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The manufacturing process is a careful selection of a combination of natural raw materials: white clays, feldspar, quartz and kaolin from different countries around the world.

Using an automated weighing system, exact amounts of these raw materials are measured out, in the correct percentages as per the corresponding formula used by PAMESA.

The raw materials are then wet milled. Afterwards spray-drying systems are used to evaporate the water so as to control the level of humidity and size of the granules. These granules are known as spray-dried powder.

The resulting powder is taken to a hydraulic press, where it is pressed into unfired tiles at high pressure. Any relief work on the tiles is also produced during this stage.

In the case of decorated tiles, a variety of decorative techniques are then used, depending on the end appearance.

Subsequently the tiles are fired. The properties of the material and the firing conditions (a high temperature of about 1200ºC) combine to bring about permanent physical and chemical changes and a vitreous phase.

During the firing stage, a series of reactions occur, leading to a big reduction in porosity and linear shrinkage. This sintering is the main transformation that the tiles undergo during the manufacturing process and the one that gives them their high technical performance.

The end product can be subjected to an additional phase in which the surface of the tiles is polished using mechanical polishing systems.

Diamond rollers grind the surface of the tiles and then a set of abrasive teeth on rotating wheels burnish them at high speed, giving them a polished surface and incredible glossy shine.

Finally, the sides of the tiles are rectified and bevel-edged to ensure constant dimensions and an improved appearance.

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