Alkyl Ketene Dimer (AKD) has become a cornerstone of modern papermaking, prized for its efficacy as a sizing agent. NINGBO INNO PHARMCHEM CO.,LTD. supplies high-quality AKD wax, and understanding its application is key to unlocking its full potential. This article provides a detailed look at how AKD is applied and the performance benefits it delivers.

The application of AKD typically occurs at the wet end of the paper machine. AKD itself is a waxy solid at room temperature and needs to be converted into a stable emulsion before it can be effectively applied to the pulp slurry. This emulsification process involves carefully mixing the AKD with water and emulsifying agents, often under controlled temperature conditions. The resulting AKD emulsion is then added to the pulp stock. The precise point of addition and dosage control are critical factors that NINGBO INNO PHARMCHEM CO.,LTD. helps customers optimize to ensure maximum retention and efficacy.

Once the AKD emulsion is incorporated into the pulp, it attaches to the cellulose fibers. The magic of AKD sizing, however, truly unfolds during the drying phase of the paper machine. As the paper is heated, the AKD undergoes a curing process, reacting with the hydroxyl groups of the cellulose fibers. This chemical reaction forms ester bonds, covalently linking the hydrophobic alkyl chains to the fibers. This process is essential for achieving robust water resistance, a core benefit of AKD wax paper sizing.

The performance benefits derived from proper AKD application are manifold. Firstly, it provides excellent water and ink resistance, crucial for printing and writing grades. This means sharper print quality and reduced feathering. Secondly, AKD contributes to improved paper strength and durability. The hydrophobic nature also enhances the paper's resistance to environmental moisture. For applications like food packaging paper sizing, this ensures the integrity and safety of the packaged product.

The efficiency of AKD is also noteworthy. Its effectiveness at neutral pH paper sizing processes means less chemical usage compared to traditional acidic agents, contributing to cost savings and reduced environmental impact. NINGBO INNO PHARMCHEM CO.,LTD. emphasizes the optimal performance that can be achieved with their alkyl ketene dimer neutral sizing products, ensuring that paper mills can meet demanding quality standards while maintaining cost-effectiveness.

In conclusion, the application of AKD wax by NINGBO INNO PHARMCHEM CO.,LTD. is a well-established process that yields significant performance enhancements in paper manufacturing. From ensuring proper emulsification and retention to facilitating the crucial curing reaction, each step is vital for imparting superior water resistance, durability, and printability. By leveraging these AKD wax paper coating and finishing solutions, paper producers can consistently deliver high-quality products that meet market expectations.