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Method for vacuum sputtering of anti-EMI film on plastic rubber substrate

A vacuum sputtering and plastics technology, applied in vacuum evaporation coating, sputtering coating, ion implantation coating, etc., can solve the problems of high fixture cost, troublesome and inconvenient use, etc.

Inactive Publication Date: 2007-05-16
MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the spraying parts need to be covered with aluminum alloy fixtures during the sputtering process, and the cost of the fixtures is very high
[0004] Above-mentioned prior art produces trouble and inconvenience when using, really needs to improve

Method used

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  • Method for vacuum sputtering of anti-EMI film on plastic rubber substrate

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Embodiment Construction

[0016] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0017] As shown in FIG. 2 , a method for coating an anti-EMI film on a plastic substrate by vacuum sputtering includes the following three steps.

[0018] Step 1, the sandblasting step, spraying white corundum sand on the surface of the plastic substrate 1;

[0019] Step 2, the cleaning step, uses ultrasonic waves to clean the sand grains on the surface of the plastic substrate 1 that has been sandblasted. The principle of ultrasonic cleaning is that the high-frequency oscillation signal sent by the ultrasonic generator is converted into high-frequency mechanical oscillation by the transducer and propagated to the medium-cleaning solvent. The liquid flows and produces tens of thousands of tiny air bubbles. These bubbles form and grow in the negative pressure zone where the ultrasonic wave travels longitudinally, and close quickly in the positive pressure zone. In t...

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Abstract

The invention discloses a preparing method of superposition anti-EMI film on the plastic base through vacuum spraying, which comprises the following steps: spraying sand on the base surface through alumina; washing the sand of base surface; spraying in the vacuum; coating a layer of Cu layer and SUS layer on the whole plastic base; reducing resistant value of film layer; reinforcing anti-EMI effect; saving spraying waste.

Description

technical field [0001] The invention relates to a plastic surface treatment method, in particular to a method for coating an anti-EMI film on a plastic substrate by vacuum sputtering. Background technique [0002] Plastic anti-EMI generally adopts electroless plating technology to plate a copper film of about 2.5um on the surface of the plastic, and the shielding effect can reach more than 70dB. Plating an anti-EMI copper film on the plastic surface by electroless plating method will cause great pollution to the environment. [0003] Vacuum sputtering method is used to plate anti-EMI copper film. Due to the temperature problem of sputtering, only 0.56um copper can be plated at a time, and the shielding effect is only 57Db, and only one side can be sputtered, so it needs to be repeated for more than two times. The masking effect can reach more than 70dB, reducing production efficiency. As shown in FIG. 1 , a Cu layer 2 is sputtered on one side of a plastic substrate 1 , and...

Claims

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Application Information

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IPC IPC(8): C23C14/34C23C14/02C23C14/12C23C14/20
Inventor 吴政道
Owner MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY