Impression between plate and substrate is too low
Increase plate impression and check print appearance.
Ink out of balance/contaminated
Increase resin solids/refresh ink. Strain ink or remake
Sticky-back tape is too soft
Use hard tape for solid print areas when possible.
Substrate is poor or marginally treated
Check and adjust treatment level or change stocks
Surface of substrate has holes
Check substrate and reduce ink viscosity for better wetting. Consult your substrate supplier.
Surface tension of ink is not low enough to properly flow out on substrate(seen mostly in aqueous inks)
Reduce surface tension of inks by adding wetting agents.
For more information, please contact us.