Gres Porcelain stoneware is a ceramic with a compact, hard, coloured and non-porous body. The word “gres” means that the ceramic body of the tile is extremely vitrified, that is to say compact, hence the exceptional great resistance. Gres Porcelain tiles are acquired by mixing raw materials such as top quality white clays, quartz and feldspar in wet grinding ball mills. After grinding, a clay-based suspension of these materials called “slip” is fed out of the mill then dried by spray-drying. Pressing this fine dust with limited moisture. Advanced hydraulic presses are used with a specific pressing power exceeding 300 kg/cm2 in order to obtain a compact gres body. After drying, tiles are coated and decorated with glazes to make them aesthetically pleasant with top-class specifications. The result is a lean clay body, little refractory, fired in a kiln (at 1200-1400 C°) until it reaches non-porous vitrification and a complete water-proofing. The resulting product is normally a medium-to-low porosity (3% to 6%) tile, Tile’s flexural strength average value: 30N/mm2.
Amongst the most significant features of Gres porcelain stoneware, there is also the high abrasion resistance, which means the resistance of the surface against the action related to the movement of bodies, surface or materials in contact with it