How does cleaning with dry ice work?
The dry ice pellets
drop from the blasting system ice hopper into a dispensing
device and are then accelerated by com-pressed air. The
blasting medium is blasted through precise high-performance
nozzles onto the surface being cleaned by compressed air.
The sudden cooling (-79 °C) on the surface renders the layer
of soiling brittle, releases it from the subsurface (thermal
effect), and it will then be completely removed by the
subsequent dry ice pellets (mechanical effect). Unlike the
familiar sand blasting method, this cleaning method does not
damage the surface. The pellets collide with the surface
being cleaned at -79°C and subliminate completely, with only
the removed soilings will have to be disposed of. There is
no need for costly and time-consuming disposal of the
The DIS Dry
Ice Systems high-tech blasting systems are either operated
pneumatically or electro-pneumatically.