General Characteristics

General Characteristics

Solvent-based adhesives are formulated with different raw material groups, including natural and synthetic rubbers and suitable resin combinations (naphthas, ketones, esters or aromatics). They are also referred to as contact adhesives. Adhesive films are formed upon evaporation of the solvents. Assemblies may be made by contact bonding (adhesive application to both surfaces) or wet bonding (applied to one of the bond faces). Most contact adhesives are based on polychloroprene rubber. They exhibit good initial strength and achieve high strength on various substrates.

The ‘trick’ for applying this type of adhesive is to use organic solvents in which thermoplastic polymers are present. The solvent content of such adhesives is generally in the 75-85% range. After application, the solvent evaporates, thus allowing the macromolecules to build cohesion and bond to the substrate.

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