Surface Buzz

Higher power has set off changes in electrode materials. Opad cites a shift away from aluminum in favor of less corrosive, stainless steel finned electrodes, which provide a smoother, softer corona.

Increased power requirements are a product of faster line speeds—and this requirement combination has grown requests for ceramic dielectrics on covered roll systems, especially on coating and laminating lines, observes Jan Westerheim, president of Solo Systems.