SCREW TO BE USED IN AN EXTRUDER AND EXTRUDER

The invention refers to a screw to be used in an extruder and to an extruder in which a screw as proposed here is employed. The screw has a modular structure so that it can be adapted very flexibly to new tasks and conditions. The modular structure of a screw contains a rod-shaped mandrel and indivi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MATHY, TORSTEN, SZURGOT, MATEUSZ
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention refers to a screw to be used in an extruder and to an extruder in which a screw as proposed here is employed. The screw has a modular structure so that it can be adapted very flexibly to new tasks and conditions. The modular structure of a screw contains a rod-shaped mandrel and individual screw components which are slidable onto the mandrel. The components perform the classic functions of the screw during the extrusion process, such as conveying, kneading, mixing or shearing of the plastic to be guided into and through the plant. For transmission of the occurring high torque the components are connected with the mandrel so that they positively engage and are axially braced in addition. The connection is to be performed such that it can be released by simple means. The invention relates to different aspects by means of which an advantageous positive engagement between the screw and the mandrel can be implemented.