High-Temperature Filtration Up to 200°C with Nomex Durability
Skytech Ultrafab Aramid (Nomex) Filter Bags are the industry standard for baghouse dust collection in environments operating continuously up to 200°C — including asphalt mixing plants, carbon black, cement, iron ore sintering, and aluminium smelting. Nomex fibre provides exceptional thermal stability, inherent flame resistance, and dimensional retention throughout its service life.
What Are Aramid / Nomex Filter Bags?
Aramid fibres are a class of heat-resistant synthetic polymer fibres. Nomex (registered trademark of DuPont) is a meta-aramid fibre widely used for its outstanding thermal and flame resistance. In baghouse filter bags, Nomex fibre is needle-punched into a felt structure that maintains full mechanical strength and filtration efficiency at temperatures that would destroy standard polyester or polypropylene bags.
Features and Benefits
- 200°C Continuous Service: Maintains full tensile strength and filtration efficiency at 200°C continuous; handles short-term peaks to 220°C
- Inherent Flame Resistance: Nomex fibre is inherently non-combustible — will not melt, drip, or support flame even in oxygen-enriched environments
- Dimensional Stability: Nomex maintains precise bag dimensions after repeated thermal cycling, ensuring consistent pulse-jet cleaning performance
- Chemical Resistance: Good resistance to most acids and alkalis at moderate concentration; limited resistance to concentrated strong acids
- PTFE Membrane Option: ePTFE lamination on Nomex base improves emission performance and dust cake release for sub-micron efficiency
- Long Service Life: Nomex bags routinely achieve 2–4 year service intervals in asphalt and cement applications — superior ROI vs other high-temp materials
Technical Specifications
| Parameter | Details |
|---|---|
| Fibre | Meta-Aramid (Nomex® or equivalent) |
| Fabric Weight | 500 – 700 g/m² |
| Continuous Temperature | 200°C |
| Peak Temperature | 220°C (up to 30 min) |
| LOI (Flame Resistance) | 28–32 (inherently flame resistant) |
| Chemical Resistance | Good vs mild acids & alkalis; avoid conc. H₂SO₄ |
| Surface Finish | Singed, Calendered, PTFE Membrane Lamination |
| Cleaning | Pulse Jet, Shaker, Reverse Air |
Applications
- Asphalt Mixing Plants: Hot mix asphalt (HMA) drum and batch plant exhaust dust collection — elevated temperature with bituminous fume
- Carbon Black: High-temperature furnace off-gas filtration in carbon black production for tyres and rubber
- Cement Industry: Clinker cooler and bypass dust collection where process temperatures exceed polyester limits
- Iron Ore Sintering: High-temperature sinter strand and cooler exhaust dust collection in integrated steel plants
- Aluminium Smelting: Anode baking furnace fume filtration and pot room ventilation dust collection
Why Choose Skytech Ultrafab for Aramid – Nomex Filter Bags?
- Genuine Nomex Fibre: Only brand-name or certified equivalent meta-aramid fibre used — ensuring the full 200°C specification is reliably delivered
- PTFE Lamination In-House: ePTFE membrane bonding capability for applications requiring both high-temperature and sub-micron emission compliance
- Competitive vs Imports: Indian manufacturing delivers Nomex bags at significantly lower cost than imported European alternatives without performance compromise
- Full Application Support: Free application review service to confirm Nomex is the correct fibre choice vs P84, PTFE, or fibreglass alternatives
- Rapid Delivery: Standard Nomex bags produced in 10–15 working days; emergency supply from pre-cut stock where available
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