Digital glaze application by means of non piezoelectric systems

Name: Goodpods
Rating: 4.8 (3721 reviews)

02/20/23 • 11 min

Apparently invisible. Chemistry in ceramics.

In the field of ceramics, glazes are usually applied on the raw tile by means of spray “analogical” systems (airless application system).
Nevertheless, recently some new application machines have appeared on the market.
They cannot be defined as completely digital but they cannot even be comparable to traditional analogue techniques. How do they work?
What kind of features should the glaze have to be properly applied?

Previous Episode

Mechanical resistance of green and dried ceramic material

Along the ceramic production line that from the pressing stage leads to the kilns, raw tiles (still delicate and fragile) often undergo to stresses on the conveyor roller that can compromise them.
Chipping or breakage may occur if no preventive action is taken to increase the material's mechanical resistance.

What does the mechanical resistance value mean?
How do chemicals used to increase it work?
What measures can be taken to achieve better results?
Temporary binders surely have the most important role but what should be taken into account to emphasize their action?

Next Episode

Dry grit application by means of analogical systems

In ceramic production, grit applications are mainly "wet applications" made by means of airless spraying systems.
A kind of application that involves a huge amount of water within which the grit is suspended. Nevertheless, in recent time a different application method is spreading.
We could define it as a dry method that, however, has nothing to do with digital systems (that involve, instead, the use of digital glues together with a dry application of grit).
Without forcing the words, in this case we could talk about "analogue dry application of grits".
How does this application work and what sort of features must the grit have to properly develop the process and to produce high-performing ceramic tiles?