Spray Booth Ceiling Filter is the core filter component in the painting process. It is designed for spray booths or spray workshops and installed in the ceiling area to efficiently capture overspray mist, volatile solvents (VOCs) and fine particles generated during the spraying process, ensuring a clean working environment, the health and safety of operators, and improving the spraying quality and environmental compliance. It prevents pollutants from diffusing in the air or settling on the surface of the workpiece through a multi-layer filtration mechanism, while protecting the rear exhaust system (such as fans and exhaust gas treatment equipment) from blockage or corrosion.
Core functions and features
Efficient interception of paint mist
Adopting a multi-layer composite structure, usually composed of fluffy glass fiber, flame-retardant synthetic fiber or special filter cotton, it effectively captures paint mist particles above 5μm through inertial collision, diffusion interception and other mechanisms, and the filtration efficiency can reach more than 90% (in accordance with EN 779 or ISO 16890 standards). Some designs are combined with water curtains or dry filtration technology to further enhance the separation effect.
Chemical corrosion resistance and flame retardancy
The material has been treated with solvent resistance and oil resistance to resist corrosion by chemicals such as paint and thinners; the flame retardant coating or substrate (such as polyester fiber + aluminum foil) ensures safe operation in high temperature or spark environments, and complies with fire protection regulations such as NFPA 33.
Uniform airflow distribution
The porous structure design of the ceiling filter optimizes airflow uniformity, reduces turbulence, ensures smooth airflow in the spraying area, avoids defects on the paint film surface (such as orange peel, particles), and improves the spraying yield.
Easy maintenance and long life
The high dust holding design extends the replacement cycle, and some filter materials support surface cleaning or flipping (such as pleated filter paper) to reduce consumables costs. The modular installation method facilitates quick disassembly and replacement, reducing downtime.
Application scenarios
Automobile manufacturing and maintenance: body spraying workshop, intercepting primer and topcoat overspray particles.
Furniture and wood coating: Capture wood paint and varnish atomization residue to protect the environment and equipment.
Industrial equipment coating: anti-corrosion coating spraying of engineering machinery and metal components.
Aerospace: High-precision paint mist control in aircraft parts painting.
Selection and maintenance recommendations
Matching spray type: According to the properties of the paint used (water-based paint/oil-based paint), particle viscosity and volatile matter concentration, select anti-sticky filter materials (such as oil-proof treatment) or multifunctional media with composite activated carbon layer.
Air volume adaptation: According to the ventilation times and fan power of the spray booth, calculate the filter area and thickness to avoid excessive pressure difference affecting the exhaust efficiency.
Maintenance cycle: Determine the saturation state of the filter material through pressure difference monitoring or visual inspection. It is recommended to replace it every 1-6 months under normal conditions, and the cycle needs to be shortened under high-load conditions.
The ceiling filter of the spray booth has become a key link in balancing the painting quality, environmental emissions and operating costs through precise filtration and systematic design, providing efficient and safe air purification solutions for the modern spray industry.
