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Method for producing multicolor casing and multicolor casing produced according to same
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A shell and matrix technology, which is applied in the preparation of the shell and the field of the shell made by it, can solve the problems of low product yield, can not meet the colorful and single color of the product, and reduce the chemical treatment process , The surface is colorful and the effect of reducing the production cost
Inactive Publication Date: 2013-04-03
SHENZHEN FUTAIHONG PRECISION IND CO LTD
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Problems solved by technology
However, the conventional anodizing technology can only achieve a single color on the same product, which cannot meet the current market demand for rich and colorful products, resulting in restrictions on the application of anodizing technology. It is urgent to develop a product that can produce multiple colors on the same product. A variety of color patterns, personalized, colorful anodizing treatment technology to meet market demand
[0003] The existing multi-color anode manufacturing process is to carry out anodic oxidation first, then perform masking and stripping of the anodic film, and then perform two or more anodic oxidation and de-masking schemes. The products produced by this scheme have fractures in multiple color areas. Poor, and the process flow is relatively long, the chemical treatment process is more, and the pollution to the environment is greater; at the same time, the more colors anodized, the greater the process limitations, and the lower the product yield
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preparation example Construction
[0014] The preparation method of the casing of the present invention comprises the steps of:
[0015] (1) Provide aluminum or aluminum alloy substrate.
[0016] (2) Pretreatment of the aluminum or aluminum alloy substrate, the pretreatment includes degreasing / degreasing the aluminum or aluminum alloy substrate, three washings, pre-soaking, chemical polishing, three washings, stripping black film, three washings and other steps.
[0017] For degreasing / degreasing, a conventional aluminum material degreasing and degreasing agent is used, the concentration of the aluminum material degreasing and degreasing agent is 10ml / L, and the treatment temperature is 60°C.
[0018] Three washings, namely tap water, tap water and pure water.
[0019] A phosphoric acid solution with a mass percent concentration of 85% was used for pre-dipping, the pre-dipping temperature was room temperature, and the pre-dipping time was 10s.
[0020] The polishing solution used in chemical polishing contai...
Embodiment
[0032] An aluminum alloy substrate is provided and conventional pretreatments are performed on the aluminum alloy substrate.
[0033] Perform anodic oxidation on the pretreated aluminum alloy substrate, the anodic oxidation reaction solution contains sulfuric acid with a concentration of 190g / L, the concentration of aluminum ions in the reaction solution is less than 20g / L, the temperature of the reaction solution is 19°C, and the anodic oxidation voltage is 12V, the processing time is 30min.
[0034] The anodized aluminum alloy substrate was washed with water for three times and dried at a drying temperature of 60°C and a drying time of 0.5H.
[0035] The ink is formed on the anodized layer of the aluminum alloy substrate by screen printing and dried, wherein the ink is Aluprint 3R ink provided by Clariant Chemical Group Co., Ltd.; the drying temperature is 60-70°C, Drying time is 1h.
[0036] The area that does not form the ink layer on the surface of this anodized layer i...
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Abstract
The invention provides a method for producing a multicolor casing. The method comprises the steps that an aluminum or aluminum alloy matrix is provided; the aluminum or aluminum alloy matrix is subjected to anode oxidation treatment to form an anodic oxide layer; the surface of the anodic oxide layer is screen printed with ink and dried, so that part of the surface of the anodic oxide layer forms an ink layer; the areas of the surface of the anodic oxide layer without ink layer are dyed by using dye to form a dyed layer; and the areas of the ink layer and the dyed layer are subjected to hole encapsulation treatment. The invention further provides a multicolor casing produced according to the method.
Description
technical field [0001] The invention relates to a method for preparing a casing and a casing prepared by the method. Background technique [0002] Aluminum anodizing treatment technology is to anodize the surface of aluminum products to form anodic porous film layer, and then dye and seal the anode porous film layer to achieve surface protection and decoration effect. Anodizing treatment technology is widely used in the automotive industry, building materials, light industry, household appliances and other industrial fields, as well as the surface protection and decoration of 3C products, hardware and handicrafts. However, the conventional anodizing technology can only achieve a single color on the same product, which cannot meet the current market demand for rich and colorful products, resulting in restrictions on the application of anodizing technology. It is urgent to develop a product that can produce multiple colors on the same product. A variety of color patterns, per...
Claims
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