Maximum ink tensile strength and elongation is accomplished by ensuring total fusion of the ink film. Testing procedures include wash testing and testing with solvent, with wash testing being the more reliable
method.
To cure plastisol inks the ink film must reach appropriate cure temperature. A heat history includes time and temperature used to reach total fusion or cure in ink. This cure or fusion is instantaneous once the entire
ink film hits the cure temperature (320°F/160°C).