GNEUSS MRS Extruder Technology
The GNEUSS MRS Extruder (Multi Rotation System) is an advanced extrusion system developed to provide highly efficient degassing and melt processing performance in the plastics processing and recycling industry. The MRS technology combines the principle of a conventional single-screw extruder with a multi-screw degassing section, allowing the polymer melt to be processed over a significantly larger surface area. As a result, volatile substances, moisture, and contaminants can be removed much more effectively, enabling the production of high-quality polymer materials.
MRS extruders are widely used in plastic recycling applications such as PET bottle recycling, plastic film recycling, fiber recycling, and degassing processes for engineering plastics. With this technology, post-consumer plastic waste can be converted into high-quality pelletized raw materials.
MRS technology provides both high processing performance and energy efficiency in polymer processing. Compared to conventional extrusion technologies, energy consumption is typically 15-25% lower.
Design Principle of the MRS Extruder
The MRS extruder is based on the design of a single-screw extruder but operates with a multi-screw degassing section integrated into the extruder barrel. In this section, several satellite screws operate together with the main screw.
While the satellite screws rotate around the main screw axis, they also rotate in the opposite direction, significantly increasing the surface area of the polymer melt. This allows the melt to be continuously exposed to a renewed surface under vacuum conditions, making the removal of volatile components extremely effective.
With this system:
the melt surface area can be increased up to 100 times compared to a conventional single-screw extruder
the surface renewal rate can be up to 25 times higher than twin-screw extruders
volatile components can be removed much faster
Thanks to this design, MRS extruders provide major advantages in plastic recycling processes that require intensive degassing.
Technical Specifications of the MRS Extruder
GNEUSS MRS extruder systems are available in various models with different production capacities. Capacity and power values vary depending on screw diameter and extruder size.
Typical technical specifications of MRS extruders include:
Screw diameter: 35 mm - 200 mm
Screw length ratio (L/D): 38 - 42
Maximum screw speed: 75 - 220 rpm
Motor power: 25 - 540 kW
Approximate machine dimensions depending on model:
Extrusion height: 700 - 1600 mm
Machine length: 2250 - 10,500 mm
Machine width: 480 - 2935 mm
Machine weight: 700 - 16,750 kg
MRS Extruder Capacity Values
MRS extruder systems can operate within wide capacity ranges 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 demonstrate that MRS extruders can be used in both medium-scale production lines and high-capacity industrial recycling facilities.
Degassing Performance
One of the most significant advantages of MRS extruders is their superior degassing performance. Thanks to the satellite screws, the polymer melt continuously forms a renewed large surface area and is processed under vacuum conditions.
The degassing system enables:
removal of volatile organic compounds
elimination of moisture
removal of solvent and oil residues
reduction of odor formation
Degassing is typically carried out under vacuum levels of 25-30 mbar, ensuring efficient removal of gases and contaminants from the polymer melt.
Energy Efficiency
MRS extruder technology stands out with its high energy efficiency. In many cases, pre-drying and crystallization processes used in conventional extrusion systems are no longer required.
This results in:
shorter process times
lower operating costs
reduced energy consumption
With MRS technology, overall energy consumption is typically 15-25% lower compared to conventional extrusion systems.
Application Areas of MRS Extruders
MRS extruder technology is widely used in the plastics processing and recycling industries.
Typical applications include:
PET bottle recycling
thermoform PET sheet production
polyester fiber production
plastic film recycling
BOPET recycling
polyolefin recycling (PE / PP)
polyamide degassing processes
plastic compounding and mixing applications
MRS technology is also used in recycling processes that meet food-contact quality requirements.
Advantages of the MRS Extruder System
The GNEUSS MRS extruder technology offers several key advantages in polymer processing:
high degassing performance
large melt surface area
low energy consumption
low thermal stress during polymer processing
high production capacity
compact machine design
low maintenance requirements
Thanks to these features, MRS extruders are considered one of the most advanced extrusion technologies used in plastic recycling today.
High-Quality Plastic Recycling with MRS Extruders
MRS extruder technology enables the production of high-quality recycled raw materials in the plastic recycling industry. The advanced degassing system effectively removes volatile substances, moisture, and contaminants from the polymer melt.
With this technology:
PET products with high transparency can be produced
low yellowness levels can be achieved
homogeneous pellet structures are obtained
polymers with high mechanical performance can be produced
Today, MRS extruder technology is considered one of the most advanced solutions for achieving high efficiency and sustainable production in plastic recycling facilities.
