AFB Series Needle Felt Filter Bag for Industrial Liquid Filtration

The AFB Series Needle Felt Filter Bag is designed for reliable and economical liquid filtration across a wide range of industrial applications. Manufactured from high-quality polypropylene (PP), polyester (PE), and polytetrafluoroethylene (PTFE) needle felt media, this series offers excellent flexibility to meet different temperature ranges and chemical compatibility requirements.

Engineered for medium- to low-viscosity liquids, the AFB filter bag is ideal for routine filtration and pre-filtration processes. Its uniform pore structure ensures stable filtration performance, while maintaining consistent flow rates and efficient particle retention.

To enhance filtrate quality, the filter media surface can be singed or calendered, effectively reducing fiber shedding and extractables. The bag body is constructed using ultrasonic welding or high-strength stitching, ensuring a secure seal between the filter media and the sealing ring, preventing bypass leakage.

With its balanced combination of performance, durability, and cost efficiency, the AFB series is one of the most widely used solutions in industrial liquid filtration systems.

Key Features

1. Multiple Media Options (PP / PE / PTFE)

Available in various needle felt materials to suit different operating temperatures and chemical environments, including acids, alkalis, and organic solvents.

2. Uniform Pore Structure for Stable Filtration

Consistent pore distribution provides reliable filtration performance with a nominal filtration efficiency of approximately 85%, making it suitable for general filtration applications.

3. Depth Filtration Structure with High Dirt-Holding Capacity

The needle felt media enables true depth filtration, allowing higher contaminant loading and extended service life.

4. Reliable Sealing Design – No Bypass Leakage

Constructed with ultrasonic welding or stitched seams to ensure a tight seal between the bag body and the sealing ring, eliminating side leakage.

5. Various Sealing Ring Options

Compatible with multiple sealing configurations, including:

· Plastic rings (PP / PE)

· SDS (Self-Sealing Design)

· STS (Steel Ring Design)

· Galvanized steel or stainless steel rings

6. Surface-Treated Media for Clean Filtration

Singed or calendered surface treatment minimizes fiber migration and extractables, ensuring cleaner filtrate.

7. Broad Chemical Compatibility

Suitable for filtering a wide range of chemical fluids, including acids, bases, and solvents.

8. FDA-Compliant Materials

Filter media comply with FDA standards and are free from silicone and other contaminants, suitable for food and pharmaceutical applications.

9. Cost-Effective Filtration Solution

An optimized balance between filtration performance and cost helps reduce overall operating and maintenance expenses.

Order Information

Typical Applications

The AFB Series Needle Felt Filter Bag is widely used in various industrial liquid filtration systems, including:

● Paints & Coatings

● Water Treatment & Purification Systems 

● Pharmaceutical Processing 

● Food & Beverage Filtration 

● Fine Chemicals Industry 

● Electronics & Semiconductor Manufacturing 

● Petrochemical Processing 

● Metallurgy Industry 

● Machinery & Industrial Manufacturing Fluids 

Your Trusted Solution for Cost-Effective Liquid Filtration

The AFB Series Needle Felt Filter Bag offers a reliable, versatile, and cost-effective solution for industrial liquid filtration. With its stable filtration performance, high dirt-holding capacity, and broad chemical compatibility, it is an ideal choice for both pre-filtration and general filtration applications.

Whether you are optimizing an existing filtration system or designing a new process, the AFB series provides dependable performance with excellent value.