MATERIAL KNEADING DEVICE AND MATERIAL KNEADING METHOD

摘要

There is provided with a screw 3 that is inserted into a cylinder 2 an inside of which a material is loaded, and is rotatably supported in both end portions on an upstream side and a downstream side, or in an end portion on the upstream side, in the cylinder 2; a first kneading blade 521 including a plurality of first blades 32A, 32B that are helically provided on the screw 3 and send the material toward the downstream side with rotation of the screw 3; and a second kneading blade 522 including a second blade 33 that is helically provided on the screw 3 and returns the material, which is sent toward the downstream side by the first kneading blade 521, toward the upstream side, the number of blades in the second blade being smaller than the number of blades in the first blade.