Process for removing ink-bearing fines from dry-deinked secondar

Details Process for removing ink-bearing fines from dry-deinked secondar Process for removing ink-bearing fines from dry-deinked secondar

1984-10-25

1986-10-07

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 55, 209 3, 209 23, 209 29, 241 24, 241 28, D21B 108

Patent

active

046157670

ABSTRACT:
A method of deinking comprises: (a) mechanically fiberizing a secondary fiber source in a substantially dry state, preferably air dry, thereby producing a fibrous material consisting of substantially discrete fibers and ink-bearing fines: (b) depositing the fibrous material onto a moving screen or wire which retains fibers and allows fines to pass therethrough; and (c) lifting the fibrous material above the screen with upwardly directed forced air and redepositing the material onto the screen, whereby upon re-deposition of the material, additional fines pass through the screen.

REFERENCES:
patent: 3966126 (1976-06-01), Werner
patent: 4124168 (1978-11-01), Bialski et al.
patent: 4305507 (1981-12-01), Wittkopf

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