Elvanol 71-30 Polyvinyl alcohol DuPont Polyvinyl alcohol (PVOH) ADHESIVE >> Water-based Elvanol® 71-30 is a medium viscosity, fully hydrolyzed grade of polyvinyl alcohol. White and granular, it is soluble in hot water but insoluble in cold water and common organic solvents. For many applications Elvanol® 71-30 is prepared in water solutions. On evaporation of water, transparent films are formed which have high tensile strength and tear resistance. The binder characteristics of Elvanol® offer excellent adhesion to porous, water-absorbent surfaces. Elvanol® 71-30 offers a combination of excellent film forming and binder characteristics, along with insolubility in cold water and organic solvents. This combination of characteristics is useful in a variety of applications. In adhesive applications Elvanol® 71-30 can be used alone or often in combination with extenders such as starch, dextrin or clay. As the proportion of Elvanol® increases, the adhesive strength and water resistance also improve. Examples of Elvanol® adhesives applications include: for paper and paperboard, alone or in combination with other additives; as a component in industrial adhesives for bonding paper, textiles, leather, films and porous substrates; for laminating adhesives which are used in the manufacture of solid fiberboard, linerboard, spiral wound tubes and cores, and laminated specialties; in bag adhesives and pastes; and as an adhesive in corrugated container board. Medium viscosity, fully hydrolyzed polyvinyl alcohol. Provides transparent films which have high tensile strength and tear resistance. Offers very good adhesion to porous, water-absorbent surfaces. Can be used alone or often in combination with extenders such as starch, dextrin or clay in adhesives applications.