Advantages of FiltEdge Needle Felt Filter Bag
- Application review: Compare fiber, weight, finish, permeability and construction against confirmed operating data.
- Replacement fit: Check bag dimensions, top and bottom design, seam, cage fit and tube-sheet opening against a drawing or sample.
- Project coordination: Pricing, production schedule, documentation and delivery are confirmed for the selected specification and order.
What Is A Needle Felt Filter Bag?
Needle felt filter bag has a three-dimensional filtration structure controlled by a precise needling process. The three-dimensional fibre structure blocks impurities in the liquid and has a highly efficient particle retention capacity.
The Needle felt filter bag is a depth filtration system that offers more consistent filtration accuracy, gentler differential pressure rise, fewer bag changes, and more economical filtration costs than surface filtration.
According to different applications and industrial environments, Needle Felt Filter Bag is available in different acid and alkali resistant, high temperature resistant materials, which can be used in chemical, paint and coating, water treatment, food and beverage, pharmaceutical and other industries.
FiltEdge Needle Felt Filter Bag by Different Materials
According to different complex industrial environments, FiltEdge can provide you with Needle Felt Filter Bag by Different Materials, to meet the filtration requirements in a wide range of temperatures and acid/alkali environments.
Polypropylene Needle Felt Filter Bag has good resistance to acid and alkali and hydrolysis, widely used in industrial water treatment, electroplating treatment and corrosive liquid filtration.
Polyester needle felt filter bag has excellent mechanical tensile strength and abrasion resistance, comprehensive chemical compatibility, and temperature resistance is slightly higher than PP.
Polypropylene Extended Life Needle Felt Filter Bag is made of finer and heavier fibres, which not only have longer service life, but also have four times more stain resistance than ordinary pp Needle Felt Filter Bag.
Combining deep filtration and surface filtration, PTFE membrane surface traps particles and reduces filter bag clogging, and has excellent resistance to strong acids and alkalis, suitable for demanding industrial liquid filtration.
FiltEdge Needle Felt Filter Bag by Top Type
FiltEdge offers Needle Felt Filter Bags in a variety of bag configurations, including pp ring top, ss ring top, flange top, drawstring top, and flat top.
Stainless Steel Ring Top Filter BagSS304/SS316 stainless steel ring top structure is available to improve the mechanical strength of the filter bag.
Flange Top Filter BagReduce liquid bypass, better sealing performance, better mechanical resistance.
Drawstring Top Filter BagSimple mounting structure enables quick installation and replacement of needle felt filter bag.
Flat Ring Top Filter BagFlat ring design helps to position the needle felt filter bag correctly inside the filter, making full use of its filtration area and economical.
Why You Need FiltEdge Needle Felt Filter Bag?
FiltEdge Needle Felt Filter Bag can achieve deep filtration, help you to solve the problems of high pressure drop, unstable filtration accuracy and short life span in industrial filtration system, and reduce the frequency of filter bag replacement.
The three-dimensional fibre structure holds more impurities and reduces the frequency of filter bag replacement.
Provides a uniform three-dimensional filtration structure through precise control of the needling process, ensuring consistent filtration performance across multiple batches.
FiltEdge offers a wide range of fibre materials such as PP, PE, etc. to adapt to high acid and alkali industrial production environments, avoiding early replacement of filter bags due to chemical corrosion.
Uniform fibre distribution ensures zero bypass of the filtered liquid, reduces local clogging of the filter bag and slow rise of differential pressure, resulting in a long service life of the filter bag.
Reduced fibre shedding through surface burnishing treatment, reducing product contamination.
FiltEdge offers a wide range of needle felt filter bags with different sizes, which are compatible with most liquid filter equipment.
Needled felt construction has excellent tensile strength and deformation resistance.
The high dirt-holding capacity and slowly increasing differential pressure greatly increase the service life of the Needle Felt Filter Bag.
Consistent Surface Treatment of Needle Felt Filter Bag
FiltEdge strictly controls the surface treatment process of burnishing and calendering to make the surface of needle felt filter bag more even and flat, avoiding the problems of fibre shedding, rapid increase of differential pressure and unstable filtration accuracy caused by inconsistent surface treatment.
Quality Verification of Needle Felt Filter Bag
Confirm the inspection plan and available material or performance test records for the selected needle felt filter bag. Any required conformity or food-contact documentation must be specific to the relevant materials, manufacturer and intended use; certification is not automatically included.
Customised Needle Felt Filter Bag Based on Your Operating Conditions
FiltEdge will analyse your actual operating conditions, including liquid pH, temperature, flow rate, pressure and other characteristics, to provide you with a customized needle felt filter bag.
Why Choose FiltEdge Needle Felt Filter Bag?
FiltEdge LLC is a U.S. company established in 2023, supported by SFFILTECH in China, established in 2006. Manufacturing support is provided through SFFILTECH in China. Confirm product specifications, available quality documents, pricing and delivery in the quotation. Certificates must be checked for the relevant entity, facility and product. Support is arranged during business hours; any on-site service or warranty terms require separate agreement.
Applications of Needle Felt Filter Bag
FiltEdge Needle Felt Filter Bags are perfectly suited for the food & beverage, water treatment, pharmaceutical and paint, ink & resin industries due to their excellent dirt and chemical resistance, please contact us for the most suitable Needle Felt Filter Bag for your industry.
Needle Felt Filter Bag removes particles and impurities from juices, edible oils and other liquids, and does not cause secondary contamination of the product during filtration, the filtration efficiency can reach 60%-80%.
Needle Felt Filter Bag with excellent dirt-holding capacity is most suitable for the filtration of low-viscosity and medium-viscosity liquids. Its three-dimensional fibre structure can efficiently intercept colloidal suspended particles in viscous liquids, which can be widely used in the filtration of viscous liquids, such as resins, syrups, coatings, and so on.
The filtration precision of Needle Felt Filter Bag is generally between 1-300 microns, which can fully meet the filtration requirements of high-clean liquids, and the uniform distribution of fibres provides a stable flow rate, which is suitable for pre-filtration in pharmaceutical industry. If you have higher precision filtration needs, FiltEdge can customise Needle Felt Filter Bag for you with 0.2-1 micron.
The Needle Felt Filter Bag’s low fibre shedding characteristics and stable filtration performance make it suitable for filtration of ultrapure water (UPW), electrochemical fluids, maintaining ultra-clean process cleanliness while reducing downtime due to clogged filter bags, and improving productivity in electronics manufacturing environments.
Technical Parameters of Needle Felt Filter Bag
Below are the Technical Parameters of FiltEdge Needle Felt Filter Bag for your reference. If you need other detailed information, please contact us. You can also send us the working conditions, FiltEdge will provide you with a condition analysis and customise the right filtration products for you.
- Needle Felt Filter Bag Performance
- Needle Felt Filter Bag Size
| Parameter | Specification | Application-Oriented Note |
| Material | Polypropylene (PP) / Polyester (PE) / PTFE | PP/PTFE for chemical resistance, Polyester for higher temperature than pp |
| Filtration Rating | 1 / 5 / 10 / 25 / 50 / 100 / 200 micron | Balance between filtration efficiency and clogging resistance |
| Size | #1 / #2 / #3 /#4 / #5/custom size | Compatible with most standard and OEM housings |
| Top Type (Ring) | SS Ring / PP Ring / Flat Ring/ Drawstring /Flange Ring | Ensures sealing stability and leakage prevention |
| Operating Temperature | PP: ≤80°C / PE: ≤120°C PTFE: ≤280° | Material-dependent thermal stability |
| Bag Size | Max Flow(m³/h) | Filter Area(㎡) | Volume(L) | Diameter(Inch) | Length(Inch) |
| Size1# | 20 | 0.25 | 8.00 | 7 | 17 |
| Size2# | 40 | 0.50 | 17.00 | 7 | 32 |
| Size3# | 6 | 0.09 | 1.30 | 4 | 9 |
| Size4# | 12 | 0.16 | 2.50 | 4 | 15 |
| Size5# | 18 | 0.20 | 3.80 | 6 | 22 |
Testimonials
Before using FiltEdge’s needle felt filter bag, our filter system needed to be replaced every 2-3 days due to clogging. After using Filtedge’s needle felt filter bags, the bag life has increased by about 35% and the differential pressure is much more stable!
Michael ThompsonProcess Engineer at Chemical Solutions Inc.Previously, we were using filter bags that were so precise that our syrups weren’t clarifying enough, affecting the quality of our beverages. However, FiltEdge helped us to re-match the filtration accuracy, which resulted in a significant improvement in filtration performance and consistency, and a reduction in product rejects of about 23%.
Thomas WeberProduction Supervisor at NordBrew Process Technologies GmbHFiltEdge’s technical team carried out a comprehensive data analysis of our conditions, which helped us to optimise our filtration process and reduce the plant’s maintenance downtime by approximately 28%.
Rajesh KumarMaintenance Manager at AquaPure Water Systems Pvt. Ltd.
Service life varies with temperature, chemistry, moisture, dust abrasiveness, air-to-cloth ratio, cleaning settings, cage condition and maintenance. It should be estimated from actual operating data and inspection history rather than a fixed percentage improvement.
Technical support is coordinated during business hours. Share the operating conditions or issue for review; support scope and timing depend on the request, and continuous performance is not guaranteed.
Usually, you can choose 1-20 micron rating for high purity applications, and 25-200 micron rating for high solids content or pre-filtration applications, depending on the environment. The different operating conditions will determine which degree of filtration is required. Please contact FiltEdge today for an analysis of your actual conditions and a customised filtration solution that best suits your needs.
FiltEdge provides U.S. project communication and replacement coordination, with material and manufacturing support from SFFILTECH in China. Recommendations, documents, pricing, delivery and support scope are confirmed for each project.
Related Products of Needle Felt Filter Bag
Liquid bag filter is the equipment used in conjunction with the liquid filter bag
With excellent acid and alkali resistance, it is one of the most widely used liquid filter bags.
Compared to needle felt filter bag, nylon filter bag realizes stable surface filtration.
Filter cartridges have more efficient filtration accuracy than filter bags.
