Product Description
PET Needle-Punched Air Filter Media is a robust, felt-like filtration material manufactured through a mechanical needling process that entangles polyester fibers into a dense, three-dimensional web. This needled structure creates a highly porous fabric with exceptional depth-loading characteristics, making it particularly effective for capturing coarse particles in high-airflow industrial environments.
The media is supplied in rolls, allowing to cut and size it according to specific filter production requirements. Needle-punched polyester fabric accounts for a significant portion of filter media used in industrial air filtration applications. The mechanical bonding process imparts excellent tensile strength and tear resistance, enabling the media to withstand rigorous pulse-jet cleaning cycles and turbulent airflow without structural failure . Its open, fibrous construction promotes efficient dust cake formation, which enhances overall filtration performance over time.
| Filter Material Specifications | |
| Filter Type | Needle Punch NonWoven Fabric |
| Filter Class (EN 779) | G2, G3, G4 |
| Main Material | Polyester Fibers (PET) |
| Flammability Rating | F1 (DIN 53438), B1(GB/T 17591-2006) |
| Average Weighting Efficiency | 95% (ASHRAE 52.1-1992) |
| Final Resistance | 250Pa (Suggestion) |
| Dust Holding Capacity | 300, 400, 500, 600 g/m² |
| Humidity Resistance (Relative Humidity) | 100%RH |
| Model | Size | Thickness (mm) | Weight (g/m²) | Rated Air Velocity (m/s) | Initial Resistance (Pa) | Rated Air Flow (m³/h) |
| RT-ZC03 | 1.25m×50m | 3 | 150 | 1.5 | 20 | 5400 |
| RT-ZC05 | 1.25m×50m | 5 | 200 | 1.5 | 25 | 5400 |
| RT-ZC08 | 1.25m×50m | 8 | 320 | 1.5 | 35 | 5400 |
Note: other specifications can be customized according to requirements
Product Features
PET Needle-Punched Air Filter Media offers significant advantages for demanding pre-filtration applications.
Depth-Loading Filtration – The needled structure traps particles throughout the media thickness, not just on the surface, maximizing dust-holding capacity and extending service intervals in HVAC pre-filtration stages.
Exceptional Mechanical Strength – The mechanical entanglement of fibers provides high tensile strength in both directions, ensuring durability under high-velocity airflow and pulse-jet cleaning .
Low Initial Resistance – Optimized porosity ensures minimal pressure drop at start-up, reducing fan energy consumption and operational costs for AHU systems.
Moisture Resistance – PET fibers do not absorb water or support microbial growth, making this needle-punched polyester filter fabric suitable for humid environments and applications with condensation exposure .
Available in Roll Form – Supplied in rolls for flexible converting, enabling filter manufacturers to cut panels or pads to custom specifications.
Economical Pre-Filtration – As a G2-G4 class media, it provides cost-effective protection for downstream HEPA filters, extending their service life significantly.
Product Applications
PET Needle-Punched Air Filter Media serves diverse industrial and commercial filtration needs.
Industrial Dust Collection Systems – Used as pre-filter media to capture coarse dust particles ≥5μm, protecting more expensive final filters from premature loading .
Commercial HVAC Systems – Deployed in office buildings, shopping malls, and hospitals as pre-filtration in AHU units, protecting cooling coils and supply fans from lint and airborne debris.
Manufacturing Facilities – Applied in factories with high dust loads, such as woodworking, textile, and food processing plants, where durable filtration media is required to handle heavy particulate concentrations.
Ventilation Systems with High Humidity – Used in greenhouses, swimming pools, and coastal facilities where moisture-resistant filtration is essential for reliable operation.
Air Conditioning Pre-Filtration – Installed in packaged rooftop units and unitary equipment to capture coarse dust and extend the life of downstream medium-efficiency filters .
