Our filter cloth are designed based on actual site conditions, not generic catalog assumptions. We help you select the right media to balance filtration efficiency, pressure drop, and service life.
PPS+PTFE Filter Bags
Bag bottom
Bag head
PPS+PTFE Filter Bags are composite needle-punched felt filter materials, and their medium layer is made of PPS and PTFE, two fiber cloths with extremely high chemical stability. This composite material gives full play to their respective excellent properties to form a high-performance filter material.
- High temperature resistance: PPS material can operate stably for a long time below 200℃, and PTFE coating has excellent high temperature resistance and can withstand higher temperatures.
- Acid and alkali resistance: PPS material has good acid and alkali resistance and can cope with highly corrosive gases.
- High efficiency filtration: PPS+PTFE filter media can effectively intercept fine particles such as PM2.5, and the emission concentration is less than 10mg/m³.
Technical Specifications of PPS + PTFE Filter Bags
| ITEM | Details |
|---|---|
| Filter Material | 50% PPS + 50% PTFE Needle-punched surface layer with 20% fine fiber, pure PTFE base fabric |
| Working temperature (°C) | 170 |
| Peak temperature (°C) | 200 |
| Emission (mg) | / |
| Weight (g/m2) | 650+5% |
| Thickness (mm) | 2.0+10% |
| Air permenability (m3/m2/min) | 10+20% |
| Tensile strength / warp | ≥900 |
| Tensile strength / weft | ≥1200 |
| Tensile elongation / warp | ≤25 |
| Tensile elongation / weft | ≤50 |
| 24-hour heat shrink / warp | ≤1.5 |
| 24-hour heat shrink / weft | ≤1.0 |
Process Description
During the processing of PPS+PTFE needle-punched felt filter material, according to the characteristics of fibers of different fineness, the surface layers are superimposed with needle-punched composite technology to enable the fibers to be effectively combined, effectively avoiding the problem that PTFE fibers are difficult to combine, while overcoming the disadvantage of PPS fibers being easily oxidized, improving the performance of the filter bag, and breaking through the limitations of traditional processes.
- The surface layer of the filter material uses ultra-fine PPS long fibers to effectively filter fine dust in the flue gas.
- The middle base fabric is made of PTFE material to enhance the high temperature resistance and chemical corrosion performance of the filter material.
- The bottom layer is a combination of PPS coarse fibers and a microporous ultra-fine fiber surface layer, which not only improves the filtration efficiency, but also maintains good air permeability and easy cleaning, and maintains excellent filtration performance in harsh environments.
Processing Detail of Filter Bags
High quality seam designed for lowest emissions
Top and Bottom Configurations
Support Rings
Filter bag sewing technology
Pinhole Sealing Technology
Seamless Sewing Technology
TAP Lamination Technology
Quality Control
Raw material quality control
The raw materials of Aokai have undergone tests for 13 indicators in the laboratory, including fiber composition, air permeability, breaking strength and elongation at break, thermal shrinkage, moisture regain, oil content, and fiber melting point, with all test standards surpassing the relevant criteria.
Production process quality control
The factory has obtained ISO9001 and ISO14001 certifications. It operates in accordance with the 7S management standards, strictly controls product quality in line with international high-end product testing standards, retains inspection records for more than 3 years and electronic records permanently, ensuring the traceability of each batch of products.
