Mini-Pleated HEPA Filter is a high-efficiency air purification device designed for space-constrained scenarios. It achieves a large filtration area in a compact volume through a micro-pleated structure (Mini-Pleated), meets EN 1822 H13-H14 or ISO 16890 ePM1 95%-99.95% standards, and can intercept ≥99.97% of 0.3μm particles (such as viruses, bacteria, smoke and ultra-fine dust). It is widely used in medical equipment, laboratory instruments, electronic clean rooms and high-end commercial spaces, providing precise solutions for small air volume and high cleanliness requirements.
Core structure and technical features
Micro-pleated design
Ultra-dense pleats: The filter material is densely arranged with 2-5mm narrow pleats, and the filtration area per unit volume is increased by 3-5 times (such as the unfolded area of 100mm thick filter element is 2-3㎡), breaking through the volume limit of traditional HEPA.
Material selection:
Glass fiber: high temperature resistance (≤350℃), chemical inertness, medical-grade sterility assurance;
Electret polyester fiber: low resistance and high efficiency, electrostatic adsorption enhances the ability to capture submicron particles.
Seal and frame
Aluminum or ABS frame: 20-100mm thick, suitable for compact air ducts (such as clean workbenches, PCR instruments);
Glue-free sealing: laser welding or hot-melt edge sealing technology to ensure zero leakage (leakage rate ≤0.01%).
Core performance parameters
Parameters Performance indicators
Filtration efficiency 0.3μm particle interception rate ≥99.97% (EN 1822 H13 standard)
Initial pressure difference ≤120Pa (@ rated air volume), energy consumption is 20% lower than traditional HEPA
Dust holding capacity 50-150g/m² (depending on thickness and pleat density)
Temperature resistance Glass fiber type: -50℃~350℃; polyester type: -30℃~80℃
Applicable air volume 50-500m³/h (suitable for small fans or built-in air ducts of equipment)
Core advantages
Advantages Application value
Extreme space utilization The volume is 50% smaller than traditional HEPA, suitable for narrow equipment or confined spaces
High efficiency and low resistance Electrostatic electret technology + pleat design, balancing efficiency and energy consumption
Long life Dust holding capacity increased by 30%, replacement cycle up to 2-4 years (low dust environment)
Safety and compliance Passed ISO 14644-1 (clean room), FDA 21 CFR (medical) certification
Typical application scenarios
Medical and life sciences:
Built-in filtration in biosafety cabinets, PCR instruments, and centrifuges to prevent aerosol contamination;
Purification of the outlet of ventilators and anesthesia machines to ensure patient safety.
Electronics and optics:
Chip detection equipment, laser engraving machine air ducts, intercepting nano-level metal dust;
Optical lens assembly table, maintaining a local Class 100 clean environment.
Business and home:
High-end air purifiers, core filters of fresh air systems, remove PM0.1;
Constant humidity and clean system of museum display cabinets, protecting cultural relics from particle erosion.
Selection and maintenance guide
Selection points
Cleanliness level:
ISO Class 5 (Class 100): Select H14 (efficiency ≥ 99.995% for 0.3μm);
ISO Class 7 (Class 10,000): Select H13 (efficiency ≥ 99.97%).
Chemical resistance:
Strong acid/solvent environment: glass fiber + aluminum frame;
General scenario: electret polyester + ABS frame (lightweight).
Intelligent maintenance
Pressure difference monitoring: recommended replacement threshold ≤250Pa (initial pressure difference × 2);
Non-cleanable: disposable design, need to be replaced as a whole after clogging;
Replacement cycle:
Medical/laboratory: 1-2 years;
Commercial/home: 2-4 years.
Technological innovation and trend
Nanofiber composite: surface covered with nanofiber layer (diameter ≤0.1μm), PM0.1 filtration efficiency increased to 99.99%;
Intelligent IoT: built-in pressure difference sensor and Bluetooth module, real-time synchronization of filter life to mobile phone APP;
Green material: biodegradable polyester fiber (PLA-based), reducing plastic pollution by 30%.
Mini pleated HEPA filter reshapes the precision purification standard with “small size, high efficiency and long life”, becoming the “invisible guardian” of medical, electronic and high-end equipment. From the laboratory to the home, it breaks through space limitations with innovative technologies and provides the ultimate solution for micro-environment cleanliness.
