Hot Melts Hold Fast

Hot melt adhesives are widely used to produce PSA labels and tapes on a variety of paper and plastic liner materials substrates. Because hot melts are designed to take the heat, shipping and storage temperatures are unlikely to present a problem for the adhesive (when properly stabilized with antioxidants). What can present an issue, however, occurs between adhesive and liner material. The cold-cure UV-silicone liner coating must provide a barrier between the liner material and adhesive without undergoing undue interactions that can affect proper release. One key measure of that performance is the opening force, and it should remain constant for a long period.