High-Quality China Suppliers Factory for Candle Filter Cartridge in Spunbond Nonwoven Applications Manufacturers, Companies

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High-Quality China Suppliers Factory for Candle Filter Cartridge in Spunbond Nonwoven Applications Manufacturers, Companies

The polymer melt filter is an essential component of filtration equipment used in high-speed spinning, fine denier spinning, and nonwoven fabric production. Manufactured by leading suppliers in China, this filter effectively removes impurities and unmelted particles from polymer melts, ensuring the protection of spinnerets and enhancing overall product quality. The filter system consists of a coarse filtration stage, positioned between the screw extruder and metering pump, and a fine filtration device housed within the spinning assembly. The heart of this system, the filter element, is crafted through the sintering of five layers of metal wire mesh, providing exceptional resistance to both high temperatures and high pressures. As a prominent factory in the industry, we guarantee reliable and high-performance filtration solutions for your polymer processing needs.

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Product Description

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 achieved through advanced pleated technology
🔵 Excellent particle filtration performance enabled by multiple filter layers
🔵 Corrosion resistance; High temperature and pressure resistance
🔵 Filter element is washable by ultrasound for easy maintenance and reuse

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 2.156×10⁶Pa, and the pressure during switching is 8.33×10⁶Pa. 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 Micron
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

❓ What is a candle filter used for in spunbonded nonwoven fabric production?

Candle filters are used to remove impurities from polymer melts during the spinning process. They help prevent filament breakage, material dripping, and spinneret clogging, ensuring smooth and high-quality fiber production.

❓ What is the difference between the first filter (coarse) and the second filter (fine)?

The first (coarse) filter is placed between the screw extruder and metering pump to remove larger impurities and protect downstream components. The second (fine) filter is located in the spinning assembly and removes finer impurities and crystal points to ensure high fiber quality.

❓ What materials are the candle filter elements made from?

The candle filter elements are made from SUS304 or 316L stainless steel, sintered from five layers of metal wire mesh. This construction provides excellent corrosion resistance and the ability to withstand high temperatures up to 350℃ and high pressures.

❓ What filtration accuracy do these candle filters offer?

These candle filters 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) offering mesh diameters between 20μm and 40μm.

❓ Can the candle filter elements be cleaned and reused?

Yes, the candle filter elements are designed to be washable using ultrasonic cleaning methods. This extends the service life of the filter elements and reduces overall operating costs.

❓ Can custom candle filter sizes be provided for specific filtration machines?

Yes, custom polymer pleated candle filters can be manufactured to meet specific requirements. Standard sizes are available in diameters of Φ35 and Φ50 with various lengths to suit popular melt filtration machines. Please contact us with your specifications for a tailored solution.

High-Quality China Suppliers Factory for Candle Filter Cartridge in Spunbond Nonwoven Applications Manufacturers, Companies

Product Description

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