The booth structure is the main physical housing of an electrostatic powder coating system, providing containment for the powder application process, supporting ventilation and filtration systems, and ensuring operator safety and environmental compliance by preventing powder escape. It is typically fabricated from powder-coated steel, stainless steel, or aluminum, with material thickness ranging from 1.5 to 3.0 mm depending on structural and corrosion requirements. The structure is designed to maintain controlled airflow, either downdraft or crossdraft, to carry overspray powder to the recovery system while providing safe access for operators and parts handling. Key parameters include working pressure (1.0–1.6 MPa), air flow rate (12,000–24,000 m³/h), filter efficiency (99.5–99.9% per ISO 16890), operating temperature (-10 to 50 °C), relative humidity (40–70% RH), electrical supply (380–480 V AC, three-phase, 50/60 Hz, per IEC 60038), power consumption (5.5–15 kW), ingress protection (IP54–IP65 per IEC 60529), overall dimensions (3,000–12,000 mm length), and weight (800–5,000 kg). These values are reference ranges and must be verified for the specific model and application. The booth structure interfaces with ventilation, filtration, powder recovery, and conveyor systems. When selecting a booth structure, verify the required air flow for overspray capture, filter class for emission limits, and material compatibility with the powder and cleaning agents. Maintenance signals include increased pressure drop across filters, visible powder leakage, or corrosion. Failure boundaries include structural deformation, loss of seal integrity, or inadequate airflow. Always confirm model-specific values and standards with the legal manufacturer or supplier.
The booth structure acts as a sealed or semi-sealed chamber where electrically charged powder particles are sprayed onto grounded workpieces. It is designed to maintain controlled airflow (typically downdraft or crossdraft) to carry overspray powder to the recovery system, while providing safe access for operators and parts handling. The structure's geometry and material selection influence airflow patterns, powder containment, and ease of cleaning. Proper grounding of the structure is essential to prevent static buildup. The booth must be operated within specified temperature and humidity ranges to ensure powder fluidization and filter performance. Regular inspection of seals, panels, and airflow is necessary to maintain containment and safety.
