For electronic enclosures, ensuring protection from electromagnetic interference (EMI) while maintaining electrical grounding is critical. However, powder coating, commonly used for these enclosures, can impede the necessary electrical path for optimal EMI shielding and grounding. This is where CHO-MASK II EMI masking tapes come in as a dependable, user-friendly solution that preserves a conductive path. CHO-MASK II, a metal foil tape, leaves an electrically conductive, corrosion-resistant surface after powder coating, ready for EMI gasket applications.
Precision engineering
CHO-MASK II stands out due to its precise construction, consisting of three layers: a recessed polyester masking film, a metallic layer made of either 1 oz. (28.4g) or 2 oz. (56.7g) tin copper foil, and an electrically conductive pressure-sensitive adhesive (PSA) that ensures firm attachment to frames, doors, and panels.
Application process
The application is both simple and effective. CHO-MASK II is applied to clean metal surfaces where electrical continuity is required. After application, the enclosure undergoes painting, with the masking film intact. Once painting is completed, the polyester mask is easily removed, leaving a non-corroding metal surface that seamlessly integrates with EMI shielding gaskets. From telecommunications to aerospace and industrial automation, effective EMI shielding and grounding are universally needed.
Efficient and reliable
In summary, CHO-MASK II EMI foil tape provides a straightforward, reliable solution for maintaining electrical continuity in painted enclosures. Its advanced materials and robust design make it an essential component for achieving effective EMI shielding and environmental sealing in various assemblies.
