Polyester monofilament filter bag

Product description

Polyester monofilament filter bag for surface filtration of liquids

The Polyester Monofilament Filter Bag is designed for liquid filtration applications where precision surface filtration, dimensional stability and cleanability are required. Unlike felt media, monofilament bags use a woven polyester mesh with defined aperture sizes to retain particles on the surface of the mesh.

This makes polyester monofilament filter bags ideal for applications where precise particle separation is more important than dirt holding capacity within the media, and where particles can be removed or cleaned regularly.

Filtration principle

Polyester monofilament filter bags operate using surface filtration. Process liquid flows through the woven polyester mesh with accurately defined openings, while particles larger than the mesh aperture remain on the surface of the bag.

This filtration principle provides:

• reliable particle separation at defined sizes

• uniform mesh structure for consistent filtration performance

• minimal migration of particles into the media

• low pressure drop at high flow rates

Because particles remain on the surface, monofilament filter bags are easy to clean and inspect, and can often be reused when appropriate.

Material characteristics

Polyester monofilament mesh is produced from single, continuous polyester filaments woven into a stable and uniform mesh structure.

Key material characteristics include:

• excellent mechanical strength

• stable dimensional performance

• good temperature tolerance compared to nylon

• good resistance to many industrial liquids

• smooth mesh surface for visual inspection

• silicone free construction

• availability in food grade materials

Polyester monofilament stands out when surface filtration precision and mechanical stability are priorities.

Temperature performance and limitations

Polyester monofilament filter bags are suitable for a wide range of industrial liquids and moderately elevated temperatures.

Typical temperature characteristics:

• stable performance in typical industrial liquid filtration environments

• higher temperature tolerance than polypropylene felt in certain applications

Limitations:

• not suitable for highly aggressive chemical environments unless verified

• not designed for deep particulate loading where dirt penetrates media

• long exposures to high temperatures can reduce mechanical strength

Proper selection depends on chemical compatibility and operating temperature.

Design and construction

Polyester monofilament filter bags supplied by Filtra International are engineered for secure installation and dependable performance.

Typical design features include:

• woven polyester monofilament mesh

• stitched construction for strength

• integrated sealing ring options to prevent bypass

• compatibility with perforated or mesh support baskets

• compatibility with standard industrial bag filter housings

The monofilament mesh maintains consistent filtration results across the entire bag surface.

Available micron ratings

Polyester monofilament filter bags are available in a range of mesh sizes to allow precise particle separation.

Typical available ratings include:

• 25 micron

• 50 micron

• 75 micron

• 100 micron

• 125 micron

• 150 micron

• 200 micron

• 250 micron

• 300 micron

• 400 micron

• 500 micron

Standard sizes

Polyester monofilament filter bags are supplied in standard industrial sizes.

Typical sizes include:

• Size 1

• Size 2

• Size 3

• Size 4

• Size 5

Custom sizes are available on request.

Typical applications

Polyester monofilament filter bags are commonly used in:

• liquid clarification in chemical processing

• coatings and paints filtration

• food and beverage pre-filtration

• automotive industry fluid filtration

• recycling and recovery systems

• quality control filtration steps

• general industrial liquid filtration

They are especially suitable for applications requiring precise surface capture and ease of cleaning.

Key benefits

• Precise surface filtration with defined mesh sizes

• Uniform and repeatable mesh structure

• Low pressure drop at high flow rates

• Easy cleaning and reuse where appropriate

• Smooth mesh surface for inspection

• Wide range of mesh sizes

• Compatible with standard bag filter housings

Configuration and quotation

Polyester monofilament filter bags are supplied based on application requirements. Selection parameters include:

• mesh size (micron rating)

• bag size

• sealing ring type

• liquid chemistry

• operating conditions

Filtra International provides technical support to ensure correct filter bag selection and reliable performance.