Hydro lacquers are coating systems whose binding agents are finely distributed in water. These can be emulsions (liquid/liquid) or dispersions (solid/liquid).
Drying or, as may apply, formation of the film takes place after application by dispersion particles moving together and fusing while the water evaporates.
In general, optimum film formation only takes place at temperatures over 16°C.
Due, to a greater or lesser extent, to the distinctive characteristics of the Hydro lacquer, compared to other coating systems, sufficient cooling is to be ensured both before sanding and unstacking.