SINGLE WORM EXTRUDER

摘要

A single worm extruder for the mixing and processing of rubber is disclosed. The worm consists of two sections, an intake section and a mixing section. The mixing section has lands countercurrent to those of the intake section for partially back-feeding the rubber on to the intake section to provide a turbulent current of material. The countercurrent lands are interrupted by gaps which collectively have the same total area as the cross-sectional area of the intake section. The gaps in the mixing section are of constant width and have a diameter of not less than 10 mm and not more than 12 mm. The mixing section has a larger core and outer diameter than the intake section.