Loss of gloss
Description of problem:
The gloss of a refinish is evaluated according to the sharpness
of the reflected image. A smooth surface reflects like a
mirror. Any loss of gloss is generally due to the formation of
irregularities in the paint film which lead to the scattering of
the reflected light and that means a loss of sharpness in the
image formed at the surface.
Causes:
– See section on cracking.
– See section on moisture blisters.
– High film thickness.
– Too much air humidity during application.
– Solvent sensitive substrate.
– Incorrect mixing ratio or contaminated hardener.
– Use of unsuitable thinner.
– Insufficient airflow in the spray booth.
– Interrupted baking.
Preventive measures:
– Follow application recommendation.
– Close hardener cans firmly after use.
– Ensure sufficient airflow in the spray booth.
– Do not interrupt baking cycle.
Remedy:
– Sand and polish.
– Sand and repaint.
- 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