Retention and Drainage Aid
Every point of first-pass retention lost is filler and fines paid for and thrown away.
Buying support
Wet End Retention And Water Treatment
Keeping fines, fillers and dye in the sheet, and keeping the water loop clean enough that they stay there.
Measure what is leaving
First-pass retention sets how much of your filler, fines and dye you are paying for twice.
Add charge where the anionic trash is
PolyDADMAC and Polyamine are high charge density cationic polymers that bind anionic fines, fillers and dyes to fibre.
Separate retention from drainage
Retention and Drainage Aid formulations target both, but drainage rate is what sets machine speed.
Control foam before it becomes a defect
Defoamer types - silicone, polyether and fatty alcohol based - suit different pulp systems, and work through stock prep, white water and coating colour.
Close the loop deliberately
PolyDADMAC also does duty in wastewater treatment, removing suspended solids and colour. DADMAC 65% is available for mills polymerising their own aids.
Products in play
What You Will Be Choosing Between
PolyDADMAC
Anionic trash in a closed loop drags down retention and drainage at the same time.
Polyamine
Retention, drainage and wet strength are usually three products and three dosing points.
Defoamer
Foam in stock prep and white water becomes sheet defects and slower drainage.
DADMAC 65%
Mills and formulators polymerising cationic aids in-house need monomer with consistent concentration and low impurity.
Frequently Asked Questions
What does wet end retention and water treatment involve?
Keeping fines, fillers and dye in the sheet, and keeping the water loop clean enough that they stay there.
Which products are involved?
Retention and Drainage Aid, PolyDADMAC, Polyamine, Defoamer, DADMAC 65%.
Do you support the trial on the machine?
Send the grade, furnish and target and we will give a dosage starting point and the sequence to run. Technical questions go to the same WhatsApp thread.
Wet End Retention And Water Treatment
Send the grade and the target and we will walk the sequence with you.