High-Performance PTFE Scrim Supported Felt for Coal Fired Boilers

Q: What operating temperature can PTFE needle-punched felt withstand?

PTFE felt offers continuous temperature resistance of 250–270 °C and can handle short-term peaks of 280–300 °C , making it suitable for harsh, high-temperature flue-gas environments.

Q: In which industrial applications is PTFE felt most commonly used?

PTFE felt is widely used in: Cement kilns & clinker production Waste-to-Energy (WtE) incinerators Chemical processing & corrosive gas systems Metallurgical furnaces and smelting operations High-temperature boilers and combustion processes Any gas stream containing acids, alkalis, solvents, or aggressive particulates

Q: What makes PTFE felt different from other high-temperature filter materials?

PTFE felt provides: Exceptional chemical resistance (acids, alkalis, solvents) Superior thermal stability up to 300 °C Low friction surface for better dust release Excellent durability in corrosive and sticky-dust environments Other organic felts (PPS, aramid) cannot match this level of chemical resistance.

Q: How do I know if PTFE felt is the right media for my system?

Omela evaluates: Temperature window & thermal cycling Gas-stream chemistry (SOx, NOx, chlorides, acids, alkalis) Moisture & acid-dew-point conditions Dust loading, abrasiveness, and particle size Air-to-cloth ratio & required filtration efficiency Compatibility with cage design and cleaning system A technical evaluation ensures that the chosen felt matches your system’s demands.

Q: Does Omela offer customized PTFE felt or filter bags?

Yes. Omela provides full customization, including: Felt weight, thickness, permeability, fiber structure Optional scrim reinforcement or multi-layer composites Surface treatments such as PTFE impregnation, PTFE membrane, singed/calendared finish Custom bag construction: top/bottom designs, sewn/welded seams, reinforced stress zones Engineering support to ensure proper fit & long-term performance

Q: Can PTFE felt improve baghouse service life?

Yes. Thanks to its high chemical resistance, low friction, and thermal stability, PTFE felt offers significantly longer bag life , especially in systems with: High SOx/Cl-based corrosion Sticky or oily dust High thermal loads Aggressive gas chemistry

PTFE Needle-Punched Felt

PTFE Needle-Punched Felt Overview

PTFE Needle-Punched Felt is a 100% pure PTFE (Teflon®) filtration media designed for high-temperature, highly corrosive, and chemically aggressive industrial environments.
Its unique material properties deliver:

Exceptional chemical resistance to acids, alkalis, and solvents
Outstanding thermal stability, with continuous operation at 250–270 °C and peaks up to 280–300 °C
Low surface friction, enabling superior dust release
High filtration efficiency for ultra-fine particulate
Long service life even under extreme flue-gas and heavy-dust conditions

PTFE is widely used where other filter materials fail due to chemical attack, thermal degradation, or fouling from sticky or oily dust.

Key Performance Benefits of PTFE Needle-Punched Felt

Exceptional High-Temperature Resistance

Withstands continuous 250–270 °C operation and 280–300 °C peak temperatures without shrinkage, embrittlement, or structural degradation of the felt.

Outstanding Chemical Inertness

100% PTFE fibers provide exceptional resistance to acids, alkalis, solvents, and corrosive flue-gas components—ideal for cement, WtE, chemical, and metallurgical processes.

Superior Dust Release & Low Fouling

Ultra-low surface friction and hydrophobicity minimize dust adhesion, reduce caking and mudding, and improve pulse-jet cleaning efficiency even with sticky or oily particulate.

High Filtration Efficiency & Stable ΔP

Fine PTFE fiber structure captures ultra-fine particles while maintaining stable air permeability and low, predictable differential pressure over the bag’s service life.

Engineered for Extreme Industrial Conditions

Designed for high-temperature, highly corrosive, and chemically aggressive gas streams in cement kilns, waste-to-energy incinerators, power boilers, and chemical plants.

Flexible Supply & Customization Options

Available as roll goods or custom-fabricated PTFE filter bags, with optional PTFE membrane, different weights and thicknesses, tailored to specific temperature, chemistry, and A/C-ratio requirements.

PTFE Needle-Punched Felt Specifications

Technical Properties of PTFE Needle-Punched Felt
Fiber	PTFE fiber
Scrim	PTFE yarn
Weight (g/m²)	750
Thickness (mm)	1.1
Width (m)	≤2.2
Finish Treatment	PTFE impregnation, PTFE membrane
Air Permeability (L/m²·s @200Pa)	30–80
Tensile Strength (N/5×20cm)	Warp: >800
Tensile Strength (N/5×20cm)	Weft: >800
Tensile Elongation (%)	Warp: 10
Tensile Elongation (%)	Weft: 15
Shrinkage (250 °C)	Warp: <1%
Shrinkage (250 °C)	Weft: <1%
Temperature
Continuous Temperature (°C)	250
Instant Temperature (°C)	280
Chemical Properties
Anti-acid	Excellent
Anti-alkali	Excellent
Anti-abrasion	Good
Hydrolysis Stability	Excellent

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INDUSTRIAL
APPLICATIONS

PTFE Needle-Punched Felt is engineered for high-temperature, highly corrosive, and chemically aggressive industrial environments. Its 100% PTFE fiber construction offers outstanding chemical inertness, thermal stability up to 250–270 °C (peaks 280–300 °C), and excellent dust-release performance.

More Applications

Cement, Lime & Mineral Processing

In cement kilns, clinker coolers, and lime / mineral processing lines, exhaust gas temperatures are very high and rich in SO₂ / SO₃, alkalis, and abrasive dust.

Waste-to-Energy (WtE) & High-Temperature Combustion

Waste-to-energy and incineration systems feature rapid temperature fluctuations, condensate risk, and corrosive SOx / HCl / HF components.

Chemical, Petrochemical & Corrosive Process Gas

In chemical and petrochemical plants, metallurgical furnaces, and power-plant boilers treating aggressive flue gas, filters are exposed to acids, alkalis, organic solvents, and high-temperature particulate.

Engineering Support & Customization

Pre-Project Technical Evaluation

Operating temperature window (continuous 250–270 °C, peaks 280–300 °C)
Thermal cycling frequency and start-up/shut-down behavior
Moisture level, acid-dew-point risk, and condensate corrosion
Gas-stream chemistry (acids, alkalis, solvents, chlorides, SOₓ, NOₓ)
Dust loading, abrasiveness, and particle size distribution
Required filtration efficiency, air-to-cloth ratio, and allowable pressure drop
Compatibility with cages, tube-sheet layout, and cleaning system parameters

Custom Engineering Solutions

Selection of felt weight, thickness, fiber structure, and permeability
Optional scrim reinforcement or multi-layer composite structures
Advanced surface treatments: PTFE impregnation, PTFE membrane, singed or calendared finishes
Optimization for cement kilns, WtE incinerators, chemical plants, metallurgy, and corrosive high-temperature gas
Custom bag construction: top/bottom configurations, sewn or welded seams, reinforced stress zones
Engineering support to ensure proper fit, mechanical stability, and long-term filtration performance

Quality Assurance & Testing

Air-permeability and pressure-drop verification
Tensile-strength and elongation testing in both directions
Heat-shrinkage and dimensional-stability tests at elevated temperatures
Chemical-resistance testing for acids, alkalis, and solvents
Microscopic inspection of fiber distribution and surface uniformity
Verification of PTFE impregnation or membrane coating integrity
Abrasion-resistance evaluation for heavy-dust environments

LET’S WORK TOGETHER

Why Choose Omela Filtration?

Choosing the right filtration supplier affects everything from system stability to maintenance downtime. At Omela Filtration, we combine reliable materials, controlled production, and years of industry experience to support dust and liquid filtration needs across different plants and applications.

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Premium Materials & Stable Quality

We use consistent-grade filter media, sewing thread and metals sourced from qualified suppliers. Each batch is checked for weight, thickness, air permeability and tensile strength to keep performance steady across shipments.

Advanced Production & On-Time Delivery

Our facility is equipped with modern sewing lines, hot-welding machines and automated inspection tools. This keeps production efficient and helps us meet tight delivery schedules, even on custom orders.

Experienced Team with Practical Know-How

Our engineers and technicians have long experience with dust collectors, liquid systems and industry-specific conditions. They help you match materials to temperature, chemistry and air-to-cloth ratios to avoid unnecessary failures.

Fast Service & Clear Communication

From sampling to documentation and shipping, our team responds quickly and keeps information clear. Customers in cement, asphalt, power and water-treatment plants rely on our service to resolve problems without delay.

Full-Cycle Technical Support

From the first technical discussion to installation and long-term maintenance, our team stays involved at every stage. We analyze your operating conditions, adjust product designs when needed, and ensure the final filtration setup works reliably in real plant environments. After delivery, our service team continues to provide guidance and troubleshooting support, helping you keep your system stable and downtime low.