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Help CenterNeedle-Punched Filter Bag for Liquid Filtration – 100-200 Micron Range, Rolled Top, 1000mm Length
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Anping County Boli Hardware Wiremesh Products Factory – a trusted manufacturer since 1998 – proudly presents our Needle-Punched Filter Bag for Liquid Filtration. Designed for reliable performance in the 100-200 micron range, these bags feature a rolled top for secure sealing and a standard 1000mm length. With over 20 years of expertise in wire mesh and filtration products, we deliver bags that offer consistent filtration efficiency, high dirt-holding capacity, and long service life. Our factory, located in Hengshui, Hebei, China, exports to over 15 regions worldwide, including North America, Europe, and Southeast Asia, with annual export values exceeding US$5 million.
Each bag is manufactured using advanced needle-punching technology, creating a dense, three-dimensional fiber structure that captures particles effectively while maintaining high flow rates. The 100-200 micron rating makes these bags suitable for a wide range of liquid filtration applications, from industrial wastewater to chemical processing. The rolled top design ensures a leak-proof fit in standard filter housings, reducing bypass and maximizing filtration efficiency.
Key Features & Benefits
- Needle-Punched Construction: Creates a deep, gradient-density filter medium that traps particles throughout the depth, not just on the surface. This extends bag life and reduces replacement frequency.
- 100-200 Micron Precision: Ideal for removing sand, silt, scale, and other suspended solids. The micron range can be customized per your requirements.
- Rolled Top Design: The reinforced rolled top provides a snug, leak-free seal with standard filter vessel gaskets. No additional clamp or adapter needed.
- Standard Length 1000mm: Compatible with most bag filter housings. Custom lengths (e.g., 810mm, 900mm, 1200mm) are available upon request.
- High Chemical Compatibility: Available in polypropylene (PP) or polyester (PE) felt. PP resists acids and alkalis, while PE handles higher temperatures and organic solvents.
- Excellent Dirt-Holding Capacity: The thick felt structure can hold up to 3-5 times more contaminants than surface-type filters, minimizing downtime.
- Easy Installation & Disposal: Lightweight and flexible, these bags can be installed in seconds. They are incinerable (for polypropylene) or recyclable, reducing waste disposal costs.
Technical Specifications
| Material | Polypropylene (PP) or Polyester (PE) – needle-punched felt |
| Filtration Rating | 100-200 microns (nominal) |
| Length | 1000 mm (standard) – other lengths customizable |
| Top Style | Rolled top (also available: plastic ring, metal ring, snap ring) |
| Max Operating Temperature | PP: 90°C (194°F) / PE: 150°C (302°F) |
| Seam Type | Ultrasonic welded (no thread contamination) or sewn with PTFE thread – optional |
| Weight per Bag (approx.) | 0.25 – 0.35 kg (depending on material density) |
| Packaging | 100 bags per carton, or per customer request |
Why Choose Our Needle-Punched Filter Bags?
Unlike woven or mesh bags, needle-punched felt provides a three-dimensional filtration matrix. This means particles are captured inside the felt, not just on the surface – leading to longer service life and lower pressure drop. Our rolled top ensures a tight seal, eliminating bypass that can ruin downstream equipment. The 100-200 micron range is a versatile choice for many industries, including:
- Water treatment (municipal & industrial)
- Chemical processing (acids, solvents, paints)
- Food & beverage (edible oils, syrups, beverages)
- Pharmaceuticals (intermediate filtration)
- Petrochemicals (coolants, lubricants, fuels)
- Metalworking (cutting fluids, plating solutions)
Customization Options: We understand that every application is unique. We can adjust the micron rating (from 1 to 1000 microns), length (from 300mm to 1500mm), top style (plastic ring, metal ring, snap ring, flanged), and material (polypropylene, polyester, nylon, etc.). Minimum order quantities are flexible, and we offer free samples for qualified buyers.
Trust & Reliability
Anping County Boli Hardware Wiremesh Products Factory has been a leading manufacturer for over 25 years. Our factory covers an area of 10,000+ square meters, equipped with advanced needle-punching production lines and automated cutting/sealing machines. We maintain strict quality control at every stage – from raw material inspection to final packaging. Our annual export value exceeds US$5 million, serving clients in North America, South America, Europe, Africa, the Middle East, and Asia. We ship from multiple ports (Tianjin, Qingdao, Shanghai, Foshan) to ensure timely delivery.
Customer Testimonials: “We have been using Boli’s filter bags for over three years. The consistent quality and competitive pricing help us maintain our production efficiency. The rolled top design fits perfectly into our housings, and the 100-micron bags eliminate our scale problems.” – A water treatment plant in the USA. “Quick response and reliable shipping – Boli is our go-to supplier for liquid filtration bags.” – A chemical distributor in Germany.
Contact us today to request a quote, discuss your specific micron requirements, or ask for free samples. Our team of filtration experts will help you choose the right bag for your process. We look forward to building a long-term partnership with you.
Frequently Asked Questions (FAQ)
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Q: What is the difference between needle-punched and woven filter bags?
A: Needle-punched felt is made by mechanically interlocking fibers, creating a dense, random fiber matrix. This provides depth filtration, capturing particles throughout the material. Woven bags are surface filters, where particles are trapped on the surface. Needle-punched bags generally offer higher dirt-holding capacity and lower pressure drop for the same micron rating. -
Q: Can I use these bags for high-temperature liquids?
A: Yes, depending on the material. Polyester bags can handle up to 150°C (302°F), while polypropylene is limited to 90°C (194°F). If you need higher temperature resistance, we can also supply Nomex or PTFE felt bags – please inquire. -
Q: What is the recommended flow rate for 100-200 micron bags?
A: Typical flow rate is between 1 and 5 m³/h per bag (depending on viscosity and particle load). For precise sizing, we recommend providing your liquid viscosity, solid content, and required flow rate – our engineers can calculate the optimal number of bags. -
Q: How do I install the rolled top bag?
A: Simply slide the rolled top over the filter vessel’s sealing ring. The rolled edge creates a tight seal against the gasket. No tools or additional clamps are required. Ensure the bag is fully seated before closing the vessel. -
Q: Are these bags reusable?
A: Needle-punched filter bags are typically disposable. However, some applications allow cleaning by backwashing or washing with water/detergent. For high dirt loads, we recommend using them as single-use to maintain consistent filtration performance. -
Q: Can you provide custom micron ratings?
A: Absolutely. We can produce bags with micron ratings from 1 micron to 1000 microns. Common ranges include 1-5, 5-10, 10-25, 25-50, 50-100, 100-200, 200-400, and 400-1000 microns. Let us know your target particle size. -
Q: What is the minimum order quantity (MOQ)?
A: Our MOQ is 50 bags for standard sizes. For custom sizes or materials, MOQ may be higher. We also offer small trial orders for testing purposes – please contact us. -
Q: How do you ensure product quality?
A: We conduct raw material testing (fiber quality, weight per square meter), in-process inspection (fiber distribution, thickness), and final product testing (micron rating, seam strength, burst pressure). Samples are retained for each batch. We also offer third-party testing upon request.
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