Products Description

PTFE filter bags are made from polytetrafluoroethylene (PTFE) to provide superior performance in high temperature, corrosive and chemically aggressive environments. Unique coated or needle felt construction designs, such as coated PTFE filter bags, provide low resistance, high dust holding capacity, and extended service life.

Key Features

Chemically Inert

Resistant to strong acids, bases, solvents and corrosive chemicals, it excels in chemical exhaust treatment.

High filtration efficiency

Microporous PTFE membrane surface traps submicron particles (>99.99% efficiency) while maintaining low pressure drop to optimize airflow.

Anti-stick properties

Non-stick surface minimizes powder cake penetration and reduces operating resistance. Easy to clean, reduced maintenance and consistent performance.

Long service life

Abrasion, hydrolysis and stretch resistance (thermal shrinkage <2%) provide a service life 2-3 times longer than conventional polyester or fiberglass filter bags.

Technical Specifications

Product name	PTFE (Teflon) Filter Bags
Material	Pure PTFE membrane laminated to PTFE felt or glass fiber backing
Micron rating	0.1–1.0µm (configurable)
Max Continuous Temperature	240°C (464°F)
Max short-term temperature	260°C (500°F)
Chemical Resistance	Resists ALL industrial chemicals except molten alkali metals
Air Permeability	2–5 CFM/ft² (adjustable based on membrane grade)
Tensile Strength	>800 N/5cm (warp/weft directions)
applications	Ideal for hot gas filtration in cement kilns, boilers, incinerators and power plants.

Problem-Specific Design

Cement Plants Battling Kiln Dust?

Issue: Fiberglass bags degrade rapidly in 220°C+ kiln exhaust.
Our Fix: Pure PTFE membrane handles 240°C continuous heat, capturing <0.3µm limestone dust with 99.99% efficiency-extending bag life from 6 months to 2+ years.

Waste Incinerators Clogged by Acidic Fly Ash?

Issue: Polyester bags dissolve in HCl/SO₃-rich flue gas.
Our solution: chemically inert PTFE is resistant to all acids, alkalis and solvents, reducing unplanned downtime in waste-to-energy plants by 70%.

Pharmaceutical Lines Contaminated by Sticky Powders?

Issue: Standard bags trap moisture, causing API cross-contamination.
Our Fix: Hydrophobic PTFE membrane repels moisture and releases dust cakes in <3 pulse cycles-cutting cleaning energy costs by 45%.