Manufacturing and Properties:

• Material: These bags are crafted from 100% polyester fibers that are needle-punched to create a durable, non-woven felt fabric. 
• Needle Punching: The polyester fibers are interlaced and compacted using needle-punching process, creating a strong and porous filter medium. 
• Treatments:

  The felt fabric can undergo various treatments, including:

  • Water and Oil Repellency: Impregnation with a special resin to prevent moisture and oil from penetrating the filter.
  • Anti-static: To prevent the buildup of static electricity and dust attraction. 
  • PTFE Membrane: A thin layer of PTFE (Teflon) can be added for enhanced filtration efficiency and durability. 
• Construction: The fabric is cut and sewn into bags, with a flexible ring sewn to the top for easy attachment to the filter cage. 
• Durability: These bags are known for their resistance to breaking, tearing, and abrasion. 
• Versatility: Polyester needle felt is versatile and widely used for various applications, including dust removal in industries like mining, cement production, and steel making. 
• Temperature Resistance: Polyester filter bags can typically withstand temperatures up to 150°C in dry conditions, but moisture can reduce their performance. 

Applications:

• Mining and Crushing: Used for separation and purification of dust and particles in these industries.
• Baghouse Systems: Common in baghouse systems for dust collection and filtration. 
• General Filtration: Used in various applications for filtering air, liquids, and gases.
• Food Grade Applications: Some polyester felt materials are FDA compliant for use in food processing. 

Advantages:

• Cost-Effective: Polyester felt is a relatively inexpensive filter medium. 
• High Filtration Efficiency: The needle-punched construction and various treatments allow for efficient dust and particle removal.
• Durability: Resistant to tearing, abrasion, and chemicals.
• Versatile: Suitable for a wide range of applications and industries.