Electronic shielding applications are growing with the expanded use of plastic housings due to the required cost and weight reductions of metal counterparts. Complex shapes can be coated by physical vapor deposition (PVD) using magnetron sputtering, yielding increases of coating adhesion and offering a wider variety of materials that can be deposited over coatings. Traditionally, these coatings have been deposited using thermal evaporation. With PVD, films greater than one micron thick can be deposited uniformly by utilizing planetary rotation. Complex masking can be accomplished with multiple techniques including laser cutting, additive manufacturing and injection molded fixtures. Key to a successful product deployment is to involve your PVD partner early in the product design to simplify the coating masks and reduce part handling during the coating process, which can reduce the coating costs and improve the shielding coating performance.
EMI shielding is most commonly used in electronic devices in the automotive and health care industries, mobile devices, and for military hardware and avionics.
Vergason Technology, Inc., provider of quality metalizing services, as well as vacuum metalizing equipment, is happy to provide you with additional information regarding this shielding, as well our many other products and services.