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Welded Seam Filter Bags

Polyester (PE) Welded Filter Bags

Polyester (PE) welded filter bags are designed for higher temperature and abrasion resistance compared to polypropylene. Constructed from polyester felt with strong welded seams, they offer reliable depth filtration and durability. These bags are widely used in demanding industrial processes involving hot liquids, solvents, and abrasive particles.

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Operation

Liquid passes from the inside of the bag to the outside, capturing fine and coarse contaminants throughout the polyester felt. Welded seams prevent leakage and fiber migration, ensuring a clean and efficient filtration process.

  • Polyester construction – strong, durable, and abrasion-resistant

  • Higher temperature handling than PP bags (up to 135°C)

  • Welded seams for leak-proof operation

  • Suitable for solvents, hydrocarbons, and aggressive fluids

  • Depth filtration with high dirt-holding capacity

Standard Sizes:

  • Size #1: Ø7” x 16” length

  • Size #2: Ø7” x 32” length

  • Size #3: Ø4” x 8” length

  • Size #4: Ø4” x 14” length

Custom Options:

  • Micron ratings: 1–200 µm

  • Multi-layer extended life design

  • Collar options: PE flange, stainless steel ring

  • Material: Polyester (PE) Felt

  • Micron Rating: 1–200 µm nominal

  • Operating Temperature: Up to 135°C

  • pH Range: 4–12

  • Max. Differential Pressure: 2.5 bar (36 psi)

  • Construction: Welded seams, depth filtration

  • Hot liquid filtration in industrial processes

  • Petrochemical and solvent filtration

  • Resin, paint, and ink manufacturing

  • High-temperature process water filtration

  • Mining slurry clarification

  • Steel and cement industry process fluids

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