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PAPER AND PAPERBOARD PRODUCTION PROCESS AND CORRESPONDING NOVEL RETENTION AND DRAINAGE AIDS, AND PAPERS AND PAPERBOARDS THUS OBTAINED
PAPER AND PAPERBOARD PRODUCTION PROCESS AND CORRESPONDING NOVEL RETENTION AND DRAINAGE AIDS, AND PAPERS AND PAPERBOARDS THUS OBTAINED
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机译:纸和纸板的生产过程以及相应的新型滞留和排水艾滋病,并获得了纸和纸板
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摘要
The invention concerns an improved method for making paper, which uses a branched polymer prepared in invert emulsion as the main retention agent, and bentonite as a secondary retention agent (dual type system). The two additions are separated by a step for shearing the fibrous suspension (or mass). The invention results in highly improved retention and also highly improved dewatering. Moreover, it enables the bentonite content in white water to be reduced.
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