BB Engineering Developed Extruder with High Throughput
By its own account, German firm BB Engineering GmbH – part of Brückner Group – has closed a gap.
The machine building company underlined that with the successful commissioning of two single-screw extruders with a screw diameter of 360 millimeters, it has set a new benchmark: single-screws for processing PET in this size have not yet been available on the market. “The systems were recently commissioned at a Chinese customer’s site and form the heart of modern BO-PET film lines from Brückner to produce optical films that meet the highest quality requirements,” the provider informed. The extruders would open up additional possibilities for applications in the high-performance segment.
The newly developed extruders feature a performance-optimized barrier-screw design that enables throughputs of up to 5,400 kilograms/hour. “With a screw length of 11.5 meters and a diameter of 360 millimeters, manufacturing and transport posed special technical and logistical challenges that were successfully overcome. The total weight of the extruder is more than 46 tons, and its length of over 14 meters underline the impressive dimensions of this new machine class. Two powerful, energy-efficient, water-cooled motors, each with an output of 700 kilowatts, are used to drive the extruder,” the machine builder gave account, whose product portfolio includes machine components such as extruders and filters as well as complete spinning and recycling plants.
(Published in GLOBAL RECYCLING Magazine 1/2026, Page 40, Photo: BB Engineering GmbH)
