MACHINERY | TWIN SCREW EXTRUDERS
Right: Feddem Service
Engineer Dirk Breuer with Nexam Process and Mainte- nance Engineer Sebastian Holm beside the new 52mm MTS extruder in its plant at Lomma in Sweden
One of the most recent to join the ranks of twin
screw extruder makers is Intelligent Pelletizing Solutions (IPS). Best known for its pelletising systems and components, the addition of co-rotat- ing twin-screw extruders to its product portfolio last year takes it into the compounding systems business area for the first time. IPS is offering five different sizes in its DSE
range, extending from 32mm to 90mm screw diameter. The machines are designed to provide high throughput rates while maintaining consist- ently high product quality. A modular design provides the flexibility required to adapt the machines to a variety of processing requirements, ranging from recycling and regranulation to compounding. Accessibility, fast product changeover, and ease
Below: Feddem’s latest development is the FSB-V vacuum feeder, designed to easy feeding of low bulk density materials
of operation were said to be priorities in the development of the range. Side feeders, for example, can be easily and quickly detached for effective cleaning, the company says. Alongside the DSE development, IPS invested €500,000 in a significant expansion of its technical centre at Niedernberg, Germany. This included the installation of an IPS-DSE 60 machine with 60mm diameter screws and two side feeders that is available for project trials. “Our target group is companies from the
recycling and compounding industry that, like us, are medium-sized and value individual solutions from a single source, personal support and direct, consistent contact partners,” says Gerald Weis, IPS founder and Managing Partner. “Every system that leaves our production hall is tailored to the customer’s needs.”
When Swedish company Nexam was looking for a new compounding plant for the production of reactive masterbatches for its plant at Lomma it turned to German machine manufacturer Feddem. The project was challenging — Nexam hoped to not only produce its existing product range more efficiently but to also develop new types of reactive masterbatches. A key
requirement for the production equipment was suitability for ATEX (explosive atmosphere) operation, which required consideration of safety measures and adaptation of the extrusion line. The company also had a limited amount of over- head space due to existing metal structures in the building. The project kicked off with trials
42 COMPOUNDING WORLD | March 2023 IMAGE: FEDDEM
at the masterbatch manufacturer AF-Color, which is a sister company to Feddem within the Feddersen Group. These allowed Nexam the opportunity to test products on the Feddem equipment and to validate formulations and their mechanical proper- ties in a laboratory setting. “Thanks to our ICX technology, a standardised machine concept, we were able to guarantee the customer a functioning production process for his products on a small extrusion line with low costs and fast set-up times,” says David Constroffer, Head of Project Management at Feddem. “This technol- ogy enables us to make subsequent scale-ups to implement the required throughputs or individual adjustments to the subsequent production line without running the risk of losing batch consistency in the final line.” Feddem developed a plant concept that met
Nexam’s stringent requirements and could be delivered on a tight schedule. Based on the company’s required throughputs and formulations, an FED 52 MTS 36 L/D extruder was selected and a system assembled including two FSB side feeders, raw material dosing equipment, vacuum and cooling systems. The extruder was also equipped with the capability to add liquid additives by means of an injection nozzle. Feddem recently added a new option to its FSB side feeders — vacuum support. “The new Feddem FSB-V side feeder with vacuum assistance has been developed to optimise side streams into the compounding process,” says Business Development Manager Klaus Hojer. “Air is sucked out of the metered side stream before it enters the extruder.
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IMAGE: FEDDEM
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