PUR Hot Melt Adhesive PUR (Polyurethane Reactive), full name is moisture curing reactive polyurethane hot melt Adhesive. The main component is isocyanate-terminated polyurethane prepolymer. The adhesion and toughness of PUR (elasticity can be adjusted, and it has excellent adhesion strength, temperature resistance, chemical resistance and aging resistance. Reactive hot melt adhesives are heated before processing and applied in molten state. When the adhesive cools down, it builds up its green strength through a physical hardening process. Water molecules (from the substrate or the air) then trigger a chemical reaction which transforms the adhesive into an elastomer. After complete crosslinking, reactive hot melt adhesives provide a stronger bond with a superior resistance against moisture, heat and chemicals. PUR hot melt adhesive has become one of the important varieties in the adhesive industry in recent years. Now it is widely used in Edgebanding,Profile Wrapping,Flat Lamination,Foam Lamination,ect