Coating method for plastic parts

A coating method and a technology for plastic parts, which are applied in the direction of surface coating liquid devices, coatings, pre-treated surfaces, etc., can solve problems such as poor product appearance, failure to meet the adhesion test, etc., to improve the failure of the performance test , Improve coating yield and reduce production cost

Inactive Publication Date: 2013-10-09
DONGMING XINGYE SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For white plastic parts, the heterochromatic spots (mostly black and blue spots) on the plastic parts cannot be completely covered during coating, resulting in poor appearance of the product; in the coating of plastic parts made of special materials, special Only high-quality coatings can meet the requirements of the performance test, otherwise the performance test NG will appear, especially the adhesion test cannot meet the standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0016] The plastic parts coating method of the present invention, its preferred embodiment is:

[0017] Include the following steps in order:

[0018] Assembling the painting tooling: preparing the painting tooling for effective control of the painting area, and clamping the plastic parts to the assembly line through the painting tooling;

[0019] Surface cleaning of plastic parts: cleaning the plastic parts on the painting tooling to remove the stains, foreign matter and oil stains adsorbed on the surface of the plastic parts;

[0020] Electrostatic dust removal: carry out electrostatic dust removal operation on the cleaned plastic parts and painting tooling, which is used to eliminate static electricity on plastic parts and painting tooling, and further remove foreign matter remaining on the surface of plastic parts and painting tooling;

[0021] PRIMER (priming paint) + primer coating: first coat PRIMER evenly and continuously on the plastic parts, then apply the primer qu...

specific Embodiment 1

[0056] In the prior art, two coats of pure white paint are used to coat white plastic parts. During the implementation process, the heterochromatic spots (mostly black and blue spots) on the plastic parts cannot be completely covered, resulting in poor appearance of the product.

[0057] In this embodiment 1, without increasing the cost of equipment, PRIMER is used to cover the defects of heterochromatic spots so as to improve the coating yield. The specific implementation steps are as follows:

[0058] Assembling the painting tooling: prepare the painting tooling, realize the effective control of the painting area, and install the plastic parts on the assembly line;

[0059] Surface cleaning of plastic parts: Clean the plastic parts on the painting tooling to remove the stains, foreign objects, oil stains, etc. adsorbed on the surface of the plastic parts;

[0060] Electrostatic dust removal: carry out electrostatic dust removal operation on the cleaned plastic parts and pain...

specific Embodiment 2

[0098] In the prior art, in the coating of plastic parts of special materials, special coatings are required to meet the requirements of the performance test, otherwise the performance test NG will occur, especially the adhesion test cannot meet the standard.

[0099] In the second embodiment, a special paint is used as a PRIMER, and then a general paint is used to coat the corresponding color and luster. It can solve the problem of performance experiment NG. The specific implementation steps are as follows:

[0100] Assembling the painting tooling: prepare the painting tooling, realize the effective control of the painting area, and install the plastic parts on the assembly line;

[0101] Surface cleaning of plastic parts: Clean the plastic parts on the painting tooling to remove the stains, foreign objects, oil stains, etc. adsorbed on the surface of the plastic parts;

[0102] Electrostatic dust removal: carry out electrostatic dust removal operation on the cleaned plasti...

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PUM

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Abstract

The invention discloses a coating method for plastic parts. The coating method comprises the steps of assembling coating tools, cleaning the surfaces of the plastic parts, electrostatic dust removal, PRIMER and primer coating, surface coating and the like which are sequentially carried out. Under the condition of not affecting control procedures of a coating process, the coating yield can be increased or the problem of disqualification in performance experiments can be improved by coating the PRIMER. A production process is easy and convenient to operate, and can be used for greatly reducing the production cost.

Description

technical field [0001] The invention relates to a surface coating technology for plastic products, in particular to a coating method for plastic parts. Background technique [0002] At present, with the advancement of science and technology, the degree of metallization of electronics and communication consumer goods (especially mobile phones) is getting higher and higher, and the surface hardness, corrosion resistance, friction resistance, high temperature and high humidity resistance and surface color, etc. The requirements are also getting higher and higher. [0003] In the prior art, for example, Chinese patent (application number 201110062689.7) discloses a coating process for plastic parts of mobile phones, which controls the performance and color of mobile phone surface decoration by controlling the coating of primer and topcoat. [0004] There are at least the following disadvantages in the above-mentioned prior art: [0005] For white plastic parts, the heterochrom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/38B05D3/00B05D3/02B05D3/06
Inventor 王炜常雷冯振军吴奔王宏烈陈世杰
Owner DONGMING XINGYE SCI TECH CO LTD
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