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A Comprehensive Guide to Non-Woven Filter Bags

Feb 12 2023

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Dust collector filter bags play a crucial role in optimizing filtration processes. Crafted from premium virgin needle felt fabric, these bags exhibit remarkable efficiency in reducing dust emissions.

These filter bags are installed within dust collector systems, supported by filter cages. When contaminated air comes into contact with these bags, solid particles are trapped on the outer surface, allowing clean air to pass through. The collected particles are dislodged and gathered at the base during pulsing.

Non-woven filter bags can be fashioned from various materials, including polyester, polyphenylene sulfide (PPS), meta-aramid, homopolymer, and even polypropylene.

If you're considering purchasing non-woven filter bags but are unsure about the ideal material for your specific application, read on for valuable insights.

Polyester:

Polyester stands out as one of the most durable and robust fabrics, composed entirely of virgin polyester filaments. Its versatility makes it suitable for a wide range of applications, such as medical facilities, construction sites, cement plants, power plants, and aluminum facilities. Polyester is well-suited for temperatures ranging from 140-150 degrees Celsius, and various treatment options are available to enhance its properties, including antistatic treatment, oil and water-repellent coating, flame retardancy, and PTFE finishing.

Homopolymer:

Homopolymer is preferred in ceramic and aluminum plants, particularly in moist environments, serving as an excellent alternative to polyester when hydrolysis is a concern. Blends of acrylic and polyester are also available. Homopolymer performs well within temperatures of up to 125 degrees Celsius, with various treatment options to tailor its characteristics to specific needs, such as antistatic treatment, oil and water repellent coating, flame retardancy, and PTFE finishing.

Meta-Aramid:

Meta-aramid is a flame-resistant, high-temperature fabric that boasts excellent resistance to ignition and a wide range of chemicals, making it suitable for modern industrial applications. It thrives in high-temperature settings, withstanding temperatures of 200-220 degrees Celsius. This fabric exhibits outstanding chemical resistance to organic solvents and hydrocarbons and offers high tensile strength. However, it may have a reduced lifespan when exposed to sulfur dioxide or sulfur trioxide. Various treatment options are available to further enhance its properties, including antistatic treatment, oil and water-repellent coating, flame retardancy, and PTFE finishing.

Polyphenylene Sulfide (PPS):

Polyphenylene sulfide, commonly known as Ryton or PPS, is highly resistant to acids, alkalis, and organic solvents, and offers flame and hydrolysis resistance. This fabric is suitable for industries where environmental conditions fluctuate. PPS boasts high tensile strength and mechanical stability, withstanding temperatures of up to 190-200 degrees Celsius. Similar to other fabrics, PPS can undergo various treatments, such as antistatic treatment, oil and water-repellent coating, flame retardancy, and PTFE finishing.

Still uncertain about the ideal fabric for your application? Contact our team of expert engineers at mmp to receive immediate and sustainable solutions.