| 摘要 |
PROBLEM TO BE SOLVED: To provide more uniform quality of a product by using a V-shaped helical thread with continuity in the forward and the backward direction as a screw flight for kneading a raw material to be supplied, in a resin extruder for kneading. SOLUTION: In the resin extruder for kneading which has a raw material supply aperture in the upstream side of a cylinder and a discharge aperture in the downstream and a further plasticizes/kneads and extrudes the raw material, a cylinder groove 14 is formed, spaced as specified, in the circumferential face of a cylinder hole in the kneading part where the screw flight of a V-shaped helical thread 10 continuing in the forward and the backward direction, is located. In addition, the raw material plasticized and kneaded in a screw groove surrounded by the V-shaped helical thread, is discharged into an external screw groove passing through the cylinder groove 14 to execute replacement.
|
