Tianjin Chemsum New Materials Co., Ltd. · Papermaking chemistry since 2005
Chemical production plant with reaction columns under a clear sky
Buying support

Building An AKD Sizing Programme

Choosing between buying wax, buying emulsifier, or buying a ready emulsion - and making the curing work either way.

  1. Decide where you want the emulsification to happen

    Mills with their own emulsification plant buy AKD Wax and AKD High Polymer Emulsifier. Mills without one buy Liquid AKD ready to dose. Both routes reach the same sizing chemistry; they differ in capital, control and preparation time.

  2. Match the system pH

    AKD performs in the neutral to slightly alkaline range, pH 7 to 8.5. Systems that still run acidic are better served by Cationic Rosin Sizing Agent, which works under acidic to weakly neutral conditions and reduces alum dosage.

  3. Fix the AKD on the fibre

    Retention systems decide how much of the AKD you dosed actually stays in the sheet. Retention and Drainage Aid, PolyDADMAC or Polyamine are the usual partners.

  4. Get the curing right

    Drying and curing temperature determine whether sizing develops on the machine or over the following days. AKD Curing Agent accelerates the esterification and evens out sizing towards the reel edges.

  5. Add surface sizing if the print side needs it

    Anionic Surface Sizing Agent runs at the size press alone or alongside starch, AKD or ASA, and is where linting, dusting and coating holdout get addressed.

Products in play

What You Will Be Choosing Between

AKD Wax supplied by CHEMSUM in labelled export packaging
Paper Sizing Agent

AKD Wax

Emulsifying your own AKD only pays if the wax purity and particle size are consistent.

AKD Curing agent supplied by CHEMSUM in labelled export packaging
Paper Sizing Agent

AKD Curing agent

AKD that has not fully cured leaves sizing developing for days after the reel, and edges that size differently from the middle.

Frequently Asked Questions

What does building an akd sizing programme involve?

Choosing between buying wax, buying emulsifier, or buying a ready emulsion - and making the curing work either way.

Which products are involved?

AKD Wax, AKD High Polymer Emulsifier, Liquid AKD, AKD Curing agent, Cationic Rosin Sizing Agent, Anionic Surface Sizing Agent.

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.

Building An AKD Sizing Programme

Send the grade and the target and we will walk the sequence with you.