All Categories


Home > BLOG

What is the knowledge of PTFE filter bags?

Time: 2022-01-10

PTFE is polytetrafluoroethylene, also known as Teflon (Teflon), which is one of the most high-end varieties of bag filter materials.


Basic Introduction

Polytetrafluoroethylene synthetic fiber filter bag is a filter bag made of a unique material, which can withstand acid and alkali erosion in the entire pH range under the continuous operating temperature of 240 °C and the instantaneous temperature of 260 °C. Polytetrafluoroethylene synthetic fiber filter bags are excellent in self-wetting, do not absorb moisture, and can withstand ultraviolet radiation. However, the wear resistance of PTFE fiber filter material is general, so there are stricter requirements (finishness) for the filter bag frame. Aolan PTFE fiber filter bags are more suitable for harsh conditions requiring corrosion resistance and occasions where the service life of the filter material is high.


Polytetrafluoroethylene synthetic fiber filter bags can be used for flue gas treatment in coal-fired boilers, waste incineration, carbon black production, titanium dioxide (TiO2) production and other processes, and are also used in the primary smelting, refining and chemical production of some metals.


Main Technical Parameters of PTFE Filter Bag:

Product name TF/TF A750BSG

Fiber 100% PTFE

Base fabric 100% PTFE

Square weight 750g/m2

Thickness 1.1mm

Density 0.68g/cm3

Air volume 100L/dm2.min

Breaking Strength – Longitudinal ≥450 N/5cm

Breaking Strength – Transverse ≥450 N/5cm



Heat shrinks @260degC, 90min 3%

Bursting strength >300 N/cm2

Continuous working temperature 240℃

Instantaneous working temperature 260℃

Post treatment heat setting

Hot categories