CN101003195A - High hardness optical thin film formed inside mold, and fabricating procedure - Google Patents
High hardness optical thin film formed inside mold, and fabricating procedure Download PDFInfo
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- CN101003195A CN101003195A CN 200610001638 CN200610001638A CN101003195A CN 101003195 A CN101003195 A CN 101003195A CN 200610001638 CN200610001638 CN 200610001638 CN 200610001638 A CN200610001638 A CN 200610001638A CN 101003195 A CN101003195 A CN 101003195A
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Abstract
A high-hardness optical film structure is disclosed, which can be used on the surface of a plastic shell for increasing its hardness and improving its scratch-resistant effect. It preparing process includes in mold lamination (IML), insert mould, hardening and transferring.
Description
Technical field:
The invention relates to a kind of plastic film, it refers to a kind of in-molded optical thin-film structure and processing procedure especially.
Background technology:
Along with popularizing of mobile phone and notebook computer, the common people also improve day by day for the requirement of the shell of the shell of mobile phone and notebook computer, except external form, color emulate the cool, than dazzling, the scratch resistant function of hardening is also very important.The scratch resistant function technology of hardening of known increase at present, except being used for electronic product such as notebook computer, mobile phone and personal digital assistant (Personal Digital Assistant, PDA) wait all ejection formations to have concurrently outside the plastic cement products of colorful shiny surface, also comprise purposes such as car trim panel and wheel rim shell.
As shown in Figure 1, it is the processing procedure of the plastic shell plated film of known techniques, wherein, execution in step S100 ' is in order to prepare a plastic rubber substrate, be to be selected from Merlon (PC), polypropylene (PP), acryl (PMMA), styrene methyl methacrylate copolymer (MS), acrylonitrile-butadiene-phenylethylene (ABS), polystyrene (PS), PETG (PET), wherein a kind of of group that bunching an aromatic plant metioned in ancient books (POM) and nylon (Nylon) etc. are formed, again among the execution in step S110 ', utilize ejection formation to produce a shell shape, execution in step S120 ' then, this shell is coated with various patterns or color with spraying method on the surface of this shell, during spraying must use masking coating repeatedly, to form various patterns or literal, and then execution in step S130 ' spraying one transparent hard coating (polishes or jaqan), then spread coated paint is prevented in execution in step S140 ' spraying one, and last execution in step S150 ' uses UV cured processing to make this anti-spread coated paint sclerosis.
Because above-mentioned molding mode, utilize spraying method to be coated with various patterns or color on the surface, must use masking coating or rubberized fabric repeatedly and cause the processing procedure time long and formality is complicated, and traditional painting process very easily produces and pollutes and cause a large amount of spittle and form paint waste, most important is that tradition lacquer class all contains plumbous class and other heavy metals, do not limit the use of instruction (Restriction of Hazardous Substance and meet hazardous substance, ROHS) environmental regulations, and spray last layer transparent hard coating again, not only cause paint waste, and easy phenomenon generation with in uneven thickness and surperficial orange peel, again because crooked angle is many, be easy to generate the situation of buildup, have atomizating phenomenon to produce when forming heat treatment or UV cured processing easily, or cause the back assembling to go up off size problem.
Therefore, the plastic workpiece dealer proposes a kind of in-mold decoration (InsertMold Decoration, IMD) forming technique, as shown in Figure 2, it is in-mold decoration (the Insert Mold Decoration of known techniques, IMD) processing procedure of forming technique, wherein, execution in step S200 ' is the optical thin film in order to provide a transparent cure process to cross, again among the execution in step S210 ', mode with printing treatment or transfer printing, with preformed pattern or color layer be printed on this optical thin film below, execution in step S220 ' sees through hot pressing or thermal vacuum moulding and forms required shape with this optical thin film is pre-then, and then execution in step S230 ' utilizes ejection formation that one plastic rubber substrate is penetrated below this pattern, and finishes a finished product.
See also Fig. 2 A, it is in-mold decoration (the Insert MoldDecoration of known techniques, IMD) optical thin-film structure of forming technique, wherein, comprise an optical thin film, one patterned layer is set below this optical thin film, and a plastic rubber substrate is set below this patterned layer, to finish this finished product.
Only look into, the in-mold decoration forming technology is to do the ejection formation action again after earlier this optical thin film being done cure process, but because the hardness of this optical thin film promotes, so in the process of subsequent heat treatment and ejection formation, this optical thin film is easily be full of cracks or produce fold at crooked knuckle place, and this optical thin film above have atomizating phenomenon.
Therefore, how the optical thin film processing procedure that a kind of novelty is utilized in-molded tool high rigidity to be proposed at the problems referred to above, in the time of not only can improving because of hot pressing or thermal vacuum, this optical thin film has be full of cracks, fold in the corner, or this optical thin film above the shortcoming of atomizing, the waste that can save coating are again arranged, and the thickness of this optical thin film evenly reaches the no orange peel phenomenon in surface, in its corner, be difficult for having buildup and cure process also not to have atomizating phenomenon, make and can solve the above problems.
Summary of the invention:
Main purpose of the present invention, be to provide a kind of optical thin-film structure and processing procedure that utilizes in-molded tool high rigidity, when hot pressing or thermal vacuum, because the hardness of an optical thin film does not promote as yet, thus do not have be full of cracks, fold, or atomizating phenomenon produces, therefore promote the production yield of product, and this optical thin film increases by a hardened layer, re-uses UV cured processing after formed product at last, can promote its case hardness.
Secondary objective of the present invention, be to provide a kind of optical thin-film structure and processing procedure that utilizes in-molded tool high rigidity, in pre-formation pattern or color is by printing treatment or transfer printing mode, with its be printed on this optical thin film below, through hot pressing or thermal vacuum this optical thin film is formed a required form and penetrates a plastic rubber substrate below this optical thin film again, reach pattern or color and be printed on this shell, need must not use masking coating or patch repeatedly and cause paint waste as traditional painting process.
Another object of the present invention, be to provide a kind of optical thin-film structure and processing procedure that utilizes in-molded tool high rigidity, in at finished product not before the demoulding, directly in mould, do external coating, multistage operations such as ejection formation, surface treatment and application are in the past integrated, reach province's energy, shorten procedure, reduce manufacturing cost.
Reach advantage in order to achieve the above object, the forming technique that the present invention is directed to in-mold decoration (IMD) is at the beginning an optical thin film being done cure process, so form optical thin film in the process of one required form in advance in hot pressing or thermal vacuum, because this hardened layer with exist this optical thin film above, so be easy to produce the phenomenon of be full of cracks, fold or atomizing, and reduce the production yield of product; On conventional art, behind this shell of ejection formation, utilize spraying method in surperficial coated pattern or color, masking coating or rubberized fabric be must utilization use repeatedly and processing procedure overlong time and formality complexity caused, and also need spray the last layer cured coating, not only cause paint waste, and there is the phenomenon of in uneven thickness and surperficial orange peel to produce easily, again because bent angle is many, be easy to generate the situation of buildup, when forming heat treatment or UV-cured processing, have atomizating phenomenon easily and produce, or cause assembling to go up off size problem.
Therefore, the present invention proposes a kind of optical thin-film structure and processing procedure that utilizes in-molded tool high rigidity, prior to top formation one hardened layer of unhardened this optical thin film still, below this optical thin film, stamp pattern or color layer again, utilize ejection formation that one plastic rubber substrate is penetrated below this pattern or color layer afterwards, at last its hardened layer is done UV cured processing, owing to just use UV cured hardened layer at last, so when hot pressing or thermal vacuum, do not have the phenomenon of be full of cracks, fold and atomizing, and promote the production yield of product; Moreover, be to see through printing treatment or transfer printing mode in forming pattern or color layer, with its be printed on this optical thin film below, must must not use masking coating repeatedly or paste sticky cloth and cause paint waste as traditional painting process; At last,, multistage operations such as ejection formation, surface treatment and application are in the past integrated, reach province's energy, shorten procedure, reduce manufacturing cost in not before the demoulding, directly in mould, doing external coating at finished product.
Description of drawings:
Fig. 1: it is the flow chart of processing procedure of the plastic shell plated film of known techniques;
Fig. 2: it is in-mold decoration (Insert MoldDecoration, IMD) flow chart of the processing procedure of forming technique of known techniques;
Fig. 2 A: it is in-mold decoration (Insert Mold Decoration, IMD) optical thin-film structure of forming technique of known techniques;
Fig. 3: it is the flow chart of the optical thin film processing procedure that utilizes in-molded tool high rigidity of a preferred embodiment of the present invention;
Fig. 3 A: it is the structural representation of formation one hardened layer of the present invention above an optical thin film;
Fig. 3 B: it is the structural representation that sees through heat treatment with pre-this optical thin film of formation of the present invention;
Fig. 3 C: it is the structural representation of ejaculation one plastic rubber substrate of the present invention below this optical thin film;
Fig. 4: it is the flow chart of the optical thin film processing procedure that utilizes in-molded tool high rigidity of another preferred embodiment of the present invention;
Fig. 4 A: it is the structural representation of this hardened layer of formation of the present invention above this optical thin film;
Fig. 4 B: it is the structural representation of formation one diaphragm of the present invention above this hardened layer;
Fig. 4 C: it is the structural representation of formation one pattern of the present invention below this optical thin film;
Fig. 4 D: it is the structural representation that takes off this diaphragm of the present invention;
Fig. 4 E: it will form the structural representation of this optical thin film for of the present invention in advance through heat treatment;
Fig. 4 F: it penetrates structural representation below a pattern for the ejection formation that utilizes of the present invention with this plastic rubber substrate.
The figure number explanation:
1 ' optical thin film, 2 ' patterned layer, 3 ' plastic rubber substrate
1 optical thin film, 2 hardened layers, 3 patterns
The shell of 4 plastic rubber substrates, 5 diaphragms, 6 mobile phones
The specific embodiment:
Now further understand and understanding for the auditor is had architectural feature of the present invention and the effect reached, sincerely help with preferred embodiment and cooperate detailed explanation, illustrate as after:
The in-mold decoration of known techniques (IMD) forming technique, it is when hot pressing or thermal vacuum, because of optical thin film overcure processing, so be easy to chap, the phenomenon of fold and atomizing, so the present invention provides a kind of optical thin-film structure and processing procedure that utilizes in-molded tool high rigidity, to improve the shortcoming of known techniques.
At first, see also Fig. 3, Fig. 3 A, Fig. 3 B and Fig. 3 C, it is the flow chart and the structural representation of optical thin film of the in-molded tool high rigidity of a preferred embodiment of the present invention.
A kind of optical thin-film structure and processing procedure that utilizes in-molded tool high rigidity of the present invention, its step includes:
In step S100, provide a still unhardened optical thin film: provide an optical thin film 1, be to be selected from wherein a kind of that polyethylene terephthalate (PET), Merlon (PC), cellulose triacetate film (TAC), acryl (PMMA), styrene methyl methacrylate copolymer (MS) and cyclic olefin polymer (COC) are formed group, it is an example that present embodiment selects transparent carbon acid esters (PC) film, its thickness is 250 millimeters (μ m), and hardness is 2B.
In step S110, form a hardened layer above an optical thin film: as shown in Figure 3A, utilize the roller coating method to form the hardened layer 2 of 15 millimeters of layer thicknesses (μ m) above this optical thin film 1, make the hardness that promotes this optical thin film, wherein, this hardened layer 2 is to utilize the coating of UV cured resin to form, and this UV cured resin is to be selected from wherein a kind of that acryl by a plurality of functional groups is the serial oligomerization compound of macromolecule oligomerization compound, polyurethane acryl, monomer and above-mentioned any combination.
In step S120, see through heat treatment with this optical thin film of pre-formation: shown in Fig. 3 B, utilize thermoforming way, after the shape with the shell 6 that to form this optical thin film 1 in advance be a mobile phone, move in the mould.
In step S130, utilize ejection formation that one plastic rubber substrate is penetrated in below this optical thin film: shown in Fig. 3 C, with a plastic rubber substrate 4, as be that acrylonitrile-butadiene-phenylethylene (ABS) moves in the jetting mold, and utilize simultaneously ejection formation with this plastic rubber substrate 4 fit in preformed this optical thin film 1 below, and finish the shell 6 of mobile phone.
In step S140, use ultraviolet with this hardened layer that hardens: behind the shell 6 of finishing mobile phone, use ultraviolet ray with this hardened layer 2 that hardens, its ultraviolet energy is 2500 energy/square centimeter (mj/cm
2), make the hardness of the shell 6 of mobile phone be promoted to H, reach hardening effect.
Above-mentioned is a preferred embodiment of the present invention, because the step of UV cured processing is a last step, therefore can avoid when hot pressing, and this optical thin film produces be full of cracks, fold or atomizating phenomenon.
Moreover, seeing also Fig. 4, Fig. 4 A, Fig. 4 B, Fig. 4 C, Fig. 4 D, Fig. 4 E and Fig. 4 F, it is the flow chart and the structural representation of the plastic film that utilizes in-molded tool high rigidity of another preferred embodiment of the present invention.
Another kind of the present invention utilizes the plastic film structure and the processing procedure of in-molded tool high rigidity, and its step includes:
In step S200, provide a still unhardened optical thin film: an optical thin film 1 is provided, and present embodiment is as being carbonic ester (PC) film, and its thickness is 250 millimeters (μ m), and hardness is 2B.
In step S210, form the surface of a hardened layer: shown in Fig. 4 A in an optical thin film, one optical thin film 1 is provided, it is an example that present embodiment selects transparent carbon acid esters (PC) film, its thickness is 250 millimeters (μ m), hardness is 2B, and it utilizes the roller coating method to form a hardened layer 2 of 15 millimeters of layer thicknesses (μ m) above this optical thin film 1.
In step S220, heat this hardened layer and present the sticking state of not being stained with: use 110 ℃ of heating 5 minutes, make its solvent residues that forms this hardened layer volatilization and make this hardened layer rapid draing become not to be stained with sticking state, shorten the processing procedure time.
In step S230, provide a diaphragm in above this hardened layer: shown in Fig. 4 B, provide a diaphragm 5 be affixed on this hardened layer 2 above, make it avoid this hardened layer 2 to be polluted.
In step S240, form a pattern in below this optical thin film: shown in Fig. 4 C, with form pattern 3 be printed in this optical thin film 1 below, or can form a color layers, make it reach variation attractive in appearance, and the formation method also can be selected the transfer printing mode.
In step S250, take off this diaphragm: shown in Fig. 4 D, this diaphragm above this hardened layer 2 is taken off.
In step S260, see through heat treatment with this optical thin film of pre-formation; Shown in Fig. 4 E, utilize the thermal vacuum molding mode, this optical thin film 1 is configured as the shape of shell 6 of a mobile phone after, move in the mould.
In step S270, utilize ejection formation that one plastic rubber substrate is penetrated in below this pattern: shown in Fig. 4 F, with a plastic rubber substrate 4, be to be selected from Merlon (PC), polypropylene (PP), acryl (PMMA), styrene methyl methacrylate copolymer (MS), acrylonitrile-butadiene-phenylethylene (ABS), polystyrene (PS), PETG (PET), bunching an aromatic plant metioned in ancient books (POM) and nylon (Nylon) form wherein a kind of of group, it is an example that present embodiment selects acrylonitrile-butadiene-phenylethylene (ABS), move in the jetting mold, and penetrate simultaneously this plastic rubber substrate 4 fit in the pattern that printed below, and finish shell 6 ejection formations of mobile phone and this optical thin film 1 of fitting simultaneously.
In step S280, use ultraviolet with this hardened layer that hardens: after shell 6 ejection formations of finishing mobile phone and this optical thin film 1 of fitting simultaneously, use ultraviolet ray with this hardened layer 2 of cure process, energy is 2500 energy/square centimeter (mj/cm
2), the hardness of the shell 6 of mobile phone is promoted to H at this moment, reaches hardening effect.
This embodiment increase heating step, stamp pattern and the step of this diaphragm of fitting, can shorten drying time, increase attractive in appearance and when avoiding the impression case or going up color, pollute this hardened layer, but do not influence the effect that is basically the same as those in the first embodiment.
The present invention is in the mode that forms this hardened layer, several coating methods are provided, it is for holding the coating of seam formula under the arm, quantitatively help the Pu to be delivered to an extrusion pressing type die head via precision masking liquid, when substrate moves to die head below, masking liquid contact substrate and film forming will be when substrate will leave the die head below, interrupt masking liquid and substrate contacts, to finish the mode of coating; Drench curtain coating cloth (Curtain Coating) and utilize gravity, fluid is poured on the object that moves horizontally, finished the mode of coating; Roller coating is to see through roller to rotate, and masking liquid is on average coated the surface of object, makes it select preferred mode, coat this optical thin film above.
In sum, the present invention is relevant a kind of optical thin-film structure and processing procedure that utilizes in-molded tool high rigidity, it changes the step of cure process, to avoid when hot pressing or the thermal vacuum, this optical thin film produces be full of cracks, the phenomenon of fold and atomizing, and yield is produced in lifting, moreover, pattern is with printing or the transfer printing mode is formed at shell, can save the waste of coating and the thickness of this optical thin film and evenly reach the no orange peel phenomenon in surface, in its corner, be difficult for having buildup and cure process also not to have albinism, last, because at finished product not before the demoulding, directly in mould, do external coating, in the past ejection formation, the operation of multistage such as surface treatment and application is integrated, and reaches province's energy, shorten procedure, reduce manufacturing cost.
The above person, it only is a preferred embodiment of the present invention, be not to be used for limiting scope of the invention process, the equalization of doing according to the described shape of the present patent application claim, structure, feature and spirit changes and modifies such as, all should be included in the claim of the present invention.
Claims (24)
1, a kind ofly utilizing the in-molded optical thin film with high rigidity, is a kind of plastic shell surface usefulness, can improve the hard plated film product of plastic shell processing procedure.
2, a kind ofly utilize the in-molded optical thin film processing procedure with high rigidity, its step comprises:
Still a unhardened optical thin film is provided;
Form a hardened layer above this optical thin film;
See through heat treatment with this optical thin film of pre-formation;
Utilize ejection formation that one plastic rubber substrate is penetrated below this optical thin film;
Use ultraviolet ray with this hardened layer that hardens.
3, the 2nd described optical thin film processing procedure of claim is characterized in that, after forming the step of a hardened layer above an optical thin film, more comprises:
Form a pattern below this optical thin film.
4, the 3rd described optical thin film processing procedure of claim is characterized in that, in forming the step of a pattern below this optical thin film, also can form a color layer below this optical thin film.
5, the 3rd described optical thin film processing procedure of claim is characterized in that, forms a method of patterning and can be printing or transfer printing.
6, the 3rd described optical thin film processing procedure of claim is characterized in that, before forming the step of a pattern below this optical thin film, more comprises:
Provide a diaphragm be affixed on this hardened layer above.
7, as the 6th described optical thin film processing procedure of claim, it is characterized in that, after forming the step of a pattern below this optical thin film, more comprise:
Take off this diaphragm.
8, as the 2nd described optical thin film processing procedure of claim, it is characterized in that, after forming the step of a hardened layer above an optical thin film, more comprise:
Heat this hardened layer and present the sticking state of not being stained with.
As the 8th described optical thin film processing procedure of claim, it is characterized in that 9, heating-up temperature is 70 ℃-200 ℃.
10, the 9th described optical thin film processing procedure of claim is characterized in that, the heating preferred temperature is 100 ℃-180 ℃.
11, the 8th described optical thin film processing procedure of claim, wherein, be 3-120 minute heat time heating time.
12, the 11st described optical thin film processing procedure of claim is characterized in that, heating the preferable time is 5-90 minute.
As the 2nd described optical thin film processing procedure of claim, it is characterized in that 13, the method that forms this hardened layer is slit coating, roller coating or drenches curtain.
14, the 2nd described optical thin film processing procedure of claim, wherein, when cure process, ultraviolet energy is 300-3000 energy/square centimeter (mj/cm
2).
15, as the 2nd described optical thin film processing procedure of claim, it is characterized in that heat-treating methods is hot pressing or thermal vacuum.
16, a kind of optical thin-film structure that utilizes in-molded tool high rigidity, it comprises:
One optical thin film;
One hardened layer is positioned at the top of this optical thin film;
One plastic rubber substrate is positioned at the below of this optical thin film;
It is characterized in that, be to utilize in-molded technology respectively this hardened layer and this plastic rubber substrate to be arranged at the top and the below of this optical thin film.
17, as the 16th described optical thin-film structure of claim, it is characterized in that the following patterned layer that is provided with of this optical thin film.
18, as the 16th described optical thin-film structure of claim, it is characterized in that the following of this optical thin film also can be provided with a color layer.
19, as the 16th described optical thin-film structure of claim, it is characterized in that the material of this optical thin film is to be selected from wherein a kind of that polyethylene terephthalate (PET), Merlon (PC), cellulose triacetate film (TAC), acryl (PMMA), styrene methyl methacrylate copolymer (MS) and cyclic olefin polymer (COC) are formed group.
20, as the 16th described optical thin-film structure of claim, it is characterized in that this plastic rubber substrate is to be selected from wherein a kind of that Merlon (PC), polypropylene (PP), acryl (PMMA), styrene methyl methacrylate copolymer (MS), acrylonitrile-butadiene-phenylethylene (ABS), polystyrene (PS), PETG (PET), bunching an aromatic plant metioned in ancient books (POM) and nylon (Nylon) are formed group.
As the 16th described optical thin-film structure of claim, it is characterized in that 21, the thickness of this optical thin film is 3-300 micron (μ m).
As the 16th described optical thin-film structure of claim, it is characterized in that 22, the thickness of this hardened layer is 3-50 micron (μ m).
23, as the 16th described optical thin-film structure of claim, it is characterized in that the material of this hardened layer comprises UV cured resin.
24, as the 23rd described optical thin-film structure of claim, it is characterized in that the acryl that this UV cured resin is selected from a plurality of functional groups is wherein a kind of of macromolecule oligomerization compound, polyurethane acryl series oligomerization compound, monomer and above-mentioned any combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100016382A CN100548672C (en) | 2006-01-18 | 2006-01-18 | Utilize the optical thin-film structure and the processing procedure of in-molded tool high rigidity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100016382A CN100548672C (en) | 2006-01-18 | 2006-01-18 | Utilize the optical thin-film structure and the processing procedure of in-molded tool high rigidity |
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| CN101003195A true CN101003195A (en) | 2007-07-25 |
| CN100548672C CN100548672C (en) | 2009-10-14 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955699A (en) * | 2010-10-20 | 2011-01-26 | 中国乐凯胶片集团公司 | Anti-ultraviolet transparent hard coating film for in-mold decoration (IMD) |
| CN101973149A (en) * | 2010-08-31 | 2011-02-16 | 中国乐凯胶片集团公司 | Method for reducing transparent hard coating film rainbow veins used for intramode decoration |
| CN101941353B (en) * | 2009-07-10 | 2013-01-02 | 颖台科技股份有限公司 | Manufacture method of light-cured composite film |
| CN101570066B (en) * | 2008-04-30 | 2013-09-25 | 海尔集团公司 | Double-sided and bi-color internal injection molding method and injection molding panel |
| CN107458058A (en) * | 2017-08-31 | 2017-12-12 | 维沃移动通信有限公司 | The preparation method and terminal device shell, terminal device of terminal device shell |
| CN110370761A (en) * | 2019-07-23 | 2019-10-25 | Oppo广东移动通信有限公司 | Decorative membrance and housing unit and electronic equipment |
-
2006
- 2006-01-18 CN CNB2006100016382A patent/CN100548672C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101570066B (en) * | 2008-04-30 | 2013-09-25 | 海尔集团公司 | Double-sided and bi-color internal injection molding method and injection molding panel |
| CN101941353B (en) * | 2009-07-10 | 2013-01-02 | 颖台科技股份有限公司 | Manufacture method of light-cured composite film |
| CN101973149A (en) * | 2010-08-31 | 2011-02-16 | 中国乐凯胶片集团公司 | Method for reducing transparent hard coating film rainbow veins used for intramode decoration |
| CN101955699A (en) * | 2010-10-20 | 2011-01-26 | 中国乐凯胶片集团公司 | Anti-ultraviolet transparent hard coating film for in-mold decoration (IMD) |
| CN101955699B (en) * | 2010-10-20 | 2012-09-05 | 中国乐凯胶片集团公司 | Anti-ultraviolet transparent hard coating film for in-mold decoration (IMD) |
| CN107458058A (en) * | 2017-08-31 | 2017-12-12 | 维沃移动通信有限公司 | The preparation method and terminal device shell, terminal device of terminal device shell |
| CN110370761A (en) * | 2019-07-23 | 2019-10-25 | Oppo广东移动通信有限公司 | Decorative membrance and housing unit and electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN100548672C (en) | 2009-10-14 |
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