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Dry ice cleaning removes contaminants differently depending on the substrate — a compression tension wave pops brittle coatings like paint or rust off, while a flushing action shifts viscous coatings such as oil, grease or wax.
As dry ice strikes the surface it instantly converts to CO2 gas and returns to the atmosphere. CO2 is a naturally occurring trace gas, so dry ice cleaning is best done in a ventilated, open space.
During dry ice cleaning, contaminants are removed by blasting. As the contaminant is a solid it doesn't disappear like the dry ice — instead it is relocated to where it can be better dealt with.
Dry ice blasting does not require equipment to be uninstalled or disassembled for cleaning — meaning downtime is measured in minutes, not hours or days.