Sizing
AKD Emulsion
Internal sizing for improved hydrophobicity and resistance to liquid penetration.
Overview
AKD Emulsion is an internal sizing solution based on Alkyl Ketene Dimer technology. It is used in papermaking to create resistance to liquid penetration and improve sizing performance, particularly in neutral and alkaline systems. AKD reacts with the hydroxyl groups on cellulose fibre during the drying and curing stage, forming a covalent ester bond rather than simply coating the fibre, which is why its sizing effect continues to develop for some time after the sheet leaves the machine.
Applications
Where it is used
- Writing and printing paper
- Paperboard
- Packaging grades
- Neutral and alkaline papermaking
- Paper and board requiring moisture resistance
Benefits
Why mills choose it
Improved hydrophobicity
Water and liquid resistance
Suitable for neutral to alkaline papermaking
Low application rates can provide effective sizing
Supports paper quality and printability
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