Styrene copolymer (SC) rubber Adhesives

Styrene copolymer (SC) rubber Adhesives

Solvent-borne adhesives based on SC (often also called SBS or SIS adhesives) are generally applied with spray guns and are characterised by good spraying performance and relatively high solids content. For this group of adhesives, one or both substrates can be coated. A significant part of the solvents evaporates during spraying, which leads to a considerable increase in the viscosity of the adhesive. These adhesives are often used for bonding very porous substrates.

Even when applied in the thinnest layers, SC adhesives have a comparatively high contact tack during their open time. Joining the substrates while there is still a small amount of solvent in the adhesive ensures proper wetting of the bonding parts and a fast build-up of initial strength, even with low pressure or in high-tension bonding. After all the solvents have evaporated, there should be no residual tack. The bonded substrates can then be covered with fabrics or other materials, for instance, in the production of mattresses and upholstery furniture.³³