Apparatus for pulping waste paper materials

D - Textiles – Paper – 21 – C

Patent

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D21C 3/00 (2006.01) D21B 1/34 (2006.01) D21D 5/00 (2006.01)

Patent

CA 1083871

APPARATUS FOR PULPING WASTE PAPER MATERIALS Abstract of The Disclosure Recovery of paper fiber for reuse from waste paper materials containing plastic sheet and film is facilitated by the combination of a pulper in which the waste paper materials are pulped in a pulper equipped with a junk remover connected with the bottom of the pulper tub by a chute and provided with a recycling circuit by which the plastic and other lightweight trash picked up by the conveyor buckets in the junk remover is removed from the pulping system, passed through a detrasher for removing bulky objects, then passed through a deflaking station, and then returned to the pulper tub for further defibering. This continuous withdrawel of liquid from the junk remover and its return to the tub act to maintain the hydrostatic head in the tub at a higher effective level than in the junk remover tower and thereby to promote transfer of the plastic and other lightweight trash to the junk remover for removal by the recycling circuit.

305602

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