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China Suppliers and Factory of High-Performance Candle Filter Cartridge for Spunbond Nonwoven Production
Description
In the production of spunbonded nonwoven fabrics, to ensure the smooth progress of the spinning process and reduce the occurrence of phenomena such as filament breakage and material dripping, two sets of filtration devices are generally installed. The first filter (coarse filter) is installed between the screw extruder and the metering pump. Its main function is to filter out larger impurities to extend the service life of the second filter device, protect the metering pump and spinning pump, increase the back pressure of the extruder, and thereby facilitate the exhaust and plasticizing of the material during compression. The second filter (fine filter) is installed in the spinning assembly. Its main function is to filter out finer impurities, crystal points, etc., prevent the spinneret from clogging, ensure the smooth progress of spinning, and improve the quality of the fibers.
Main Features
- 💧 High filtration flow rate by good pleated technology
- 🔬 Particle filtration performance well by multiple filter layers
- 🛡️ Corrosion resistance; High Temperature And Pressure Resistance
- 🔊 Filter element is washable by ultrasound
Specification
The melt filter element is a kind of rod-shaped structure which sintered from five layers of metal wire mesh. At the center of the rod is a reinforcing skeleton, which withstands the pressure during filtration. The initial pressure used for the filter element is 2.156×10⁶ Pa, and the pressure during switching is 8.33×10⁶ Pa. The filter elements come in several models such as X6, X7, X11, and X12, and the mesh diameters range from 20μm to 40μm.
The pore size of the mesh is the filtration accuracy of the filter element.
The pore size of the mesh is the filtration accuracy of the filter element.
| Filter Raw Material | SUS304 / 316L |
| Filter Media | Metal sintering mesh / Stainless steel wire mesh |
| Filtration Rating | 1–200 Micron |
| Filter Length | 16–60 inch (406.4–1524 mm) |
| Working Temp. | ≤ 350℃ |
| Allowed Pressure Difference | 10 bar / 14 psi |
| Connector Type | 222 / 226 / 215 / M36 / M28 / M24 / M22 / M20 |
📌 Note: We can provide high quality polymer pleated candle filters to meet your specific requirements of polymer melt filtration applications.
We list regular candle filter sizes below — these are popular sizes in melt filtration machines, for reference only.
| Diameter (mm) | Length (mm) | Suitable For Filtration Machine |
|---|---|---|
| Φ35 | 425 mm | PF2T-0.5B / PF2T-1.05B / PF2T-1.95B / PF2T-2.34B |
| Φ35 | 485 mm | PF2T-1.26B / PF2T-2.34B / PF2T-2.7B / PF2T-3.5B |
| Φ35 | 525 mm | PF2T-4.0B |
| Φ35 | 575 mm | PF2T-4.5B / PF2T-5.5B |
| Φ50 | 500 mm | PF2T-4.5B / PF2T-5.5B |
Frequently Asked Questions
❓ What is the difference between the coarse filter and fine filter in spunbonded nonwoven production?
The coarse filter (first filter) is positioned between the screw extruder and the metering pump to remove larger impurities, protect downstream components, and increase back pressure. The fine filter (second filter) is located in the spinning assembly and removes finer impurities and crystal points to prevent spinneret clogging and improve fiber quality.
❓ What materials are used to manufacture the candle filter elements?
The candle filter elements are made from SUS304 or 316L stainless steel. The filter media consists of multi-layer sintered metal wire mesh, providing excellent corrosion resistance and high-temperature durability.
❓ What is the maximum operating temperature and pressure for these melt filter elements?
The filter elements can operate at temperatures up to 350℃ and withstand an allowed pressure difference of up to 10 bar (14 psi), making them suitable for demanding polymer melt filtration environments.
❓ What filtration accuracy range do the candle filter elements offer?
The candle filter elements offer a filtration rating ranging from 1 to 200 microns. The mesh pore size determines the filtration accuracy, with standard models (X6, X7, X11, X12) featuring mesh diameters from 20μm to 40μm.
❓ Can the candle filter elements be cleaned and reused?
Yes. The filter elements are washable using ultrasonic cleaning methods, which allows for effective regeneration and extends the service life of the filter elements, reducing overall maintenance costs.
❓ Can you provide custom candle filter sizes for specific melt filtration machines?
Yes. In addition to the standard sizes listed (Φ35 and Φ50 diameter options in various lengths from 425mm to 575mm), custom polymer pleated candle filters can be manufactured to meet your specific requirements for different polymer melt filtration applications.