A method allows for rapid manufacture of relatively thick adhesive coatings using a continuous process, where a single thin coating is continuously converted into a single thicker adhesive laminate. An exemplary process includes the steps of: (1) producing a web having a first surface with an adhesive layer and a second surface with a release liner； (2) slitting the web longitudinally into a first section and a second section； (3) laminating a backing film to the adhesive layer of the first section； (4) removing the release liner of the laminate of step (3) exposing the adhesive layer of the first section； and (5) laminating the second section to the laminate of step (4), wherein the adhesive layer of the laminate of step (4) is combined with the adhesive layer of the second section.
