CN105499104A - Surface treatment method for electronic equipment parts and electronic equipment parts - Google Patents
Surface treatment method for electronic equipment parts and electronic equipment parts Download PDFInfo
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- CN105499104A CN105499104A CN201510882380.0A CN201510882380A CN105499104A CN 105499104 A CN105499104 A CN 105499104A CN 201510882380 A CN201510882380 A CN 201510882380A CN 105499104 A CN105499104 A CN 105499104A
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- electronic equipment
- equipment parts
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- appearance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/067—Metallic effect
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- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a surface treatment method for electronic equipment parts and the electronic equipment parts. The surface treatment method for the electronic equipment parts comprises the following steps: carrying out electroplating treatment on appearance surfaces of the electronic equipment parts to form electroplating layers; spraying primer to the electroplating layers to form primer layers; and spraying colored paint to the primer layers to form colored paint layers. The surface treatment method comprises the steps of carrying out electroplating treatment on appearance surfaces of the electronic equipment parts to form electroplating layers, spraying primer to the electroplating layers to form primer layers, and finally spraying colored paint to the primer layers to form colored paint layers, so that the appearance surfaces of the electronic equipment parts have metallic luster, good color effect and good wear resistance, and therefore, the product grade is improved.
Description
Technical field
The embodiment of the present invention relates to field of surface treatment, particularly relates to a kind of surface treatment method and electronic equipment parts of electronic equipment parts.
Background technology
Existing a lot of product such as mobile phone, panel computer etc. often adopt plastic material as the parts such as shell or button; in order to improve product specification and make product seem better appearance; usually can by plating or NCVM (Nonconductivevacuummetalization; the non-conductive plating of vacuum) technique makes product surface present metal effect; although but can metal-like be had by the product casing surface of plating or NCVM processes, low in glossiness, surface color are single.
Summary of the invention
The invention provides a kind of surface treatment method and electronic equipment parts of electronic equipment parts, can not only metal-like be had to reach electronic equipment parts, and the object of multiple color can be had.
First aspect, embodiments provides a kind of surface treatment method of electronic equipment parts, comprises the following steps:
Electroplating processes is carried out to the appearance of electronic equipment parts, forms electrodeposited coating;
Spray-applied primer on described electrodeposited coating, forms prime coat;
Described prime coat sprays colored paint, forms colored paint layer.
Second aspect, the embodiment of the present invention additionally provides a kind of electronic equipment parts, comprises electrodeposited coating, priming paint and colored paint above the appearance covering described electronic equipment parts successively.
The third aspect, the embodiment of the present invention additionally provides a kind of electronic equipment, comprises electronic equipment parts according to claim 11.
The present invention is by first carrying out electroplating processes to the appearance of electronic equipment parts, form electrodeposited coating, then spray-applied primer is carried out, form prime coat, finally on described prime coat, spray colored paint, form colored paint layer, the appearance of electronic equipment parts is made not only to have metallic luster, and there is color effect, wearability is good, improves product specification.
Accompanying drawing explanation
The schematic flow sheet of the surface treatment method of a kind of electronic equipment parts that Fig. 1 provides for the embodiment of the present invention one;
The schematic flow sheet of the surface treatment method of a kind of electronic equipment parts that Fig. 2 provides for the embodiment of the present invention two.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not entire infrastructure.
Embodiment one
The schematic flow sheet of the surface treatment method of a kind of electronic equipment parts that Fig. 1 provides for the embodiment of the present invention one.As shown in Figure 1, the present embodiment is applicable to and carries out disposition to the surface of the parts of electronic equipment, specifically comprises following operation:
S110, electroplating processes is carried out to the appearance of electronic equipment parts, forms electrodeposited coating.
The appearance of electronic equipment parts can be made to have metal-like by this operation, improve feel and the visual experience of electronic equipment parts appearance.
S120, on described electrodeposited coating spray-applied primer, formed prime coat.
Described prime coat can increase the adhesive force between colored paint layer in subsequent operation and described electrodeposited coating, makes described colored paint layer be not easy to come off, and described priming paint has and certain fills up ability, and appearance can be made to become more level and smooth.
S130, on described prime coat, spray colored paint, form colored paint layer.
Concrete, can be spray different colored paints, the colored paint layer of different colours can be formed, thus the appearance of described electronic equipment parts can have the effect of different colours.Make the appearance of described electronic equipment parts can the coloured effect of tool by this operation, match with the metal-like that electrodeposited coating is formed, make electronic equipment have metal-like and colored gloss simultaneously, improve the class of electronic equipment.
The present invention is by first carrying out electroplating processes to the appearance of electronic equipment parts, form electrodeposited coating, then spray-applied primer is carried out, form prime coat, finally on described prime coat, spray colored paint, form colored paint layer, the appearance of electronic equipment parts is made not only to have metallic luster, and there is color effect, wearability is good, improves product specification.
Optionally, priming paint described in above-described embodiment can be baking-type paint, also can be self-drying type paint, when described priming paint is self-drying type paint, can reduce processing step and the production cost of the appearance process of electronic equipment parts.
Further, described colored paint is the UV paint comprising look essence.
Wherein, look essence can be the various color such as red, green, blue and white.Optionally, the color of described electronic equipment parts appearance is different with the color of look essence in colored paint and allocation ratio.Exemplary, when the color of described colored paint is golden, described colored paint comprises gloss oil, mute oil, yellow look essence and red look essence, and the mass ratio of described gloss oil, mute oil, yellow look essence and red look essence is 3000:900:1:2.
Optionally, after described prime coat sprays colored paint, also comprise: baking process and photocuring process are carried out successively to described electronic equipment parts.
Further, described to described electronic equipment parts carry out successively baking process and photocuring process time, the temperature of described baking is 30-70 DEG C, and the time of described baking is 5-15 minute; Described photocuring process adopts and utilizes ultraviolet light to irradiate the colored paint in described electronic equipment parts appearance.Concrete, described in described UV-irradiation, the energy of electronic equipment parts can be 800-1200J/cm
2, be radiated at ultraviolet light in described electronic equipment parts appearance when scanning, linear velocity can be 5 ms/min.
It should be noted that the material of the parts of electronic equipment described in above-described embodiment is any one in plastic cement, magnesium alloy and aluminium alloy.Exemplary, described plastic cement can be the mixture of Merlon and acrylonitrile-butadiene-styrene copolymer, also can be acrylonitrile-butadiene-styrene (ABS) plastics; Described magnesium alloy can be various model magnesium alloys; Described aluminium alloy can be one be aluminium, two be aluminium, five be aluminium, six be aluminium, seven is the section bars such as aluminium and various die casting aluminium.
Embodiment two
The schematic flow sheet of the surface treatment method of a kind of electronic equipment parts that Fig. 2 provides for the embodiment of the present invention two.As shown in Figure 2, the present embodiment is optimized on the basis of above-described embodiment, and the surface treatment method of a kind of electronic equipment parts that the embodiment of the present invention provides, mainly comprises following operation:
S210, carry out electro-coppering and electronickelling process successively in the appearance of described electronic equipment parts, form copper electroplating layer and electroless nickel layer successively.
The adhesive force of described copper electroplating layer is better, so can prevent electroless nickel layer from coming off from the appearance of described electronic equipment parts; And the wearability of nickel dam is good, anti-corrosive properties and resistance to acids and bases good, the effect of the appearance protecting described electronic equipment parts can be played.
S220, on described electrodeposited coating spray-applied primer, formed prime coat;
S230, on described prime coat, spray colored paint, form colored paint layer.
The present embodiment is by carrying out electro-coppering and electronickelling process successively in the appearance of described electronic equipment parts, form copper electroplating layer and electroless nickel layer successively, then prime coat and colored paint layer is formed successively, make the appearance of electronic equipment parts while having colored gloss and metal-like, wearability and anti-corrosive properties improve, and make the retention time of the colored gloss of the appearance of electronic equipment parts and metal-like more lasting.
Optionally, in above-described embodiment, the thickness of described copper electroplating layer can be 0.5-2 micron, and the thickness of described electroless nickel layer can be 2-5 micron.
Optionally, the material of the parts of electronic equipment described in above-described embodiment is any one in plastic cement, magnesium alloy and aluminium alloy.
Below successively to when the material of described electronic equipment parts is plastic cement, magnesium alloy and aluminium alloy, be introduced in the appearance electro-coppering of described electronic equipment parts and the technique of electronickelling.
When the material of described electronic equipment parts is plastic cement, the processing step of electro-coppering and electronickelling is as described below successively:
First carry out electro-coppering process, concrete steps are: described electronic equipment parts are placed in the first electroplate liquid and add that DC current is electroplated.Wherein, described first electroplate liquid is the aqueous solution of cupric pyrophosphate, potassium pyrophosphate, ammoniacal liquor and sodium potassium tartrate tetrahydrate.Wherein, the concentration of described cupric pyrophosphate is 60-70g/L, and the concentration of potassium pyrophosphate is 280-320g/L, and the concentration of ammoniacal liquor is 2-3ml/L, and sodium potassium tartrate tetrahydrate is 5-20g/L.The Ph of described first electroplate liquid is 8.2-9.2, and electro-coppering treatment temperature is 40-50 DEG C, and the electro-coppering processing time is 2-8 minute, and electro-coppering process current density is: 0.5-1A/dm
2.
Then carry out electronickelling process, concrete steps are: be soaked in the second electroplate liquid by described electronic equipment parts, adopt DC current at described electronic equipment component surface electroless nickel layer; Described second electroplate liquid is nickelous sulfate, nickel chloride and boron aqueous acid, described in wherein said second electroplate liquid, the concentration of nickelous sulfate is 250-300g/L, the concentration of described nickel chloride is 50-60g/L, the concentration of described boric acid is 50-60mg/L, principal component is half light nickel additive of saccharin sodium is 0.5-2g/L, the Ph of the second electroplate liquid is 3.8-4.8, temperature is 50-60 DEG C, and electroplating time is 2-8 minute, and current density is: 2-5A/dm
2.
Preferably, described carry out electro-coppering process before, also comprise:
1, the U-284 solution first utilizing concentration to be 40-60g/L soaks electronic equipment parts, oil removal treatment is carried out to described electronic equipment component surface, for the surface of clean electronic equipment parts, solution temperature: 60-65 DEG C, soak time: 3-6 divides;
2, utilize the organic solution for expanding of 350-370ml/L, described electronic equipment parts are soaked, solution temperature 60-65 DEG C, soak time 10-120 second.Utilize the similar principle that mixes that the surface of electronic equipment parts is softened, be convenient to later use coarsening solution to electronic equipment component surface etch more even.
3, coarsening solution is utilized to soak described electronic equipment parts, described coarsening solution is the chromic acid of 400-450g/L and the mixed solution of 380-420g/L sulfuric acid, during immersion, solution temperature is 70-72 DEG C, soak time is 8-10 minute, this operation can make electronic equipment component surface coarse, there is frosted finish effect, strengthen the adhesion between electronic equipment component surface and coating.
Preferably, when described electronic equipment parts are the polyhedrons such as button, can be only to wherein simultaneously carrying out frosted process, also can be that frosted process is carried out to multiple face, thus obtain part face has frosted finish effect, and the effect that other faces are smooth.
4, working concentration is the mass fraction of 40ml/L is that the hydrochloric acid of 37% and the aqueous solution of alligatoring reducing agent soak described electronic equipment parts, during immersion, solution temperature is 45-55 DEG C, soak time is 2-4 minute, this operation can make electronic equipment component surface with trace quantity electric charge, strengthen the heavy palladium effect of operation backward, the hexavalent chromium in the coarsening solution speckled with is made to be reduced to trivalent chromic ion, prevent from reacting the solution composition in subsequent operation and Cr VI, affect the effect of described solution.
5, working concentration to be the mass fraction of 150-300ml/L be 37% salt aqueous acid described electronic equipment parts are soaked, during immersion, solution temperature is 20-30 DEG C, soak time is 30-60 second, the surface of electronic equipment parts is kept to speckle with concentrated hydrochloric acid, in order to avoid the activating solution hydrolysis used in subsequent operation was lost efficacy.
6, in order to make surface attachment one deck catalytically-active metals of electronic equipment parts, so that subsequent plating operations, utilize activating solution to soak described electronic equipment parts, during immersion, solution temperature is 30-40 DEG C, and soak time is 30-60 second.Be the mass fraction of 150-300ml/L containing concentration in wherein said activating solution be the hydrochloric acid of 37%, in solution, the concentration of palladium ion is 50-70mg/L, the concentration of divalent tin ion is 3-6g/L.
7, the colloid palladium that electronic equipment component surface adsorbs in activating solution does not have catalytic activity, is because by divalent tin ion (Sn around it
2+) be wrapped in, need by utilizing solution sol solution to soak described electronic equipment parts, the Bivalent Tin that dispergation dissolves around palladium makes it exposed and has catalytic activity, and next step plating is carried out.Separate the hydrochloric acid containing the oxalic acid of 25-45g/L and 37% of 50-80ml/L in sol solution, during immersion, solution temperature is 50 DEG C, and soak time is 1-4 minute.
8, utilize the nickelous sulfate containing 20-30g/L, 20-30g/L sodium hypophosphite, 20-35g/L ammonium chloride, 10-15g/L natrium citricum, the solution of 10-30g/L amion acetic acid and 2-5mg/L thiocarbamide soaks electronic equipment parts, also containing ammoniacal liquor in described solution, for the Ph value of solution is adjusted to 4.5-5.5, during immersion, solution temperature is 40-50 DEG C, soak time is 2-8 minute, this operation is by method autocatalysis on electronic equipment parts of electronation, the uniform nickel of deposit thickness, the electronic equipment parts of plastic cement material are conducted electricity, thus can electroplate, then electro-coppering and electronickelling operation is carried out.
When the material of described electronic equipment parts is magnesium alloy, the processing step of electro-coppering and electronickelling is as described below:
1, utilize the oil solution that removes containing 450-550ml/LCG-1570 to soak described electronic equipment parts, solution temperature 55-65 DEG C, soak time 5-10 divides.
2, the pickle of CG-1751 containing 150-250ml/L is utilized to soak described electronic equipment parts, solution temperature 25-35 DEG C, soak time 30-90 second.
3, utilize the alkali wash water of the CG-1752 containing 180-200ml/L to soak described electronic equipment parts, solution temperature 40-45 DEG C, soak time 2-5 divides.
4, the acid activation immersion of CG-1753 containing 180-200ml/L is utilized to steep described electronic equipment parts, solution temperature 25-35 DEG C, soak time 20-60 second.
5, the alkali activating solution of CG-1754 containing 450-550ml/L is utilized to soak described electronic equipment parts, solution temperature 40-45 DEG C, soak time 45-75 second.
6, utilize the solution containing 48-52ml/LCG-1755A, 180-220ml/LCG-1575B and 48-52ml/LCG-1575C to soak described electronic equipment parts, the Ph of described solution is 8.2-8.6, temperature 78-82 DEG C, and soak time 3-10 divides.
7, utilize the solution containing 48-52ml/LCG-1755A, 120-180ml/LCG-1575B and 50-60ml/LCG-1575C to soak described electronic equipment parts, the Ph of described solution is 4.8-5.1, temperature 78-82 DEG C, and soak time 3-10 divides.
8, electro-coppering process is carried out, specifically utilize, containing the electroplating solution of 60-70g/L cupric pyrophosphate, 280-320g/L potassium pyrophosphate, 2-3ml/L ammoniacal liquor and 5-20g/L sodium potassium tartrate tetrahydrate, electro-coppering carried out to described electronic equipment parts, the Ph of described electroplating solution is 8.2-9.2, temperature is 40-50 DEG C, plating time added electric current current density be 0.5-1A/dm
2, electroplating time is that 2-8 divides.
9, electronickelling process is carried out, specifically utilize the electroplating solution containing 250-300g/L nickelous sulfate, 50-60g/L nickel chloride, 50-60g/L boric acid and the 0.5-2g/L principal component half light nickel additive that is saccharin sodium to carry out electro-coppering to described electronic equipment parts, the Ph of described electroplating solution be 3.8-4.8, temperature is 50-60 DEG C, plating time added electric current current density be 2-5A/dm
2, electroplating time is that 2-8 divides.
When the material of described electronic equipment parts is aluminium alloy, the processing step of electro-coppering and electronickelling is as described below:
1, the oil solution that removes utilizing the model of 40-50g/L to be AK-8 soaks electronic equipment parts, solution temperature 60 DEG C, and soak time 5 minutes, to remove the greasy dirt of electronic equipment component surface, increases adhesive force.
2, utilize the NaOH solution of 40-50g/L to soak described electronic equipment parts, solution temperature 50 DEG C, soak time 40 seconds, so that the oxide-film of electronic equipment component surface described in fast purification, increase etch alligatoring effect, promote adhesive force.
3, the salpeter solution of 300-500ml/L is utilized to soak described electronic equipment parts, solution temperature 50 DEG C, soak time 30-60 second, effectively by the etch of described electronic equipment component surface, scale removal and polishing, to obtain flat surface.
4, utilize the Zn-405 of 500ml/L to sink zinc solution to soak described electronic equipment parts, solution temperature 30 DEG C, soak time 60 seconds, so that on active electronic equipment component surface, and displaces that one deck is meagre evenly, adhesion is good and thickness is the zinc layers of 0.2 micron.
5, utilize the salpeter solution of 300-500ml/L to soak described electronic equipment parts, solution temperature 25 DEG C, soak time 60 seconds, the residual particulates of heavy zinc rear surface effectively to be removed totally, make follow-up next step obtain fine and closely woven rete.
6, the Zn-405 solution of 500ml/L is utilized to soak described electronic equipment parts, solution temperature 30 DEG C, soak time 1 minute, to go out at surface replacement the zinc layers that one deck is meagre evenly, the good thickness of adhesion is 0.2 micron.
7, be immersed in by electronic equipment parts in the solution containing 25g/L nickelous sulfate, 25g/L sodium hypophosphite, 40g/L natrium citricum and 5g/L activating additive, the Ph of solution is 4.6, temperature is 22-35 DEG C, soak time is that 2-6 divides.For depositing at electronic equipment component surface that one deck is thin, even, chemical property active and the good thickness of adhesion is 1.5 microns of pre-nickel platings, is follow-up electronickelling bottoming.
8, electronic equipment parts are immersed in the solution containing 60-70g/L cupric pyrophosphate, 280-320g/L potassium pyrophosphate, 2-3ml/L ammoniacal liquor and 5-20g/L sodium potassium tartrate tetrahydrate, the Ph of solution is 8.2-9.2, temperature is 40-50 DEG C, soak time is that 2-8 divides, and during plating, the current density of added electric current is 0.5-1A/dm
2.
9, being immersed in by electronic equipment parts containing 250-300g/L nickelous sulfate, 50-60g/L nickel chloride, 50-60g/L boric acid and 0.5-2g/L principal component is in the solution of half light nickel additive of saccharin sodium, the Ph of solution is 3.8-4.8, temperature is 50-60 DEG C, soak time is that 2-8 divides, and during plating, the current density of added electric current is 2-5A/dm
2.
It should be noted that, in above-mentioned steps each step carry out complete after all with water, residual solution is cleaned up, prevent the solution used to subsequent step from polluting and then causing harmful effect to electroplating effect.
Exemplary, electronic equipment parts described in above-mentioned any embodiment can be button or the battery cover of the mobile terminal such as mobile phone, panel computer.
Embodiment three
Present embodiments provide a kind of electronic equipment parts, the electronic equipment parts that this embodiment provides comprise electrodeposited coating, priming paint and colored paint in above-described embodiment above arbitrary described appearance covering described electronic equipment parts successively, and have the beneficial effect after the process of the parts of electronic equipment described in above-described embodiment appearance.
Embodiment four
Present embodiments provide a kind of electronic equipment, the electronic equipment that this embodiment provides comprises the electronic equipment parts described in above-described embodiment and other are for supporting the parts that described electronic equipment normally works.Owing to including described electronic equipment parts, so have whole feature of described electronic equipment parts and the beneficial effect of these features.Described electronic equipment can refer to mobile phone, panel computer etc.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (12)
1. a surface treatment method for electronic equipment parts, is characterized in that, comprises the following steps:
Electroplating processes is carried out to the appearance of electronic equipment parts, forms electrodeposited coating;
Spray-applied primer on described electrodeposited coating, forms prime coat;
Described prime coat sprays colored paint, forms colored paint layer.
2. method according to claim 1, is characterized in that, the described appearance to electronic equipment parts carries out electroplating processes, forms electrodeposited coating, comprising:
Carry out electro-coppering and electronickelling process successively in the appearance of described electronic equipment parts, form copper electroplating layer and electroless nickel layer successively.
3. method according to claim 2, is characterized in that, the thickness of described copper electroplating layer is 0.5-2 micron, and the thickness of described electroless nickel layer is 2-5 micron.
4. method according to claim 1, is characterized in that, described priming paint is self-drying type paint.
5. method according to claim 4, is characterized in that, described colored paint is the UV paint comprising look essence.
6. method according to claim 5, it is characterized in that, the color of described colored paint is golden, wherein, described colored paint comprises gloss oil, mute oil, yellow look essence and red look essence, and the mass ratio of described gloss oil, mute oil, yellow look essence and red look essence is 3000:900:1:2.
7. method according to claim 5, is characterized in that, after described prime coat sprays colored paint, also comprises:
Baking process and photocuring process are carried out successively to described electronic equipment parts.
8. method according to claim 7, is characterized in that, the temperature of described baking is 30-70 DEG C, and the time of described baking is 5-15 minute; Described photocuring process adopts and utilizes ultraviolet light to irradiate the colored paint in described electronic equipment parts appearance.
9. the method according to any one of claim 1-8, is characterized in that, the material of described electronic equipment parts is any one in plastic cement, magnesium alloy and aluminium alloy.
10. the method according to any one of claim 1-8, is characterized in that, described electronic equipment parts are mobile terminal key or battery cover.
11. 1 kinds of electronic equipment parts, is characterized in that, comprise electrodeposited coating, priming paint and colored paint above the appearance covering described electronic equipment parts successively.
12. 1 kinds of electronic equipments, is characterized in that, comprise electronic equipment parts according to claim 11.
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| CN201510882380.0A CN105499104A (en) | 2015-12-03 | 2015-12-03 | Surface treatment method for electronic equipment parts and electronic equipment parts |
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| CN201510882380.0A CN105499104A (en) | 2015-12-03 | 2015-12-03 | Surface treatment method for electronic equipment parts and electronic equipment parts |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106048681A (en) * | 2016-07-14 | 2016-10-26 | 广东欧珀移动通信有限公司 | Electronic part, manufacturing method of electronic part and mobile terminal |
| CN106222706A (en) * | 2016-07-25 | 2016-12-14 | 广东欧珀移动通信有限公司 | Protective coating, rifle color water depositing process, button and electronic equipment |
| CN108672252A (en) * | 2018-07-17 | 2018-10-19 | 淮北百壹领域建筑科技有限公司 | A kind of surface treatment method of architectural shape |
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| CN103357559A (en) * | 2013-07-22 | 2013-10-23 | 格林精密部件（惠州）有限公司 | Spraying process for laser-direct-structuring (LDS) antenna on outside surface of mobile phone plastic shell |
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| JPS62121678A (en) * | 1985-11-19 | 1987-06-02 | Arakawa Shatai Kogyo Kk | Method for applying metallic color embossed pattern |
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| CN103357559A (en) * | 2013-07-22 | 2013-10-23 | 格林精密部件（惠州）有限公司 | Spraying process for laser-direct-structuring (LDS) antenna on outside surface of mobile phone plastic shell |
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| CN106048681A (en) * | 2016-07-14 | 2016-10-26 | 广东欧珀移动通信有限公司 | Electronic part, manufacturing method of electronic part and mobile terminal |
| CN106222706A (en) * | 2016-07-25 | 2016-12-14 | 广东欧珀移动通信有限公司 | Protective coating, rifle color water depositing process, button and electronic equipment |
| CN108672252A (en) * | 2018-07-17 | 2018-10-19 | 淮北百壹领域建筑科技有限公司 | A kind of surface treatment method of architectural shape |
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Application publication date: 20160420 |