Лако-красочные материалы — производство

The formulation of starch and dextrin adhesives can be viewed more as an art than the result of rigorous scientific study. Not surprisingly, the purpose for which the adhesive is to be used and the method by which it will be applied greatly determine the properties needed in the resin. Factors that must be controlled include viscosity, solids content, stability, tack, slip, substrate penetration, drying rate, flexibility, water and microbial resistance, and cost. Some of these are determined by the type of starch or modification, while others require the addition of an additive to give the adhesive the desired properties. In the sections below we discuss some of the most common additives that are used with starch-derived adhesives.