cryocleaning

Cryocleaning, also known as dry ice blasting, is a cleaning method that utilizes solidified carbon dioxide (dry ice) pellets as the abrasive medium. The process involves propelling these pellets at high speeds using compressed air. When the dry ice pellets strike the surface to be cleaned, they undergo a process called sublimation, transforming directly from a solid into a gas. This rapid change in state causes a micro-explosion on the surface, dislodging contaminants without the use of water, solvents, or other chemical agents.

The effectiveness of cryocleaning stems from three primary mechanisms. Firstly, the kinetic energy of the impacting dry ice pellets physically removes debris. Secondly, the extreme cold temperature of the dry ice (-78.5 °C or -109.3 °F) causes contaminants to become brittle and crack, making them easier to dislodge. Thirdly, the sublimation of the dry ice creates a rapid expansion of gas, which further aids in lifting and separating the contaminants from the surface.

This cleaning method is considered environmentally friendly because it produces no secondary waste products, as the dry ice simply turns into carbon dioxide gas, which is naturally present in the atmosphere. Cryocleaning is non-abrasive to most surfaces, meaning it can clean delicate items without causing damage. It is also non-conductive, making it suitable for cleaning electrical components. Applications for cryocleaning are diverse, including industrial cleaning of molds and machinery, historical artifact restoration, paint removal, and food processing equipment sanitation.