POLY/Solv RS-720 (RS-720) is a highly concentrated solution designed to economically and efficiently strip
most commercially available, fully aqueous dry film resists. RS-720’s unique formulation contains penetrating
additives designed to reduce entrapment of dry film in areas exhibiting tin or tin/lead over-plate. Additionally,
RS-720 does not include sodium, potassium, or ammonium hydroxide, or alcohols (including methanol);
reducing alkaline attack of copper, tin, and solder. As such, RS-720 is easier to waste treat and exhibits less
odor than many competitive products. RS-720 was formulated to produce stripped resist particles averaging
0.2 – 0.5 cm in diameter (with most dry films), facilitating resist particulate filtration. RS-720 also incorporates
a unique blend of inhibitor compounds to minimize corrosion of tin-lead and/or solder on hard boards and
leave a bright, stable, oxide free copper surface suitable for AOI inspection.
- Exhibits minimal chemical and/or galvanic corrosion attack on solder simplifying waste treatment of spent solutions and resist particulate.
- The formulation of RS-720 does not contain sodium or potassium hydroxide, glycol ethers, or alcohols.
- RS-720 is highly concentrated and is effective at concentrations as low as 4% in spray applications.
- Suitable for feed and bleed processing with Seacole’s automated resist strip.