| 摘要 |
Apparatus and a method for manufacturing plastic tubes (12) including the steps of extruding a plastic tube (12) from an extrusion head (10), the tube (12) having a first cross-sectional area as it leaves the extrusion head (10) and downstream of the extrusion head (10), causing the plastic tube (12) to have a second cross-sectional area, greater than the first cross-sectional area. |
