EMI/RFI Shielding Formulations

Surround™ EMI/RFI Shielding Formulations

Protects Electronics

Surround is an electrically conductive, long fiber thermoplastic material formulated specifically to work in critical electronic applications such as advanced driver assistance systems (ADAS), medical devices, and wire and cable and electrical connectors. These formulations provide electromagnetic and radio frequency interference (EMI/RFI) shielding at a weight reduction of up to 40% as compared to aluminum, copper, and other metals. They also can eliminate additional painting steps to an application in need of shielding protection.

Additional benefits and features of Surround formulations vary depending on the reinforcing additives used, such as nickel-coated carbon fiber and stainless steel fiber. A variety of base resins can be used to create Surround formulations to either concentrate (intended to let down at the press) or direct-to-mold fiber loadings. 

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  • Provides integrated EMI/RFI shielding on par with metals
  • Eliminates need for secondary operations
  • Design freedom of injection molding, including thinner walls
  • Lighter weight and easier to process than aluminum or copper
  • Durable and non-corrosive


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Avient Long Fiber Technology Video Provides structural performance that can go head-to-head with metals at a fraction of the weight View
Battery Pack Housing Case Study (Snapshot) Provided a custom concentrate material for flexibility in tailoring static dissipation performance View
Engineered Polymer Materials for EV Batteries Video Learn more about advanced polymer technologies that enhance EV battery design and performance to enable benefits such as extended vehicle range, lightweighting and sustainability. View
Long Fiber Technologies Application Development Product/Service Overview Avient long fiber technologies application development center bulletin highlighting services including design support, material validation, simulation support, and in-house prototyping View
Surround™ Connector Cover Case Study (Snapshot) EMI-shielding performance at frequencies from 30 MHz up to 2 GHz View
Surround™ EMI/RFI Shielding Formulations Processing & Design Guides Surround EMI/RFI Shielding Formulations are developed to protect critical electronics applications by minimizing electromagnetic and radio frequency interference (EMI/RFI). View