ABSTRACT
Solvent-based adhesives are mostly solutions of rubber-resin mixtures or acrylic copolymers. The physical properties depend on both components, namely on polymer and solvent, and on the composition of the adhesive solution. The wet-out of solvent-based pressure-sensitive adhesives (PSAs) is less difficult than with water-based PSAs. The coating rheology of solvent-based PSAs concerns the rheology of a true solution, thus is mainly viscosity driven and more simple than that of water-based systems. The convertability of the adhesive is characterized by the parameters such as the wet-out, the coating rheology, coating speed, and versatility. Shrinkage concerns the change of the original dimensions during storage at room or higher temperatures due to chemical or physical influences. The coatability of the adhesive depends on the face stock and release liner. Noncoated papers, clay-coated papers, colored papers, paper-film laminates, and special papers also are used as face stock material.
