ZSK Mc18 Twin Screw Extruder
Designed to Further Simplify Handling
Six years after the initial launch of the ZSK Mc18 twin screw extruder, which is characterized by its specific torque of 18 Nm/cm³, Coperion GmbH, Stuttgart, Germany, presents a revised compact version that has undergone a range of improvements designed to further simplify handling. The new compact version of the twin screw extruder is equipped with quick-release clamps for the simple, quick replacement of the feed hopper as well as the user-friendly CSpro control system.
Coperion has completely overhauled its ZS-EG side devolatilization. It now offers clearly improved features for fast and neat assembly and disassembly. The new design of the ZSK's connection barrel has been optimized for quick changing and allows all four mounting bolts to be simultaneously undone in a circular movement. What's more, the screw shafts can be completely loosened, cleaned, or changed in only a few moves. Cleaning and maintenance times are sharply reduced as a result. The new ZS-EG is fitted with radial shaft sealing rings. As a result, the lantern area remains visible. They additionally permit nitrogen purging in an explosive environment. Thanks to the new seals, there is no longer a vacuum in the gear lanterns, and the service life of the gear-side shaft seal is considerably greater.
Clear Increase in Throughput
Coperion brought its patented feed enhancement technology (FET) for ZSK twin screw extruders to market some time ago, for a significantly enhanced feed performance when processing powdered bulk material. The technology involves equipping the feeding zone with a porous, gas permeable wall section, to which a vacuum is applied externally. Intermediate particle air is then sucked out of the powdered bulk material through this wall section. This compacting of the bulk material reliably improves the material intake capacity in the feeding section by a factor of two to three. The flow rate increases substantially while the compound quality remains high. Since its market launch, Coperion has successfully used the FET technology for the feeding zone of the ZSK twin screw extruder as well as for the ZS-B twin screw side feeder. It has been integrated into new machines and has also been retrofitted into existing compounding plants in close consultation with Coperion's process engineers.
CSpro for Industry 4.0 Tasks
The ZSK 58 Mc18 extruder that will be showcased at the K trade show is designed for all demanding compounding tasks. It is equipped with the user-friendly CSpro medium control system, which Coperion has been using in its ZSK high performance extruders since 2010. The control system comes with high-grade, standardized and pre-tested software, is fitted with the latest Siemens SPS-Generation S7-1500, and is connected via ProfiNet to the CPU (central processing unit) with compact ET200SP peripheral modules. Integration and data exchange in superordinated networks (ERP) takes place via the standardized OPC-DA and OPC-UA protocols. The control system is rounded off with additional complex software functions such as recipe management, order and material management, analysis of downtimes and the evaluation of historical values.
The CSpro medium enables the condition of the plant to be easily visualized via a web browser in the network with support for display of this information on smartphones and tablets. CSpro medium is ideally suited to the requirements of Industry 4.0.
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