TWI553164B - Surface treatment of aluminum products - Google Patents

Surface treatment of aluminum products Download PDF

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Publication number
TWI553164B
TWI553164B TW102128091A TW102128091A TWI553164B TW I553164 B TWI553164 B TW I553164B TW 102128091 A TW102128091 A TW 102128091A TW 102128091 A TW102128091 A TW 102128091A TW I553164 B TWI553164 B TW I553164B
Authority
TW
Taiwan
Prior art keywords
aluminum
layer
oxide film
treatment
film layer
Prior art date
Application number
TW102128091A
Other languages
Chinese (zh)
Other versions
TW201506206A (en
Inventor
Yi Chung Su
ming-zhao Xie
Original Assignee
Taiwan Green Point Entpr Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taiwan Green Point Entpr Co filed Critical Taiwan Green Point Entpr Co
Priority to TW102128091A priority Critical patent/TWI553164B/en
Publication of TW201506206A publication Critical patent/TW201506206A/en
Application granted granted Critical
Publication of TWI553164B publication Critical patent/TWI553164B/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/04Anodisation of aluminium or alloys based thereon
    • C25D11/12Anodising more than once, e.g. in different baths
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/022Anodisation on selected surface areas
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/04Anodisation of aluminium or alloys based thereon
    • C25D11/18After-treatment, e.g. pore-sealing

Description

Surface treatment method for aluminum products
The present invention relates to a method of dyeing a metal article, and more particularly to a method of surface treatment of an aluminum article.
Today's electronic products are popular in the use of metal casings. The advantages of using metal materials are electromagnetic shielding, good heat dissipation, good rigidity, impact resistance, and environmentally friendly properties that can be recycled, especially aluminum or aluminum alloy metal products. Lighter effects are achieved compared to other metals.
General manufacturers will create various patterns or texts on the surface of aluminum products to enhance the value of the product. The above common production method is to first anodize the surface of the aluminum product to form a porous oxide film layer, and then print the desired pattern on the porous oxide film layer, and then apply a protective layer to perform the porous oxide film layer. Sealing treatment. However, when the pattern is printed on the porous oxide film layer, it is easy to cause the ink to be smudged due to the capillary phenomenon, and the edge of the pattern outline is unclear, or if the ink is printed, the contoured edge of the pattern is formed. The distribution of the inkjet dots is rather uneven, causing the edges of the outline of the pattern to appear unsharp.
Accordingly, it is an object of the present invention to provide a surface treatment method for an aluminum article that sharpens the outline of the printed pattern.
Therefore, the surface treatment method of the aluminum article of the present invention is made of an aluminum-based material, and the surface treatment method comprises the steps of: forming a patterned barrier layer on the surface of the aluminum article, wherein the aluminum article is Made of aluminum-based materials.
The aluminum article is anodized to form a first oxide film layer having a plurality of voids on the surface of the aluminum article not covered by the patterned barrier layer.
A dyeing process is performed on the aluminum article, and a pattern layer is formed on the first oxide film layer.
The pores of the first oxide layer region are sealed to form a protective layer.
The patterned barrier layer is removed.
Preferably, the dyeing process is a printing process.
Preferably, the surface treatment method further comprises the step of: anodizing the aluminum article to form a second oxide film layer having a plurality of holes on a surface outside the first oxide film layer of the aluminum article.
The second oxide film layer is subjected to a dyeing process to form a dyed layer.
The pores of the second oxide film layer are sealed to form a protective layer.
Preferably, the dyeing process performed on the second oxide film layer is a printing process.
The surface treatment method of the aluminum article of the invention by the patterning resistance The precise pattern contour edge of the barrier layer is defined to avoid blurring of the edge of the pattern contour due to the blooming of the ink due to the capillary phenomenon of the hole, or to avoid the inkjet point forming the edge of the pattern contour when performing inkjet printing. A situation in which the distribution is uneven is generated to form a colorful pattern layer having sharp contoured edges.
1‧‧‧Aluminum products
11‧‧‧ surface
110‧‧‧ hole
111‧‧‧First oxide layer
112‧‧‧Second oxide film
2‧‧‧patterned barrier
3‧‧‧pattern layer
4‧‧‧Protective layer
5‧‧‧Dyeing layer
The other features and advantages of the present invention will be apparent from the detailed description of the preferred embodiments of the accompanying drawings in which: FIG. A patterned barrier layer is formed on the surface of an aluminum article; FIG. 2 is a schematic cross-sectional view showing a first oxide film layer formed by the preferred embodiment of the present invention; and FIG. 3 is a schematic cross-sectional view showing the comparison of the present invention. FIG. 4 is a schematic cross-sectional view showing a protective layer formed by the preferred embodiment of the present invention; FIG. 5 is a cross-sectional view showing the preferred embodiment of the present invention. FIG. 6 is a schematic cross-sectional view showing a second oxide film layer formed by the preferred embodiment of the present invention; FIG. 7 is a cross-sectional view showing a dyed layer formed by the preferred embodiment of the present invention; And Figure 8 is a schematic cross-sectional view showing the preferred embodiment of the present invention. a protective layer.
A preferred embodiment of the surface treatment method for the aluminum article of the present invention, as shown in FIG. 1, the aluminum product 1 is pure aluminum or aluminum using alloying elements such as magnesium, barium, copper, manganese, iron, zinc, tin, and the like. An outer casing of an electronic product made of an alloy. The surface treatment method comprises the following steps: Referring to FIG. 1, a patterned barrier layer 2 is formed on the surface 11 of the aluminum article 1. In detail, the patterned barrier layer 2 is formed by applying an ultraviolet light-sensitive ink to the surface of the aluminum article 1, and then masking a portion of the ultraviolet light-sensitive ink with a mask to perform ultraviolet light exposure, and the ultraviolet light-sensitive ink is used. The intermolecular bond is interrupted by ultraviolet light, and then the patterned barrier layer 2 is formed by removing the molecularly-blocked ultraviolet light-sensitive ink with a developing solvent. Since the conditions of the yellow light lithography process are well known to those skilled in the art, they will not be described again here.
Referring to FIG. 2, the aluminum article 1 is anodized to form a first oxide film layer 111 having a plurality of holes 110 on the surface 11 of the aluminum article 1 not covered by the patterned barrier layer 2.
Referring to FIG. 3, a dyeing process is performed on the aluminum article 1, and a pattern layer 3 is formed on the first oxide film layer 111. In detail, the dyeing process of the aluminum article 1 includes lithography, screen printing, water transfer, thermal transfer, and ink jetting. When the dyeing process is performed, the contoured edge of the patterned layer 3 is precisely defined by the patterned barrier layer 2, and the printing ink can be blocked from blooming outward, or in the inkjet printing, as a spray forming the contour edge. Selection of ink dots to form a colorful patterned layer with sharp contoured edges 3.
Referring to FIG. 4, the hole 110 of the first oxide film layer 111 is subjected to a sealing process to form a protective layer 4. In detail, the sealing treatment is to form a protective layer 4 to block the colored first oxide film layer 111, so as to protect the ink in the hole 110 from being scraped or caused by external force, and to improve corrosion resistance and resistance. Performance in terms of grinding and light resistance. The sealing treatment includes metal salt sealing treatment, organic material sealing treatment or coating sealing treatment, for example, nickel acetate sealing at a high temperature of 80 to 100 degrees.
Referring to FIG. 5, the patterned barrier layer 2 is removed, which is also removed by using a developing solvent, and will not be described again, since the patterned barrier layer 2 has defined the outline of the pattern layer 3, so that the final colorful color is formed. The pattern layer 3 will have a sharp silhouette edge.
Preferably, the surface treatment method further comprises the following steps: Referring to FIG. 6, the aluminum article 1 is subjected to a second anodization to form a majority on the surface 11 outside the first oxide film layer 111 of the aluminum article 1. The second oxide film layer 112 of the hole 110.
Referring to FIG. 7, the aluminum article 1 is subjected to a dyeing process, and the second oxide film layer 112 is dyed to form a dyed layer 5. In detail, the dyeing process is to uniformly fill the holes 110 of the second oxide film layer 112 with the ink particles of the single color to form a dyed layer 5 having a full color. Preferably, the dyeing process performed on the second oxide film layer 112 can also be a printing process.
Referring to FIG. 8, the hole 110 of the second oxide film layer 112 is subjected to a sealing process to form a protective layer 4. In detail, the sealing treatment is to form a protective layer 4 to block the colored second oxide film layer 112 to protect the holes. In 110, the ink is not subjected to external force and has a scratching or blooming condition, and improves the performance of corrosion resistance, abrasion resistance, and light resistance. The sealing treatment includes metal salt sealing treatment, organic material sealing treatment or coating sealing treatment, for example, nickel acetate sealing at a high temperature of 80 to 100 degrees.
It is worth mentioning that, as shown in FIG. 1, the aluminum product 1 is subjected to a pre-treatment action of cleaning the surface, polishing, and degreasing treatment before performing the surface treatment method. The cleaning surface is a chemical or physical cleaning of the aluminum article 1 which involves cleaning the surface 11 of the aluminum article 1 with a neutral or alkaline chemical solution, for example, with acetone. The physical processing described above involves the use of an ultrasonic cleaning process. Polishing and polishing is such that the surface 11 of the aluminum article 1 has a smoother surface. The above polishing treatment can generally employ a chemical polishing method or an electrochemical polishing method. The chemical polishing method removes the material by chemical reaction of the polishing liquid and the surface 11 of the aluminum article 1. Electrochemical polishing is the removal of surface material by the action of electrical energy and chemical energy, mainly by electrolysis to remove the material of the surface 11 of the aluminum article 1. Degreasing treatment The aluminum product 1 is immersed in an acidic degreaser (for example, sulfuric acid or hydrofluoric acid) to remove oil stains or scales on the surface 11 of the aluminum product 1. Of course, it is also possible to use an alkaline degreasing agent such as sodium citrate, sodium phosphate or sodium carbonate.
In summary, the surface treatment method of the aluminum article of the present invention has the effect of defining the edge of the precise pattern contour in the dyeing process by the patterned barrier layer 2, thereby avoiding the halo caused by the capillary phenomenon of the ink during printing. It is unclear whether the edge of the pattern outline is blurred, or when the inkjet printing is performed, the ink jet dot which avoids forming the edge of the pattern contour is unevenly distributed to form a pattern layer 3 having sharp contour edges, except In addition, the surface treatment method of the present invention can not only form a pattern layer 3 on the surface of the aluminum product 1, but also form a single color dye layer 5 according to design requirements, so as to increase the variability of the design, so the invention can be achieved. The purpose.
The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.
1‧‧‧Aluminum products
110‧‧‧ hole
111‧‧‧First oxide layer
112‧‧‧Second oxide film
3‧‧‧pattern layer
4‧‧‧Protective layer
5‧‧‧Dyeing layer

Claims (4)

  1. A surface treatment method for an aluminum product, comprising the steps of: providing an aluminum product having a smooth surface after being polished, the aluminum product being made of an aluminum-based material; forming a patterned barrier on the surface of the aluminum product a layer; the aluminum article is anodized to form a first oxide film layer having a plurality of holes on a surface of the aluminum article not covered by the patterned barrier layer; and dyeing the aluminum article for the first process Forming a pattern layer on the oxide film layer; sealing the hole of the first oxide film layer; and removing the patterned barrier layer.
  2. The surface treatment method for an aluminum article according to claim 1, further comprising the step of: anodizing the aluminum article to form a second oxide having a plurality of pores on a surface outside the first oxide film layer of the aluminum article a film layer; the aluminum product is subjected to a dyeing process, and the second oxide film layer is dyed; and the pores of the second oxide film layer are sealed.
  3. The surface treatment method for an aluminum article according to claim 2, wherein the dyeing process performed on the second oxide film layer is a printing process.
  4. The surface treatment method for an aluminum article according to claim 1, wherein the dyeing process is a printing process.
TW102128091A 2013-08-06 2013-08-06 Surface treatment of aluminum products TWI553164B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW102128091A TWI553164B (en) 2013-08-06 2013-08-06 Surface treatment of aluminum products

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW102128091A TWI553164B (en) 2013-08-06 2013-08-06 Surface treatment of aluminum products
CN201410383810.XA CN104342735B (en) 2013-08-06 2014-08-05 The surface treatment method of aluminum products

Publications (2)

Publication Number Publication Date
TW201506206A TW201506206A (en) 2015-02-16
TWI553164B true TWI553164B (en) 2016-10-11

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106435687A (en) * 2016-09-22 2017-02-22 宇龙计算机通信科技(深圳)有限公司 Electronic device shell, processing method thereof and electronic device
CN107779928A (en) * 2017-10-30 2018-03-09 珠海市魅族科技有限公司 Mobile phone bottom and its processing method and mobile phone
CN107901647B (en) * 2017-11-10 2019-05-24 辽宁忠旺集团有限公司 A kind of aluminium sheet caloric transfer printing technology

Citations (2)

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Publication number Priority date Publication date Assignee Title
CN101403117A (en) * 2008-11-07 2009-04-08 长沙湘计海盾科技有限公司 Composite oxidation technology for aluminum or aluminum alloy product surface
CN102634831A (en) * 2012-05-04 2012-08-15 东莞市华轩幕墙材料有限公司 Anodized aluminum plate and preparation technique thereof

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JP2004060044A (en) * 2002-07-30 2004-02-26 Koyo Kinzoku Boshoku:Kk Surface treatment method for aluminum and aluminum material
CN101457380A (en) * 2007-12-14 2009-06-17 深圳富泰宏精密工业有限公司 Metallic surface anode treatment method
CN101722785A (en) * 2008-10-22 2010-06-09 绿点高新科技股份有限公司 Patterned transparent substrate and making method thereof
CN103173830A (en) * 2011-12-24 2013-06-26 汤锦练 Surface treatment method of aluminum product

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101403117A (en) * 2008-11-07 2009-04-08 长沙湘计海盾科技有限公司 Composite oxidation technology for aluminum or aluminum alloy product surface
CN102634831A (en) * 2012-05-04 2012-08-15 东莞市华轩幕墙材料有限公司 Anodized aluminum plate and preparation technique thereof

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CN104342735A (en) 2015-02-11
TW201506206A (en) 2015-02-16
CN104342735B (en) 2018-01-26

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