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Needle Punched Felt

Polyimide (P84) Needle Felt

Detail

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 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 strength.

•The complex cross sectional shapes create 30-90% more collection surface area when compared to round or oval shaped fibers.

•Low back washing pressure, maximum 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 efficiencs and enhanced dust cake release properties.


Applications

•Incinerator plants

•Cement Kiln gas

•Low acid coal fired boilers

•Asphalt/hot mix plants flue gas

•Minerals processing

•Soil remediation facilities


Specification

Heading Product cord

HDPI

Composition

P84/P84 scrim

Weight(g/m2)

450

500

550

Thickness(mm

2.1

2.3

2.5

Air permeabilityL/m2/s

19

15

12

Tensile strength(N/5×20cm

Warp

650

700

800

Weft

1150

1200

1300

Tensile elongation(%)

Warp

<35

<35

<35

Weft

<55

<55

<55

Broken strength(Mpa/min)

2.55

2.50

2.40

Working temperature(℃)

≤ 260

Short time working temperature(℃

280

Anti-acid

Excellent

Anti-alkali

Fair

Anti-abrasion

Excellent

The stability of water solution

Medial

Finishing treatment

High temperature hot pressing

,Singeing


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