Viscosity testing for hot melt adhesives

Hot melt adhesives are used in industry for a variety of applications, including crafts, electronic board manufacturing, parts assembly, and in the packaging industry. The published experiment was performed in accordance with procedures outlined in
the 'Standard Test Method for Apparent Viscosity of Hot Melt Adhesives and Coating Materials', as described in ASTM Standard D 3236-88.

In the example, a Brookfield RVDV2T Rotational Viscometer was used with a Thermosel temperature controller to bring glue sticks from two different manufacturers to a temperature of 175C. Disposable sample chamber HT-2DB and a disposable #27 spindle were used. Both samples were tested using the same set of speeds to ensure equivalent shear rates were being applied.