How to Choose Polyester Needle Felt for Dust Filtration？
Polyester needle felt is a fine fiber cloth in which fibers are staggered and the gaps are evenly distributed by non-woven needle punching process. The surfaces of needle felts produced from polyester staple fibers and polyester twisted yarns are hot-rolled, singed or coated. After the post-treatment, the surface of the filter is smooth and smooth, and it is not easily blocked by dust. The filter has a large voidage, good air permeability, a wide range of uses, strong chemical stability, and can not only filter the normal temperature gas but also filter the acid and alkali. The corrosive gas, and can filter water, oil, is the normal temperature conditions, liquid-solid separation and other fields ideal filter material.
Polyester Needle Felt Filter Bags
In industrial dust removal systems, polyester needle felt is a commonly used and highly cost-effective filter material. Whether in the cement, steel, chemical, asphalt mixing, or grain processing industries, polyester needle felt is widely used due to its excellent mechanical properties, good temperature resistance, and stable filtration efficiency.
- High strength and excellent dimensional stability withstand backflush or vibration cleaning.
- Excellent air permeability and filtration accuracy make it suitable for use in various dust concentrations.
- Wide operating temperature range (≤130°C, transient 150°C).
- High wear and fold resistance, suitable for long-term operation.
Product Performance
100% Polyester needle felt
Anti-static polyester needle felt
Polyester needle felt with PTFE membrane
100% Polyester needle felt
Made of high-quality polyester fiber, it has uniform structure and good breathability, and can maintain stable performance under various working conditions.
Performance
| Physical Properties | Fiber | Polyester staple fiber |
| Scrim | Polyester filament yarn | |
| Weight (g/m²) | 550 | |
| Thickness (mm) | 1.95 | |
| Width (m) | ≤ 2.2 | |
| Finish Treatment | Singeing, Calendering, Heat setting | |
| Air Permeability | l/m²/s @ 200 Pa | 250 – 350 |
| Tensile Strength (N/5 cm) | Warp | 1300 |
| Weft | 1500 | |
| Tensile Elongation (%) | Warp | 25 |
| Weft | 35 | |
| Temperature Resistance (°C) | Continuous | 130 |
| Instant | 150 | |
| Chemical Properties | Anti-acid | Middle |
| Anti-alkali | Middle | |
| Anti-abrasion | Excellent | |
| Hydrolysis Stability | Good |
Applicable Industries
- Cement Plant Dust Removal
- Steel Smelting Dust Removal
- Woodworking Shop Dust Removal
- Grain and Feed Processing
- General Industrial Dust Removal Systems
Anti-static polyester needle felt
Conductive fibers (such as stainless steel fibers or carbon fibers) are mixed into polyester fibers to prevent static electricity accumulation from causing sparks or explosions.
Performance
| Physical Properties | Fiber | Polyester staple fiber |
| Scrim | Polyester staple yarn, electric yarn | |
| Weight (g/m²) | 550 | |
| Thickness (mm) | 2.0 | |
| Width (mm) | ≤ 2,200 | |
| Finish Treatment | Singeing, Calendering, Heat setting | |
| Electrical Property | Conductivity (Ω) | 10⁶ – 10⁷ |
| Air Permeability | l/m²/s @200Pa | 200 – 350 |
| Tensile Strength (N/5cm) | Warp | 1100 |
| Weft | 1200 | |
| Tensile Elongation (%) | Warp | 15 |
| Weft | 20 | |
| Temperature Resistance (°C) | Continuous | 130 |
| Instant | 150 | |
| Chemical Properties | Anti-acid | Middle |
| Anti-alkali | Middle | |
| Anti-abrasion | Excellent | |
| Hydrolysis Stability | Middle |
Applicable Industries
- Dust removal in flour mills and feed mills
- Wood processing, aluminum powder, carbon black, and other flammable dust environments
- Dust collection in the chemical and pharmaceutical industries
Polyester needle felt with PTFE membrane
The surface of the needle-punched felt is covered with a PTFE microporous membrane, which allows the dust to form a “surface filtration” on the surface, making dust cleaning easier and emissions lower.
Performance
| Physical Properties | Fiber | Polyester staple fiber |
| Scrim | Polyester filament yarn | |
| Weight (g/m²) | 550 | |
| Thickness (mm) | 1.80 | |
| Width (m) | ≤ 2.2 | |
| Finish Treatment | Singeing, Calendering, PTFE membrane | |
| Air Permeability | l/m²/s @ 200 Pa | 50 – 90 |
| Tensile Strength (N/5 cm) | Warp | 1300 |
| Weft | 1500 | |
| Tensile Elongation (%) | Warp | 25 |
| Weft | 35 | |
| Temperature Resistance (°C) | Continuous | 130 |
| Instant | 150 | |
| Chemical Properties | Anti-acid | Middle |
| Anti-alkali | Middle | |
| Anti-abrasion | Excellent | |
| Hydrolysis Stability | Middle |
Applicable Industries
- Cement kiln tail and mill dust removal
- Asphalt mixing plants
- High-efficiency filtration in the lime, chemical, and pharmaceutical industries
- Working conditions requiring high filtration accuracy and low emissions
Why Choose Filmedia®?
Choose Filmedia® polyester needle felt — make your dust collection system operate more efficiently, safely, and environmentally friendly.
As a professional industrial filtration material manufacturer, Filmedia® has over 20 years of experience in producing dust filter media, with products exported to more than 50 countries worldwide.
- Various filter media customization (basis weight, thickness, surface treatment, etc.).
- Professional selection guidance to ensure perfect matching between filter bags, equipment, and working conditions.
- Stable quality and fast delivery for reliable supply
- Comprehensive technical support and after-sales service.