Polypropylene Needle-Punched Felt (PP Felt)
Polypropylene (PP) needle-punched felt is a lightweight, hydrophobic, chemically inert non-woven filter media manufactured from 100% polypropylene staple fibers. Through a high-density needle-punching process, the fibers are mechanically entangled into a uniform, porous, three-dimensional structure that provides stable permeability, low resistance, and strong chemical durability.
Its excellent resistance to moisture, acids, alkalis, and organic solvents makes PP felt a preferred choice for liquid-solid separation, wet dust filtration, wastewater treatment, and general low-temperature industrial filtration applications. Polypropylene felt is widely used in industries where high humidity or corrosive liquids would quickly damage polyester or other temperature-sensitive media.
PP felt is especially suitable for systems where chemical compatibility, moisture resistance, and cost-effectiveness matter more than high-temperature stability.
smoother surface, reduced fiber shedding
denser surface, improved particle capture
dimensional stability under thermal cycling
enhanced resistance to sticky slurry or wet dust
for explosive or combustible dust
reduces emissions and improves filtration of fine particulates
| Model | Weight (g/m²) | Thickness (mm) | Air Permeability (m³/m²/min) | Tensile Strength Warp (N/5×20cm) | Tensile Strength Weft (N/5×20cm) | Tensile Elongation Warp (%) | Tensile Elongation Weft (%) | Operating Temp. (°C/°F) | Max Surge Temp. (°C/°F) | Suitable pH Value |
|---|---|---|---|---|---|---|---|---|---|---|
| OMPP-01 | 550 | 3.5 | 10 | 1000 | 1500 | 50 | 50 | 130 / 266 (Dry Heat) | 150 / 302 (Dry Heat) | 1–12 |
| OMPP-05 | 400 | 2.5 | 20 | 500 | 1000 | 60 | 60 | 130 / 266 (Dry Heat) | 150 / 302 (Dry Heat) | 1–12 |
| OMPP-10 | 400 | 2.2 | 24 | 500 | 1000 | 80 | 80 | 130 / 266 (Dry Heat) | 150 / 302 (Dry Heat) | 1–12 |
| OMPP-25 | 400 | 3.0 | 35 | 500 | 1000 | 85 | 85 | 130 / 266 (Dry Heat) | 150 / 302 (Dry Heat) | 1–12 |
| OMPP-50 | 320 | 3.5 | 100 | 500 | 600 | 100 | 80 | 130 / 266 (Dry Heat) | 150 / 302 (Dry Heat) | 1–12 |
| OMPP-75 | 320 | 3.5 | 130 | 500 | 600 | 100 | 80 | 130 / 266 (Dry Heat) | 150 / 302 (Dry Heat) | 1–12 |
| OMPP-100 | 350 | 3.8 | 100 | 500 | 500 | 100 | 100 | 130 / 266 (Dry Heat) | 150 / 302 (Dry Heat) | 1–12 |
| OMPP-200 | 400 | 3.8 | 130 | 500 | 600 | 110 | 100 | 130 / 266 (Dry Heat) | 150 / 302 (Dry Heat) | 1–12 |
Polypropylene (PP) needle-punched felt is a lightweight, hydrophobic, and chemically resistant filter media ideal for liquid-solid separation, wet dust filtration, and low-temperature industrial applications. It offers stable permeability, low pressure drop, and strong durability across a wide pH range, making it suitable for wastewater treatment, chemical processing, and humid environments.
Polypropylene felt is widely used in filter presses, liquid bag filters, and clarification systems because of its hydrophobic nature and superior chemical resistance. Typical uses include: Industrial wastewater treatment, Pre-filtration for RO/UF systems, Chemical and pharmaceutical liquid processing, Sludge dewatering and oil-water separation.
Where polyester suffers from hydrolysis, PP felt maintains dimensional stability and filtration efficiency. Ideal for: Hygroscopic dust, Humid exhaust gas ducts, Moist chemical dust filtration
Because PP is lightweight, clean, and compatible with mild food-grade conditions, it is commonly used in: Grain processing, Starch production, Sugar filtration, Organic dust recovery
Before selecting PP felt, Omela performs a detailed assessment of:
This ensures the chosen PP media meets performance, durability, and regulatory requirements.
Omela offers tailored polypropylene felt configurations, including:
Each batch of PP felt undergoes strict testing:
All PP felt is manufactured to deliver consistent, predictable performance in demanding industrial environments.
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.
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.
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.
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.
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.
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.
With 20+ years of experience and 1000+ global clients, we deliver stable filtration performance and dependable dust-collector operation.
