Tack Measurement Of Heat-Activated Polyurethane Adhesives
This article offers a methodology for quantifying the tack performance of polyurethane dispersions as well as blends with other polymers.
Polyurethanes are a class of adhesive raw materials that, over the last 40 years, have developed a reputation for reliability and high performance in many applications. Properties of polyurethane adhesives can be tailor-made to fit applications due to the great variety in raw materials that can be used to formulate polyurethanes.1 As environmental legislation limits the further use of solvent-based systems, there has been rapid growth in the area of water-based polyurethanes.
Typical performance characteristics of aqueous polyurethane dispersions include the following.