BVF Bacterial Filtration Cotton/BFE Microbial Filter Membrane/Electret Electrostatic Filter Media/ Spirometer Filter Cotton/ Ventilator Filter Media
Through selection of synthetic fibers subjected to needle-punching and specialized post-treatment processes, polypropylene fibers acquire permanent electrostatic charges. This creates an electrostatic field that induces charges on fine particulates. Via Coulombic attraction between opposite charges, dust is adsorbed onto the fibers, achieving enhanced filtration efficiency and precision with superior cost-performance ratio.
| Gram（g/m²） | Thickness（mm） | Filtration Efficiency（32L） | Pressure Drop（Pa） | Air Permeability（L/m²S） |
| 35 | 0.4 | ≥60 | ≤2 | ≥5500 |
| 45 | 0.6 | ≥61 | ≤3 | ≥4500 |
| 55 | 0.55 | ≥62 | ≤4 | ≥3000 |
| 70 | 0.6 | ≥63 | ≤5 | ≥2500 |
| 90 | 0.9 | ≥64 | ≤6 | ≥2000 |
| 120 | 1.2 | ≥95 | ≤7 | ≥1500 |
| 150 | 1.4 | ≥98 | ≤8 | ≥1000 |
| 170 | 1.5 | ≥99 | ≤9 | / |
| 210 | 1.9 | ≥99.5 | ≤10 | / |
Relies on electrostatic adsorption for dust filtration.
The needle-punching process creates a fluffy, three-dimensional structure with high porosity, significantly reducing filtration resistance.
The fluffy texture, abundant three-dimensional needle holes, and high porosity all facilitate dust retention in the filter material.
Made of chemical fibers, it can be easily hot-rolled or ultrasonically composed with conventional spunbond nonwovens and melt-blown fabrics.
1. Disposable Medical Filters: spirometer filter pads/anesthesia machine filters/ventilator filter media
2. Oxygen Systems: molecular sieve oxygen concentrator trains
3. Air Purification: HEPA-grade air purifiers/HVAC filter inserts
4. Respiratory Protection: PM2.5 anti-smog face cover
