The Deep Pleated HEPA Filter is a high-efficiency air purification device that optimizes the filtration area and performance through an ultra-deep pleated structure. It complies with EN 1822 H13-H14 or ISO 16890 ePM1 99.95%-99.995% standards and can intercept ≥99.97% of 0.3μm particles (such as viruses, bacteria, smoke and ultra-fine dust). With large dust holding capacity and low operating resistance as its core advantages, it is specially designed for industrial clean rooms, medical operating rooms and high-end manufacturing environments with high dust loads and continuous operation to achieve long-term and stable purification.
Core structure and technical features
Deep pleat design
Pleat density and depth: 25-50mm deep pleats, 2-5mm pleat spacing, 2-4 times more filtration area per unit volume than standard HEPA (e.g. 100mm thick filter element has an expanded area of 4-6㎡), significantly reducing pressure drop.
Filter material selection:
Glass fiber filter paper: high temperature resistant (≤350℃), chemically inert, suitable for sterilization environment or industrial high temperature scene;
Electret polyester fiber: electrostatic adsorption enhances submicron particle capture ability (MPPS efficiency ≥99.99%), and lower initial pressure difference.
Strengthened sealing and support
Aluminum partition: wavy aluminum foil separates pleats to prevent filter material collapse and withstand high wind speed (≤3.5m/s);
No silicone seal: polyurethane edge sealing or hot melt welding to ensure zero leakage (leakage rate ≤0.005%), in line with ISO 14644-1 clean room standards.
Core performance parameters
Parameters Performance indicators
Filtration efficiency 0.3μm particle interception rate ≥99.97% (H13) to ≥99.995% (H14)
Initial pressure difference ≤200Pa (@ rated air volume), energy consumption is 30% lower than traditional HEPA
Dust holding capacity 150-500g/m² (depending on pleat depth and density)
Temperature resistance Glass fiber type: -50℃~350℃; polyester type: -30℃~80℃
Applicable air volume 500-10,000m³/h (suitable for industrial-grade fans or large clean systems)
Core advantages
Advantages Application value
Long-term economy Ultra-high dust holding capacity design, replacement cycle extended to 3-5 years (low dust scenario)
Energy saving and consumption reduction Low initial pressure difference + pleat optimization, system energy consumption reduced by 20%-40%
Adaptation to extreme environments High temperature resistance, chemical corrosion resistance, suitable for pharmaceutical sterilization, semiconductor etching and other harsh scenarios
Safety and compliance Passed EN 1822, IEST RP-CC001.6 and GMP certification
Typical application scenarios
Medical and pharmaceutical:
Class 100 operating room, sterile preparation workshop, intercept bacteria and particles to ensure surgical safety;
Freeze dryer, sterilization cabinet exhaust system to prevent the spread of biological contamination.
Electronic manufacturing:
Wafer fab photolithography area, chip packaging line, control 0.1μm particles, improve yield by 5%-10%;
OLED screen coating workshop, prevent dust from causing display defects.
Industry and energy:
Lithium battery electrode drying line, intercept metal dust and nanoparticles;
Nuclear power plant control room ventilation, block radioactive aerosols.
Food and aerospace:
Spacecraft assembly clean room, maintain ultra-clean environment;
Milk powder filling line, intercept microorganisms and foreign matter, passed HACCP certification.
Selection and maintenance guide
Selection key
Cleanliness level:
ISO Class 5 (100-level): Select H14 level + aluminum partition plate;
ISO Class 7 (10,000-level): Select H13 level + polyester partition net.
Pollution type:
High humidity/chemical environment: glass fiber + corrosion-resistant frame;
Conventional dust: electret polyester + lightweight aluminum frame.
Intelligent operation and maintenance
Pressure difference monitoring: The recommended replacement threshold is initial pressure difference × 2.5 (usually ≤500Pa);
Cleaning restrictions: cannot be cleaned, and the entire unit needs to be replaced after clogging;
Replacement cycle:
Low dust scenario (laboratory): 3-5 years;
High dust load (electronics factory): 1-2 years.
Technological innovation and trends
AI predictive maintenance: integrated IoT sensors, real-time analysis of particle load and efficiency attenuation, automatic generation of replacement warnings;
Nano coating technology: photocatalytic coating (TiO₂) achieves dual functions of particle interception and VOCs degradation;
Sustainable design: recyclable aluminum frame + bio-based adhesive, carbon footprint reduced by 40%.
Deep pleated HEPA filter redefines the high-efficiency filtration standard with “large capacity, low resistance and ultra-long life”, becoming the cornerstone of industrial and medical clean fields. From chip factories to operating rooms, it protects precision manufacturing and life health with deep technological innovation, and promotes clean air technology towards a smarter and more sustainable future.
