Patent ID: 6048088
Filing Date: 2000-04-11
Classification: B29B,B29C

Abstract:
A multi-shaft screw-type extruder, comprisinga casing (2);at least two parallel and partially intersecting casing bores (42, 43);at least two shafts (3, 4) disposed in the casing bores (42, 43) and drivable to rotate in one of the same and the counter direction;screw elements (11, 17, 23, 26) fixed on the shafts (3, 4);intermeshing kneading disks (13), which are fixed on the shafts (3, 4), said disks having a disk width (B) and crest portions (30, 30') located in a periphery of the kneading disks (13); andmixing-and-scraping-studs (32, 32') formed by the respective crest portions (30, 30'), said studs (32,32') have a smaller width than said disk width (B), and said studs having peripheral faying surfaces (33),wherein the mixing-and-scraping-studs (32, 32') on each kneading disk (13) are misaligned in an axial direction such that the peripheral faying surfaces (33) of the mixing-and-scraping-studs (32) jointly cover the entire disk width (B) of each kneading disk (13).