Extruder for processing plastic materials, has screw that is provided with screw thread, where screw is supported in cylinder in rotatable manner

摘要

The extruder has a screw (3) that is provided with a screw thread (1,2), where the screw is supported in a cylinder (4) in a rotatable manner. The cylinder has a diameter in conveying direction adjacent to a feed zone (5). The diameter is equal to the diameter of the base of a groove. The screw has a greater diameter in the conveying direction adjacent to the feed zone.