EMI Shielding for Powder Coated and Painted Enclosures with CHO-Mask II EMI Foil Tapes
For electronic enclosures, safeguarding against electromagnetic interference (EMI) while maintaining an electrical ground is paramount. However, the powder-coating processes frequently utilized on these enclosures inhibit the proper electrical path required for high EMI shielding and grounding performance. This is where the CHO-MASK II family of EMI masking tapes step in as a reliable, easy-to-use solution to ensure that a conductive electrical path is maintained. CHO-MASK II is a metal foil masking tape that leaves behind an electrically conductive, non-corroding surface after powder coating operations for mating to EMI shielding gaskets.
Meticulous construction
What sets CHO-MASK II apart is its meticulous construction comprised of three layers: a recessed polyester paint masking film, a metallic layer of either 1 oz. (28.4g) or 2 oz. (56.7g) tin copper foil, and an electrically conductive pressure-sensitive adhesive (PSA) on the back for secure adhesion to frame, door, and panel surfaces.
Application process
The application process is straightforward yet effective. CHO-MASK II tape is applied to the clean metal surfaces where electrical continuity is essential. Once in place, the enclosure undergoes painting, with the peel-off mask left intact. After painting, removing the polyester mask is effortless, allowing the paint to seamlessly seal both edges of the remaining foil layer, leaving behind a non-corroding metal surface ideal for use with conductive gasket technology. Whether in telecommunications, aerospace, or industrial automation, the need for robust EMI shielding and reliable grounding is universal.
Simple, yet effective
In conclusion, CHO-MASK II EMI foil tape is a simple yet effective solution for electrical continuity in painted electronic enclosures. By combining advanced materials and reliable construction, CHO-MASK II provides a necessary component for EMI shielded and environmentally sealed assemblies.