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Anping County Boli Hardware Wiremesh Products Factory, a trusted manufacturer since 1998, proudly presents our Polyester Needle Felt Triangular Filter Bag — a high-performance solution for pulse dust collectors. With a basis weight of 500 g/m² and a continuous operating temperature resistance of up to 150°C, this filter bag is engineered to efficiently capture fine particulate matter in demanding industrial environments. Our decades of expertise in wire mesh and filtration products ensure that every bag delivers consistent quality, durability, and reliable dust removal performance.
The triangular shape design optimizes the filter area within the collector housing, allowing for higher dust loading capacity and improved cleaning efficiency during pulse jet regeneration. Made from premium polyester needle felt, the bag provides excellent chemical resistance against acids, alkalis, and organic solvents, making it suitable for a wide range of applications including cement, steel, chemical processing, power generation, and food processing industries.
Key Features & Technical Specifications
- Material: 100% polyester needle felt — high tensile strength, low elongation, and excellent dimensional stability.
- Weight: 500 g/m² (±5%) — balances filtration efficiency and air permeability for optimal performance.
- Temperature Resistance: Continuous 150°C, surge up to 170°C — handles hot exhaust gases without degradation.
- Shape: Triangular (custom dimensions available) — maximizes filter surface area and reduces pressure drop.
- Filtration Efficiency: Typically ≥99.5% for particles ≥1 micron (depending on dust characteristics).
- Finishing: Singed, calendered, or heat-set surface treatment available upon request to reduce dust cake adhesion.
- Seam Construction: Ultrasonic welded or high-strength polyester thread stitching for leak-proof performance.
- Application: Pulse jet dust collectors, baghouse filters, and industrial ventilation systems.
Technical Parameters (Reference)
| Parameter | Typical Value | Remarks |
|---|---|---|
| Basis Weight | 500 g/m² | Customizable from 400–600 g/m² |
| Thickness | 2.0–2.5 mm | Depends on processing |
| Air Permeability | 150–200 dm³/m²/s @ 200 Pa | Adjustable via finishing |
| Breaking Strength (MD) | ≥900 N/5cm | Machine direction |
| Breaking Strength (CD) | ≥700 N/5cm | Cross direction |
| Elongation at Break (MD) | ≤25% | Typical |
| Operating Temperature | 150°C (continuous) | Surge: 170°C |
Advantages for Your Business
- Enhanced Dust Collection Efficiency: The triangular geometry increases the effective filtration area compared to standard round bags, resulting in lower pressure drop and longer bag life.
- Cost-Effective Operation: Higher dust loading capacity reduces the frequency of pulse cleaning cycles, saving compressed air and energy costs.
- Broad Chemical Resistance: Polyester needle felt withstands most acidic and alkaline environments, ensuring reliable performance in harsh industrial settings.
- Customizable Dimensions: We offer tailor-made lengths, circumferences, and top/bottom ring styles to fit your existing collector system.
- Quick Delivery: As a manufacturer with 25+ years of experience, we maintain a large inventory of raw materials and can fulfill orders efficiently.
Our triangular filter bags are designed for easy installation and removal. The reinforced top cuff and bottom enclosure prevent leakage and maintain structural integrity during pulse cleaning. The 500 g/m² density provides an optimal balance between filtration performance and mechanical strength, making these bags suitable for continuous operation in temperatures up to 150°C.
Trust & Reliability — Why Choose Us
Anping County Boli Hardware Wiremesh Products Factory has been a leading manufacturer of wire mesh and filtration products since 1998. With an annual export value of US$5 million – US$10 million, we serve clients across North America, South America, Europe, Asia, Africa, and Oceania. Our products are shipped from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring timely delivery worldwide.
We strictly control every production stage — from raw material selection to final inspection — to ensure consistent quality. Each filter bag is individually tested for dimensional accuracy, seam strength, and dust removal performance. Our team of experienced engineers is always available to provide technical support and recommend the optimal filter media for your specific application.
Contact us today to discuss your dust collection requirements. We offer free samples, competitive pricing, and customized solutions to help you achieve cleaner air and lower operating costs.
Frequently Asked Questions (FAQ)
Q1: What is the maximum continuous operating temperature of this filter bag?
A: The polyester needle felt can withstand a continuous temperature of 150°C, with peak surges up to 170°C. For higher temperatures, consider our Nomex or PTFE options.
Q2: Can the triangular shape fit into my existing pulse jet collector?
A: Yes, we manufacture bags according to your cage dimensions and collector specifications. Please provide the cage diameter, length, and any special requirements.
Q3: What is the typical filtration efficiency for particles larger than 1 micron?
A: For standard applications, the efficiency is ≥99.5% for particles ≥1 μm. For finer particles, surface treatments or additional membranes can be applied.
Q4: Is the bag resistant to moisture and hydrolysis?
A: Polyester is susceptible to hydrolysis at high temperatures and humidity. For wet or high-humidity environments, we recommend using a hydrolysis-resistant grade or a different material (e.g., acrylic or PPS).
Q5: What surface finishes are available for this bag?
A: We offer singed, calendered, heat-set, and PTFE coating options. These finishes reduce dust cake adhesion and improve cleaning efficiency.
Q6: How do you ensure the bag’s dimensional stability during pulse cleaning?
A: The needle felt is heat-set during production to minimize shrinkage. Additionally, the seams are reinforced with high-strength stitching or ultrasonic welding to prevent deformation.
Q7: What is the lead time for a typical order?
A: For standard sizes, lead time is 10–15 working days. Custom orders may require 20–25 working days depending on quantity and complexity. We can expedite for urgent orders.
Q8: Do you provide samples for testing?
A: Yes, we offer free samples (within 3 pieces) for customers to evaluate the quality and performance. You only need to cover the shipping cost.
* All specifications are subject to change without notice. Please consult our technical team for the most up-to-date information.
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