Physical Property Modifications in UV-Curable, Pressure Sensitive Adhesives
Research chemists investigated three UV-curable PSA formulations, making four modifications to each PSA to vary performance. These experiments were designed to help formulators determine which additives will help them achieve the specific physical characteristics needed in their UV-curable PSAs.
Traditionally, PSA formulations have been solventborne and based upon modified rubber chemistry. Due to today’s stricter environmental-compliance regulations, these solventborne PSAs are being challenged by low-VOC, fast-curing systems such as ultraviolet (UV) and electron beam (EB).