Byers Bush Powder Coating Inc.
 

PVDF Powder Coating vs. PVDF Liquid Coatings

Economic Considerations
POWDER COATING LIQUID PAINTING
Average material
efficiency up to 95% of material sprayed.
Average material efficiency is only 35%.
Overspray may be reclaimed. Overspray can not be recovered and becomes hazardous waste
No loss of powder material due to evaporation of solvents Evaporation of solvents or VOC’s emitted can cause material loss and dry film loss of 58% to 68% when spray applied
Solids by Volume ASTM D 2697 100% Solids by Volume ASTM D 2697 can range from 32% to 42%
One coat application typically. Coastal areas require primer. Three and four coat systems are typical.
Curing temperatures in oven are lower and less passes through oven required Higher Temperatures and more passes through oven
Lower Applied costs per square foot or linear foot Higher applied cost per square foot or linear foot
Processing and Handling Time Faster than liquid Processing and Handling Time Slower than powder

Environmental Considerations
POWDER COATING LIQUID PAINTING
Powder Coatings are solvent-free. All liquid coatings contain solvents including 100% solids liquid coatings.
No hazardous waste according to ‘Resources Conservation and Recovery Act (RCRA)’. Contain VOC’s of (Theoretical) ASTM D 3960 4.4 to 4.8 pounds per gallon
Overspray may be reclaimed. Overspray cannot be reclaimed
No Hazardous waste generated Overspray that comes in contact with paint filters, PPE, etc. has to be disposed of accordingly to local laws as Hazardous Waste
No Volatile Organic Compounds VOC (Theoretical) ASTM D 3960 4.4 to 4.8 pounds per gallon and higher.
Environmentally Friendly Not Environmentally Friendly
Non-hazardous to spray operator Hazardous to spray operator
Processing and Handling Time Faster than liquid Processing and Handling Time Slower than powder


Mechanical Considerations
POWDER COATING LIQUID PAINTING
Application of a single coat can produce a thickness of 2-4 mils (50-100 µm). Application of a single coat can only produce film thickness of 1.2 mils (30 µm) or less
Dry Film Thickness above 2.5 mils has excellent mechanical properties Dry Film Thickness above 2.5 mils the mechanical properties will decline
Optimum results after application of single coat. Multiple coats are required to achieve required firm thickness.
Excellent mechanical properties because of “Crosslinking process / polymerization.” “Inferior” mechanical properties.
Excellent edge coverage – less touch-up cost. Poor edge coverage.

Typical Powder Coating Applications
Architectural Applications Construction Industry Lighting Fixtures Park Furniture
Playground Equipment Garage Doors Stadium Seating Fencing/Railing
Defense Industry Automotive Equipment Marine Industry Agriculture Equipment
Sports Equipment Recreational Equipment Lawn/Garden quipment Window/Door Frames
 
 
Address:
1300 Fewster Drive, Mississauga, ON L4W 1A4
 
Tel: 905-625-4334
Fax: 905-625-9862