| 摘要 |
<p>The invention relates to a device for an extruder, which device comprises a body (21,22) with at least a first (24) and a second (25) helical channel for guiding the material to be extruded, wherein the first helical channel (24) has a clockwise direction and the second helical channel (25) has a counterclockwise direction, and wherein the first and second channel intersect at regular intervals.</p> |
