Needle Punched Felt
Nomex Needle Felt Filter Cloth
Aramid/Nomex needle felt is a high performance filter material used in industrial filtration applications requiring high temperature, chemical resistance and tensile strength.
Learn About Nomex/Aramid Filter Bags.
- Optional Width: Down below 2.2m.
- Optional Thickness: 1.2mm ~ 20mm.
- Optional Weight: 300g/m² ~ 650g/m² (±8%)
- Different treatment methods: waterproof and oil-proof treatment, PTFE coating, PTFE impregnation treatment, etc.
- Capacity: 15,000 square meters per day (standard Nomex(Aramid) product)
Learn About Nomex/Aramid Filter Bags.
Product Description
The advantages of aramid/nomex needle filter felt cloth mainly include high temperature resistance, dimensional stability, fire retardant, chemical corrosion resistance and good wear resistance.
- High temperature resistance: Nomex needle-punched felt can be used in various dust collectors within 200℃, can work continuously at a temperature of 180℃, and the instantaneous working temperature can reach 220℃.
- Dimensional stability: At a high temperature of 230℃, the expansion rate of aramid needle-punched felt is only 1%.
- Fire retardant: It starts to decompose and carbonize at 400℃, and the limiting oxygen index (LOI) is 30. It does not spontaneously ignite or support combustion.
- Chemical corrosion resistance: It is not easy to react with chemicals such as acids and alkalis.
- Wear resistance: Nomex needle-punched felt also has good wear resistance and can adapt to various types of high-efficiency and high-intensity filtering work.
- In addition, nomex needle-punched felt also has the advantages of good air permeability, high dust collection efficiency, large dust holding capacity, and long service life.
Processing and Surface Treatment
Philite® uses high-quality aramid fibers as raw materials, adopts international advanced standards, and uses advanced production equipment to manufacture aramid high-temperature resistant needle-punched filter felts. The aramid fiber filter material is combined with the surface layer and the base cloth layer through multiple needle punching, and then after singeing and calendering, the whole is impregnated with PTFE (polytetrafluoroethylene), and then its surface is sintered at high temperature to form a dense protection membrane. Thereby greatly improving the overall performance of the filter material.
Physical and Chemical Properties of Aramid/Nomex Needle Felt Filter Cloth
| Product name | Aramid needle felt 500 g/m² | |
| Product Code | ES-AMD500N | |
| Physical properties | ||
| Fiber | Aramid staple fiber | |
| Scrim | Aramid staple yarn | |
| Weight | g/m² | 500 |
| Thickness | mm | 2.2 |
| Width | m | ≤2,2 |
| Finish treatment | Singeing, Calendering, Heat setting | |
| Air permeability | l / m2 / s @200pa | 250 |
| Tensile strength | Warp | 800 |
| Weft | 900 | |
| Tensile elongation | Warp | 20 |
| Weft | 30 | |
| Temperature | ||
| Continuos temperature | C° | 204 |
| Instant temperature | C° | 240 |
| Chemical Properties | ||
| Anti-acid | Good | |
| Anti-alkali | Good | |
| Anti-abrasion | Excellent | |
| Hydrolysis stability | Good | |
Specifications of Aramid Fiber
| Aramid Fiber Specification | ||||
| Type | A | Color | white | |
| Danier | 22dtex | Length | 51mm | |
| Quantity | 3025.1kgs | |||
| Test Items | Units | Test Results | ||
| Max. | Min. | Ave. | ||
| Txtre | dtex | 2.38 | 2.33 | 2.36 |
| Tensile Strength | cN/dtex | 3.9 | 3.7 | 3.8 |
| Elongation | % | 42.23 | 38.34 | 39.91 |
| Staple Length | mm | 54 | 48 | 52 |
| Oil Pick-Up | % | 0.62 | 0.54 | 0.58 |
| Shrikage at 300℃ | % | 2.9 | 1.6 | 2.2 |
Application of Aramid/Nomex Needle Felt Filter Cloth
- High-temperature flue gas filtration: It is used in industrial flue gas treatment systems, especially in industries such as cement production, metallurgical processes, and waste incineration, to filter solid particles in high-temperature flue gas.
- Chemical industry: Due to its good chemical stability and corrosion resistance, aramid fiber is widely used in the filtration process for treating corrosive gases and chemicals in the chemical industry.
- Environmental protection: In the environmental protection field, it is used in industrial waste gas treatment systems to help filter and capture particulate matter and pollutants in industrial waste gas, protect the environment and improve air quality.
- Automotive industry: In the automotive industry, aramid needle felt filter cloth is used in vehicle exhaust treatment systems to help reduce emissions and meet emission standards.
