MACHINERY | TWIN SCREW EXTRUDERS
power with maximum screw speed of 1,200 rpm, a FSB side feeder, a FSV vacuum side degassing unit, and a FSK extrusion head with the company’s patented sheet die plate.
Another item on display was the Feddem
Above: Entek’s VFT technology was originally developed for use when
compounding fluffy materials
a fully integrated solution for digital and future- proof control, monitoring and maintenance of extruders of any size”. Features include an overview of the entire extrusion line, quick access to all main units, storage of recipes for reproducibility, and OPC-UA interface and web-based control technol- ogy for digital integration. “Introducing LinXX, we are revolutionising the
way extrusion processes are controlled and monitored,” said Daniel Nagl, Managing Director of Leistritz. “Our goal is to increase efficiency, achieve reproducible results and drastically reduce errors. At the same time, we offer our customers an answer to the current shortage of skilled workers by facilitating the daily work of machine operators and enabling even less experienced operators to achieve optimum results.” Leistritz also presented its LinXX Customer
Right: The new Feddem Automatic AirBlade
Service Portal. Customers can see relevant machine information such as machine number, operating hours, current warning messages and machine documentation in the portal. Other features include maintenance schedules and spare parts identification and ordering. The company has paid particular attention to data security and says the customer retains full control at all times on the integration of the machines into the internet and on what information is transmitted.
Customer collaboration Also at Fakuma 2024, Feddem presented the latest model of its FED 26 MTS twin-screw extruder equipped with 32 L/D and a 10 L/D extension module, 34 kW installed drive
16 COMPOUNDING WORLD | March 2025
Automatic AirBlade (FAA) which has been devel- oped to minimise beard formation in twin-screw extrusion. Bearding occurs when thermoplastic material or filler accumulates around the die outlet and hardens. In the case of complex compounds with a high filler content, this can lead to strand breaks which can impair both productivity and the throughput rate. Residues can also impact the optical and mechanical quality of the end product. The FAA offers an efficient solution to this problem by removing residues with a targeted stream of hot air. “The FAA was developed in close collaboration with one of our customers and tested under real production conditions,” said David Constroffer, Head of Engineering at Feddem. “[It] effectively minimises the negative effects of product residues at the nozzle outlet and thus ensures improved productivity and product quality.” Feddem also recently announced the commis- sioning of a new pilot plant where customers have the opportunity to carry out tests on a wear-pro- tected FED 43 MTS twin-screw extruder. The process length of the extruder can be adjusted from 32 L/D to 42 L/D and 52 L/D meaning a wide range of plastics can be processed. The system also features additional units such as the FSB side feeder, FSB V side feeder with vacuum support, and FSV vacuum side degassing. Meanwhile, at NPE 2024 in Orlando, Florida, US machine manufacturer Entek issued an update on its new high-output HT 162 twin-screw extruder (Compounding World June 2024). The company also announced that another new model, the HT 92, was in develop- ment representing the latest addition to the HT line which
began in 2020 with the HT 72. The display also included vent flow sensor technology shown mounted on a 103mm twin-screw extruder barrel, Vacuum Feed Technology (VFT) for increased output and improved product quality, 37mm QC3 stuffer with mounting arm and 4 x 43mm barrels to show reach/flexibility, as well as a range of live demonstrations. Entek also reported that its replace- ment wear parts business for twin-
www.compoundingworld.com
IMAGE: ENTEK
IMAGE: FEDDEM
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