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Deposition Contract Manufacturing - Vacuum Deposition


In these times as environmental issues gain more and more attention, INGS Company has developed a vacuum deposition method as an alternative method to plating and has promoted sales of parts processed using this method, not only in Japan, but all over the world. Specifically, INGS is developing business for the production of environmentally friendly decorated film and functional film, focusing mainly on decorative vacuum deposition and electromagnetic shielding processes described below.

Decorative Vacuum Deposition Process (Discontinuous Vacuum Deposition) Main Features
Main Features


  1. Applying vacuum deposition onto the surface of molded plastic products gives products a metallic feel.
  2. It is possible to apply a nonconductive metal coating, preventing static electricity failure and enabling decorative coating with no effect to radio waves such as for wireless equipment.
  3. A UV curing paint used for the top coat provides high reliability. Adding colorants or matte glaze to the UV paint also allows for a variety of designs.
  4. The process is applicable not only to ABS, but also to various plastic molding materials such as PC and PC/ABS.

●Decorative Vacuum Deposition Process (Discontinuous Vacuum Deposition) Application Examples

  • Casings and external components for mobile phones and other portable electronic devices (keypads, buttons, switches, etc.)
  • Casings and external components for digital cameras, including single-lens reflex cameras (buttons, ring adaptors, etc.)
  • External components for digital video cameras (= camcorders)
  • External casings and components for laptop computers
  • Gaming consoles
  • External casings for automobile GPS equipment
  • External components for music players
  • External components for entertainment-related machines
Electromagnetic Shielding Process (EMI Shield)


Pioneering the process of electromagnetic shielding to prevent electromagnetic interference for electronic devices, INGS has developed an environmentally friendly ion plating method with vacuum deposition at its core. We have proven our method in the mobile phone unit shielding market, which is representative of the communication device sector in the IT field, and have gained a high reputation.

●Thick Film Vacuum Deposition Application Examples

  • Mobile phones and other
    mobile electronic devices
  • Laptop computers
  • Gaming consoles
  • Projectors
  • DVDs
  • Electronic devices for
  • Electronic medical equipment
Technology Information
  • Thickness of vacuum deposited film
    The thickness of Cu+IS (Sn type), Cu+Ni, and Al films is approximately 2 µm. We have realized an extremely thick shielding film when compared to the thickness of decorative Al film applied by conventional vacuum deposition (0.03-0.07µm).
  • Shielding effect
    The high frequency ion plating film demonstrates highly effective shielding in a high radio frequency range.
  • Adhesiveness
    The high frequency ion plating film has received the highest rating, 5B, in an adhesive tape test regulated by the Underwriters Laboratories (UL) standards.
  • Environmentally Friendly
    The high frequency ion plating method is a dry method and does not generate hazardous substances that pollute the environment.


Process Flow Chart

Conventional decorative processing and EMI shielding are electroless plating and vacuum deposition methods. Electroless plating is a wet process which gives bad effects on the environment and has a limitation in masking, while in vacuum deposition the film does not adhere well. CBC overcame these faults using a high speed radio frequency ion plating method (RFIP). Using this method, first of all, plasma etching roughens the surface of the plastic and removes vacuum deposition inhibitors such as oils and greatly improves the adherence of the film. Depending on the type of plastic, this process achieves enough oil removal and roughening to omit the step of applying an undercoat, thereby reducing costs. Next, vacuum deposition conducted in a plasma environment increases deposition density. It also allows good adherence even for plastic products that have a complicated three dimensional shape.