Streaks appear on web or signatures. This is caused by ink re-softening due to solvent condensation on chill rolls.
Check dryer and/or chill roll temperature. Use inks with lower boiling point solvents if possible. Consult suppliers of dryer, chill rolls and inks, as necessary.
Dryer temperature is too high, inhibiting the ability of chill rolls to cool web efﬁciently.
Decrease web exit temperature.
Marking appears on chills or delivery equipment.
Check web temperature from dryer and chill rolls. Check cooling efﬁciency of chill roll system.
Excessive ink ﬁlm thickness is being run.
Consult your Sun Chemical representative about stronger ink formulations.