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China Suppliers Factory for High-Quality Candle Filter Cartridge in 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.
| Filter Raw Material | SUS304/316L |
| Filter Media | Metal sintering mesh / Stainless steel wire mesh |
| Filtration Rating | 1–200 Micro |
| Filter Length | 16–60 inch (406.4–1524mm) |
| 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 | 425MM | PF2T-0.5B / PF2T-1.05B / PF2T-1.95B / PF2T-2.34B |
| Φ35 | 485MM | PF2T-1.26B / PF2T-2.34B / PF2T-2.7B / PF2T-3.5B |
| Φ35 | 525MM | PF2T-4.0B |
| Φ35 | 575MM | PF2T-4.5B / PF2T-5.5B |
| Φ50 | 500MM | PF2T-4.5B / PF2T-5.5B |
Frequently Asked Questions
Q
What is the role of the coarse filter in a spunbonded nonwoven fabric production line?
The coarse filter (first filter) is installed between the screw extruder and the metering pump. It filters out larger impurities, protects the metering pump and spinning pump, extends the service life of the fine filter, and increases the back pressure of the extruder to facilitate proper exhaust and plasticizing of the material.
Q
What materials are used to manufacture the candle filter elements?
The candle filter elements are made from SUS304 or SUS316L stainless steel. The filter media consists of metal sintering mesh and stainless steel wire mesh, offering excellent corrosion resistance and durability under high temperature and pressure conditions.
Q
What is the maximum working temperature and pressure for these candle filters?
These candle filters can withstand a working temperature of up to 350℃ and an allowed pressure difference of 10 bar (14 psi), making them suitable for demanding polymer melt filtration applications.
Q
Can the candle filter elements be cleaned and reused?
Yes. The filter elements are washable using ultrasonic cleaning methods, which helps restore their filtration performance and extends their operational lifespan, reducing overall replacement costs.
Q
What filtration accuracy and size options are available?
The candle filters offer a filtration rating ranging from 1 to 200 microns. Filter lengths range from 16 to 60 inches (406.4–1524mm), and models include X6, X7, X11, and X12, with mesh diameters from 20μm to 40μm to suit various application requirements.
Q
Can you supply custom candle filters for specific melt filtration machines?
Yes. We provide high quality polymer pleated candle filters tailored to meet specific requirements of polymer melt filtration applications. Standard sizes are available for popular filtration machines such as PF2T series, and custom specifications can be arranged upon request.