Double screw extruder
AssigneeHans Weber Maschinenfabrik GmbH
InventorRainer Viessmann
Life of this patent
Estimating the term…
Abstract
What is described is a twin screw extruder having two extruder screws (10, 34), each extruder screw (10) having a cylindrical core (12) and at least one web (14) running helically over the periphery of the outer cylinder face of the core (12), the surface of the web (14) comprising a peripheral side (18) and two flanks (22, 24), and a channel (30) being formed between adjacent web windings. The flanks (22, 24) of the web (14) have a waved progression in the peripheral direction.
Claims20
A twin screw extruder having extruder screws driven in opposite directions, each extruder screw having a core and at least one web running helically over the periphery of the outer face of the core, the web comprising a peripheral face and two flanks, and a channel being formed between adjacent web windings, wherein the flanks of the web have the shape of a wave running in the peripheral direction, and in that the width (W) of the channel is constant.
Dependencies are inferred from the claim text.