Abstract: Adhesive composition comprising starch, dextrine and a polyacrylamide. The composition is carried by water; but, when the composition is applied to a substrate, the water is evaporated to produce a water activatable adhesive. Thus, the composition is suitable for application to a paper backing to form an adhesive tape.Method of preparing the adhesive from a dry polyacrylamide starting material includes the steps of first dissolving the dextrine and dry polyacrylamide in water and allowing the dextrine and polyacrylamide to mix. The starch is then added to that mixture. Preferably, the dextrine and polyacrylamide are mixed for at least a half-hour before the starch is added. To prevent the particles of dextrine and polyacrylamide from agglomerating together, it has been found advantageous to mix the dextrine and polyacrylamide in small batches. This step, however, is not critical.

Abstract: An adhesive composition suitable for application to a paper backing to form an adhesive tape comprising amylose pectin, a medium molecular weight starch, urea, a sugar or sugar alcohol, a neutralized polyacrylate and water. The composition can be applied to one surface of a paper backing to form an adhesive tape suitable to be wound as a roll without premature bonding and without loss of adhesive strength.