Plastic surface local electroplating method

A local electroplating and plastic technology, which is applied in the field of local electroplating accessories and local electroplating on plastic surfaces, can solve the problems of high cost, insufficient precision of the tape method, and difficult application of complex workpiece surfaces, etc., to solve the problem of local electroplating and reduce the discharge of electroplating wastewater , the effect of solving the singleness problem

Inactive Publication Date: 2013-03-20
XIAMEN RUNNER IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the early days, for structural components that did not require electroplating in parts, it was generally realized by two-color injection molding or a combination of various accessories. The operation process was complicated and costly, and the traditional plastic partial electroplating process had three major disadvantages:
[0003] (1) Plastics that can be electroplated are limited to ABS, ABS+PC and a few nylon materials;
[0004] (2) Pre-plating treatment (phosphide degreasing, high chromic acid roughening, precious metal catalysis, electroless copper/nickel plating, etc.) not only uses some toxic and harmful substances, but also produces a large amount of sewage durin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1: A method of partial electroplating on the surface of ABS shower

[0037] Specific steps are as follows:

[0038] 1) After cleaning the surface of the ABS shower injection molding blank, dry it at 70°C for 1 hour;

[0039] 2) Put the dried blanks into vacuum equipment through hanging rods for low-temperature plasma glow cleaning and surface modification. The glow cleaning process conditions are ion source current: 0.3~0.5A, bias voltage: 100-200V , Duty ratio: 50-75%, Argon flow rate: 50-150SCCM, furnace vacuum pressure: 1.0-2.0Pa, glow time: 2-3min; the subsequent surface modification process conditions are ion source current: 0.3 ~0.5A, bias voltage: 80-150V, duty cycle: 50-75%, argon flow rate: 10-100SCCM, oxygen flow rate: 50-150SCCM, vacuum pressure in the furnace: 1.0-2.0Pa, modification time: 3 -5min;

[0040] 3) Deposit a conductive layer on the surface of the ABS shower, which is divided into three parts from bottom to top: a) Metal bottom layer, using arc ...

Example Embodiment

[0043] Example 2: A partial electroplating method on the surface of a transparent PC washing machine button

[0044] Specific steps are as follows:

[0045] 1) After cleaning the surface of the transparent PC material washing machine button injection molding blank, dry it at 100°C for 1 hour, and then perform electrostatic dust removal;

[0046] 2) Put the electrostatically dedusted blanks into the vacuum equipment through the hanging rod for low-temperature plasma glow cleaning and surface modification. The glow cleaning process conditions are ion source current: 0.3~0.5A, bias voltage: 200-300V , Duty ratio: 50-75%, Argon flow rate: 50-150SCCM, furnace vacuum pressure: 1.0-2.0Pa, glow time: 3-5min; the subsequent surface modification process conditions are ion source current: 0.3 ~0.5A, bias voltage: 80-150V, duty cycle: 50-75%, argon flow rate: 10-100SCCM, oxygen flow rate: 50-150SCCM, vacuum pressure in the furnace: 1.0-2.0Pa, modification time: 3 -5min;

[0047] 3) Deposit a co...

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PUM

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Abstract

The invention discloses a plastic surface local electroplating method which is used for locally electroplating accessories in the industries such as bathroom, electronics, automobiles, household appliances. The method comprises the following steps: putting a plastic base material to physical vapour deposition vacuum equipment to be vacuumized, carrying out plasma cleaning and activation on the plastic base material when vacuum degree reaches 10-2Pa, depositing a metal conducting layer in vacuum on the surface of the plastic base material which is activated, performing precise laser etching to remove local conducting layer from the plastic base material which is electroplated with the metal conducting layer, obtaining a required pattern, and performing electroplating or electroplating after-treatment to the plastic base material which is etched by laser. By the method, a high pollution plastic electroplating pre-treatment process is replaced by the physical vapour deposition for depositing the metal conducting layer, so that the wastewater discharge and environment pollution are largely reduced; and in addition, partial electroplated conducting film layer is removed through the laser etching, the plastic in the area is not conductive, and the purpose of selective metallization is reached.

Description

technical field [0001] The invention belongs to the field of plastic surface treatment, in particular to a method for partial electroplating of plastic surfaces, which is applied to partial electroplating accessories in industries such as sanitary ware, electronics, automobiles, and home appliances. Background technique [0002] The metallization process on the surface of the plastic substrate can achieve the functions of corrosion resistance, wear resistance and beautiful appearance, and has been widely used in automobiles, electronics, household appliances, kitchen and bathroom and other fields. In these fields, some structural components and some parts need to be coated, some parts do not need to be coated, or some transparent materials need to be partially transparent after surface treatment. In the early days, for structural components that did not require electroplating, it was generally realized by two-color injection molding or a combination of various accessories. T...

Claims

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Application Information

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IPC IPC(8): C25D5/56C25D5/02
Inventor 林志敏余泽峰
Owner XIAMEN RUNNER IND CORP
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