Drying is too slow
Causes:
– Thickness is too high which leads to an external drying while the solvents
are trapped in the paint film.
– Paint is sprayed over wax, oil, and grease.
– Drying in bad conditions: Workshop is too cold, humid and non-ventilated.
– Bad application conditions: Not enough air circulation and/or heat.
– Not enough flash off time.
– Too much retarder used.
– Incorrect hardener or mixing ratios.
Preventive measures:
– Clean surface thoroughly before painting.
– Avoid thick layers.
– Improve spraying and drying conditions (heat, air circulation, etc.).
– Allow enough flash off times.
– Use recommended hardener and thinner and observe mixing ratios.
Remedy:
In general, it is possible to remedy a slow drying problem by moving the vehicle to a place where the ventilation and the temperature are more appropriate or by heating at a moderate temperature (unless the problem is due to the use of a wrong hardener or wrong mixing ratio of hardener – non stoichiometric ratio). If the problem is due to very thick layers, “des rides” may show, except if special care is taken during the heating phase.
- Bleeding
- TEMATY SZKOLEŃ
- Drying is too slow
- BULLES SOUFFLURES
- Stripping / Banding
- Fish eyes
- Blistering
- Spider’s web
- ATMOSPHERIC POLLUTION
- CRACKING OR RIPPLING
- Loss of gloss
- POUSSIERAGE
- Rust
- Low gloss
- ADHESION PROBLEMS OF THE CLEAR COAT
- Orange peel
- Clouding
- Pin holing
- Poor adhesion
- SHRINKAGE / EDGE MAPPING
- Poor opacity
- Color offshade
- SOLVENT POPPING
- Whitening
- Runs
- Polish marks
- Sanding marks