Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1982-03-12
1984-05-22
Smith, William F.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
435278, D21C 502
Patent
active
044500432
ABSTRACT:
A process for recovering pulp from pressure-sensitive carbonless copying paper waste is disclosed. This process includes defibrating the waste without substantial rupture of the microcapsules, treating the defibrated waste with an enzyme for starch saccharification and separating the fibers from the released microcapsules by means of a sidehill screen equipped with a washing shower.
REFERENCES:
patent: 3652383 (1972-03-01), deVos
patent: 4356058 (1982-10-01), Fischer et al.
Appleton Papers Inc.
McKinney E. Frank
Phillips, Jr. Paul S.
Smith William F.
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