Apparatus for the dry defibration of sheets of fibrous cellulose

Details Apparatus for the dry defibration of sheets of fibrous cellulose Apparatus for the dry defibration of sheets of fibrous cellulose

1985-06-18

1987-06-16

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Rotating comminuting surface

241 28, 241295, B02C 1912

Patent

active

046731369

ABSTRACT:
Apparatus for the dry defibration of sheets of wood pulp cellulose and like materials comprises a tubular casing to which the sheets to be defibrated are fed substantially radially and a cylindrical rotor rotatably mounted within the casing substantially coaxially of the casing itself. The rotor has external teeth for impinging on the material to be defibrated. The rotor is constituted by a plurality of externally toothed discs and spacer members connected together in a pack in an arrangement in which the spacer members alternate with toothed discs. The general plane of each disc is at a predetermined angle to planes perpendicular to the axis of rotation of the rotor whereby, during rotation, the periphery of each disc describes a respective substantially cylindrical surface coaxial with the axis of rotation of the rotor. The distance between adjacent toothed discs and the angle of inclination of the discs are selected so that the substantially cylindrical surfaces described by adjacent discs at least touch each other.

REFERENCES:
patent: 54260 (1866-04-01), Sloan
patent: 758042 (1904-04-01), Bartlett
patent: 2403193 (1946-07-01), Rawson
patent: 3170640 (1965-02-01), Kolts et al.
patent: 3825194 (1974-07-01), Buell
patent: 4241881 (1980-12-01), Laumer

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