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Why Dry Ice?
Because
it is currently the only environmentally friendly way to clean industrial
surfaces without abrasion or the use of chemical solvents.
Because
the list of chemicals and solvents that cannot be used or cannot
be disposed of without costly restrictions will increase.
Because
production machinery and planning methods will improve the just
in time capabilities of manufacturing plant, and on-line cleaning
will be required to avoid costly cleaning stoppages.
Where?
On
practically all surfaces that are strong enough to resist the forces
applied to the surface by the impingement of the compressed air
and the dry ice particles, and the sublimation force of the dry
ice. The sublimation force, perhaps unexpectedly, can be the stronger,
and can affect porous weak surfaces such as softwood, plaster based
compounds and materials containing a high percentage of soft filler
and/or colorant, as found in low cost plastic mouldings.
Where
conventional cleaning causes unwanted changes to dimensions and
surface finish.
Where
conventional cleaning introduces unwanted moisture, chemical attack
or is a safety hazard.
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