Acrylic Needle-Punched Dust Filter Bags

2.1.2 Acrylic Needle-Punched Dust Filter Bags
The acrylic needle-punched filter bag is a medium-temperature filtration material made from polyacrylonitrile fiber via a needle-punching process.
①Performance Characteristics:Temperature resistance（Continuous use:≤130℃;short-term exposure: 160℃.）；Hydrolysis resistance (humidity ≤80%);Abrasion resistance and weak acid/alkali resistance (pH 5–9);Filtration efficiency ≥99%, capturing dust particles >3 μm.
②Applications:Metallurgical mineral powder collection;Chemical drying kilns handling humid or weakly corrosive flue gas (temperature ≤130℃);Replaces polyester filter bags in scenarios with frequent dew point fluctuations and anti-condensation requirements, balancing cost-effectiveness and stability.
③Limitations:Avoid high-temperature, strong acid/alkali, or organic solvent environments.