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#31 Ceramic glaze application & technical defects: the TV effect

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Speaking of ceramic glaze applications and technical defects, one of the strangest and most interesting is the "TV effect". It consists of a preferential migration of the glaze towards the perimeters of the tile that produces in those areas a thickening of the glaze. The…

#30 Excessive viscosity of the slip: causes & remedies

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Viscosity (or viscous friction coefficient) measures a substance's attitude on generating friction between its layers. In other words, it defines the fluid resistance to its proper flow. The viscosity value of the barbottina can sometimes rapidly and suddenly change and in case…

#29 Glazes and engobes bacterial degradations: technical & aesthetic consequences

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All process water involved in ceramic production, both tap and well waters, usually contains a variable percentage of bacteria. And the same applies to inorganic raw materials used in the grinding process to produce the semi-finished products that will be later applied along the…

#28 Digital inks for ceramic production: what do we need to know?

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In the last few years the ceramic industry has been rapidly evolving thanks to the progressive digitalization of the some of the processes. In this regard, the digital ink decoration system plays one of the most important role. What is a digital ink for ceramic? What is its…

#27 Ceramic glazes, surface tension & chemicals

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Surface tension is the tendency of liquid surfaces at rest to shrink into the minimum surface area possible. In general, to get a proper glaze application, it is always important to work on the fluid's surface tension by decreasing or, more generally, adjusting it, until you…

#26 Ceramic slips & rheological behavior

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In general, wet grinding systems as well as atomization systems, offer the best performance and the best production results only when chemical and physical features of slips are constant for the duration of entire process. More precisely, the optimal process is developed when the…