Wet-end starches improve strength and print characteristics of ready paper and contribute at the same time to improved retention, dewatering and runnability at the paper machine.
The function of wet-end starch in the machine is affected by a number of factors such as fibre (raw material), pH, conductivity, charge and disturbing substances. A first step in the process of optimising the wet-end starch is to carry out a wet-end survey and to map which chemicals are being used. The objective of the wet-end survey is to map the function of the existing wet-end starch. A second step in the optimisation process could be a laboratory study to investigate the efficiency of different starches. Depending on your requirements we can select from the following evaluations;
- starch adsorption
- retention and dewatering
- sheet-forming study including strength evaluation
To achieve the optimum performance of your wet-end starch you need to secure a proper cooking and handling of the product, select an optimal product for a specific paper machine and an optimal addition strategy for the he product.
Solam has a broad product portfolio of anionic and cationic starches and we can offer cook-up starches and cold-water soluble starches. The cationic starches have a degree of substitution from 0.02 to 0.17. The brand name for Solam wet-end starches are Solbond.
The Solam team is ready to assist you to achieve the optimum benefit of your wet-end starch.