Press Information

27. September 2017

60 years of ZSK twin screw extruders

Stuttgart, September 2017 –  The ZSK twin screw extruder, the “forefather” of all twin screw extruders, celebrates its 60th anniversary this year. Werner & Pfleiderer, known nowadays as Coperion GmbH, delivered the first co-rotating, closely intermeshing ZSK twin screw extruder in 1957 – exactly 60 years ago. Since then, the ZSK extruders have undergone a transformation that was inconceivable 60 years ago – from what would now be considered relatively simplistic co-kneaders with a throughput rate of 170 kg/h to sophisticated, high-performance processing machines for a variety of applications in the plastic, chemical, food and pharmaceutical industries. They are manufactured with screw diameter sizes ranging from 18 to 420 mm and achieve throughput rates from 200 g to 125 t/h for polyolefins...

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