P84 (polyimide) needle felt,P84 (polyimide) Needle Punched Felt,P84 (polyimide) Needled Felt

P84 (polyimide) needle felt

P84® Felt filter bags provide a unique and cost effective solution for many tough industrial baghouse applications. Versatile and efficient,P84® usage ranges from minerals processing, lowacid coal fired boilers, asphalt/hot mix plants, to soil remediation facilities.P84® fibers are needled into filtration quality felts to be sewn into filter bags suitable for use in pulse jet style baghouses. The unique tri-lobal fiber structure of P84® provides customers with high efficiency filtration, low pressure drop, and reduced cleaning energy.P84 polyimide needlefelts are excellent high temperature filter media in terms of performance, generally surpassing the other standard media with the exception of PTFE.

Features
Excellent steady under high temperature and resistance to acid
P84 can operate continuously, under practical and low acid working conditions, at temperatures up to 500°F(260 °C).
High filtration efficiency, high tensile strengh
The complex cross sectional shapes create 30-90% more collection surface area when compared to round or oval shaped fibers.
Low back washing pressure, maximun flexibility
The unique tri-lobal fiber structure of P84 provides customers with high efficiency filtration, low pressure drop, and reduced cleaning energy.
Excellent dust cake release
P84 has irregular, tri-lobal fibers that provide better collection efficiencies and enhanced dust cake release properties.

Disadvantages
- Fair resistance to alkali

Applications
- Incinerator plants,
- Cement Kiln gas
- Lowacid coal fired boilers
- Asphalt/hot mix plants flue gas
- Minerals processing
- Soil remediation facilities

Specification
Compositions P84/P84 scrim P84/galss scrim
Weight (g/m2) 450 500 550 800 850 900
Thickness (mm) 2.1 2.3 2.5 2.5 2.8 3.0
Permeability (m3/m2/min) 19 15 12 16 13 10
Tensile strength(N/5 20cm) Warp 650 700 800 1800 1800 1800
Weft 1150 1200 1300 1800 1800 1800
Tensile Elongation (％) Warp <35 <35 <35 <10 <10 <10
Weft <55 <55 <55 <10 <10 <10
Broken strength
(Mpa/min) 2.55 2.50 2.40 3.20 3.10 2.95
Working Temperature(℃) ≤ 260 ≤ 260
Short time Working temperature(℃) 280 280
Anti-acid Excellent Excellent
Anti-alkali Fair Fair
Anti-abrasion Excellent Excellent
The stability of water solution Medial Medial
Finishing treatment High temperature hot pressing，Singeing High temperature hot pressing，Singeing, membrane.