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PPS Needle-Punched Felt Filter Bags for Dust Collection

Continuous operating temperature up to 160°C.
Short-term temperature resistance up to 190°C.
High melting point of 285°C.

Excellent resistance to acidic and alkaline gases.
Suitable for pH environments ranging from 1 to 14.

Maintains performance in high-humidity environments.
Resistant to hydrolytic degradation.

Collection efficiency up to 99.5%–99.99%.
Excellent capture performance for PM2.5 and fine dust particles.

High tensile strength
Excellent dimensional stability
Good abrasion, flex, and pulse-cleaning resistance
Long service life

Smooth surface structure
Excellent dust cake release characteristics
Low operating resistance
Reduced energy consumption and maintenance costs

LOI of 34–35
Self-extinguishing when removed from flame
Enhanced operational safety

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Description

PPS filter bags are a type of filter material made from polyphenylene sulfide (PPS) fibers using the same manufacturing processes as other high-temperature filter felts. They are one of the main types of high-temperature resistant filter materials, combining high temperature resistance, acid and alkali resistance, hydrolysis resistance, flame retardancy, and high filtration efficiency.

Filmedia® is a professional manufacturer of dust collection filter bags. We supply diversified material filter bags with customized sizes and surface treatments, serving industrial dust removal systems across global industries with reliable quality and full technical support.

Base Fabric Material – PPS Needle Felt

PPS needle-punched felt possesses excellent high-temperature resistance, chemical stability, abrasion resistance, and flame retardancy, enabling its use in harsh working conditions. Compared to other filter media, it offers higher filtration accuracy and a longer service life, thus finding widespread application in many demanding filtration fields.

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Physical properties

Air permeability(L/m2.s) @200pa	Tensile strength(N/5cm)		Temperature(℃)
Air permeability(L/m2.s) @200pa	warp	weft	continue	instant
150~300	900	1100	190	200

Chemical properties

Acid Resistance	Alkali Resistance	Hydrolytic Resistance	Oxidation Resistance	Abrasion resistance
Excellent	Excellent	Excellent	Poor	Good

Upgrade Processing

To adapt to different working conditions, PPS filter media typically undergoes various post-processing techniques.

Water and Oil Repellent Treatment

Utilizes an advanced fluorocarbon resin impregnation process to impart excellent hydrophobic and oleophobic properties. This effectively prevents bag blinding and clogging caused by condensation, significantly enhances dust release efficiency, and greatly extends the operational lifespan in high-humidity environments.

Anti-Static Treatment

Interwoven with high-performance conductive fibers or integrated with specialized conductive components to achieve efficient static dissipation. This fundamentally eliminates the risk of dust explosions triggered by static sparks, making it ideal for flammable and explosive dust environments.

PTFE (Polytetrafluoroethylene) Impregnation

Formulated by completely penetrating PTFE resin into the fiber matrix to build a robust protective layer on the fiber surface. This comprehensive upgrade enhances the chemical corrosion and abrasion resistance of the filter media, drastically prolonging the filter bag’s service life under harsh working conditions.

PTFE Membrane Laminatio

Features a microporous PTFE membrane laminated to the filter surface via a precision bonding process, establishing a true “surface filtration” mechanism. It achieves a filtration efficiency exceeding 99.99% for ultra-low emissions, while the ultra-smooth surface ensures effortless dust cake release.

Applications

Due to their superior performance in high-temperature sulfur-containing flue gas, high-humidity flue gas, and corrosive environments, PPS filter bags have become the ideal choice for flue gas dust removal systems in coal-fired power plants, waste incineration plants, cement plants, steel metallurgy, and chemical industries. Their overall performance is significantly superior to ordinary high-temperature filter media, offering high economic and application value.