PERMASET® PRINT RETARDER PERMASET® Print Retarder is designed to slow the drying of PERMASET® inks and other printing products. This has benefit of retarding the drying of PERMASET® ink in the screen, thus increasing open time and reducing drying in or clogging of the screen. Addition of PERMASET® Print Retarder also improves screen release, both ink through the screen and screen from the print.
ADDITION LEVELS PERMASET® Print Retarder is normally added from 1-3% (10-30 mL/L) of the total volume of ink. The exact amount of PERMASET® Print Retarder required for any print job in any print shop should be determined by testing at an individual shop level, due to varying temperature, humidity and other local conditions. Generally, high temperature, low humidity and high airflow in the printing environment increase the tendency to dry in and thus the application benefits for higher additions of PERMASET® Print Retarder.
BENEFITS PERMASET® Print Retarder slows drying of the ink in the screen, allowing a longer open time and saving screens from clogging. PERMASET® Print Retarder also allows a slightly easier release of the screen from the print during the printing process. USAGE INSTRUCTIONS As a general guide, add PERMASET Print Retarder at 1-2% in PERMASET AQUA® and PERMATONE® inks, 2-5% in PERMASET SUPERCOVER® inks and 1-2% for PERMAPRINT® Premium inks. Stir in thoroughly. Alternatively,
PERMASET® Print Retarder can be diluted from 50-90% with water in a spray bottle and sprayed over the ink film on the screen between prints. A highly recommended additional option is to spray the diluted mixture over the screen around 10 minutes before use, but definitely after registering the screen and taping off all crop and registration marks. Allow to soak in for 5-10 minutes. Then, with a lint-free rag, wipe over all dry areas of emulsion, top and bottom and wipe excess mixture off the screen. When the screen image area no longer feels damp, add ink into the screen and commence printing.