Compounding solutions built for every stage of your growth.
Advanced engineering. Visible in every detail.
Whether you are expanding capacity, improving product quality, reducing downtime, or preparing for your next technological leap – our compounding solutions are designed to support long-term growth.
Across the world, processors trust our technology because it combines:
↗ Exceptional process reliability
↗ Advanced engineering innovations
↗ Scalable machine platforms
↗ Global expertise with local support
CTE, STS, ZSK
Trusted Twin Screw Extruders Worldwide
Built to match every stage of your compounding journey.
Coperion is your trusted partner for every compounding task. CTE, STS and ZSK - all Coperion twin screw extruders deliver high reliability and outstanding performance. Benefit from global technology standards and trusted expertise.
Discover moreCoperion Twin Screw Extruder Models
CTE Extruders
Entry-level of stable compounding
STS Extruders
Expanded process capability and fast return on investment
ZSK Extruders
Max performance at highest specific torque
Technological Highlights
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1.) Highest specific torque
All Coperion twin screw extruder series offer a very high specific torque. The CTE PLUS has a specific torque of 7.2 Nm/cm³, and the specific torque of the STS Mc PLUS reaches 13.6 Nm/cm³. With its 18 Nm/cm³ torque, the ZSK Mc¹⁸ is the most powerful Coperion twin screw extruder, achieving highest throughputs.
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2.) Gear lantern with easy access
The gearbox lantern can be optionally equipped with an electronically secured maintenance opening. As soon as the screw shafts come to a complete stop, service personnel can open the gearbox lantern without tools, guaranteeing secure, easier access to the screw shaft coupling during maintenance.
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3.) Optimum Do/Di for compounding products with high torque requirement
Coperion twin screw extruders have a consistent diameter ratio Do/Di across all machine sizes of a series, ensuring comparable process conditions at every scale.
Coperion twin screw extruders provide optimum free volume and low shearing stresses – with absolute mechanical safety and reliability. You benefit from the highest throughputs, maximum product quality, and a reliable scale-up.
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4.) Innovative materials and screw designs
Revolutionary material solutions for extraordinarily long operating times, as well as a selection of new screw configurations, provide the highest through puts and maximum product quality.
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5.) Feed Enhancement Technology (FET)
With the patented FET equipment, it is possible to optimize the product feed such that you benefit from the full available drive power of Coperion twin screw extruders. When processing powder bulk materials with the ZSK Mc¹⁸ using FET technology you achieve 200 to 300% throughput increases at maximum productivity, the greatest operational safety, and the highest energy efficiency
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6.) Controls with user-friendly interface
Coperion offers control solutions that are individually modified for your requirements and that can be seamlessly integrated into your Industry 4.0 environments. The modern user interface meets the most current operating standard and, along with numerous comfortable functions and smart Industry 4.0 features, enables intuitive operation.
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7.) ZS-B easy twin screw side feeder
For side feeding of fillers and additives in powder or pellet form or cut glass fibers Coperion offers side feeding solutions for its twin screw extruder series.
The ZS-B easy for ZSK extruders can be removed quickly from the process section, significantly reducing the time needed for screw changes, cleaning, or maintenance.
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8.) Pluggable cartridge heaters
Pluggable cartridge heaters enable efficient individual tempering within the interior of each barrel. They are individually connected using IP67 plugs and can be removed for maintenance in no time, no electrician needed.
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9.) Heat insulation covers
The single-part heat insulation covers are very easy to handle – they can be
detached without removing the cartridge heaters. They insulate the process section completely. You profit from maximum energy efficiency -
10.) ZS-EG side devolatilization
Using a ZS-EG for ZSK extruders achieves throughput increases of up to 30% with improved product quality. The machine’s availability and profitability are markedly increased. For cleaning and maintenance purposes the ZS-EG in easy design can be removed from the process section in shortest time.
What's new
Compounding & Extrusion Webinar Calendar 2026
Gain fundamental knowledge in compounding and extrusion and learn all about the latest developments in process technology from the convenience of your workplace or home. Our experienced experts will explain everything that you need to know.
Ask the Expert: How Can Upstream Systems Engineering Improve Consistency in Modern PVC Production?
As formulation requirements evolve and production environments become more complex, upstream processes, such as material handling, feeding, compounding, and process control, play an increasingly important role in achieving consistent outcomes.
Coperion Introduces Next Level of PET Recycling Systems
Our standardized PET recycling system enables profitable, food-grade PET recycling even at low throughputs – without compromising on quality or compliance. Starting at 500 kg/h, recyclers benefit from maximum flexibility, proven twin screw technology, and an outstanding price-performance ratio.
Coperion Products & Services
- ZSK Mc¹⁸ Twin Screw Extruder
- ZSK Mv¹⁴ Twin Screw Extruder
- ZSK MEGAlab Laboratory Extruders
- ZSK MEGAcompounder
- ZSK NT Extruders
- ZSK FilCo Filtration Compounder
- STS Twin Screw Extruders
- Baker Perkins Twin Screw Extruders
- CTE PLUS Extruders
- Kombiplast KP Two-Stage Compounder
- ZSK Food Extruders
- MEGAtex Food Cooling Die
- ZSK Pharma Extruders
- Pelletizers
- Extruder Controls
- Auxiliary Equipment
- Coperion Feeding Solutions
- Coperion Feeder Finder
- ProRate™ Feeding Systems
- Rotary Valves
- Rotary Valves Finder
- Diverter Valves
- Discharge Valves & Samplers
- Mixer
- EcoFresh Silo Degassing
- Bulk Solids Heat Exchanger Bulk-X-Change
- Elutriators
- Filters & Separators
- Blower Packages
- Bulk Bag Dischargers, Hoppers & Bins
- Vacuum Sequencing Receivers
- Vacuum Loaders
- Dense Phase Conveying Equipment
- Controls
- Additional System Accessories
- Thermal Processing
- Pulverizing
- Milling and Grinding
- Moisture Analyzer DewTector