KNEADING SEGMENT, AND KNEADING APPARATUS COMPRISING SUCH A SEGMENT

摘要

Provided is a segment (1) for kneading which kneads materials in a manner such that the portions which were insufficiently kneaded would not remain as gel. The segment (1) for kneading is disposed on a kneading screw (4) which is housed in a rotatable manner in a barrel (3) having an inner cavity, and is provided with a kneading flight (12) which kneads the material supplied into the barrel (3) by rotating in accordance with the rotation of the kneading screw (4). The top surface (15) of the kneading flight (12) is formed with a concaved cutout section (13) which is formed by cutting a portion of the top surface (15) in the axial direction towards the inner diameter. The cutout section (13) is surrounded by two side surfaces (20), which face the axial direction, and a bottom surface (14), which is disposed between the side surfaces (20). The bottom surface (14) of the cutout section (13) is formed in a tilted planar shape in relation to the top surface (15). As a consequence, the opening (18) of the cutout section (13), which faces one side of the rotational direction of the kneading screw (4), has a larger area than the opening (19) which faces the other side.