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for all retention and drainage aid systems the time taken for a fixed volume of backwater to collect becomes lower and lower as the dosages are increased. see the graph above. on the paper machine running systems at such high levels of flocculation ( 1.5kg/t polymer) would tend to lead to poor sheet formation with areas rich in fibres and areas

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some ketone dimer sizing can double as retention aid (or retention agent). retention aid may be purchased in powder or liquid form and helps pigment adhere to the fiber. directions for use vary with supplier. when using the ketone dimer sizing as retention agent, the pulp is thoroughly mixed with this additive before mixing in pigment.

paper retention aid dispersant agent used in papermaking,sinofloc dispersant agent, with shorter dissolving time, has been widely used in the papermaking of tissues, household papers writing papers and napkins. enhance dry-wet degree and tension. sinofloc is committed to help our customers and this industry to reduce water consumptions, improve the paper quality and increase the equipment productivity.

papermaking retention aid. — pots and paper by steph

for reference: this 25g bag of powder will make 5 litres of liquid retention aid. we mix up 2.5g at a time to make 500ml of retention aid and this lasts us a few weeks a little goes a long way! the liquid retention aid has a shelf life of around 2 months in the fridge and the powder should be stored in a cool, dry place.

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performances, and the best retention rate was greater than 85% at the dosage of 0.6 wt%. our experimental results suggest that collagen wastes have a great potential to produce novel high-performance retention aids. introduction in the process of papermaking, retention aids are usually introduced into the stock suspension to improve the perfor-

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briefly stated, the purpose of a reten-tion aid copolymer is to help in the reten-tion of fiber fines,filler particle,and other finely divided materials during the forma-tion of a paper sheet [1]. retention aids also can affect dewatering rates [2-4], reduce the frequency of unscheduled down-time [1],improve z-directional uni-formity,and

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retention aid (powder): retention aid can be adsorbed on the surface of suspended solids in an extended structure to form a charge center and attract oppositely charged particles (fine fibers and.

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  • What is a retention aid in a paper mill?
  • Retention Aid is the key to cost savings in paper mill. Retention aids are used wet end of the paper mill to improve retention of fine particles, fillers, additives sizing agent during the formation of paper.
  • Should a retention aid be used in papermaking?
  • Use of a retention aid would minimize Ti02 buildup in the system and avoid these losses. The' use of flocculants to improve drainage, or water removal, in the papermaking process is a rel-atively new development compared with filler rete-ntion. Papermaksrs are primarily interested in drain-age aids because they Improve machine speeds.
  • Do paper machines have a good retention system?
  • Indeed, the new generation of paper machines has shifted the focus from dewatering to an emphasis on retention and formation. To achieve good retention at these high-shear condi-tions, a retention system with greater floc strength is essential.
  • Why are papermakers interested in better retention of fiber fines?
  • Also, recent increases in pollu-tion control measures have made the p ipennaker more interested in improved retention of the cheaper mater-ials such as clay and fiber fines. Papermakers also have become more aware recently of the potention economics in improved retention of fiber fines.