painting process-
In the coating step, a protective film and / or a toned coating film is formed on the electroless plating layer by spray coating.
[0022]
The protective layer is for imparting functions such as weather resistance, heat resistance, water resistance, and scratch resistance to the surface of the electroless plating layer.
[0023]
The protective layer is not particularly limited and may be appropriately selected depending on the intended purpose.Examples include a liquid resin containing no solvent, a solution in which the resin is dissolved in water or an organic solvent, or a dispersion in which the resin is dispersed. It can be formed by a liquid. In addition, it is preferable that these resins are selected according to the characteristics of the material constituting the base material and the like, and a solution or a dispersion liquid is applied to a metal layer, dried, and has a small shrinkage when forming a protective layer. Is preferred. As such a resin, a liquid epoxy resin, an unsaturated polyester resin, a fluorine resin, an acrylic resin, an acrylic silicone resin, an acrylic urethane resin, a melamine resin, a silicone resin, a modified silicone resin, or the like can be used. Further, urethane resin, polyester, polyvinylidene chloride, and the like can be used, and these can be used as an aqueous emulsion resin. In addition, organic-inorganic hybrid coating agents, ceramic coating agents, and the like can also be used.
[0024]
The toning coating is to impart design, decoration, luxury, aesthetics, and design to the entire surface (particularly the surface) of the substrate by using a toning coating, and there is no particular limitation, and any purpose can be used. It can be appropriately selected, and for example, a usual spray coating method can be adopted. In addition, when performing various kinds of toning coating, it can be performed by arranging a plurality of coating robots in parallel along the coating line.
[0025]
As the toning film forming material, a material in which a resin and a colorant (pigment or dye) are dissolved in water or an organic solvent can be used.
Examples of the resin material include a silicone acrylic resin, an acrylic urethane resin, an ultraviolet curable resin (for example, an acrylic oligomer), an epoxy resin, a polyimide resin, and a polyurethane resin.
[0026]
The colorant is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include a yellow primary color, a cyan primary color, a magenta primary color, a white primary color, and a black primary color, and combinations thereof.
[0027]
Colorants for the yellow primary color slurry paint include yellow iron oxide, titanium yellow, naphthol yellow S, Hansa yellow 10G; 5G; 3G; G; GR; A; RN; R, pigment yellow L, benzidine yellow, benzidine yellow G GR, permanent yellow NCG, Vulcan first yellow 5G; R, tartrazine lake, quinoline yellow lake, anthragen yellow 6GL, permanent yellow FGL; H10G; HR, anthrapyridine yellow, Nova palm yellow H2G, Hansa yellow 3R, etc. Can be
[0028]
Examples of the colorant for the cyan primary color slurry paint include gun blue, navy blue, cobalt blue, cerulean blue, alkali blue lake, peacock blue lake, fannantone blue 6G, Victoria blue lake, phthalocyanine blue, fast sky blue, and indanthrene blue. RS; BC, indide, and the like.
[0029]
Examples of the colorant for the magenta primary color slurry paint include red, permanent red 4R; F2R; F4R; F5R; FRL; FRLL; F4RH; FGR; BL; G, Brilliant First Scarlet, Brilliant First Scarlet G, Brilliant Carmine BS; 6B, Fast Scarlet VD, Vulcan Fast Rubin B, Vulcan Fast Pink G, Light Fast Red Toner B; R, Permanent Carmine FB; FBB, Pyrazolone Red, Lisor Red , Lake Red C; D, Ansosine B, Lisor Rubin GK, Pigment Scaret 3B, Bordeaux 5B; 10B, Toluidine Mar , Permanent Bordeaux F2R, Helio Bordeaux BL, Pont Maroon Light, Pont Maroon Media, Eosin Lake, Rhodamine Lake B; Y, Alizarin Lake, Thioindigo Red B, Thioindigo Maroon, PV Carmine; HF3C; HF4C; HF4B, HR Carmin, Watchung Red Mn, Chromophtal Red BR, Monolight Fast Red YS, PV Red HF2B, Paliogen Red 3910, and the like.
[0030]
Examples of the colorant for the white primary color slurry paint include titanium oxide, zinc white, lithopone, lead white, zinc sulfide, and antimony oxide.
Examples of the colorant for the black primary color slurry coating include carbon black, graphite, iron black, and aniline black.
[0031]
The amount of these colorants added to the resin is usually about 0.1 to 30% by mass based on the total solid content in the coating material.
[0032]
-Painting robot-
The coating robot used in each of the steps is not particularly limited and can be appropriately selected from known ones according to the purpose. For example, a coating gun for ejecting the coating and a manipulator for moving the coating gun And an operation means for performing an operation input are preferable (JP-A-2000-288432, JP-A-2000-279854, JP-A-11-169762, etc.). Thereby, a coating film or a plating layer can be uniformly formed on the entire surface of the substrate.
[0033]
Specifically, as shown in FIG. 2, an articulated teaching playback type coating robot 8 is provided for an object to be coated (substrate) 6. The painting robot 8 has a movable part operably connected to a support table, and the robot operation is controlled by a robot control unit 11. The robot control unit 11 is connected to the central control panel 5 from which operation control signals are supplied. A coating gun 7 is mounted on the tip of the movable part of the coating robot 8. The coating gun 7 controls the gun distance to the surface to be coated, the moving speed of the gun, the number of revolutions, the applied voltage, and the like according to the operation control signal.
[0034]
The paint gun 7 is supplied with atomizing air (or shaping air) from an air supply source having an air pressure sensor 4 according to a command from the air control panel 3, and receives a paint pump 9 according to a command from the paint pump control panel 10. Supplies paint. Air (not shown) for controlling the number of revolutions of the coating is also supplied by a command from the air control panel 3.
[0035]
-Other steps-
The method for producing a plated coated product of the present invention further includes, if necessary, a pretreatment step, a drying step, and a washing step in addition to the above steps.
[0036]
The pretreatment step is for degreased and washed the formed substrate to remove dirt on the surface and to facilitate formation of the undercoat layer. Note that degreasing and washing can be performed using a simple sprayer, and drying is performed by ion blow.
[0037]
The drying step is provided between the undercoat layer forming step and the electroless plating step, between the electroless plating step and the painting step, and the like. For 15 to 60 minutes.
[0038]
<Production line for plating coating products>
As shown in FIG. 3, the production line of the plating coated product includes an undercoat layer forming line 20 for forming an undercoat layer by spray coating on the entire surface of the substrate, and a coating type electroless plating on the entire surface of the undercoat layer. And an electroless plating line 30 for forming an electroless plating layer by spray coating, and a coating line 40 for forming a protective film and / or a toning coating film by spray coating on the electroless plating layer. The painting robot is arranged along the transport direction of each line, and the lines are connected.
According to the production line of the plated coating product of the present invention, an etching step which is inefficient compared to the conventional art is not required, all the steps can be continuously automated, and the production cost can be greatly reduced.
[0039]
Examples of the product obtained by the production line of the plated coating product of the present invention include a mobile phone, a PHS, a personal digital assistant, a digital camera, a television, a radio, a cassette deck, a casing selected from a personal computer and a personal computer peripheral device, and the like. The housings of these products have an unprecedented design, decoration, luxury, beauty, and design due to the combination of the metallic luster and the toning film on the surface. In addition, the plated product of the present invention has a very high conductivity because the plating layer on the entire surface is composed of a film made of pure metal, so that it is used as a conductive material having uniform electromagnetic wave shielding properties and a material for electromagnetic wave shielding. Can also be used.
[0040]
As mentioned above, although one Embodiment of the manufacturing method of the plating coating product and the manufacturing line of the plating coating product of this invention was described in detail, this invention is not limited to the said embodiment, The range which does not deviate from the summary of this invention is described. Can be changed in various ways.
[0041]
【Example】
Hereinafter, one embodiment of the present invention will be described more specifically with reference to the drawings. However, the present invention is not limited to the following embodiment.
[0042]
(Example 1, Comparative Example 1)
The casing (ABS resin) of the mobile phone shown in FIGS. 4 and 5 was subjected to plating using a plating line 50 as shown in FIG. In this case, the conditions for the detailed tanning and coating are as shown in Table 1 below. 4 and 5, 1 is a substrate, 13 is an undercoat layer (about 10 μm), 15 is a silver plating film (about 2 to 3 μm), 17 is a primer film, and 19 is a toning coating film. The primer film 17 and the toning film 19 can be omitted.
[0043]
[Table 1]

[0044]
Next, the coating film after the above-mentioned plating coating was applied to the housing of the mobile phone was evaluated for hardness, glossiness, gobang test, and shielding property by the following methods. Table 2 shows the results. As Comparative Example 1, a substrate subjected to a conventional bath-type electroless plating including an etching step was used.
[0045]
<Hardness>
The measurement was performed according to the JIS K5600 pencil method.
<Glossiness>
The 60 ° specular reflectance was measured.
<Goban eye test>
The measurement was performed in accordance with JIS K5400.
<Shielding property>
The shielding performance was measured by the dual chamber method.
[0046]
[Table 2]

From the results in Table 2, it can be seen that Example 1 has the same level of excellent shielding performance as compared with the conventional bath type of Comparative Example 1 although the number of steps is reduced and the processing time can be reduced. It is recognized that it has.
[0047]
【The invention's effect】
As described above, according to the method for producing a plated product and the production line for a plated product of the present invention, the conventional inefficient etching process is not required, and the entire process can be automated, thereby significantly reducing the production cost. Can be
Further, according to the present invention, even if products with different specifications are mixed, automation is easy, and even in a large amount, even in a small amount, a stable and uniform electromagnetic wave shielding characteristic and abundant appearance can be obtained in a mobile phone. It can be provided to a housing selected from a PHS, a portable information terminal, a digital camera, a television, a radio, a cassette deck, a personal computer, and a personal computer peripheral device.
[Brief description of the drawings]
FIG. 1 is an enlarged view of a double-headed gun portion of a painting robot used in an electroless plating process of the present invention.
FIG. 2 is a schematic view showing a painting robot according to one embodiment of the present invention.
FIG. 3 is a schematic diagram showing a production line of a plated coating product according to one embodiment of the present invention.
FIG. 4 is a partially omitted cross-sectional view of a casing of a mobile phone to which plating is applied in the embodiment.
FIG. 5 is a partially omitted cross-sectional view of a casing of a mobile phone to which plating is applied in the embodiment.
[Explanation of symbols]
1, 6 Base 3 Air control panel 4 Air pressure sensor 5 Central control panel 7 Painting gun 8 Painting robot 9 Paint pump 10 Painting pump control panel 11 Robot control unit 13 Undercoat layer 15 Silver plating film 17 Primer film 19 Toning coating film 20 Undercoat layer forming line 30 Electroless plating line 40 Painting line 50 Plating painting line

Claims (7)

After forming an electroless plating layer on the entire surface of the substrate by painting electroless plating, a toning paint is spray-coated on the electroless plating layer to impart uniform electromagnetic wave shielding properties and abundant appearance. Manufacturing method of plated coating products. An undercoat layer forming step for forming an undercoat layer by spray coating on the entire substrate,
An electroless plating step for forming an electroless plating layer by painting electroless plating on the entire surface of the undercoat layer,
A coating process for forming a protective film and / or a toned coating film by spray coating on the electroless plating layer,
Wherein each of the steps is performed by a coating robot under continuous automatic control. The method according to claim 2, wherein the undercoat material in the undercoat layer forming step is selected from a silicone acrylic resin, an acrylic urethane resin, an ultraviolet curable resin, an epoxy resin, a polyimide resin, and a polyurethane resin. The method for producing a plated product according to any one of claims 1 to 3, wherein the electroless plating is performed by a painting robot having a double-headed gun. The production of a plated product according to any one of claims 1 to 4, wherein the electroless plating layer is any one selected from silver, copper, nickel, palladium, gold, platinum, rhodium, tin, cobalt, lead and ruthenium. Method. The method for producing a plated product according to any one of claims 1 to 5, wherein the substrate is a casing selected from a mobile phone, a PHS, a personal digital assistant, a digital camera, a television, a radio, a cassette deck, a personal computer, and a personal computer peripheral device. . An undercoat layer forming line for forming an undercoat layer by spray coating on the entire surface of the substrate,
An electroless plating line for forming an electroless plating layer by painting electroless plating on the entire surface of the undercoat layer,
A coating line for forming a protective film and / or a toned coating film by spray coating on the electroless plating layer,
Wherein a coating robot is arranged along the transport direction of each of the lines and the lines are connected to each other.

Images