Paint spraying method for plastic shell

A plastic shell and topcoat technology, which is applied to the device for coating liquid on the surface, ion implantation plating, coating, etc., can solve the problems of surface cracks, surface cracking and falling off, affecting the appearance, etc., and achieve low production costs , It is not easy to crack and fall off, and the effect of high product stability

Inactive Publication Date: 2018-05-08
陈来运
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mobile phones are the most commonly used electronic products. The existing plastic casings of mobile phones are painted by ordinary techniques, giving consumers a low-end feeling.
At the same time, the simple painting process is easy to form cracks on the surface, causing problems such as surface cracking and falling off that affect the appearance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The plastic shell made of PC material is cleaned, destaticized, and preheated sequentially; the preheating temperature is 40°C;

[0036] Then select the solute as C9 petroleum resin, the solvent is cyclohexane, and the solution with a mass concentration of 5% is used as the treatment agent; m / min, the film thickness of the treatment agent is 7μm; then bake, the oven temperature is 55°C;

[0037] Spray a layer of color paint on the surface of the treatment agent, the spraying line speed is 6 m / min, and the film thickness of the color paint is 9 μm; then bake, the oven temperature is 55 ° C;

[0038] Spray a layer of UV paint on the surface of the color paint, the spraying line speed is 6 m / min, the film thickness of the UV paint is 30 μm, and the UV energy is 550mj / cm 2 ; Then bake, the oven temperature is 75 ℃;

[0039] On the surface of the UV paint, use an optical coating machine to coat a coating layer of titanium, silicon, and dioxide with a thickness of 0.6 μm; ...

Embodiment 2

[0043] The plastic shell made of PC material is subjected to grinding treatment, cleaning treatment, static electricity removal treatment, and preheating treatment in sequence; the grinding thickness is 5 μm, and the preheating temperature is 50°C;

[0044] Then select the solute as C9 petroleum resin, the solvent is ethylcyclohexane, and the solution with a mass concentration of 3% is used as the treatment agent; 7 m / min, the film thickness of the treatment agent is 5 μm; then bake, the oven temperature is 55 ° C;

[0045] Spray a layer of color paint on the surface of the treatment agent, the spraying line speed is 7 m / min, and the film thickness of the color paint is 7 μm; then bake, the oven temperature is 55 ° C;

[0046] Spray a layer of transparent and colorless UV paint on the surface of the paint, the spraying line speed is 7 m / min, the film thickness of the UV paint is 25 μm, and the UV energy is 450mj / cm 2 ; Then bake, the oven temperature is 75 ℃;

[0047] On the...

Embodiment 3

[0051] The plastic shell made of PC material is subjected to grinding treatment, cleaning treatment, static electricity removal treatment, and preheating treatment in sequence; the grinding thickness is 10 μm, and the preheating temperature is 45°C;

[0052] Then select the solute as C9 petroleum resin, the solvent is cyclohexane, and the solution with a mass concentration of 4% is used as the treatment agent; m / min, the film thickness of the treatment agent is 6μm; then bake, the oven temperature is 55°C;

[0053] Spray a layer of color paint on the surface of the treatment agent, the spraying line speed is 6 m / min, and the film thickness of the color paint is 8 μm; then bake, the oven temperature is 55 ° C;

[0054] Spray a layer of transparent and colorless UV paint on the surface of the paint, the spraying line speed is 7 m / min, the film thickness of the UV paint is 28 μm, and the UV energy is 500mj / cm2 ; Then bake, the oven temperature is 75 ℃;

[0055] On the surface of...

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Abstract

The invention discloses a paint spraying method for a plastic shell. The paint spraying method for the plastic shell comprises the following steps that cleaning treatment, electrostatic removing treatment and preheating treatment are sequentially conducted on the plastic shell; a layer of treatment agent is sprayed on the plastic shell subjected to preheating treatment; a layer of colored paint issprayed on the surface of the treatment agent; a layer of UV paint is sprayed on the surface of the colored paint; the surface of the UV paint is coated with a titanium, silicon and dioxide coating layer with the thickness being 0.6 [mu]m through an optical coating machine; a layer of UV intermediate paint is sprayed on the surface of the coating layer; and a layer of UV surface paint is sprayedon the UV intermediate paint. By using the provided paint spraying method for the plastic shell, the plastic shell can present the ceramic luster and texture and is not prone to being cracked and disengaged.

Description

technical field [0001] The invention relates to a painting process, and more precisely, relates to a method for spraying a plastic shell. Background technique [0002] With the development of science and technology, people have more and more demands for electronic products, and the requirements are getting higher and higher. With the improvement of living standards, people are no longer limited to the requirements of the intrinsic performance of electronic products. Consumers are more concerned about As for the appearance of electronic products, plastic shells, as the most common peripheral accessories, carry most of people's needs for the artistic enjoyment of electronic products. Mobile phones are the most commonly used electronic products. The existing plastic shells of mobile phones are painted by ordinary techniques, giving consumers a low-end feeling. At the same time, the simple painting process is easy to form cracks on the surface, causing problems such as surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/02B05D5/06B05D3/00B05D3/02C23C14/06
CPCB05D3/002B05D3/0254B05D5/061B05D7/02B05D7/574C23C14/0688
Inventor 陈来运
Owner 陈来运
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