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Technology for directly printing pattern on plastic electroplated key cap

A technology for printing patterns and keycaps, applied in printing, printing devices, electrical components, etc., can solve problems such as poor wear resistance, poor surface hardness, and unstable dimensions, and achieve good surface hardness, easy processing, and stable dimensions Effect

Active Publication Date: 2016-09-07
DONGGUAN SINCO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the keys of electronic products, in order to meet the requirements of metal effect on the surface, scratch resistance and good surface hardness, if pure metal materials are used to process such keys, the cost will be very high and difficult to process because they can only be cut and processed by CNC machine tools. Batch processing, size is not stable
In addition, in the prior art, when printing required characters or patterns on the metal film layer of the key, the metal film layer of the key has high surface hardness and stable physical properties, so it is not easy to combine with the printing ink, often resulting in printed characters or patterns. The adhesion between the pattern and the metal film layer is poor, and the characters or patterns printed in the prior art have the defects of poor surface hardness, poor wear resistance, corrosion resistance and oxidation resistance

Method used

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  • Technology for directly printing pattern on plastic electroplated key cap

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of process of directly printing patterns on the plastic water-plated keycap of the present embodiment, it comprises the following steps:

[0035] Step 1, injection molding keycaps: use the keycap injection mold to inject conductive ASB plastic material into keycaps; in this embodiment, the injection molding conditions are: injection molding temperature is 240°C, injection pressure is 80kgf / cm 2 , the injection time is 20s;

[0036] Step 2, coating the keycap with insulating oil: apply washable insulating oil on the bottom of the keycap in step 1, and after baking at 60°C for 10 minutes, a washable insulating oil layer is formed on the bottom of the keycap; among them, the insulating The oil is provided by Shenzhen Wanjiayuan Refining Technology Co., Ltd., and its model is 3389-09 insulating oil;

[0037] Step 3, electroplating a metal film layer: using an electroplating process to electroplate a metal film layer on the surface of the keycap coated with insulatin...

Embodiment 2

[0042] A kind of process of directly printing patterns on the plastic water-plated keycap of the present embodiment, it comprises the following steps:

[0043] Step 1, injection molding keycaps: use the keycap injection mold to inject conductive ASB plastic material into keycaps; in this embodiment, the injection molding conditions are: the injection temperature is 220°C, and the injection pressure is 70kgf / cm 2 , the injection time is 25s;

[0044] Step 2, coating the keycap with insulating oil: apply washable insulating oil on the bottom of the keycap in step 1, and after baking at 50°C for 12 minutes, a washable insulating oil layer is formed on the bottom of the keycap; among them, the insulating The oil is provided by Shenzhen Wanjiayuan Refining Technology Co., Ltd., and its model is 3389-09 insulating oil;

[0045] Step 3, electroplating a metal film layer: using an electroplating process to electroplate a metal film layer on the surface of the keycap coated with insulat...

Embodiment 3

[0050] A kind of process of directly printing patterns on the plastic water-plated keycap of the present embodiment, it comprises the following steps:

[0051] Step 1, injection molding keycaps: use the keycap injection mold to inject conductive ASB plastic material into keycaps; in this embodiment, the injection molding conditions are: injection molding temperature is 260°C, injection pressure is 90kgf / cm 2 , the injection time is 15s;

[0052] Step 2, coating the keycap with insulating oil: apply washable insulating oil on the bottom of the keycap in step 1, and bake at 70°C for 8 minutes to form a washable insulating oil layer on the bottom of the keycap; among them, the insulating The oil is provided by Shenzhen Wanjiayuan Refining Technology Co., Ltd., and its model is 3389-09 insulating oil;

[0053] Step 3, electroplating a metal film layer: using an electroplating process to electroplate a metal film layer on the surface of the keycap coated with insulating oil at the...

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Abstract

The invention relates to the technical field of keys of electronic products, and especially relates to a technology for directly printing a pattern on a plastic electroplated key cap. The technology comprises the steps: 1, carrying out the injection moulding of a key cap; 2, coating the insulating cap with insulating oil; 3, carrying out the electroplating of a metal film; 4, washing an insulating oil layer at the bottom of the key cap; 5, printing ink on the surface of the key cap; 6, carrying out assembly. Because the surface of the key cap after injection moulding is coated with the metal film, compared with a mode of employing a pure metal material to process the key in the prior art, the technology is low in production cost, can achieve batch production, and is stable in size of a produced key cap. Moreover, the technology can guarantee the good adhesive force between the printed character or pattern and the metal film, and the printed character or pattern is good in surface hardness, is good in performance of wear resistance, and is resistant to corrosion and oxidation.

Description

technical field [0001] The invention relates to the technical field of keypads for electronic products, in particular to a process for directly printing patterns on plastic water-plated keycaps. Background technique [0002] With the continuous development of the communication electronics industry, the appearance and function of its related products are also constantly changing. At the same time, more requirements are put forward for the appearance, structural design and environmental performance of the products. For the keys of electronic products, in order to meet the requirements of metal effect on the surface, scratch resistance and good surface hardness, if pure metal materials are used to process such keys, the cost will be very high and difficult to process because they can only be cut and processed by CNC machine tools. Batch processing, the size is not stable. In addition, in the prior art, when printing required characters or patterns on the metal film layer of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H13/88B41M1/30
CPCB41M1/30H01H13/88H01H2229/014H01H2229/044
Inventor 李文联
Owner DONGGUAN SINCO ELECTRONICS
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