EN
GUANLIN flame retardant polyester filter bags, 130°C temperature resistance, for woodworking, coal and metal powder spark-prone dust collection.
Flame retardant polyester needle felt filter bags that resist spark carry-over and glowing embers in woodworking, coal handling, metal grinding and shot blast baghouses, while keeping 130°C service and ≥99.9% filtration efficiency.
Description
In woodworking, coal handling, grinding and shot blast extraction, dust arrives at the baghouse together with sparks and glowing particles. A standard polyester bag can develop a pinhole burn that grows into a full failure within days. GUANLIN flame retardant filter bags use polyester needle felt engineered to resist ignition and self-extinguish after spark contact, buying the extra margin needed in spark-prone systems.
Why Choose GUANLIN Flame Retardant Filter Bags
- Spark and ember resistance — the media resists ignition from carry-over sparks and self-extinguishes once the source is removed.
- Stable 130°C service — polyester base media for continuous 130°C duty with a 150°C short-term peak.
- ≥99.9% filtration efficiency — dense needle-punched structure captures fine particulate down to 1 μm.
- Good dust release — singed surface keeps the cake releasable and pressure drop low.
- High mechanical strength — 500 g/m² basis weight with reinforced seams handles frequent pulse cleaning.
- Anti-static option — available with conductive grid for combustible dust applications.
- Custom sizing — Ø115–200 mm × 1000–6000 mm to your drawing.
- Matched cages — bags and support cages supplied as a set.
Application Scenarios
Woodworking and furniture manufacturing
Sanding and CNC dust from resin-rich wood can ignite from a single spark, and a pre-separator does not always catch everything. Flame retardant media adds a barrier that a standard bag does not have, giving the maintenance team time to find the source instead of replacing burned bags.
Coal handling and transfer points
Coal dust is both combustible and prone to self-heating. Combined with the anti-static option and proper grounding, flame retardant media reduces ignition risk in bunkers, crushers and belt transfer vents.
Metal grinding and polishing
Dry grinding and linishing lines throw sparks directly into the extraction duct. The media resists burn-through while the felt still captures the fine metal particulate.
Shot blast and surface preparation
High-velocity abrasive and steel shot particles carry heat into the collector. Flame retardant bags tolerate incidental sparks better than standard polyester.
Plastic and rubber grinding
Thermoplastic dust melts and can ignite on contact with hot particles; flame retardant media limits propagation while keeping filtration performance.
Welding fume and mixed metal workshop extraction
Mixed spark and fume streams benefit from the combination of flame retardant felt and an anti-static option for comprehensive protection.
Applicable Working Conditions
- Continuous gas temperature ≤130°C (266°F), short-term peak ≤150°C (302°F)
- Spark, ember or glowing particle carry-over in the duct
- Pulse jet, shaking or reverse-air cleaning
- Moderate humidity, non-corrosive dust
Product Specifications
| Item | Specification |
| Filter Media | Flame retardant polyester needle felt |
| Basis Weight | 500 g/m² |
| Continuous Operating Temperature | 130°C (266°F) |
| Max Short-Term Temperature | 150°C (302°F) |
| Filtration Rating | 0.5–100 μm |
| Dust Removal Efficiency | ≥99.9% (particles ≥1 μm) |
| Flame Resistance | Self-extinguishing after ignition source removal |
| Diameter | Ø115–200 mm |
| Length | 1000–6000 mm |
| Top Construction | Snap band / flange / buckle / sewn |
| MOQ | 10 pcs |
| Lead Time | 7–15 days |
Spark Protection Guidance
Flame retardant media is a last line of defence, not a substitute for spark control. Best practice is to keep a cyclone or dropout box upstream, fit spark detection with water quench where dust is highly ignitable, maintain duct velocity above the settling threshold, and inspect bags after any known spark event.
Packaging & Logistics
- Inner: individual polybag with moisture barrier
- Outer: 5-ply export carton or woven bag
- EXW / FOB Shenzhen or Guangzhou / CIF
FAQ
Q1. Does flame retardant mean fireproof?
No. It resists ignition from sparks and self-extinguishes when the source is removed; it is not a fireproof barrier.
Q2. Can it be combined with anti-static?
Yes, a conductive grid version is available for combustible dust applications.
Q3. What is the maximum temperature?
130°C (266°F) continuous, 150°C short-term peak.
Q4. Do I still need a spark arrestor?
Yes, upstream spark control is still recommended — the bag is the last line of defence.
Q5. Does flame retardant treatment reduce efficiency?
No, filtration efficiency remains ≥99.9% for particles ≥1 μm.
Q6. What is the MOQ and lead time?
MOQ 10 pcs, 7–15 days for standard sizes.
Key Specifications
- Media: flame retardant polyester needle felt, 500 g/m²
- Temperature: 130°C continuous / 150°C peak
- Flame resistance: self-extinguishing
- Efficiency: ≥99.9% at ≥1 μm
- Sizes: Ø115–200 mm × 1000–6000 mm
- MOQ: 10 pcs, 7–15 days
