Dusting phenomena
In general, dusting phenomena occur when a glaze is marked by a low cohesion after the application by means of traditional airless spray systems. This lack of cohesion develops not only between the glaze’s particles but also between the glaze and the raw ceramic support.
This kind of glaze, that we could define as fragile, is easily removable from the ceramic surface, especially when it undergoes to the mechanical solicitations that take place along the production line. The problem is particularly clear after the evaporation and draining process, when the glaze has definitely lost its solvent part (the liquid component, that is water).
The problem can be handled taking several actions. The easiest and most common solution is the use of specific binders, able to form a cross-linking net between the glaze's solid particles.
