Production of soft paper products from old newspaper
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United States of America Patent
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-
Dec 10, 1996
Grant Date -
N/A
app pub date -
Jun 29, 1994
filing date -
Jun 29, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
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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Family
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