Gluing — Sticking With Direct Mail

For example, if a two-up piece is being glued on an 81⁄2˝ side, an extrusion machine will detect the presence of paper and begin the glue flow 1⁄4˝ away from the paper edge. Then, it will apply glue for 8˝, stop for 1⁄2˝, apply glue for another 8˝ and finally stop the flow 1⁄4˝ away from the trailing edge.