Liquid Filter Bags

Liquid Filter Bags

Filmedia® focused on liquid filter bag manufacturing for over 10 years with ISO, SGS, FDA certifications.

In the modern industrial era, liquid filter bags are widely used in the production process. It is an indispensable liquid filtration facility. Its material is PP, PE, nylon, etc., and it is sealed by heat sealing or sewing. The filter structure is deep and the integrity is good.

Liquid Filter Bags in Filmedia®

  • Five lines of sewing is more fastness.
  • Suitable for different material of rings.
  • More cost saving.
  • Well sealed can avoid missing.
  • Assure high filtration accuracy.
  • More pleasant to look at.
  • Round, V Shape, Flat bottom.
  • Micron ratings range from 0.5 to 800.
  • A wide range of chemical compatibility is available in industry standards and custom sizes.
  • Deep load material with high dirt retention ability.
  • Significantly reduces fiber migration.

Material Selection And Classification Of Liquid Filter Bags

Different environments decide different filter bags. In order to ensure that the accident will not happen to choose the most suitable filter bag for the environment is particularly important. Filmedia® adopts the unique fiber ratio of the production of liquid filter material, it can be Polypropylene, Polyester ,Nylon, PPS Or PTFE. The material good at filter aperture uniform, high filtering accuracy, good filtering effect, long using life. In addition, this bag is applicable to the filtration of medium or low viscosity liquid. It provides a stable and high filtration flow rate to effectively capture a variety of soft or hard impurities.

Our Production Capacity

  • Capacity: 4,000 pcs per day (standard product).
  • Optional Fabric: PE (Polyester), PP (Polypropylene), PA (Nylon), PTFE, etc.
  • Optional Size: 0.5, 1, 5, 10, 25, 50, 80, 100, 125, 150, 200, 250, 300, 350, 400, 500, 600, 800 micron; also can be customized.
  • Optional Process: Sewing or Hot sealing.

Materials for Liquid Filter Bags

Material AvailableMaximum Operating TemperatureMicron Rating (um)
Nylon (NMO)135-149℃5, 10, 25, 50,100, 150 ,200, 300, 400, 50, 600
Polyester (PE)135-162℃0.5, 1, 3, 5, 10, 25, 50, 75, 100, 125, 150, 200, 250,300
Polypropylene (PP)93-104℃0.5, 1, 3, 5, 10, 25, 50, 75, 100,125, 150, 200, 250, 300
Polytetrafluoroethylene(PTFE)250-300℃0.5, 1, 3, 5, 10, 25, 50, 75, 100,125, 150, 200, 250, 300

Characteristic Classification Of Filter Bag Materials

Fiber MaterialPENylonPPPTFE
Abrasion ResistanceVery GoodExcellentVery GoodGeneral
Weakly AcidVery GoodGeneralExcellentExcellent
Strongly AcidGoodPoorExcellentExcellent
Weakly AlkaliGoodExcellentExcellentExcellent
Strongly AlkaliPoorExcellentExcellentExcellent

Bag Bottom Shapes

Round bottom Liquid Filter Bags
Round Bottom
V Shape bottom Liquid Filter Bags
V Shape Bottom
Flat bottom Liquid Filter Bags
Flat Bottom

Sealing Methods

Sewn Details:

  1. Industry standard type.
  2. 5 needle suture.
  3. Strong construction can afford heavy dirt holding capacity.

Welded Details:

  • No needle holes.
  • No thread contamination.
  • Precision bonded cutting of the fabric edges.
  • Maintain same efficiency as filter media.

Sealing Ring Materials

Steel Ring:

  • Galvanized steel (stainless steel option)
  • Sewn into the top of the bag
  • Cotton handle is standard with steel ring configuration
  • Designed to gasket as well as support and secure filter bag when placed into housing
Steel Ring Liquid Filter Bag

Plastic Ring:

  • Molded plastic with built-in handle makes installation and disposal faster, cleaner and less expensive
  • Just drop into housing and push down
  • Smooth plastic designs prevent build-up of contaminants around header
  • Collar is sewn or welded into place to ensure that plastic media remain firmly intact
Plastic Ring Liquid Filter Bag

Other Details


  • Adjustable top diameter to make easy tie on to piping.
  • Great for gravity feed applications.
  • Easy disposal.
  • Economical filter applications.

Application Of Liquid Filter Bags

Our liquid Filter Bags are suitable for liquid precision filtering to remove tiny impurities and bacterium, and are widely used in the following industries.

  • Oil & gas: Produced water filtration; injection water filtration. completion fluid filtration.
  • Metallurgy: Hydraulic and lubrication system filtration.
  • Machining: Machine tool coolant circulating filtration.
  • Food & beverage: Fermented beer filtration, beer final filtration, wine filtration, bottled water filtration, soft drink filtration, juice filtration, dairy filtration.
  • Water treatment: Household drinking water filtration, domestic wastewater filtration.
  • Pharmaceuticals: Ultra-pure water filtration.
  • Marine filtration system: Seawater desalination.