Paints & Coatings Resource Center

Ask the Expert Question-and-Answer Archive

by Ron Joseph

December, 2002

Spray Gun Paint Particulate Size Distribution

Q. I'm looking for data on particule sizes of paint overspray from both convention and electrostatic spray methods. I've seen a bell curve before, but cannot locate one at present. Can you provide data? Thank you.

A. I have also seen some bell-shaped curves for particle size distribution from HVLP and conventional air atomizing spray guns. The only company that I assume might have this information is ITW-Ransbug (for electrostatic) and ITW-DeVilbiss for non-electrostatic spray guns. If my memory serves me correctly, it was ITW-DeVilbiss (formerly DeVilbiss) that did this research. You might want to speak to Roger Cedoz at that company, located in Toledo, OH.

Please let me know what you find as I too am curious.

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