NGR's Eco-Twin 200 processes regrind, PET flakes

By Ron Shinn 

Next Generation Recycling (NGR) has a new co-rotating extruder especially suited for processing PET bottle flakes and other regrind with low bulk density.  

The Eco-Twin 220 conical twin-screw extruder is designed to use less energy by gently melting pre-dried flakes. NGR said the new extruder also features highly effective degassing technology. 

The extruder was shown for the first time at K 2025. 

The drive uses two synchronous motors and has a compact, beveloid gearbox. Beveloid gears are most frequently used in transmissions with intersecting axes to allow inclination of the output shaft. They facilitate compact gearbox designs. 

NGR offers optional condition monitoring of the gearbox. The constant monitoring system measures oil condition, lubrication, cooling, speed and vibrations.  

The two synchronous motors allow precise control of dosing by detecting torque fluctuations. 

Two motor sizes are available. An Eco-Twin 220 with two 285-killowatt (kW) motors has a throughput of up to 4.4 tons per hour. With two 325kW motors, throughput is 5.5 tons per hour. 

The cylinder is connected to the gearbox by a coupling housing that softens mechanical vibrations. The cylinder can be swiveled open on both sides for screw removal. 

Liquid or granular additives are fed directly into the feed opening. 

The control system is based on a Siemens S7 PLC. The 21.5-inch HMI screen is on a wheeled base. The system has a full range of visual and audio alarms. 

A high-performance degassing system is also available as an option. 

Contact: 

Next Generation Recycling Machines Inc., Atlanta, 678-720-9861, https://ngr-world.com