| 摘要 |
<p>In this new process, a gear extruder, a device superficially resembling a gear pump, extrudes rubber mixtures and plastics. This comprises a casing with inlet and extrusion channels, which also contains two interengaging gear wheels (2) and pair of rollers (3) to draw in the raw material (9). In the novel design, for each gear wheel, there is an induction channel passing the raw material through the rollers, ahead of the location (7) where the gear teeth run past the chamber walls, pressing the material into their teeth. Also claimed is the corresponding gear extruder</p> |
