Laird Technologies has released EMI Gemini, multi-extrusion shielding gaskets. The products feature a thin, electrically-conductive filler elastomer gasket layer and an inner, non-conductive silicone coated core gasket. The conductive material portion of the gasket, usually loaded with silver, aluminium, nickel or copper is reduced due to the substitution of the silicone core. The reduction of the conductive material lowers the total cost. Extruded in various sizes and profiles, the gaskets provide better EMI protection with a lower deflection while sealing against environmental influences such as moisture and dust.
The gaskets are manufactured in parallel using a ram and/or screw-type extrusion equipment. The extruder equipment incorporates a complex fixture that contains specific tools, depending on the profile. This combination with the multi-extrusion of silicones in many applications optimises the performance-to-cost ratio by leveraging material costs and extending the longevity of the assemblies.
The gaskets are suitable for military, medical, and commercial applications requiring application-specific high shielding requirements.
