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EMI/RFI Shielding

CWSTs EM Coating Services is the industry leader in applying conductive coating and electroless plating processes for EMIRFI shielding and semi conductive coating processes for electrostatic dissipation

Electrostatic discharge makes smaller electronic components susceptible to damage or failure. To ensure the operational integrity of new, high-performance products, Evershield® is applied as a conductive coating or electroless plating process for EMI/RFI shielding and semi-conductive coating processes for electrostatic dissipation. EMI/RFI shielding blocks unwanted external and/or internal electromagnetic waves and radio frequency waves from emitting or interfering with the shielded unit, other circuits, or devices.

Benefits of Evershield EMI/RFI Shielding

  • Surface resistivity of 10 (5) to 10 (12) ohms per square
  • Outstanding corrosion protection
  • Good lubricity on high-friction surfaces
  • Excellent wear resistance
  • High temperature and cryogenic stability
  • Electroless plating process can be solderable

Typical Applications of Evershield EMI/RFI Shielding

  • Computers and Peripherals
  • Video Display Terminals
  • Medical Electronics
  • Telecommunication Devices
  • Automotive Electronics

Read More About EMI/RFI Shielding

Additional Informational Resources

Evershield Electrostatic Control Coatings

EMI/RFI Shielding of Plastics

Metallization of Plastics for EMI/RFI Shielding

Electromagnetic Compatibility

Ohms per Square

Collaborative Engineering Projects

Protecting the electronic equipment at 30,000 feet is a priority for every airliner and their military communications systems. That is why Alpine Materials recently partnered with Curtiss-Wright Surface Technologies (Metal Improvement Company) to perform EMI shielding coating to evaluate attenuation for their HX5® nanocomposite material commonly used in aerospace applications. HX5 is natively resistant to some electromagnetic wavelengths. Still, after being coated with our Evershield®, a bimetallic EMI shielding, our natively EMI-protected composite, we enhance the ability for next-gen products to be further protected against interference,” said Aaron Daniel, Director of Engineering at Alpine. “As the push to reduce weight in the aerospace industry increases, thereby driving smaller design spaces and increased component density, the need to ensure electrical integrity has never been more critical. Our proprietary Evershield EMI/RFI shielding coating is well positioned to meet the growing need to protect electronics from EMI/RFI Interference”, said David Rivellini, President of Curtiss-Wright Surface
Our combined expertise to enrich performance and safety ensures external inference will stay just that – external.

Evershield for Superior EMI/RFI Shielding

  • Conductive Coatings for EMI/RFI Shielding
    CWST E/M Coating Services offers a broad range of EMI/RFI shielding processes that ensure the reliable performance of electronic devices. As a long-time leader in applying engineered coating solutions, our cost-effective processes meet shielding and ground plane needs, ranging from FCC and European Union compliance to critical shielding and electrical bonding requirements for aircraft, missile, and medical components.
  • Semi-conductive Coatings for Electrostatic Control
    Due to electrostatic discharge, smaller electronic components are particularly susceptible to damage or failure. In the search for ways to ensure the operational integrity of new, high-performance products, electronics manufacturers turn to E/M Coating Services for their application needs. E/M Coating Services applies coatings that provide:
    • Surface resistivity of 1 x 10(5) to 1 x 10(12) ohms per square, ASTM D257
    • Outstanding corrosion protection
    • Good lubricity on high-friction surfaces
    • Excellent wear resistance
    • High temperature and cryogenic stability

Electroless Plating Processes for EMI/RFI Shielding

CWST EM Coating has led the development of electroless plating technology for plastic, plastic composite, and ceramic substrates that achieve extremely high levels of electromagnetic shielding. We offer the broadest range of solutions to the problems in designing and manufacturing electronic devices and components. While achieving extremely high attenuation levels, our electroless plating processes meet stringent environmental requirements.

Advantages of EMI/RFI Shielding

  • High levels of shielding at very thin plating thicknesses-as low as 0.000020″ (1/2 micron)
  • Extreme uniformity of plating thicknesses and EMI/RFI shielding
  • Ability to achieve excellent grounding for lightning protection while withstanding heavy corrosion
  • Toughness and durability-excellent results in drop testing
  • Applicable to almost any advanced engineering thermoset, thermoplastic or composite

Quality Assurance

E/M Coating Services employs Statistical Process Control (SPC) methods to maintain the highest standards of quality. We’ve developed a wide variety of pretreatment techniques that ensure the adhesion of Evershield plating processes to virtually all plastic, glass, or carbon-reinforced plastics and composite materials.
CWST’s E/M Coating Services location in Minnesota offers this processing.

The New Brighton facility is unique in its offerings of EMI/RFI shielding processes. One of our main differentiators is our tank size. With some of the largest tanks available, we can process large components and maximize capacity and throughput. Additionally, our proprietary electroless plating technologies for plastic, composite and ceramic components ensure high levels of electromagnetic shielding and allows us to get into the nooks and crannies of parts with complex geometry. And, we are NADCAP accredited.