ABSTRACT
Spraying permits the rapid coverage of surfaces. In addition, drying time is usually reduced. Compressed-air atomization, also commonly referred to as conventional spraying, is the most widely used spray method for adhesive application. The removal of contaminants from compressed air is important in the interests of safety and protection against damage to the spray equipment and to the end product. It is important for compressed air to be cooled, dried, and cleaned before it is distributed for use. Filters, commonly referred to as oil and water extractors, are placed close to the actual spraying operation. The more effective filters have a combination of baffle-type elements to remove the solids and a filter element (of either porous bronze or an absorbant material) to collect the finer particles. Pressure feed spraying delivers material under pressure to the spray gun either by a pressure container or by a material-handling pump.
