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Bentonite
is crucial to paper making, where it is used in pitch
control (i.e. absorption of wood resins that tend to
obstruct the machines), to improve the efficiency of
the conversion of pulp into paper, and to improve the
quality of the paper. Bentonite also offers useful de-inking
properties for paper recycling. In addition, acid activated
bentonite is used as the active component in the manufacture
of carbonless copy paper.
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