Antistatic needle punched filter felt is usually used in situations where it is necessary to filter tiny particles in the air or liquid, while also requiring the product to prevent static electricity accumulation. This type of filter felt usually uses special fiber materials or adds antistatic agents to ensure that during the filtration process, static electricity will not absorb more particles or cause harm to the product.
Its primary function lies in:
- Minimize charge generation.
- Enable rapid charge dissipation.
- Maintain surface resistance within the static-dissipative range.
Learn more about: Anti-static Filter Bags
Description
Filmedia®, as one of the leading antistatic needle felt manufacturers in China, is committed to the development and production of high-performance filtration materials. By adopting advanced anti-static treatment technology, our products offer enhanced safety and reliability, especially in high-dust and potentially explosive environments.
Why use Anti-static Needle Felt Filter Fabric？
Usually, when the concentration of industrial dust reaches a certain level (that is, the explosion limit), it is very easy to cause explosion and fire if it encounters factors such as electrostatic discharge sparks, such as: flour dust, chemical dust, coal dust, etc. If these dusts need to be collected by fabric bags, the manufactured filter bags are required to have anti-static function. In addition to the process of producing ordinary needle felt, the production of antistatic filter material also requires the incorporation of conductive fibers into the warp yarn of the base fabric for the production of needle felt or the mixing of conductive fibers into chemical fibers. The working principle of antistatic needle-punched felt is to incorporate conductive fibers (such as carbon fibers or stainless steel fibers) into a conventional fiber matrix or apply antistatic surface treatments to form a continuous or dispersed conductive network. During filtration, static electricity is generated through friction between dust particles and fibers; however, these charges are quickly conducted away through the conductive pathways and safely discharged to the grounded filter cage or equipment. This prevents the accumulation of static electricity, reduces the risk of dust explosions, and improves filtration efficiency and operational stability.
Comparison of properties of different anti-static needle felt
| Material | Conductivity | Temperature Resistance | Chemical Resistance | Abrasion Resistance | Durability |
| Polyester (PET) with Conductive Fibers | High | Up to 150°C (302°F) | Good | High | High |
| Aramid (Nomex) | Moderate | Up to 200*C (392°F) | Good | High | High |
Anti-static Polyester Needle Punched Felt
Anti-static polyester needle-punched felt is characterized by its resistance to acids and weak alkalis, oxidation resistance, high tensile strength, excellent resistance to humid heat, resistance to mildew, and suitability for operation at elevated temperatures. Depending on specific application requirements, anti-static polyester needle-punched felts are manufactured by combining raw materials of varying specifications with diverse fabric structures, thereby yielding a range of products distinguished by their unique filtration performance and physical appearance.
01. Stripe Line Polyester Anti-static Needle Felt
Physical and Chemical Properties
| Product name | Anti-static polyester needle felt 500 g/m²(line) | |
| Product Code | ES-ASPE500L | |
| Physical properties | ||
| Fiber | Polyester staple fiber | |
| Scrim | Polyester staple yarn, electric yarn | |
| Weight | g/m² | 500 |
| Thickness | mm | 1.8 |
| Width | m | ≤2,2 |
| Finish treatment | Singeing, Calendering, Heat setting | |
| Air permeability | l / m2 / s @200pa | 200 ~ 350 |
| Tensile strength | Warp | 1100 |
| Weft | 1200 | |
| Tensile elongation | Warp | 15 |
| Weft | 20 | |
| Temperature | ||
| Continuos temperature | C° | 130 |
| Instant temperature | C° | 150 |
| Chemical Properties | ||
| Anti-acid | Middle | |
| Anti-alkali | Middle | |
| Anti-abrasion | Excellent | |
| Hydrolysis stability | Middle | |
02. Blending Fiber Polyester Anti-static Needle Felt
Physical and Chemical Properties
| Product name | Anti-static polyester needle felt 500 g/m² (blend fiber) | |
| Product Code | ES-ASPE500B | |
| Physical properties | ||
| Fiber | Polyestser staple fiber, copper coated fiber | |
| Scrim | Polyestser filament yarn | |
| Weight | g/m² | 500 |
| Thickness | mm | 1,8 |
| Width | mm | ≤2,2 |
| Finish treatment | Singeing, Calendering, Heat setting | |
| Air permeability | l / m2 / s @200pa | 200 ~ 350 |
| Tensile strength | Warp | 1100 |
| Weft | 1200 | |
| Tensile elongation | Warp | 15 |
| Weft | 20 | |
| Temperature | ||
| Continuos temperature | C° | 130 |
| Instant temperature | C° | 150 |
| Chemical Properties | ||
| Anti-acid | Middle | |
| Anti-alkali | Middle | |
| Anti-abrasion | Excellent | |
| Hydrolysis stability | Middle | |
03. Cross Line Polyester Anti-static Needle Felt
Physical and Chemical Properties
| Product name | Anti-static polyester needle felt 500 g/m² (cross line) | |
| Product Code | ES-ASPE500X | |
| Physical properties | ||
| Fiber | Polyester staple fiber | |
| Scrim | polyester staple yarn, cross electric yarn | |
| Weight | g/m² | 500 |
| Thickness | mm | 1,8 |
| Width | m | ≤2,2 |
| Finish treatment | Singeing, Calendering, Heat setting | |
| Air permeability | l / m2 / s @200pa | 240 |
| Tensile strength | Warp | 1100 |
| Weft | 1200 | |
| Tensile elongation | Warp | 20 |
| Weft | 25 | |
| Temperature | ||
| Continuos temperature | C° | 130 |
| Instant temperature | C° | 150 |
| Chemical Properties | ||
| Anti-acid | Middle | |
| Anti-alkali | Middle | |
| Anti-abrasion | Excellent | |
| Hydrolysis stability | Middle | |
Anti-static Aramid Needle-punched Felt
Anti-static aramid needle-punched felt filter cloth is a high-performance filter material designed for high-temperature, flammable, and explosive dust applications. It features high-performance anti-static properties, preventing static electricity buildup on dust and fibers during filtration, potentially leading to sparks or electrical failures. It is particularly suitable for industrial environments requiring high temperatures or where there is a risk of sparks. It is both heat-resistant and flame-retardant.
Physical and Chemical Properties
| Product name | Anti-static Aramid needle felt 500 g/m², cross line type | |
| Product Code | ES-ASAMD500X | |
| Physical properties | ||
| Fiber | Aramid staple fiber | |
| Scrim | Aramid staple yarn, cross electric 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 | |
Applications
Antistatic needle-punched felt is mainly used in dust collection filter bags, covering the following industries:
- Cement industry: raw material grinding, packaging and conveying.
- Smelting plants: sintering machines, continuous casting.
- Mines: limestone powder collection.
- Non-ferrous metal plants: alumina conveying, aluminum electrolysis.
- Furniture factories: sanding workshops.
- Grain processing: dust removal.
- Pharmaceutical and other industries: dust control.
