The Paint Stop Filter is an indispensable core filtration device in the painting process. It is designed to efficiently capture overspray paint mist, solvent volatiles (VOCs) and fine particles generated during painting operations. It is usually installed on the top or rear filter section of the paint spraying room. Through physical interception, adsorption and chemical stabilization, it prevents pollutants from spreading to the working environment or exhaust system, protects the health of operators, improves the quality of spraying, and ensures compliance with the strict requirements of environmental regulations on exhaust emissions.
Core functions and advantages
High-efficiency paint mist separation
The multi-layer gradient filtration structure (such as coarse fiber layer + high-efficiency dense layer) combined with material properties (glass fiber, flame-retardant polyester or composite filter paper) can intercept paint mist particles of 0.5-10μm, with a filtration efficiency of 90%-99% (in line with EN 779 or ISO 16890 standards), significantly reducing the accumulation of paint residues in pipes and equipment.
For sticky paint mist, the surface is treated with oil-proof, siliconized or anti-stick coating to reduce the risk of filter material clogging and extend service life.
Chemical tolerance and safety
The substrate is resistant to solvents, acids and alkalis, and can be in contact with chemicals such as paint and thinners for a long time to avoid performance degradation caused by material degradation.
Flame-retardant design (such as adding aluminum foil layer or flame-retardant coating) complies with fire protection standards such as NFPA 33, reducing safety hazards caused by high temperature or sparks.
Optimize airflow and energy saving
The pleated, honeycomb or bag structure greatly increases the effective filtration area, and the initial pressure difference is as low as 50-150Pa, maintaining uniform and stable airflow in the paint spraying room and reducing fan energy consumption.
High dust holding design extends the replacement cycle and reduces frequent maintenance costs.
Environmental protection and economy
Dry filtration does not require a water circulation system, avoiding wastewater treatment problems and reducing resource consumption.
Modular design supports quick replacement, and some washable or recyclable filter materials (such as metal mesh pre-filter layer) further reduce consumables costs and solid waste generation.
Typical application areas
Automobile manufacturing and maintenance: intercepting primer and varnish overspray in the body spraying line and repair workshop, protecting the exhaust system and exhaust gas treatment equipment.
Industrial equipment coating: electrostatic spraying or high-pressure airless spraying of engineering machinery and metal components to prevent paint mist from polluting the workshop environment.
Furniture and wood processing: paint mist recovery of wood paint and UV paint spraying to reduce dust and VOCs emissions.
Electronics and aerospace: particle control in the coating of precision parts to avoid contamination of sensitive components.
Selection and maintenance recommendations
Adaptive spraying process:
Water-based paint: select hydrophobic filter material (such as polyester fiber composite layer) to prevent the humid environment from causing the filter material to clog.
Solvent-based paint: chemically resistant materials (such as glass fiber) or composite activated carbon layers are preferred to enhance VOCs adsorption capacity.
System parameter matching:
According to the air volume (m³/h), paint mist concentration and particle viscosity of the spray booth, select the filter material thickness (20-100mm) and structure (flat/pleated) to ensure the balance between pressure difference and filtration efficiency.
Intelligent maintenance strategy:
Install a pressure difference sensor to monitor the filter element status in real time. The recommended replacement threshold is 2-3 times the initial pressure difference (regular replacement cycle 1-6 months).
Pre-primary filters (such as metal mesh or synthetic fiber pre-filters) can intercept large particle impurities and extend the life of the main filter element by more than 30%.
With high-efficiency purification and low-consumption maintenance as its core value, paint mist interception filters have become the key technical equipment for the modern coating industry to achieve green production, energy saving and consumption reduction, helping enterprises to meet stringent environmental protection regulations and sustainable development goals while improving spraying quality.
