Surface Fine Treatment

Surface fine treatment is a process which takes place at the polishing line just after the calibration and before the final polishing, because at that point small holes and natural stone defects are becoming more visible. During this process the slabs or tiles after the calibration are entering into an Infrared tunnel oven that will dry them and evaporate the humidity hidden inside the material. Except natural stone industry, this process is used also to concrete products and ceramic tiles.

Two chemical products can be used in this process rapid Polyester stucco or Ultraviolet sensitive stucco.

  • The polyester stucco is cured by a second Infrared tunnel and the material can be polished. In this case the stucco can have some color mixture or powder of the same material in order to close big holes and remain invisible.
  • The ultraviolet stucco is cured by the Ultraviolet radiation oven, remains transparent and is suitable for any material.

The length of the oven is proportional to the speed of the polishing line in order to have dry material before the stucco application and the correct time that will remain under radiation.