Sizing Agents

water-holdout.jpgSolenis offers a wide array of sizing agents to help papermakers improve the aqueous holdout of their products, whether it be a printing paper or packaging board that must meet a specific performance standard, such as the UN Cobb water absorption test. Our portfolio of internal sizing agents includes a range of chemical compositions — alkyl ketene dimer (AKD) size, alkyl succinic anhydride (ASA) size and rosin size — for superior hydrophobicity, retention and distribution in acid, neutral or alkaline sizing environments. We also offer promoter resins to enhance the performance of AKD- and ASA-based internal sizing agents. Proprietary PFAS-free additives are also available for molded pulp applications requiring water and oil holdout.

Our portfolio of sizing agents also includes standard and proprietary surface sizing agents designed to address market needs calling for enhanced surface sizing. Proprietary surface treatments include surface sizing agents for recycled linerboard/testliner that improve strength and adhesion and specialized treatments for printing paper and packaging board that improve inkjet and HP Indigo print performance.

Complementing our portfolio of sizing agents is a global team of applications experts who are ready to help you select the best chemistry to address your specific needs. These experts will also help you apply the chemistry in the most efficient manner, specifying proven best practices designed to ensure your success.

Our portfolio of internal sizing agents and surface sizing agents includes a variety of chemical compositions and proprietary formulations:


  • Alkyl ketene dimer (AKD) size
  • Alkenyl succinic anhydride (ASA) size
  • Alkenyl ketene dimer (AnKD) size
  • Dispersed rosin size
  • Fluid rosin size
  • Reactive surface size
  • Styrene acrylic emulsion (SAE) surface size
  • Styrene maleic anhydride (SMA) surface size
  • Styrene acrylic acid (SAA) surface size
  • Wax emulsions
  • Proprietary surface treatments
    • Recycled linerboard/testliner
    • HP Indigo digital presses
    • Inkjet printers
  • Proprietary PFAS-free additives for water and oil resistant molded pulp applications

In addition to our portfolio of sizing agents, we also offer a variety of monitoring and control solutions, including:


Complementing our portfolio of sizing agents are a variety of field and laboratory service offerings, including: 

  • Application expertise
  • Diagnostic expertise
  • Laboratory analysis
    • Defect
    • Deposit
    • Paper and board
  • Laboratory testing
    • Bristow wheel
    • Cobb test
    • Contact angle
    • Edgewick
    • Grease resistance (kit test)
    • HST (Hercules Sizing Tester)
    • Pet food
    • Water drop
  • Papermaking studies
    • Dixon coater
    • Hand sheet forming
    • Pilot paper machine
    • Pilot size press

Contact us today to learn more about our internal sizing agents and surface sizing agents.