How does dry ice cleaning work?
Dry ice cleaning works on the principle of 3mm dry ice pellets entering a jet of compressed air, propelled from the gun at supersonic speed (>800mph) and then fired at the surface to be cleaned.
The abrupt cooling of the surface causes a thermal shock and produces fine cracks in the top layer.
The dry ice pellets penetrate these cracks; lift the contaminant from the surface and return to the atmosphere as CO² gas leaving only the contaminant behind.
