Distribution in the length and width directions
is very good as determined by SEM using elemental mapping techniques.
However, fillers in paper tend to migrate to the screen side oft he paper
during manufacturing, so more zeolite particles will be on one side of
the paper sheet than the other.
The controlling standard is the weight percent
of zeolite and buffer in the dry paper.
It slightly strengthens the paper's mechanical
properties.
Zeolites are added to the paper slurry in
the pulp beater.
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