CN103057200A - Appearance layer, and method for increasing adhesion force of same on workpiece - Google Patents
Appearance layer, and method for increasing adhesion force of same on workpiece Download PDFInfo
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- CN103057200A CN103057200A CN2011103235999A CN201110323599A CN103057200A CN 103057200 A CN103057200 A CN 103057200A CN 2011103235999 A CN2011103235999 A CN 2011103235999A CN 201110323599 A CN201110323599 A CN 201110323599A CN 103057200 A CN103057200 A CN 103057200A
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Abstract
The invention provides an appearance layer, and a method for increasing the adhesion force of the appearance layer on a workpiece. The appearance layer is sputtered on the surface of the workpiece and has a good adhesion force. The workpiece is a metal base material or a plastic base material. The appearance layer comprises a matching layer and a color decoration layer, wherein the matching layer is made of one of titanium, chromium or titanium alloy; the color decoration layer is made of one of stainless steel, chromium, nickel-chromium alloy and any combination of the stainless steel, the chromium and the nickel-chromium alloy, wherein the matching layer is formed between the workpiece and the color decoration layer so that good adhesion force is formed between the whole appearance layer and the workpiece. The method provided by the invention comprises the following steps of: providing the workpiece; forming a matching layer on the surface of the workpiece by means of sputtering, wherein the matching layer is made of one of titanium, chromium and titanium alloy; forming a color decoration layer on the matching layer by means of sputtering, wherein the color decoration layer is made of one of the stainless steel, the chromium and the nickel-chromium alloy.
Description
Technical field
The present invention relates to a kind of sputter outward appearance layer in the method for electronic product casing, particularly a kind of outward appearance layer that promotes is in the method for metal base adhesive force.
Background technology
Along with scientific and technological progress, many portable electronic equipments more and more are tending towards universal such as digital camera, personal digital assistant (PDA), mobile phone etc.Present existing electronic product casing typically uses engineering plastics, still, the shell that plastic material is made, texture is relatively poor when vision or touching.And work as electronic installation, particularly digital circuit is when running, the electromagnetism wave energy that produces freely penetrates the plastics that do not add screen layer, disturb the normal operation of other device, therefore need add the metal level that anti electromagnetic wave disturbs, make simultaneously the shell of electronic installation have good visual sense of beauty and texture.
In addition, in the industry cycle also have and adopt alloying metal as the shell (such as aluminium alloy, magnesium alloy, stainless steel etc.) of portable electronic equipment, the texture when promoting touching, and can prevent electromagnetic wave again.Because electronic product casing, or be installed in part on the electronic product, as: mobile phone key.Shape is comparatively complicated, and directly processing is difficult for, and therefore, the normal mode of metal ejection formation (MIM) that adopts prepares at present.
Metal ejection formation is with after metal dust and the high polymer binder Hybrid Heating, in the technique through ejection formation, degreasing, sintering, can prepare the workpiece of precision size and tool complicated shape.But the product of metal ejection formation, its outward appearance are cloudy surface, do not have any metallic luster, seem comparatively coarse.Therefore, need to pass through again machine glazed finish, make surface roughness at least less than 10 μ m.
In addition, also need at surperficial degree last layer outward appearance layer (or decorative layer), come the texture on lifting workpieces surface.Vacuum splashing and plating can be used as the coating film treatment of metal, plastics, glass or other material surface, has low cost, high-compactness, high yield and meets the advantages such as environmental protection demand.Yet, jet-plating metallization directly be contacted with plastic basis material or the metal base for preparing in the metal ejection formation mode on adhesive force not good, can't reach the requirements of industry.
Therefore, how to promote the adhesive force of outward appearance layer or metal control layer on metal or plastic bottom material, be the problem of institute of the present invention wish solution.
Summary of the invention
Because above-mentioned problem the object of the present invention is to provide a kind of outward appearance layer, realize the raising of outward appearance layer adhesive force by increasing matching layer.
The present invention also aims to provide a kind of outward appearance layer that promotes in the method for the adhesive force of workpiece.
For achieving the above object, the present invention at first provides a kind of outward appearance layer, and sputter is in a surface of the work, has good adhesive force, described workpiece is a metal base or a plastic basis material, and this outward appearance layer comprises: a matching layer is selected from a kind of in titanium, chromium or the titanium alloy etc.; And a color decorative layer, be selected from a kind of in stainless steel, chromium, nichrome and any combination thereof etc., wherein, matching layer is formed between workpiece and the color decorative layer, makes to have good adhesive force between outward appearance layer integral body and the workpiece.
According to concrete technical scheme of the present invention, preferably, in above-mentioned outward appearance layer, the thickness of matching layer is approximately 10 to 150nm.
According to concrete technical scheme of the present invention, preferably, in above-mentioned outward appearance layer, when workpiece was metal base, it was to be selected from a kind of in the group that stainless steel, chromium, nichrome and any combination thereof form.More preferably, when workpiece and color decorative layer were stainless steel, matching layer was selected from titanium or titanium alloy.
According to concrete technical scheme of the present invention, preferably, in above-mentioned outward appearance layer, when workpiece was plastic basis material, it was to be selected from a kind of among ABS, ABS/PC (combination of ABS and PC) or the PC (Merlon) etc.
According to concrete technical scheme of the present invention, preferably, this outward appearance layer optionally more comprises a decorative layer, is formed on the described color decorative layer, to modify the appearance color of whole workpiece.More preferably, the thickness of above-mentioned color decorative layer is approximately 50 to 5000nm, and the thickness of decorative layer is 5 to 60nm, and the color decorative layer uses different materials from decorative layer.
The present invention also provides a kind of outward appearance layer that promotes in the method for the adhesive force of workpiece,
Comprise: a workpiece is provided; Form a matching layer in surface of the work with sputtering way, wherein, matching layer is selected from a kind of in titanium, chromium or the titanium alloy etc.; And forming a color decorative layer on matching layer with sputtering way, the color decorative layer is selected from a kind of in stainless steel, chromium, nichrome and any combination thereof.
According to concrete technical scheme of the present invention, preferably, in said method, workpiece is a metal base, and standby with the metal ejection formation legal system.
According to concrete technical scheme of the present invention, preferably, in said method, the material of workpiece is selected from a kind of in stainless steel, chromium, the nichrome etc.
According to concrete technical scheme of the present invention, preferably, in said method, before the sputter matching layer, more comprise workpiece is soaked in one first organic solvent and clean, the first organic solvent is selected from acetone, the active acid agent, the group that inhibitor and any combination thereof form, wherein, described active acid agent is comprised of several slight caustic acid, preferably include hydrochloric acid, nitrous acid, acetic acid, Microamounts of Hydrogen fluoric acid (HF), described inhibitor comprises the interface activating agent, can be selected from anion interface activating agent, a kind of in the group that cation interfacial active agent and neutral type interface activating agent form; Then, remove the first organic solvent post-drying residue on this workpiece with one second organic solvent, the second organic solvent can be selected from a kind of in the group that n-hexane, pure water, isopropyl alcohol and any combination thereof form; And carry out an electric sizing process, surface of the work is carried out activation processing.Make the adhesive force of outward appearance layer better.
No matter method provided by the invention is all very easy on Processes and apparatus.Although many one deck matching layers can make the adhesive force of outward appearance layer significantly promote between color decorative layer and workpiece.
Description of drawings
Fig. 1 is the generalized section that the outward appearance layer of the embodiment of the invention is plated on workpiece;
Fig. 2 is the generalized section that the outward appearance layer of another embodiment of the present invention is plated on workpiece;
Fig. 3 is that the lifting outward appearance layer of the embodiment of the invention is in the method flow diagram of the adhesive force of workpiece.
The primary clustering symbol description:
10: workpiece 110: matching layer
111: color decorative layer 11: the outward appearance layer
112: decorative layer S200-S230: process step
The specific embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, hereinafter comply with outward appearance layer of the present invention and promote it in the method for the adhesive force of workpiece, especially exemplified by preferred embodiment, and cooperate appended correlative type, be described in detail below, wherein identical assembly will be illustrated with identical element numbers.
In surface of the work, and its adhesive force can satisfy the industry demand to outward appearance layer of the present invention by sputter-deposited.Described workpiece material can be plastic basis material or metal base.Aforesaid workpiece is actually the shell of current common electronic product, such as: mobile phone, pen electricity, personal digital assistant (PDA) etc. also can be employed precision components on the electronic product, such as: button or switch etc.In the present embodiment, if workpiece is plastic basis material, can be selected from a kind of among ABS, ABS/PC or the PC etc.If workpiece is metal, can be selected from a kind of in the group that stainless steel, chromium, nichrome and any combination thereof form.
In the embodiment of the invention, described workpiece is to adopt stainless steel, and prepares with metal ejection formation method (MIM), namely with after powder of stainless steel and the high polymer binder Hybrid Heating, forms through the step such as injection molding, degreasing, sintering.
Please refer to Fig. 1, for the embodiment of the invention is used for sputter in the schematic diagram of the outward appearance layer of surface of the work.Outward appearance layer 11 in a workpiece 10 surfaces, is comprised a matching layer 110 and a color decorative layer 111 by sputter.Matching layer 110 is formed between workpiece 10 and the color decorative layer 111, makes between outward appearance layer 11 and the workpiece 10 to have good adhesive force.
Matching layer 110 can be selected from a kind of in titanium, chromium or the titanium alloy etc.Color decorative layer 111 can be selected from a kind of in stainless steel, chromium, nichrome and any combination thereof.In the embodiment of the invention, be as color decorative layer 111 with stainless steel.Wherein, the thickness proportion of color decorative layer and matching layer according to the conditions such as shape, size or surface topography of workpiece, need have different thickness allotments, just can make the adhesive force between outward appearance layer and the workpiece reach best.In one embodiment, matching layer 110 thickness are approximately 10 to 150nm, and the thickness of color decorative layer 111 is approximately 50 to 500nm.
In the embodiment of the invention, workpiece 10 is selected stainless steels, and simultaneously with stainless steel as color decorative layer 111.But directly the sputter stainless steel is when surface of the work, and how to promote adhesive force is the difficult problem that industry runs into always.Therefore, in most preferred embodiment of the present invention, be to adopt titanium or titanium alloy as aforesaid matching layer 110, to promote the overall appearance layer in the adhesive force of stainless steel work-piece.In embodiments of the present invention, matching layer thickness is approximately 100 to 150nm, can have best adhesive force.
Please refer to Fig. 2, for the schematic diagram of another embodiment of outward appearance layer of the present invention, in Fig. 2, outward appearance layer 11 more comprises a decorative layer 112, by modulation color decorative layer 111, and the thickness of decorative layer 112, can be according to color and the texture of customized demand adjustment workpiece 10 outward appearances.Wherein, color decorative layer 111 is to use different materials from decorative layer 112.
In the present embodiment, first by color decorative layer 111, change the color of workpiece 10 (ground) outward appearance.Color decorative layer 111 thickness are thicker, and scope is to 5000nm from 50.By with decorative layer 112, be formed on the color decorative layer 111 again, cause the sense organ of removing or increasing polarisation, produce unique reflection appearance with interference of light principle, modify the workpiece appearance color.Wherein, the thickness of decorative layer 112 is thin than color decorative layer 111, is about 5 to 60nm.
Such as: if only with stainless steel as color decorative layer 111, the color of workpiece outward appearance is that silver color is partially yellow, if during as color decorative layer 111, then be that silver color is partially white with chromium (Cr) only.In one embodiment of the invention, if color decorative layer 111 is stainless steel, thickness is 100nm, when selecting chromium as decorative layer 112, along with the variation of thickness, can gradually transfer to originally inclined to one side yellow partially white.
The present invention also provides a kind of outward appearance layer that promotes in the method for the adhesive force of workpiece.Please refer to Fig. 3, be the flow chart of the embodiment of the invention.
Please refer to step S200, a workpiece at first is provided, as previously mentioned, the workpiece material can be a metal base or a plastic basis material.In the embodiment of the invention, be for the prepared workpiece of metal ejection formation method, and passed through the mechanical polishing step.
Please refer to step S205, workpiece of the present invention can be soaked in workpiece in one first organic solvent first before forming the outward appearance layer, and washed with the ultrasonic shake, purpose be will be attached on the surface of the work solid-state oil stain and throw the soil dissolving, with further lifting outward appearance layer in the adhesive force of workpiece.Described the first organic solvent can be selected from the group that acetone, active acid agent, inhibitor and any combination thereof form, wherein, described active acid agent is comprised of several slight caustic acid, comprise hydrochloric acid, nitrous acid, acetic acid, Microamounts of Hydrogen fluoric acid (HF), described inhibitor comprises the interface activating agent, can be selected from a kind of in the group that anion interface activating agent, cation interfacial active agent and neutral type interface activating agent form.
Then, with one second organic solvent, the workpiece after the shake of wiping process ultrasonic is washed with employed solvent in the removal previous step, and is put into the drying oven oven dry, such as step S210.Described the second organic solvent can be selected from a kind of in the group that n-hexane, pure water, isopropyl alcohol and any combination thereof form.
In preferred embodiment of the present invention, also comprise and carry out an electric sizing process, metallic substrate surface is carried out activation processing, such as step S215.Can produce the surface functionalities upgrading through the workpiece after the activation processing, and the surface is subjected to the bombardment of electricity slurry to produce trickle alligatoring, thereby the adhesive force of follow-up outward appearance layer is promoted.When making the electricity consumption slurry carry out activation processing, in the present embodiment, the power that adopts is 100W approximately, and the gas of selecting to pass into can be selected oxygen (O
2), nitrogen (N
2) or argon gas (Ar) etc. in a kind of.
Please refer to step S220, form a matching layer in surface of the work with sputtering way, wherein, matching layer is selected from a kind of in titanium, chromium or the titanium alloy etc.At last, such as step S225, form a color decorative layer on matching layer with sputtering way, the color decorative layer is selected from a kind of in stainless steel, chromium or nichrome and any combination thereof.Matching layer is compared to follow-up color decorative layer, and is larger for the adhesive force of metal base, and overall appearance layer adhesive force is increased.
In addition, also can select again a decorative layer sputter on the color decorative layer, such as step S230, to adjust the color of outward appearance layer.
The present inventor also carries out experiment test with an embodiment wherein, and the mode of test is to test with hundred lattice 3M adhesive tapes, and observes the situation that the outward appearance layer comes off in workpiece and judge its adhesive force.Among the tested embodiment and control group, workpiece is metal base, and is stainless steel, and the two has identical sputter pre-treatment step, and equally with stainless steel as the color decorative layer.But as matching layer, control group does not then have matching layer to embodiment with titanium or titanium alloy.
Experimental result is found, uses titanium or titanium alloy as the workpiece of matching layer, its outward appearance layer adhere to yield up to 100%, the yield that adheres to of control group then only has 84%.Prove the employed matching layer of outward appearance layer of the present invention, really can the adhesive force of Effective Raise on workpiece.
In addition, the inventor also finds, if when with spraying method stainless steel being plated on workpiece, adhering to yield then only has 0-30%.As seen adopt method of the present invention, first workpiece is carried out surface treatment, again sputter matching layer and color decorative layer can significantly promote the adhesive force of overall appearance layer.
Though the present invention illustrates as above with preferred embodiments, so it is not to limit the present invention's spirit only to terminate in above-described embodiment with the invention entity.The those skilled in the art of technical field under all are when understanding easily and utilize other assembly or mode to produce identical effect.Be with, the modification of doing within not breaking away from spirit of the present invention and category all should be included within the claim protection domain.
Claims (10)
1. outward appearance layer when the surface of the work, is had good adhesive force by sputter, and described workpiece is a metal base or a plastic basis material, and this outward appearance layer comprises:
One matching layer is selected from a kind of in titanium, chromium or the titanium alloy; And
One color decorative layer, this color decorative layer is selected from a kind of in stainless steel, chromium, nichrome and any combination thereof, wherein, described matching layer is formed between described workpiece and the described color decorative layer, makes between this outward appearance layer and the described workpiece to have good adhesive force.
2. outward appearance layer as claimed in claim 1, wherein, the thickness of described matching layer is 10 to 150nm.
3. outward appearance layer as claimed in claim 1, wherein, when described workpiece was metal base, it was to be selected from a kind of in the group that stainless steel, chromium, nichrome and any combination thereof form.
4. outward appearance layer as claimed in claim 3, wherein, when described workpiece and described color decorative layer were stainless steel, described matching layer was selected from titanium or titanium alloy.
5. outward appearance layer as claimed in claim 1, wherein, when described workpiece was plastic basis material, it was to be selected from a kind of among ABS, ABS/PC or the PC.
6. outward appearance layer as claimed in claim 1, this outward appearance layer more comprises a decorative layer, be formed on the described color decorative layer, wherein, the thickness of described color decorative layer is 50 to 5000nm, the thickness of described decorative layer is 5 to 60nm, and described color decorative layer uses different materials from described decorative layer.
7. one kind promotes the outward appearance layer in the method for the adhesive force of workpiece, comprising:
One workpiece is provided;
Form a matching layer in described surface of the work with sputtering way, wherein, described matching layer is selected from a kind of in titanium, chromium, the titanium alloy; And
Form a color decorative layer on described matching layer with sputtering way, described color decorative layer is selected from a kind of in stainless steel, chromium, the nichrome.
8. method as claimed in claim 7, wherein, described workpiece is a metal base, and standby with the metal ejection formation legal system.
9. method as claimed in claim 8 forms before the described matching layer, more comprises the following steps:
Described workpiece is soaked in one first organic solvent cleans, described the first organic solvent is selected from the group that acetone, active acid agent, inhibitor and any combination thereof form, wherein, described active acid agent is comprised of several slight caustic acid, preferably include hydrochloric acid, nitrous acid, acetic acid, Microamounts of Hydrogen fluoric acid, described inhibitor forms and comprises the interface activating agent, is preferably selected from a kind of in the group that anion interface activating agent, cation interfacial active agent and neutral type interface activating agent form;
Remove described the first organic solvent post-drying residue on the described workpiece with one second organic solvent, described the second organic solvent is selected from a kind of in the group that n-hexane, pure water, isopropyl alcohol and any combination thereof form; And
Carry out an electric sizing process, this surface of the work is carried out activation processing.
10. method as claimed in claim 7, wherein, described workpiece is selected from a kind of in stainless steel, chromium, the nichrome.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103235999A CN103057200A (en) | 2011-10-21 | 2011-10-21 | Appearance layer, and method for increasing adhesion force of same on workpiece |
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| CN2011103235999A CN103057200A (en) | 2011-10-21 | 2011-10-21 | Appearance layer, and method for increasing adhesion force of same on workpiece |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0878856A (en) * | 1994-08-31 | 1996-03-22 | Matsushita Electric Ind Co Ltd | Manufacture of electronic component |
| CN101110276A (en) * | 2006-07-21 | 2008-01-23 | 鸿富锦精密工业（深圳）有限公司 | Protecting film structure |
| US20110151209A1 (en) * | 2008-08-28 | 2011-06-23 | Huating Li | Shell for electronic device, method of forming the shell and electronic device having the same |
| CN102137558A (en) * | 2010-01-27 | 2011-07-27 | 鸿富锦精密工业（深圳）有限公司 | Colored shell and surface processing method thereof |
-
2011
- 2011-10-21 CN CN2011103235999A patent/CN103057200A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0878856A (en) * | 1994-08-31 | 1996-03-22 | Matsushita Electric Ind Co Ltd | Manufacture of electronic component |
| CN101110276A (en) * | 2006-07-21 | 2008-01-23 | 鸿富锦精密工业（深圳）有限公司 | Protecting film structure |
| US20110151209A1 (en) * | 2008-08-28 | 2011-06-23 | Huating Li | Shell for electronic device, method of forming the shell and electronic device having the same |
| CN102137558A (en) * | 2010-01-27 | 2011-07-27 | 鸿富锦精密工业（深圳）有限公司 | Colored shell and surface processing method thereof |
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Application publication date: 20130424 |