Ink peels/flakes off substrate
Ink
Problem
1. Wrong ink system.
2. Wrong or no hardener.
3. Wrong/imprecise mixing proportions.
Solution
1. Only use ink system suited to substrate according to technical bulletin.
2. Corresponding hardener must be added to two component inks.
3. Weigh proportion of ink to hardener exactly.
Cliche
Pad
Problem
1. Oily pad surface.
Solution
1. Clean new pads with alcohol before use.
Substrate
Problem
1. Soiled surface (grease, oil, perspiration, mold release agents).
Solution
1. Pre-clean substrate with alcohol.
Other
Problem
1. Surface insufficiently or not at all pre-treated.
2. Curing (drying) time not observed.
3. Subsequent treatment of surface insufficient or lacking.
Solution
1. Check pre-treatment, repeat as needed.
2. Observe curing time as per technical bulletin.
3. Check subsequent treatment.
This Problem
frequently occurs because the type of plastic material is unknown, or unsuitable ink systems are
used. The requirements for adhesion and scratch proofing are very different due to the respective demands
placed on the finished products.
It is expressly recommended that the printing material be checked under the respective conditions of use
before printing any production run.
