Weston Nonwoven: Engineering Excellence in N95 Melt Blown Fabric
Melt blown non-woven fabric is an important material used in masks, air filters, wiping products, and composite fabrics. It is a non-manufactured non-woven fabric with polypropylene as the main raw material. Its filtration efficiency is biggest one of the factors that affect product prices.
What is the filtration efficiency of melt blown non-woven fabrics?
Filtration efficiency refers to the filtration efficiency of melt blown. Because melt blown has the characteristics of filtering dust, particles, dust, pollen and so on. The filtration level has terms such as N, BFE, VFE, KN, FFP, etc. The melt blown level and filtration efficiency are mutually related. A good melt blown grade will bring a good filtration efficiency, and a bad one will do the opposite.
There are currently several grade of filters Weston is producing:
1. BFE95 (gram weight: 18-30g)
Explanation: Detected at a flow rate of 32 liters, the filtering effect of 3-micron bacterial particles reaches 95%.
2. BFE99 (gram weight: 20-30g)
Explanation: Detected at a flow rate of 32 liters, the filtering effect of 3-micron bacterial particles reaches 99%.
3. VFE99 (gram weight: 25-30g)
Explanation: When tested at a flow rate of 32 liters, the filtering effect of 3-micron virus particles reached 99%.
4. PFE99 (gram weight: 24-30g)
Explanation: Detected at a flow rate of 32 liters, the filtering effect of 0.1-micron particles reaches 99%.
5. KN90 (gram weight: 30-50g)
Explanation: When tested at a flow rate of 55 liters, the filtration effect of 0.3-micron solid particles reaches 90%.
6. N95 (gram weight: double layer 50g)
Explanation: Detected at a flow rate of 85 liters, the filtration effect of 0.3-micron solid particles reaches 95%.
7. N99 (gram weight: 80g double layer)
Explanation: When tested at a flow rate of 85 liters, the filtration effect of 0.3-micron solid particles reaches 99%.
8. FFP1 (gram weight: 50g)
Explanation: The standard is equivalent to N90.
9. FFP2 (Weight: 50g)
Explanation: The standard is equivalent to N95.
Applications
N95 and KN95 respirators
Surgical and medical masks
Industrial dust filtration media
Air purifier filter cores
Healthcare and pharmaceutical filtration layers
Melt Blown For N95 Respirator Specifications
| Feature | Description |
|---|---|
| Fiber Type | Melt blown polypropylene |
| Filtration Efficiency | ≥ 95% (for 0.3 μm particles) |
| Basis Weight | 20–30 gsm (customizable) |
| Air Permeability | Optimized for < 200 Pa pressure drop |
| Width | Up to 1600 mm |
| Surface Uniformity | ±3% density deviation |
| Electrostatic Treatment | Permanent charge retention technology |
Why Choose Weston Melt Blown Fabric
Consistent Filtration Performance - Uniform fiber diameter ensures reliable barrier protection.
Enhanced Breathability - Low resistance allows longer, more comfortable mask wear.
Stable Electrostatic Charge - Maintains filtration efficiency over time, even under humidity.
Clean Production Environment - Class 100,000 cleanroom ensures high purity and no micro-contamination.
Customizable Formats - Available in rolls, cut sheets, or OEM mask material integration.
Partner with Weston
From polymer selection to final inspection, Weston controls every step of the melt blown process in-house. Our expertise in nonwoven material science ensures you receive reliable, performance-tested filter media ready for high-demand production.
Request samples, OEM collaboration details, or technical consultation today at 📧 info@westonmanufacturing.com
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