Liquid Filter Bag(Micron Filter Bag)

Specialized in manufacturing NEEDLE FELT BAG and WOVEN CLOTH BAG;

Daily capacity: 4,000 pcs per day (standard product)

Common needle felt: PE (Polyester), PP (Polypropylene), PA (Nylon); Nomex, PTFE and etc.

Optional size: 4 standard models; accept customization.

Optional process: Sewing or Hot sealing

Filtration accuracy:1μm-500μm

Customization accepted.

Ask for free sample, please click here.


Optional standard micron:

Grade Level 1 Level 2 Level 3 Level 4 Level 5
micron(μm) 0.5 1 5 10 25 50 80 100 125 150 200 250 300 350 400 500 600 800

Optional Felt Bag Seam Styles:

Sewn Details: 1.Industry standard make 2.5 line system when sewing 3.Strong construction for that heavy dirt holding capacity


Welded 1.No needle holes 2.No thread contamination 3.Precision bonded cutting of the fabric edges 4.Maintain same efficiency as filter media

Optional Rings

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

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

Draw String

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


4 types standard liquid filter bag: (accept customization)

Model Filter area
(m²/ pcs)
Volume (L) Diameter Length
cm inch cm inch
Type 1 0.19 7.9 17.8 7 40.65 16
Type 2 0.41 17.3 17.8 7 81.3 32
Type 3 0.05 1.4 10.2 4 20.9 8.25
Type 4 0.09 2.5 10.2 4 35.5 14

Chemical properties Comparison:

Fabric Abrasion resistance Anti weak acid Anti strong acid Anti weak alkali Anti strong alkali Temperature (℃)
PE (polyester) Very good Very good Good Good Poor 130-150
PP (polypropylene) Very good Excellent Excellent Excellent Excellent 90-110
PA (nylon) Excellent Normal Poor Excellent Excellent 135-149

Please inform us the detail of the environment

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. Temperature, humidity, PH, gas composition and so forth, the more detail the better. Our client manager prepared a questionnaire, just  fill it then we can give you the suitable products.

Ensure standardized installation

Meanwhile, the installation process is also particularly important, non-standard installation is a major cause of accidents. Be sure to check the situation after the filter bags installed.

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