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EVALUATION OF INNOVATIVE PAINTING PROCESSES
Citation:
Pandalai, K. AND G. Pandalai. EVALUATION OF INNOVATIVE PAINTING PROCESSES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-93/077.
Description:
The report gives results of an evaluation of two novel spray painting techniques that may decrease volatile organic compound (VOC) emissions associated with the application of surface coatings. ne technique uses supercritical carbon dioxide (CO2) as a solvent and a propellant to deliver and disperse the coating. he second system utilizes pressurized nitrogen to deliver a constant-now very soft spray through the gun nozzle. his technology is called the Ultra Low Volume (ULV) process. he CO2 system encountered problems in delivering urethane topcoats and was eliminated from field testing. ata were gathered on VOC emissions, paint consumption, coating thickness, and workplace exposure during application of an epoxy primer and a silica-filled chemical agent resistant (CARC) topcoat to a fleet of trucks at Warner Robins AFB, GA. he ULV process was compared to a conventional air atomizing gun system. esults revealed a 50% decrease in VOC emissions, and a 30% decrease in paint consumption when using the ULV system. lso, no increase in exposure was detected when compared to the conventional gun.