Drying Adhesives is obtained by solvent evaporation, water evaporation or coalescence (When water or solvant is evaporated, the polymers’molecules become closer and closer until to form a continuous film adhesive) of a water based dispersion polymer. They are made of polymers dissolved in solvent (Polychloroprene, Polyurethane) or dispersed in water (white glue based on PVA (Polyvinyl acetate, cellulose, casein, polyvinyl alcohol or polyvinyl pyrrolidone composition).