GNEUSS MDS Extruder Technology
The GNEUSS MDS Extruder (Multi Dimensional System) is an advanced extrusion technology developed for high-performance degassing and melt purification processes in the plastics processing and recycling industry. MDS extruders are specifically designed to remove volatile substances generated during the processing of high-viscosity polymers and to ensure stable processing of the polymer melt.
This technology enhances the conventional single-screw extruder design by using a special structure in which the screw and barrel diameters vary along the processing section. As a result, the energy input into the melt and the degassing process are optimally balanced. This allows the polymer melt to be processed with low shear stress while achieving highly efficient gas removal (degassing).
MDS extruder technology is widely used particularly in plastic recycling applications. It enables high-quality recycling of various polymer types such as PET, PA, PLA, and polyolefin-based plastics. In addition, it offers highly efficient degassing performance for the recycling of polymers such as HDPE, LDPE, PP, and PS.
MDS Extruder Design Principle
The operating principle of the MDS extruder is based on a specially designed screw geometry that enables the effective removal of volatile substances from the polymer melt under vacuum conditions.
The main design features include:
variable screw diameter along the processing section
extended metering section
long and deep degassing zone
optimized energy input
The metering section, where the screw diameter is expanded, enables the polymer melt to be thermally activated within a short time. The following deep and extended degassing zone then performs highly efficient gas removal under vacuum conditions.
With this design, the polymer melt quickly reaches the required processing temperature and is subsequently purified from gases in a vacuum environment. This increases degassing efficiency while preventing damage to the polymer chains.
This design offers significant advantages when processing high-viscosity polymers. High shear forces can break polymer chains and negatively affect the mechanical properties of the material. The MDS extruder technology operates with low shear stress, thereby preserving the polymer structure.
Technical Specifications of the MDS Extruder
GNEUSS MDS extruder systems are available in various models with different production capacities. Technical parameters such as screw diameter and motor power vary depending on the model.
Typical technical specifications include:
Screw diameter: 35 mm - 200 mm
Maximum screw speed: 90 - 220 rpm
Motor power: 25 - 540 kW
Approximate machine dimensions depending on the model:
Extrusion height: 700 - 1450 mm
Machine length: 2250 - 10500 mm
Machine width: 480 - 2700 mm
Machine weight: 700 - 16,750 kg
These technical values demonstrate that MDS extruders can be used both in small-scale production lines and in high-capacity industrial recycling plants.
MDS Extruder Capacity Values
MDS extruder systems can operate across a wide capacity range depending on the polymer type being processed.
Typical production capacities include:
PET: 35 - 2000 kg/hour
PP + PE: 25 - 1600 kg/hour
PA: 28 - 1900 kg/hour
PS: 30 - 1500 kg/hour
These capacity ranges show that MDS extruders can deliver high production output in both plastic recycling facilities and polymer processing plants.
Degassing Performance
One of the most significant advantages of MDS extruder technology is its high degassing efficiency.
During the degassing process, the polymer melt is processed under vacuum conditions, allowing the effective removal of contaminants such as:
moisture
volatile organic compounds
solvent residues
additive residues
odor-forming substances
Degassing is typically performed under low-pressure vacuum conditions. This enables gases contained in the polymer melt to be removed rapidly, improving the overall product quality.
This technology is particularly important in plastic recycling processes because recycled plastics often contain significant amounts of volatile contaminants.
Energy Efficiency
MDS extruder technology is characterized by high energy efficiency. Thanks to the optimized screw geometry, the polymer melt reaches the required temperature within a short time while minimizing energy losses.
This results in several advantages:
shorter process times
reduced energy consumption
lower operating costs
more stable process control
In addition, MDS extruder systems can also be retrofitted into existing extrusion lines.
Application Areas of MDS Extruders
GNEUSS MDS extruder technology has a wide range of applications in the plastics processing and recycling industry.
Typical applications include:
PET recycling
plastic film recycling
polyolefin recycling (PE / PP)
degassing of engineering plastics
polyester fiber production
plastic compounding processes
purification of polymer blends
The technology is also frequently used for odor removal in plastic recycling applications.
Advantages of the MDS Extruder System
GNEUSS MDS extruder technology offers numerous advantages in plastic processing operations:
high degassing performance
low shear processing of polymers
wide material compatibility
high production capacity
low energy consumption
robust and durable machine design
flexible process control
These features make MDS extruder systems one of the most advanced extrusion technologies used in the plastic recycling industry.
High-Quality Plastic Recycling with MDS Extruders
MDS extruder technology enables the production of high-quality recycled raw materials in plastic recycling facilities. The advanced degassing system effectively removes volatile compounds, moisture, and contaminants from the polymer melt.
With this technology:
high-quality plastic pellets can be produced
the mechanical properties of plastic products are preserved
polymer yellowing is reduced
the application range of recycled materials is expanded
Today, MDS extruder technology represents one of the most advanced extrusion solutions for achieving high efficiency, energy savings, and sustainable production in the plastic recycling industry.
