Method and apparatus for producing defibrated cellulose fluff from bales of compacted wood pulp sheets
AssigneeCurt G. Joa, Inc.
InventorGeorge S. Grosch
Life of this patent
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Abstract
Method and apparatus for producing defibrated cellulose fluff from bales of stacked compacted wood pulp sheets. A face of such a bale or stack is advanced against a milling cutter. The milling cutter and bale are moved relative to one another in the plane of said face to sweep the cutter across all portions of the face and disintegrate the sheets. Fluff thus produced is drawn through a foraminous screen for further disintegration and defibration of the fluff particles. In preferred embodiments, the baled stack is rotated on a vertical axis over a milling cutter which rotates on a horizontal axis. The milling cutter is mounted beneath a bed having a port through which the periphery of the mill is exposed to the face of the bale.
Claims17
A method of producing defibrated cellulose fluff from wood pulp sheets baled in stacks of such sheets and comprising the steps of advancing a face of such a stack against a rotary cutting mill having a curved periphery, rotating the cutting mill on a horizontal axis with a portion of its curved periphery exposed to the face of the stack, and rotating the stack on a vertical axis to move it horizontially and produce relatively motion in the plane of said face between the stack face and the curved periphery of the cutting mill.
A method of producing defibrated cellulose fluff from wood pulp sheets baled in stacks of such sheets and comprising the steps of advancing a face of such a stack against a milling cutter and producing relative motion in the plane of said face between the stack face and cutter, said cutter comprising a rotary cutting mill rotating on a horizontal axis, said stack being primarily supported on its said face on a bed which has a port through which said face is exposed to the cutting mill, the portion of the stack above said port being biased by gravity against the periphery of the cutting mill.
Apparatus for defibrating cellulose fluff from compacted wood pulp sheets baled in stacks of such sheets and comprising a rotary cutting mill having a horizontal shaft, a bed above the cutter, said bed having a port through which the periphery of the cutting mill is exposed, a bale cradle above the bed, means for depositing bales of such stacked wood pulp sheets into said cradle to dispose a portion of the face of such stack against the periphery of the cutting mill through said port, and power means for rotating the cradle and contained bale on a vertical axis and producing relative motion in the plane of said face between the stack face and said cutter to sweep all portions of said face over said port and against said cutter.
Apparatus for defibrating cellulose fluff from compacted wood pulp sheets baled in stacks of such sheets and comprising thereabove rotary cutting mill having a horizontal shaft, a bed above the cutter, said bed having a port through which the periphery of the cutting mill is exposed, a bale cradle above the bed, means for depositing bales of such stacked wood pulp sheets into said cradle to dispose a portion of the face of such stack against the periphery of the cutting mill through said port, and power means for rotating the cradle and contained bale on a vertical axis and producing relative motion in the plane of said face between the stack face and said cutter to sweep all portions of said face over said port and against said cutter, in combination with conveyor means to supply fresh bales to said cradle as a partially exhausted bale in the cradle is reduced in height by the action of the cutting mill, said conveyor means including means to advance a fresh bale to a position above said cradle and deposit said fresh bale into said cradle on top of a partially exhausted bale in said cradle.
Dependencies are inferred from the claim text.