| 摘要 |
PROBLEM TO BE SOLVED: To apply excessive compression to the needlelike filler to be kneaded in a kneading part by the edge part 36a of a kneading disk 36 to break the same. SOLUTION: The outer shape of the leading end part of the front surface side in the rotary direction A of the kneading disk 1 forms protruded curved surfaces 13, 14 looking from in the direction crossing the center axial line of screw 41 at a right angle.
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