| 摘要 |
PROBLEM TO BE SOLVED: To provide a bi-axial different-direction rotary extruder in which a supporting structure of a root portion of a screw is added newly so that a pressure fluctuation in a cylinder is reduced much more.SOLUTION: The bi-axial different-direction rotary extruder includes a root portion supporting device 4 for supporting a root portion 3c of a screw. The root portion supporting device 4 includes: a ball bearing 17 which is disposed in a through-hole 16a arranged on a base end-side wall 16 of a cylinder 2 and used for rotatably supporting the root portion 3c of the screw 3; and a sealing member 18 for preventing the intrusion of an extruded material into the ball bearing 17. |
