Dry ice blasting uses compressed air to accelerate solid carbon dioxide (CO2) dry ice pellets to literally strip industrial equipment surfaces of a multitude of residues, including ink, glue, paint, food, rubber, mold release agents, dirt, grease, oil, and numerous other contaminants.
Dry ice blasting is similar in principle to sand blasting. Instead of sand, dry ice blasting uses high-density dry ice pellets, which are propelled onto a surface using compressed air.
Unlike sand blasting, dry ice blasting is non-abrasive. When dry ice pellets hit a surface, such as a metal part contaminated with oil and grime, the dry ice pellets immediately sublimate [change in form from solid to gas].
The rapid expansion of the solid dry ice into gas causes a tiny "explosion" which loosens the contaminant [in this case, the oil and grime]. The extremely cold temperature [-109 degrees Fahrenheit] of the dry ice causes the bond of the contaminant to the metal part, in this example, to weaken. This loosens the contaminant, freezes it in the process, and causes it to release from the metal part.
Dry ice blast cleaning leaves no residue like sand blasting, and it leaves no toxic waste as solvents can. It lets you skip clean-up problems associated with other cleaning methods.