Fine line etching is becoming an ever increasing requirement in both innerlayer manufacture and chemical milling. The DuPont™ Riston® EtchMaster film series is specifically designed as a acid etching film that delivers high yields in fine line applications. These resists provide excellent conformation using dry lamination and are compatible with the YieldMaster® 2000 Wet Lamination System. The EtchMaster series of films possess wide exposure, developing and stripping latitude.

• Riston® EtchMaster 213 is a high productivity acid etch film that has excellent flexibility and adhesion on many different metal surfaces, such as copper, stainless steel, steel and nickel/iron alloys, and aluminum.
• Riston® EtchMaster 830 is a high productivity acid etch film for fine line innerlayers with lines/features down to 2 mils.