A primer is designed to enhance the bonding quality of adhesives. When adhesive primers are applied as a surface coating, they will change the base of a surface to enable more effective adhesion.

The requirement of primer is dependant upon the substrate type, and each primer is manufactured to prepare different surfaces.

Ellsworth Adhesives supplies a vast range of adhesive primers manufactured by Henkel, 3M, Permabond and Dowsil (Dow Corning).