Production of soft paper products from old newspaper

Details Production of soft paper products from old newspaper Production of soft paper products from old newspaper

1994-06-29

1996-12-10

Czaja, Donald E.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 13, 162 72, 162147, 162111, D21C 502

Patent

active

055826814

ABSTRACT:
A sanitary paper product made from newspapers containing coarse cellulosic fibers and printed with ink that contains oil and a method for making the same is provided. The method has the step of (a) pulping the newspapers in water with agitation to produce a pulp slurry at a consistency between 3% and 12% and a pH below about 8.0; (b) adding to the slurry an enzyme selected from the group consisting of cellulase, hemicellulase, and lipase and maintaining the pulp slurry at a temperature above about 100.degree. F. for at least 15 minutes; (c) maintaining at least about 2% of the of oil in contact with the newspaper fibers beginning with the making of the pulp slurry in step (a) through step (b); and using the enzyme treated pulp as a major source of fiber in the paper making process to produce a sanitary paper products.

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