Aramid Needle Felt Filter Cloth
Aramid needle felt filter cloth, also known by the brand name Nomex, is a high-temperature resistant non-woven fabric typically used in filter bags for industrial air filtration systems.
Product Details
Aramid Needle Felt Filter Cloth is a type of non-woven filter media constructed from aramid fibers, which are synthetic fibers known for their heat resistance and strength. The term “needle felt” refers to the process by which the cloth is made; it is produced by a needling process that mechanically entangles fibers to create a dense, porous fabric. The “aramid” part of the name refers to the class of synthetic fibers used in the manufacture of the cloth, which includes brands like Nomex and Kevlar.
The properties of Aramid Needle Felt Filter Cloth make it particularly suitable for use in high-temperature applications. Here are some of the key characteristics:
- Temperature Resistance: It can withstand continuous operating temperatures of up to 200-220 degrees Celsius, which makes it suitable for hot gas filtration.
- Chemical Resistance: Aramid fibers are resistant to a wide range of chemicals, ensuring durability in harsh environments.
- Dimensional Stability: It maintains its shape and size under high temperatures and stress.
- Fire Retardancy: Aramid fibers do not readily ignite or melt, adding a level of safety in applications where there is a risk of fire.
- Strength: Aramid fibers are known for their high strength-to-weight ratio, which adds to the durability of the filter cloth.
Applications for Aramid Needle Felt Filter Cloth typically include industries where hot gases need to be filtered, such as in cement production, asphalt plants, metal processing, and power generation. The cloth is often made into filter bags used in baghouse dust collectors, where it captures and removes particulate matter from industrial exhaust streams.Play
| Technical Parameters | ||||||
| Gram Weight (g/m²) | Thickness(mm) | Air Perm (m³/m².min) | Breaking Strength(N/20X5cm) | Elongation at Break(%) | ||
| Warp Direction | Weft Direction | Warp Direction | Weft Direction | |||
| 550 | 2.2 | 10-15 | ≥800 | ≥1000 | ≤30 | ≤45 |
| Continuous Temperature(°C) | Instantaneous Temperature(°C) | Acid Resistance | Alkali Resistance | Abrasion Resistance | Hydrolytic Stability | Post-Processing Method |
| 204 | 250 | Normal | Good | Good | Poor | Singeing or Calendering or PTFE Soak or Heat Setting or Laminating |
Aramid Needle Felt Filter Cloth has several features that make it an excellent choice for use in industrial filtration applications, especially where high temperature and chemical resistance are required. Here are some of the key features:
- High-Temperature Resistance: It can withstand continuous exposure to high temperatures, typically up to 200-220 degrees Celsius, and sometimes even higher for short periods.
- Good Chemical Resistance: Aramid fibers are resistant to many chemicals, making aramid filter cloths suitable for challenging chemical environments.
- Dimensional Stability: The material maintains its shape and dimensions under high stress and temperature, which is critical for maintaining the integrity of the filter bags during operation.
- Abrasion Resistance: Aramid fibers have good resistance to abrasion, which is important in applications where the filter cloth may come into contact with rough particles.
- Fire Retardant: The cloth is inherently flame-resistant and does not support combustion, which is critical for safety in industries prone to fire hazards.
- High Strength: Aramid fibers possess high tensile strength, contributing to the durability and longevity of the filter cloth.
- Thermal Stability: Apart from being heat resistant, aramid filter cloths have good thermal stability, meaning they retain their strength and flexibility when exposed to heat.
- Low Shrinkage: Aramid filter cloths exhibit minimal shrinkage at high temperatures, which helps maintain the fit and performance of filter bags.
- Good Filtration Efficiency: The needle felt construction offers an excellent filtration area and depth, providing efficient particle capture and good air permeability.
- Long Service Life: Due to their durability and resistance to harsh conditions, aramid filter cloths typically have a longer service life compared to some other filter materials.
Because of these features, Aramid Needle Felt Filter Cloth is widely used in industries such as cement, waste incineration, asphalt mixing, iron and steel, and power generation, where filters are required to perform under demanding conditions.