Most hot melt adhesive users believe that the value of “viscosity” is an important parameter to various application techniques. The truth is that viscosity in hot melt manufacturing is simply an indicator to determine the consistency between produced batches or lots. In other words, viscosity is simply useful for quality assurance (QA) and quality control (QC). Viscosity variances are the easiest way to determine that your adhesive is not the same product. Read Complete Article >>

Hot Melt Viscosity vs. Viscoelasticity - by Pierce Covert, Glue Machinery Corporation