FREQUENTLY ASKED QUESTIONS

What is dry ice?
What is Dry-Ice Blasting?
How safe is it?
Is Dry-Ice blasting bad for the environment?

How does Dry Ice Blasting work?

Can Dry Ice blasting be used in the Printing and Packaging Industry?
Does the process damage the underling surface?
Can Dry-Ice blasting be used on electronics
Is Dry-Ice toxic
Is it okay to blast in an enclosed area?

What is dry ice?
Dry Ice is carbon dioxide in solid form. It can be produced as pellets or blocks of various sizes.
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What is Dry-Ice Blasting?
Dry Ice blasting is a revolutionary blasting method in which dry ice pellets replace traditional blasting materials like sand, water glass and plastic. In contrast to the sand blasting process the dry-ice process leaves no secondary waste material. The only waste to be disposed of is the dislodged coating, which is easily swept or vacuumed from the floor.
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How safe is it?
Like any form of blasting care is needed, however compared to traditional blasting methods, dry ice is very safe. The process is dry and non conductive and is therefore suitable for use on electric motors and electric circuitry. CO2 is 40% heavier than air therefore in an open shop environment; existing ventilation is sufficient to prevent CO2 build up.
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Is Dry-Ice blasting bad for the environment?
One of the many advantages to using dry ice for cleaning is that it is neutral towards the environment.
The pellets used in this process are a byproduct created during the manufacture of fertilisers. The use of dry ice cleaning does not contribute towards Carbon Dioxide being emitted into the atmosphere but it does put to use gas already created and unlike solvent cleaning, there are no hazadous liquid wastes or toxic fumes.
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How does Dry Ice Blasting work?
Dry ice pellets are accelerated in a jet of compressed air and strike the coating to be removed at velocities up to the speed of sound.

  • Stage 1 – Thermo Shock
    As a result of the sudden and intense temperature change on the surface the coating or impurity contracts.
  • Stage 2 – The cracking
    As a result of the contraction and drop in temperature, the layer of contamination becomes brittle and cracks.
  • Stage 3 – A combination of the continued impact of the CO2 pellets and the pellets instant change from solid to gas detach the dirt coating

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Can Dry Ice blasting be used in the Printing and Packaging Industry?
Absolutely Yes!
Its an extremely effective way of removing hard ink, adhesives, powder and paper dust. On printing machines gripper bars, that usually take hours to clean, can be cleaned far more quickly and more effectively with dry ice cleaning.

With packaging machinery the process removes adhesive residue and associated dirt improving line flow considerably and help reduce the incidence of unexpected shutdown. It can also be used to clean adhesive nozzles and chain drives giving large savings by reducing the need for replacement parts.
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Does the process damage the underling surface?
For the most part there is no surface damage but it does depend on the material in question. Most applications are production equipment and so on (cast iron, steel, etc) so there is no damage at all. We also have a great deal of success with softer substances such as plastic, wiring, copper and fabrics but these must be reviewed on an individual basis.
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Can Dry-Ice blasting be used on electronics
Dry ice blasting can be used to clean dirt and soot from electronics without making them wet or using chemicals.
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Is Dry-Ice toxic
Dry Ice is non-conductive and non-abrasive. Dry ice vaporises on contact with treated surfaces. Moist coatings such as oil and grease are carried away with the compressed-air jet, leaving surfaces clean and dry.
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Is it okay to blast in an enclosed area?
Yes, with proper ventilation.
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