Extrusion International 3-2026

35 Extrusion International 3/2026 tine tasks and helping to minimize downtime. Another important enhancement is the relocation of the EGR drive to the front of the pelletizer hood. This design change makes it easy to in- stall a screen pack changer between the Kombiplast’s discharge and the EGR pelletizer, as is commonly nec- essary when manufacturing cable compounds. Komibiplast and EGR: synergy for rst-class compounding results With its two-stage Kombiplast compounder and the EGR eccentric pelletizer, Coperion offers a tech- nology speci cally adapted to the manufacture of temperature- and shear-sensitive plastics such as PVC or cable compounds. The system is designed to ensure particularly gen- tle product handling throughout the compounding process, while also delivering high economic ef - ciency and maximum exibility. First, the raw materials are fed into the process section of a ZSK twin screw extruder using a twin screw ZS-B side feeder where they are conveyed, plasticized, mixed and homogenized. In its ZSK Mv 14 design with an increased torque of 14 Nm/cm³, the extruder handles the product extremely gently and achieves very high throughput rates. Product discharge takes place via the ES-A single screw that builds up the required pressure for the EGR eccentric pelletizer. In the pelletizing step the EGR cuts the cylindrical product strands exit- ing the die plate into uniformpellets using revolving pelletizing knives. The pellets are then removed by pressure conveying, with the help of new inatable seals installed for this purpose. The pelletizing knives are mounted onto a blade that is ec- centrically attached to the die plate. The blade’s rotation is in nitely ad - justable. Coperion customizes the quantity, diameter and geometry of the die plate holes according to the material properties and individual customer requirements. Coperion GmbH Theodorstraße 10, 70469 Stuttgart, Germany www.coperion.com EXTRUSION TECHNOLOGIES New Dimension in Extrusion Technology With the successful commissioning of two single-screw extruders with a screw diameter of 360 mm, BB Engineering (Germany) has set a new benchmark: single-screws for processing PET in this size have not been available on the market until now. The systems were recently commissioned at a Chinese customer's site and form the heart of modern BO-PET lm lines from Br¾ckner to produce optical lms that meet the highest quality requirements. T he newly developed extrud- ers feature a performance-op- timized barrier-screw design that enables throughputs of up to 5,400 kg/h. With a screw length of 11.5 m and a diameter of 360 mm, manu- facturing and transport posed spe- cial technical and logistical challeng- es that were successfully overcome. The total weight of the extruder is more than 46 t and its length of over 14 m underline the impressive di- mensions of this new machine class. Two powerful, energy-ef cient, water-cooled motors, each with an output of 700 kW, are used to drive the extruder. With this extruder size, BB Engi- neering has achieved a technologi- cal milestone in PET processing. The 360 mm extruders open up addi- tional possibilities for applications in the high-performance segment and underscore the company's strong position in the international market for extrusion technology. BB Engineering GmbH Leverkuser Str. 65, 42897 Remscheid, Germany www.bbeng.de