Hot melt glues are rapidly growing as industrial adhesives, in favour of waterbased and solvent adhesive systems. It’s quick setting, solvent free and have a very wide application area.
Other advantages are:
- Rapid drying and curing
- Long shelf life
- Low environmental impact
- Minimal waste
- Applicators are simple and low-cost.
- No shrinking, like water and solvents vapourizing
Quick setting because of fast cooling
Most hot melt adhesives are applied at 160°C with special equipment, most known are Nordson, Robatech and Valco Melton. Hot melts are also availabe for use with 11mm glue sticks and other shapes.
Being applied at 160°C may cause a thermal load of the substrate, even as heat can weaken the adhesive bond. Spraying a PSA hot melt adhesive may be a solution to prevent heat on the substrate.