- Insufficiently dried UV water coating before UV curing.
- Excessive intensity of UV lamps.
- Increase the temperature in the dryer.
- Increase the speed of the belt in UV dryer.
- Reduce the intensity of UV lamps.
- Extend the drying time of the coating.
- Apply a thinner layer of coating.
- Sand the surface down to the base/substrate.
- Re-apply the lacquer according to the recommendations.