Alginate Application in Paper
Surface sizing is the main use for alginate in the paper industry. Starch sizing with alginate gives a smooth continuous film and a less fluffing surface. The alginate gives a size with better oil resistance and enhances greaseproof properties. If papers or boards need to be waxed, alginate will keep the wax mainly at the surface. When making corrugated boards, alginate is also used in starch adhesives because it stabilizes the viscosity of the adhesive.