EnglishCustom polyimide needle felt filter bags for baghouses requiring high-temperature resistance, fine-dust filtration and stable pulse-cleaning performance.
P84 filter bags are designed for high-temperature baghouse applications where fine-dust filtration, stable pressure drop and reliable pulse-cleaning performance are important.
Unlike conventional round fibers, selected P84 polyimide filter media use a multi-lobal fiber profile with a larger effective filtration surface. This structure can help capture fine particles efficiently while reducing the tendency of dust to penetrate deeply into the filter media.
Learn About P84 Needle Felt Filter Fabric
| ITEM | API155 | API255 |
|---|---|---|
| Working temperature (°C) | 240 | 240 |
| Peak temperature (°C) | 260 | 260 |
| Emission (mg) | / | / |
| Weight (g/㎡) | 550±5% | 550±5% |
| Thickness (mm) | 2.8±10% | 2.8±10% |
| Air permenability (m³/㎡/min@200Pa) | 20±20% | 16±20% |
| Tensile strength / warp（N/5cm） | ≥900 | ≥900 |
| Tensile strength / weft（N/5cm） | ≥1200 | ≥1200 |
| Tensile elongation / warp（%） | ≤25 | ≤25 |
| Tensile elongation / weft（%） | ≤50 | ≤50 |
| 24-hour heat shrink / warp（%） | ≤1.5 | ≤1.5 |
| 24-hour heat shrink / weft（%） | ≤1.0 | ≤1.0 |
Post-treatment: Heat Setting / Singeing / Glazing / PTFE Dipping / PTFE Membrane
*API155 and API255 are Aokai internal P84 filter media model codes. Different models may vary in fiber composition, scrim construction, air permeability, surface treatment and optional membrane configuration.
Aokai provides custom P84 filter bags based on your baghouse design and operating conditions.
Please send us your existing bag size, drawing, sample or operating data for a suitable recommendation.
P84 needle felt with heat setting, singeing, calendering and optional ePTFE membrane lamination.
Snap bands, cuffs, ring tops and flange options.
Disc bottoms, reinforced bottoms or special structures.
Thread and seam design matched to operating needs.
Widely used in waste incineration, coal-fired boilers, cement kiln tails, asphalt mixing plants, steel metallurgy, carbon black plants, waste incinerators, and other high-temperature, high-humidity, acidic, or corrosive flue gas environments.
High quality seam designed for lowest emissions
Top and Bottom Configurations
Support Rings
Pinhole Sealing Technology
Seamless Sewing Technology
TAP Lamination Technology
As a leading manufacturer of industrial filtration media in China, we have 20+ years of industry experience, a 27,000㎡ modern production facility, and 8 advanced production lines, with an annual output of over 2 million filter bags. Certified with ISO9001, ISO14001, and ISO45001, our products are exported to 40+ countries and regions.
Annual Filter Media Production
Annual Filter Bag Production
Annual Cage Production
Raw material quality control
The raw materials of Aokai have undergone tests for 13 indicators in the laboratory, including fiber composition, air permeability, breaking strength and elongation at break, thermal shrinkage, moisture regain, oil content, and fiber melting point, with all test standards surpassing the relevant criteria.
Production process quality control
The factory has obtained ISO9001 and ISO14001 certifications. It operates in accordance with the 7S management standards, strictly controls product quality in line with international high-end product testing standards, retains inspection records for more than 3 years and electronic records permanently, ensuring the traceability of each batch of products.
HELP & SUPPORT
A P84 filter bag is a high-temperature industrial filter bag made from polyimide needle felt. It is commonly used in baghouse systems that require fine-dust filtration and reliable pulse-cleaning performance.
P84 filter bags can be used in selected high-temperature dust collection applications, such as cement, waste treatment, metal processing, asphalt mixing and other industrial baghouse systems.
P84 filter media is known for its fine-dust filtration performance and dust-release capability. Its fiber structure can help capture small particles and support stable pressure drop under suitable operating conditions.
Yes. P84 filter bags can be supplied with ePTFE membrane for applications requiring surface filtration, improved dust release and reduced dust penetration into the filter media.
No. P84 filter bags should not be selected based on temperature alone. Gas composition, oxygen level, moisture, chemical exposure, dust properties and cleaning conditions should also be evaluated.
Please provide the operating temperature, peak temperature, gas condition, dust type, existing bag size, cleaning method, required quantity and any drawing, sample or photos available.
*All information will be kept confidential.
