Apparatus and method for defibering unconventional material

Details Apparatus and method for defibering unconventional material Apparatus and method for defibering unconventional material

D - Textiles, Paper

21

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D21D 5/00 (2006.01) D21B 1/34 (2006.01) D21D 1/00 (2006.01)

Patent

CA 1159294

ABSTRACT OF THE DISCLOSURE A vortical circulation type pulper has a vaned rotor and an annular bladed and channeled stator mounted in a side, or bottom, wall, the rotor and annular stator having a truncated conical interface with the small end re- ceiving stock for passage through the interface to the large end and thence for discharge or recirculation. Rotor/stator clearance, at rest, is about 15/1000 of an inch. The stator is provided with an annular, pattern of alter- nate, acquisition valleys and bladed and channeled peaks, each peak having an acquisition edge in the path of the outer bladed edge of the rotor vanes so that the stock is reduced by the scissors-like contact of rotor blade edge and stator peak edge until sufficiencly defibered to enter the truncated coni- cal, bladed and channeled rotor/stator interface for recirculation or discharge.

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