Harper releases corrosion-resistant anilox coating

Global anilox supplier Harper Corporation of America has announced the introduction of Resistalloy, a combination of a specially developed thermal spray process and   parameters plus corrosion resistant materials.
According to Art Ehrenberg, Vice President of Operations, “This extraordinary new process was developed over the past three years and allows us to provide a highly corrosion resistant layer to anilox rolls of almost any size and tube wall thickness. The relatively thin coating is applied at supersonic velocities which yields a coating density of  99.8%, making the coating virtually a solid”. The super dense coating prevents migration of corrosive chemistries of inks and cleaners from penetrating to the mild steel roll core where corrosion typically begins.

Combined with specially formulated materials for various corrosive environments, the process is claimed to provide corrosion resistance two to three times longer than competitive methods. Corrosive environments have driven some converters to the use of stainless steel anilox cores or stainless welds which are very costly and do not always provide the proper corrosion resistance in chemistries such as those containing chlorine.