Process for producing a neutral paper
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United States of America Patent
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Feb 20, 1990
Grant Date -
N/A
app pub date -
Sep 29, 1988
filing date -
Oct 2, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A neutral wood containing paper can be produced by adding, to a stock slurry containing mineral filler and a large majority of high yield pulp, a cationized starch, and thereafter bentonite and colloidal silica either simultaneously or successively with a time interval of at most 60 seconds, resulting in an improved retention of fiber and filler, an improved drainage, and a decreased pitch problem.
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