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Retention and Drainage Aids are a key to efficient paper making. A good RDA program will improve the filler and fines retention and improve drainage and thereby the runnability. RDAs can be combined with a micro particle program to provide controllable drainage and thereby improved sheet properties. Improved fines retention helps in back water clarity which in turn reduces effluent load. Performance of a DAF unit for fibre recovery can also be improved by addition of a flocculant from the RDA range.
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