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| By using the nonwoven needling process, polyester staple fibers are interlaced and laid in a web and consolidated onto the polyester base fabric to form a three-dimensional mesh structure filter felt. | |||||||||
Alternative Names and Product Positioning
Known interchangeably as Polyester Felt Filter Bags and Industrial Polyester Dust Collection Bags, these filtration solutions set the industry standard for cost-effective, high-performance dust removal. Constructed from 100% virgin polyester fibers, the bags balance filtration efficiency, mechanical strength, and affordability, making them the most widely used filter media in general industrial applications.
Operating within a temperature range of -40°C to 135°C (-40°F to 275°F) with short-term surge tolerance up to 149°C (300°F), these bags excel in dry to moderately humid environments where chemical exposure is minimal. Their multi-layered melt-blown construction ensures exceptional particle capture while maintaining low airflow resistance.
Core Features
Efficiency Rating: Achieves >99% particle retention for 4–40μm particles, meeting N10 and M13 filtration standards for industrial dust control.
Dirt-Holding Capacity: 0.55 lbs (250g) per bag, enabling extended service intervals in medium-dust environments.
Mechanical Strength: Tensile strength of 1800N/5cm in warp direction, resisting tearing during installation and pulse-jet cleaning.
Surface Treatment Options: Glazed, singed, or calendared finishes to optimize dust cake release based on particle characteristics.
Maximum Continuous Temperature: 135°C (275°F)
Moisture Resistance: Hydrophilic base material with optional water-repellent coating for 60–80% relative humidity environments.
Pressure Drop: Initial differential pressure <0.5 bar at 1.5 m/min airflow velocity.
Typical Appliaction Scenarios
High-Efficiency Polyester Filter Bags are versatile across numerous industries:
Woodworking: Captures sawdust and wood particles in furniture manufacturing, preventing equipment wear and fire hazards.
Metal Fabrication: Filters steel and aluminum dust from grinding and polishing operations, protecting worker health.
Food Processing: Manages grain, sugar, and spice dust in packaging facilities, complying with FDA food contact standards.
Mining and Minerals: Controls silica dust from crushing and screening operations, aiding compliance with OSHA respirable dust limits.
Product Advantages (Compared with Competitors)
These polyester bags offer compelling benefits over specialty materials:
Cost Efficiency: 50–60% lower upfront cost than PTFE or PPS filters, ideal for high-volume, low-corrosion applications.
Easy Maintenance: Simple replacement process requiring no special tools, reducing downtime during changeouts.
Broad Compatibility: Works with all pulse-jet, reverse-air, and shaker baghouse systems, minimizing equipment modifications.
Sustainability: Recyclable through industrial textile recycling programs, reducing landfill waste compared to non-recyclable filter media.
Customization Process
Our tailored approach ensures optimal dust removal performance:
Dust Analysis: Lab testing of dust samples determines particle size distribution and recommends optimal pore size (1–200μm).
Engineering Design: Customizes dimensions (diameters 110mm–300mm, lengths 1000mm–8000mm) and seam type (stitched or welded).
Surface Treatment Selection: Recommends singed finish for fine dust or glazed finish for sticky particles based on application needs.
Performance Validation: Prototypes undergo 100-hour airflow testing to verify pressure drop and filtration efficiency.
Production: Automated manufacturing ensures consistent quality, with capacity for 5000+ bags per week and JIT delivery options.
