Gneuss SFXmagnus Series - High-Performance Polymer Melt Filtration Systems
One of the most critical processes determining product quality in plastic extrusion and recycling lines is polymer melt filtration. Solid particles, gels, and foreign contaminants present in the melt during the production process can directly affect the quality of the final product. For this reason, modern polymer processing lines require high-performance melt filtration systems.
Developed by the German technology company Gneuss, the SFXmagnus Series is a fully automatic rotary melt filtration system designed to operate with constant process and constant pressure conditions. This series has been developed specifically to provide stable production, high filtration accuracy, and uninterrupted process control in high-capacity extrusion lines.
Thanks to its compact design, large active filtration surface, stable pressure control, and rapid filter change capability, the SFXmagnus series increases production efficiency while simultaneously reducing energy consumption and operating costs in plastic processing plants.
Operating Principle of the SFXmagnus Filtration Technology
The SFXmagnus series operates as a continuous filtration system based on rotary disk filter technology. In this system, filter disks move continuously, allowing solid particles and contaminants in the polymer melt to be captured effectively. During filter changes, no pressure fluctuations or interruptions occur in the production line.
This technology allows the system to operate according to the following key principles:
• Continuous melt flow
• Constant process pressure
• Automatic filter change
• Uninterrupted production
During filtration, the melt passes through the filter surface via optimized rheological flow channels. This ensures that particles and contaminants within the melt are efficiently removed. As the filter disks rotate, the system continuously provides a clean filtration surface.
With this technology, filter replacement can be performed without stopping production, ensuring that product quality remains stable throughout the entire process.
Key Technical Features of the SFXmagnus Series
The SFXmagnus series has been designed specifically for high-performance extrusion applications. With its large filtration area and high temperature resistance, the system can process a wide range of polymer types.
Maximum operating temperature
Up to 400 °C
Filtration fineness
Filtration levels from 10 microns up to 1200 mesh
Differential pressure design value
Up to 40 bar
Reference melt viscosity
Technical design based on a reference melt viscosity of 10,000 Pa·s
Active filtration area
Depending on the model, up to approximately 1.7 m² - 1.8 m² of active filtration surface
Melt residence time
Thanks to optimized flow channel geometry, the melt residence time within the system is less than one minute.
This minimizes the risk of thermal degradation of the polymer melt.
Optional Features
• High-pressure versions
• ATEX compliant design
• Different heating system configurations
• Various filter element geometries
Thanks to this flexible configuration, the SFXmagnus system can be easily integrated into a wide range of production lines.
Large Active Filtration Area
One of the most important advantages of the SFXmagnus series is its exceptionally large active filtration surface.
A larger filtration area provides several benefits:
• Longer filter service life
• Lower pressure loss
• More stable production conditions
• Reduced maintenance requirements
A larger filtration surface also enables higher throughput capacities.
Constant Pressure Technology in the Production Process
One of the most critical parameters in plastic extrusion lines is melt pressure. Pressure fluctuations can cause serious quality problems in the final product.
The constant pressure filtration technology used in the SFXmagnus system ensures that the process pressure remains nearly constant during filtration.
As a result, the following process parameters remain stable:
• Melt temperature
• Melt viscosity
• Production capacity
• Product quality
This ensures homogeneous product quality throughout the entire production process.
High Production Capacity
SFXmagnus filtration systems are designed for use in high-throughput extrusion lines.
Typical applications include:
• extrusion capacities up to approximately 1,000 kg/hour
• filtration fineness down to around 30 microns
• stable pressure conditions even in high-capacity production lines
These features provide major advantages for film production, fiber manufacturing, and recycling processes.
Application Areas
SFXmagnus filtration systems are used in a wide range of polymer processing applications.
Film production
• Cast film
• Blown film
• Multilayer film
Fiber production
• Technical yarn
• Industrial fibers
• Textile filament production
Sheet production
• PET sheet
• PP sheet
• PS sheet
Recycling applications
• PET recycling
• PE recycling
• PP recycling
Pipe and profile production
• PVC pipes
• TPU pipes
• Elastomer profiles
These systems can process both virgin polymers and recycled materials.
Impact on Product Quality
Using a high-performance melt filtration system significantly improves final product quality.
Key quality benefits provided by the SFXmagnus series include:
• Reduction of gel formation
• Removal of particulate contamination
• Reduced filament breakage
• Extended spinpack lifetime
• Homogeneous melt flow
These advantages are particularly important in high-precision technical plastic production.
Energy Efficiency and Economic Advantages
The SFXmagnus filtration system provides not only quality improvements but also significant economic benefits.
Lower production costs
Constant process pressure reduces energy consumption in extrusion lines.
Fast return on investment
In many industrial applications, the return on investment can be achieved in less than one year.
Raw material savings
More stable production conditions allow optimization of product thickness, particularly in film production, leading to substantial raw material savings.
Advantages of the SFXmagnus Series
SFXmagnus filtration systems offer the following key advantages:
• Constant process and pressure control
• Extremely large active filtration area
• Continuous production without interruptions
• Automatic filter change
• Compact system design
• Low maintenance requirements
• High production capacity
• Stable and consistent product quality
Thanks to these features, the system represents a high-performance filtration solution for modern polymer processing plants.
