Importance

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Abstract

A defibration device includes: a casing having a supply port through which small pieces containing fibers are supplied and a discharge port through which defibrated materials of the small pieces are discharged; a rotator rotatably installed in the casing; and a pipe body which is coupled to the supply port and from which the small pieces are ejected into the casing. The rotator includes at least one diffusion vane provided at a side portion of the rotator that faces the supply port and diffusing the small pieces ejected from the pipe body, and at least one defibration blade provided on an outer periphery portion of the rotator and defibrating the small pieces, and a pipe axis direction of the pipe body intersects a rotation track of the diffusion vane when the rotator rotates.

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First Claim