NEWS

Stainless steel filter cartridges for melt filtration are typically made of 316L/304 stainless steel sintered fiber felt or multi-layer mesh, suitable for purifying high-temperature, high-viscosity polymers. They feature high porosity, excellent dirt-holding capacity, and high-pressure resistance, with standard filtration accuracy ranging from 0.5–200 μm.

These durable and easy-to-clean cartridges are essential for purifying polymer melts (PP, PET, PC, PA, PS) in screen changers and high-viscosity applications, operating at temperatures up to 100°C or higher.

Main Types and Structures:

Sintered Metal Fiber Felt: Offers high porosity and deep filtration, ideal for removing gels and contaminants from polymer melts.

Multi-layer Metal Mesh: Provides high strength and structural stability, often used as a support layer or for finer filtration.

Pleated/Folded Filter Cartridges: Significantly increases filtration area within a limited space, thereby increasing dust holding capacity and reducing initial pressure drop.

Disc Filter Cartridges: Specifically designed for filtering high-viscosity, high-concentration melts (e.g., PET or nylon production).

Common Characteristics: High Temperature and Pressure Resistance: Designed to withstand the harsh environments of plastic extrusion, with temperatures up to 600°C (e.g., starting from…) or pressures up to 9 MPa.

Corrosion Resistance: Suitable for chemical fiber production and corrosive plastics.

Renewability: Supports multiple cleaning methods, including reflow cleaning, ultrasonic cleaning, and baking cleaning, extending service life.

Material: Primarily constructed from 316L stainless steel, offering excellent corrosion resistance and durability.

Common Applications: Polymer Melt Filtration: Used in production lines for PET, PP, PC/ABS, LDPE, HDPE, and TPE. Chemical Fiber Industry: Used for purifying polymer melts during the production of staple fibers, spunbond nonwovens, and meltblown nonwovens.