Potential Problems in Printing – Description of Problems and Proposed Solutions
Problem | Solution |
---|---|
1. Wrong ink system. | 1. Only use ink system suited to substrate according to technical bulletin. |
2. Wrong or no hardener. | 2. Corresponding hardener must be added to two component inks. |
3. Wrong/imprecise mixing proportions. | 3. Weigh proportion of ink to hardener exactly. |
Problem | Solution |
---|---|
Problem | Solution |
---|---|
1. Oily pad surface. | 1. Clean new pads with alcohol before use. |
Problem | Solution |
---|---|
1. Soiled surface (grease, oil, perspiration, mold release agents). | 1. Pre-clean substrate with alcohol. |
Problem | Solution |
---|---|
1. Surface insufficiently or not at all pre-treated. | 1. Check pre-treatment, repeat as needed. |
2. Curing (drying) time not observed. | 2. Observe curing time as per technical bulletin. |
3. Subsequent treatment of surface insufficient or lacking. | 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.