| 摘要 |
PROBLEM TO BE SOLVED: To positively seal a shaft seal end part with an internal molten resin, prevent an outer oxygen suction and white smoke phenomenon from occurring, and make it possible to cope with a high vacuum suction process. SOLUTION: This kneader is equipped with a viscoseal 5 with a function to return to the interior of a chamber 2 a melt-kneaded material which tends to be squeezed out to the outside, provided on the rotor shaft 1A sealing part of a material discharge side end part for the kneader for kneading a polymer material or the like. The number of strips in the threaded part of the viscoseal 5 is set at the integral multiple of the number of blades of a discharge blade part 3 on the delivery aperture 10 side of the kneader, and the number of thread root parts 4b to the resin which is present on the front face of the discharge blade part 3 is equalized each between the crest parts 3a of the discharge blade part 3. |
