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ECO-Twin

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ECO-Twin Extruder The Conical Co-Rotating Twin-Screw 2.0

Tradition Meets Innovation

The revolutionary ECO-Twin Extruder by 4NG—a cutting-edge conical co-rotating twin-screw extruder that seamlessly integrates proven technology with advanced process engineering. Developed by a team of seasoned experts with decades of industry experience, the ECO-Twin stands as a beacon of efficiency and innovation in plastic processing, setting a new standard for performance and reliability. Elevate your production capabilities with the ECO-Twin and experience unparalleled results.

Outstanding & Energy-Efficient: Performance in Regrind Processing

The ECO-Twin Extruder excels particularly in processing regrind materials, such as PET bottle flakes. Thanks to its conical design, the material is plasticized with minimal energy input—the process runs nearly adiabatically, making it exceptionally energy-efficient and gentle on materials.

Intelligent Screw Geometry Based on Natural Physical Principles

The specially developed screw geometry follows a natural physical principle:

Large surface areas and high circumferential speed in the feed zone ensure effective energy transfer to the material.

Small surface areas and low circumferential speed in the discharge zone minimize friction and heat loss.

The result:

Exceptionally gentle processing method for low bulk density plastic regrind, perfectly tailored for the most demanding recycling applications. This innovative approach ensures superior quality and performance, setting a new standard in the industry.

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Compact & powerful
The ECO-Twin Drive Concept

The ECO-Twin Extruder features a particularly compact and high-performance drive system. This specially developed Bevelled-Gearbox, with conically shaped output gears, enables the transmission of extremely high torque levels — ideal for constant, reliable high output at low rotational speeds.

Optionally, the gearbox can be equipped with an intelligent monitoring system. This continuously tracks oil condition, lubrication, cooling, speed, and vibrations. Maintenance cycles can be planned precisely and carried out with minimal effort.

The ECO-Twin 220 is powered by two synchronous motors, which not only reduce the overall length of the unit but also allow for precise detection of torque fluctuations.

The ECO-Twin Extruder stands out not only for its impressive performance but also for its innovative design, which prioritizes operator convenience and reliability

The screws feature additional bearing support in the flange area, enhancing stability and extending their service life.

For maintenance tasks, the barrel can be swivelled open on both sides, which allows for the screws to be removed from the back, saving both space and time.

Convincing & Impressive: The Performance Data of the ECO-Twin 220

With a total length of just 7.5 m, the ECO-Twin 220 is exceptionally compact — ideal for installations with limited space, such as in the production of semi-finished products like films. The ECO-Twin 220 offers impressive technical specifications:

Throughput capacity: up to approx. 4 t/h (depending on the polymer being processed)

Installed drive power: 570 kW (2 direct drives at 285 kW each)

Optional upgrade: to 650 kW drive power, enabling throughputs of up to approx. 6 t/h

This combination of compact design, easy maintenance, and high performance makes the ECO-Twin the ideal solution for modern recycling and production systems.

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Why ECO-Twin?

Advancing Proven Technology: The ECO-Twin is the “Conical Co-Rotating Twin Screw 2.0” — a new generation featuring optimized screw geometry and drive technology.

Outstanding Performance in Regrind Processing, Especially PET: Ideally suited for PET bottle flakes, with low energy input and nearly adiabatic operation.

Physically Optimized Process: Large surface area in the intake zone, minimal friction in the discharge zone — for gentle and efficient plasticizing.

Extremely Low Energy Consumption

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Your Advantage with ECO-Twin – Build Your Own ECO-Twin!

Complete ECO-Twin engineering package tailored to your specific application.

Use of state-of-the-art engineering tools such as Creo

Integration of your own resources and production capacities — maximizing value creation within your company

“White Label” options available for OEMs

Future-oriented technologies for sustainable competitiveness