By Mark Miller, CEO, Coating Tech Slot Dies LLC Introduction Typically, when you coat a fluid out onto a substrate, the fluid flows to the limits of the coating head and provides a solid layer of fluid over the substrate. Sometimes, however, the fluid resists this reformation and coating defects occur. Pinholes, ribs and beading-up of the fluid are common when the fluid … [Read more...] about The effects of surface treatment at the coating-head interface