
Discoloration or Floating Particles
When the paint comes in contact with floating particles in the painting area, discoloration is a possibility. Discoloration can be caused by other factors/reasons too.
Possible Causes |
Solutions |
Vapours or Fumes are present in Painting Area | Check for the presence of ammonia or amine fumes from adhesives or any other sources. |
Reaction of Aluminium and Steel parts in the spray equipment with Water Borne or Acid Cure | Use stainless steel or solvent resistant plastic parts and liners in spray equipment. |
The pail lining comes off or the drum is improper |
• Strain the paint through a cheese cloth or a fine filter. • Ensure no contaminants are present in the filter. |
Presence of Old Nitrocellulose Products | Discard and use fresh material only. Since, it can become amber on aging in the can and react with steel. |
Chemical Reaction to Surface Treatments |
• Check the pH of the surface. • If it is in the acidic range, it can react with the alkaline materials. |