Method of reducing the resin content in sulfite pulp
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United States of America Patent
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Feb 25, 1997
Grant Date -
N/A
app pub date -
Feb 14, 1995
filing date -
Mar 4, 1994
priority date (Note) -
Expired
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Abstract
Provided is a method for reducing resin content in sulfite pulp, in an ozone bleaching process where the sulfite pulp is bleached using ozone, at a pulp concentration of about 6 to about 14% by weight, and at a pH of less than about 7. The process includes the steps of alkalizing the sulfite pulp to a pH of greater than about 7 after ozone bleaching and then mechanically processing the sulfite pulp to press resin out of the sulfite pulp.
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