To harness the full potential of cationic polyacrylamide (CPAM) in papermaking, understanding its correct dosage and application is crucial. NINGBO INNO PHARMCHEM CO.,LTD offers high-quality CPAM and guidance on its effective use. This article outlines key considerations for optimizing CPAM application to achieve superior retention, drainage, and strength enhancement.

The optimal dosage of CPAM is not a one-size-fits-all metric. It depends on several factors, including the specific paper grade being produced, the type of pulp used (virgin or recycled), the consistency of the pulp slurry, the presence of other chemicals in the wet-end system, and the desired performance outcomes (e.g., retention vs. strength). Generally, CPAM is used at very low concentrations, typically ranging from 0.01% to 0.1% based on the oven-dried weight of the pulp. However, precise titration and on-site testing are often recommended to determine the most effective dosage for a particular mill's conditions.

Proper application points are also critical. CPAM is most effective when added early in the papermaking process, usually before or at the fan pump, or in the mixing chest. This allows sufficient time for the polymer to interact with the furnish components and form optimal flocs before reaching the forming section. In some cases, sequential addition or combination with other additives, like inorganic coagulants (e.g., PAC) or microparticles, can further enhance performance. NINGBO INNO PHARMCHEM CO.,LTD can provide specific recommendations based on individual mill requirements.

The preparation of the CPAM solution is another vital aspect. It is typically prepared as a dilute aqueous solution (e.g., 0.1% to 0.3%) by slowly adding the powder to water under continuous agitation. This ensures complete dissolution and prevents clumping, which can lead to uneven distribution and reduced effectiveness. The solution should ideally be used within 24 hours of preparation to maintain its optimal properties.

By carefully controlling the dosage and application method of CPAM, paper manufacturers can unlock significant improvements in retention rates, drainage efficiency, and paper strength. NINGBO INNO PHARMCHEM CO.,LTD's commitment to quality and technical support ensures that clients receive not only a superior product but also the expertise needed to maximize its benefits. Investing in the correct application of CPAM is an investment in the overall efficiency and quality of the papermaking operation.