By the higth rotating speed. the centrifugal force makes thepulp through many teeth between the stationary an rotaing teeth again andagaln.It results of fiber defibration.

• 由于动静盘间有适当的间隙，纤维仅作单纯的分散，不损伤纤维，作为短纤维浆板及二次纤维的疏解尤为有利。