Implementing Alkyl Ketene Dimer (AKD) emulsion in paper manufacturing requires a nuanced understanding of the process to achieve optimal results. NINGBO INNO PHARMCHEM CO.,LTD. shares key best practices to ensure efficient AKD sizing and superior paper quality.

The foundation of effective AKD sizing lies in the preparation and application of the AKD emulsion. It is vital to ensure the emulsion is stable, with uniform particle distribution. NINGBO INNO PHARMCHEM CO.,LTD. recommends maintaining recommended storage temperatures and handling procedures to preserve emulsion integrity. The point of addition to the pulp slurry is critical; it is typically introduced in the wet end, after screening and cleaning, to maximize retention on the fibers.

Controlling the pH of the pulp is paramount. AKD performs best in a neutral to slightly alkaline range (pH 7-9). Deviations from this optimal range can significantly impact sizing efficiency. Therefore, regular monitoring and, if necessary, adjustment of the pulp pH using alkaline chemicals are crucial steps. NINGBO INNO PHARMCHEM CO.,LTD. advises paper mills to establish a consistent pH control strategy.

Dosage management is another key aspect. The amount of AKD emulsion added should be carefully calculated based on the desired level of sizing, paper grade, and pulp type. Overdosing can lead to issues such as inefficient sizing or affect other paper properties, while underdosing will result in inadequate water resistance. NINGBO INNO PHARMCHEM CO.,LTD. provides guidance on optimal dosage ranges, often recommending a starting point based on specific mill conditions.

The curing process, which involves the chemical reaction of AKD with cellulose fibers, is accelerated by heat. Therefore, the drying section of the paper machine plays a vital role. Ensuring adequate drying temperatures and sufficient dwell time in the hot sections allows the AKD to fully react and form the hydrophobic layer. This step is critical for achieving long-lasting and effective sizing.

Utilizing retention aids can further enhance the efficiency of AKD sizing by improving the retention of the emulsion on the fibers, minimizing losses into the process water. NINGBO INNO PHARMCHEM CO.,LTD. suggests evaluating compatible retention aids that complement the AKD system.

Finally, troubleshooting is an inevitable part of process optimization. Common issues like inadequate sizing or deposits on machinery can often be resolved by adjusting dosage, improving pH control, ensuring emulsion stability, or optimizing drying conditions. NINGBO INNO PHARMCHEM CO.,LTD. offers technical support to help clients diagnose and resolve these challenges effectively.

By adhering to these best practices, paper mills can maximize the benefits of AKD emulsion, achieving superior paper quality, improved process efficiency, and enhanced cost-effectiveness. NINGBO INNO PHARMCHEM CO.,LTD. is committed to partnering with manufacturers to refine their AKD sizing processes.