DEFIBRATION TREATMENT APPARATUS AND FIBER PROCESSING APPARATUS

A defibration treatment apparatus including a feeding hole through which a material is fed， a rotator that rotates about a rotational central axis， a fixed member that covers at least a portion of the rotator， and a discharge opening that discharges a defibrated object obtained by defibrating the material between the rotator and the fixed member. In the defibration treatment apparatus， the rotator includes a plurality of rotary blades that extend in directions away from the rotational central axis， at least a portion of the fixed member is configured of a screen including a plurality of openings， the screen is disposed at a position corresponding to an outer rotational circumference of the rotator， and a discharge path in communication with the discharge opening is provided along the screen and on a side opposite the rotator with respect to the screen.