By Ron Shinn
Coperion GmbH introduced two new models to existing twin screw extruder lines at K 2025, one primarily for compounding and the other for recycling, and showed new features to its C-Beyond digital platform.
The ZSK 58 Mc18 twin-screw extruder has a 58mm screw diameter. Throughput is up to approximately 5,511 pounds per hour with low energy consumption and a high degree of automation.
Coperion said the machine’s high torque makes it a good choice for processing engineered plastics. It has an outer diameter-to-inner diameter ratio of 1.55. Maximum torque per shaft is 2,000 Newton meters (Nm).
Torque is directly transferred via the gearbox and screw shafts onto the rotating twin screws. Coperion said the cost per pound of compound is low, due to the high output and the machine’s standard automation features. That gives a quick return on investment.
The ZSK 58 Mc 18 uses gentle processing with a higher filling degree to improve compound quality.
The STS 35 Mc 11 twin screw has been optimized for masterbatch processing and has a maximum throughput of approximately 661 pounds per hour. Coperion said the closely intermeshing twin screws allow for even material distribution of ingredients and provide self-cleaning in the process section.
With its higher torque, the new machine delivers up to 27 percent higher throughput rates than the previous model. Greater screw fill results in a decrease of melt temperature. The maximum torque per shaft is 305 Nm. Its maximum RPM is 900.
To improve cleaning and facilitate quick changeovers for masterbatch applications, the STS twin-screw extruder also features optimized hoppers with inserts and a redesigned die head.
The STS 35 Mc 11 uses brass heater shells and water flash cooling with flexible connection to water manifold for optimal processing conditions in every heating zone.
The process section is made from nitride-hardened steel.
The company lists recycling of regrind plastics as a target use for this extruder. Coperion builds the STS Mc 11 line in China.
Coperion also showed its Lifecycle Manager feature for predictive maintenance planning for the first time. The Lifecycle Manager is part of the C-Beyond digital platform, which captures and displays the extruders’ operational data.
The Lifecycle Manager uses an extruder’s operating hours and performance to compute upcoming maintenance and repairs for all the machine’s components. When a service is coming due or a repair is needed, C-Beyond sends a notification to the operator.
Coperion said the Lifecycle Manager improves a machine’s OEE because service and maintenance can be bundled and scheduled to minimize downtime.
Service and maintenance work is logged in the Lifecycle Manager to create a maintenance record over the machine’s life.
Coperion also demonstrated a new extruder condition-monitoring system on the ZSK 58 Mc18. It uses sensors in the motor, gearbox and process section to monitor vibrations and detect anomalies.
Coperion offers a service agreement to remotely monitor, capture and evaluate sensor data and recommend actions.
Contact:
Coperion Corp., Wytheville, Va., 276-228-7717, https://coperion.com/en
