First down color is not fully dry
Increase drying speed of first down ink by:
- Reducing ink viscosity
- Reducing ink film thickness by using shallower anilox volume
- Adding faster drying solvents
- Increasing dryer temperature and air velocity in dryer
Second down ink is drying too fast and not printing
Check and eliminate air blowing on plates; add slower drying solvents
Wax or slip aid in first down ink is excessive
Check formula and remake ink if necessary
Second down ink is not compatible with first down ink
Consult your Sun Chemical representative for proper ink type