HEATNBOND SpraynBond Fusible Adhesive is a heat-activated spray that creates a permanent bond for fabric appliqué, home décor, and costume work. Spray one surface, let it set to a tack, then fuse with an iron to secure layers evenly across larger pieces where web sheets are hard to place. Because it is designed for no-sew bonding, test on your materials first and follow fusing directions carefully to avoid overspray and unwanted adhesion.