semi-chemical pulp
A paper pulp produced by mild chemical treatment
of the raw materials followed by a mechanical
fiberization operation. Delignification is only
partially accomplished; consequently the
individual cellulose fibers are not completely
separated. The stock coming from the digester is
made up of either softened chips or a mixture of
free fibers and softened chip centers; therefore,
it must be mechanically fiberized in attrition
mills to produce a pulp that can be readily
felted. (17 , 320 )
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