Ultra-microfibre surface filter bags, built for low emissions.
Ultra-microfibre is Masturlal's surface layer of 13–15 µm fibres needled into the face of the felt. It catches fine dust at the surface, so stack emissions stay at 5 mg/Nm³ or lower, roughly half the typical industry norm, while the dust cake pulses off cleanly and pressure drop stays low. It can be added to polyester, PPS, aramid or P-84 felt, so the temperature rating is set by the base fibre.
- Fibre size
- 13–15 µm
- Emissions
- ≤5 mg/Nm³
- Base fibres
- Polyester, PPS, meta-aramid, P-84
- Specified by
- Fibre decitex and needling for the dust
Where it works
- Tight emissions limits
- Fine dust that passes standard felt
- Heavy dust loads where membranes blind
- Plants trying to cut fan power
Where to avoid it
- Applications that need a full PTFE chemical barrier
- Duty where the base fibre itself is unsuitable
Typical applications
Cement, steel, aluminium, ferro-alloys and power: any baghouse with a tight emissions limit.
How it compares
| Fibre | Continuous temperature | Strengths | Watch out for | Typical duty |
|---|---|---|---|---|
| Polyester | up to 150 °C | Low cost, good abrasion resistance | Hydrolysis in hot, moist gas | Cement mills, packing, crushers, general dedusting |
| PPS (Ryton) | up to 190 °C | Resists acids and alkalis | Oxidation at high O₂ | Coal-fired boilers, waste incineration |
| Meta-aramid (Nomex class) | up to 204 °C | Strong, abrasion resistant | Acid attack and hydrolysis | Asphalt, foundry, cement raw mills |
| P-84 polyimide | up to 240 °C | Trilobal fibre, fine-dust capture | Hydrolysis in very moist gas; cost | Cement kilns, waste-to-energy |
| Fibreglass | up to 260 °C | Highest temperature, chemically stable | Flex and abrasion; needs a finish | Reverse-air kilns, calciners, furnaces |
| Ultra-microfibre surface (13–15 µm) | set by base fibre | ≤5 mg/Nm³ with low pressure drop | Must be specified to the dust | Any of the above where emissions matter |
What to send for a recommendation
- Collector type (pulse-jet, reverse-air or shaker) and the collector drawing
- Bag diameter, length, top and bottom construction, and quantity
- Continuous and peak gas temperature
- Dust chemistry, moisture, acid dew point and particle size
- Current bag specification, bag life and differential pressure
- Emissions target
Questions, answered.
What is ultra-microfibre filter media?
A surface layer of very fine fibres, 13–15 µm, needled into the felt. It captures fine particles at the surface instead of letting them into the felt.
Is microfibre better than a PTFE membrane?
For heavy dust loads, Masturlal's view is yes: membranes can blind and raise pressure drop, while microfibre holds similar emissions with lower pressure drop. See the full comparison.
What emissions can it achieve?
Masturlal engineers its media for stack emissions of 5 mg/Nm³ or lower.
Send us your dust profile.
Temperature, chemistry, moisture, particle size and your emissions target. An application engineer replies within one working day, usually with a media specification within two.