Welcome to Ningbo Suita Filter Material Co., Ltd.
PPS (Polyphenylene Sulfide) needle punched felt is a high-performance nonwoven filter fabric manufactured via mechanical needle-punching of PPS staple fibers. It is specifically engineered for dust collection bags used in aggressive environments containing sulfur oxides (SOx), moisture, and moderate acid gases at continuous temperatures up to 190°C.
Thanks to PPS’s inherent molecular structure (a sulfur-aromatic polymer), the felt offers exceptional chemical resistance, hydrolysis stability, and flame retardancy – making it the preferred choice for coal-fired power plants, waste incinerators, cement kilns, and chemical dryers.
Outstanding acid resistance – Withstands sulfuric acid condensation (pH 2–4) without degradation.
Excellent hydrolysis stability – Performs reliably in high-humidity flue gases (up to 100% RH intermittent).
Continuous operating temperature – 190°C (peak 210°C).
Flame retardant – UL 94 V-0 rating; self-extinguishing.
High dimensional stability – Low shrinkage (<1% at 190°C).
Good abrasion resistance – Suitable for pulse-jet cleaning with medium to high pressure.
High filtration efficiency – Achieves ≤10 mg/Nm³ emission (even ≤5 mg with PTFE membrane lamination).
| Parameter | PPS Needle Punched Felt (Standard) | PPS + PTFE Membrane |
|---|---|---|
| Basis weight | 500 – 600 g/m² | 550 – 650 g/m² |
| Thickness | 1.8 – 2.2 mm | 2.0 – 2.4 mm |
| Air permeability | 80 – 120 L/dm²·min @200Pa | 30 – 60 L/dm²·min @200Pa |
| Tensile strength MD | ≥ 900 N/5cm | ≥ 900 N/5cm |
| Tensile strength CMD | ≥ 1000 N/5cm | ≥ 1000 N/5cm |
| Operating temperature (continuous) | 190°C | 190°C |
| Peak temperature (short term) | 210°C | 210°C |
| Temperature limit (instant) | 230°C | 230°C |
Optional finishes: water/oil repellent (oleophobic), anti-static (carbon fiber blend), or PTFE coating.
| Environment | Competing Material | PPS Advantage |
|---|---|---|
| Coal-fired boiler flue gas (high SO₂ + moisture) | Polyester (degrades at >135°C) | PPS handles 190°C + acid + moisture |
| Waste incinerator (acidic condensate) | Aramid (Nomex®) – poor acid resistance | PPS outperforms in acid/humidity |
| Cement kiln (SOx + NOx) | Fiberglass (brittle) | PPS is flexible + chemical resistant |
| Chemical dryer (mixed acid gases) | PTFE (very expensive) | PPS is cost-effective alternative |
For applications where PTFE is overkill but polyester fails, PPS needle punched felt is the optimal balance of performance and price.
We are recognized as one of the best PPS needle punched felt suppliers in China, with:
✅ 42+ years of manufacturing experience – Specializing in high-temperature filter media.
✅ In-house needle-punching line – From fiber blending to heat-setting and finishing.
✅ Quality assurance – ISO 9001:2025 certified. Each roll tested for weight, thickness, air permeability, and thermal shrinkage.
✅ Custom solutions – Blend PPS with PTFE, aramid, or carbon fibers for enhanced performance.
✅ Fast delivery – 10–15 days for standard orders; sample rolls in 5 days.
✅ Export expertise – Supplied to power plants, incinerators, and cement plants in Europe, USA, Japan, Korea, Middle East, and Southeast Asia.
Search keywords: best PPS needle felt supplier China, PPS filter bag material, high temperature PPS felt, coal-fired power plant filter media, acid resistant filter fabric, 最好的PPS滤料供应商
Coal-fired power plants – Baghouse filters for flue gas desulfurization (FGD) bypass.
Waste-to-energy incinerators – Municipal solid waste (MSW) and hazardous waste.
Cement kilns – Raw mill and clinker cooler exhaust.
Chemical dryers – Drying of acids, pigments, and pharmaceuticals.
Carbon black production – High abrasion resistance needed.
Asphalt plants – Hot gas filtration.
We offer fully customizable PPS needle punched felt:
Basis weight: 350 – 800 g/m²
Thickness: 1.5 – 3.0 mm
Scrim reinforcement: Polyester, fiberglass, or PTFE scrim for extra tensile strength.
Membrane lamination: ePTFE (expanded PTFE) for surface filtration and ultra-low emissions (<5 mg/Nm³).
Surface finishes: Water/oil repellent, anti-static, or PTFE coating.
Fiber blends: PPS + PTFE (20–50%), PPS + aramid, PPS + carbon (anti-static).
Just send your operating conditions to:
📧 info@suitagroup.com
📱 WhatsApp: +86 15957487562
Our engineers will recommend the optimal felt specification and provide a free sample swatch.
Every batch of PPS needle punched felt undergoes:
Basis weight (ISO 9864)
Thickness (ISO 9863)
Air permeability (ISO 9073-15)
Tensile strength (ISO 9073-3)
Thermal shrinkage (190°C for 24 hours)
Hydrolysis resistance (autoclave test at 120°C, 100% RH)
We provide mill test certificates with every shipment.