(under subclass 233) Apparatus combined with means to physically disrupt the bond material causing adherence of fibers one to the other.
(1) Note. The defibering means may act on the pulp stock before, during or after digestion.
(2) Note. Apparatus for exploding or for impinging the material after digestion against a target is not considered to be mechanical defiberating means for this subclass. For
the locust of such devices see the search note below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247, for devices in which defibering occurs by explosion or impingement of the material against a target after digestion.
261, for defibering means combined with paper making apparatus other than digesters. SEE OR SEARCH CLASS
241, Solid Material Comminution or Disintegration, appropriate subclasses for defibering means, per se.
