In addition to adhesive bonding, polyurethane foams can also be joined by hot air welding. For successful hot air welding, we need appropriate welding apparatus that enables accurate welding and good reproducibility of the process. In addition to preparation for welding, we also need optimal welding parameters that ensure sufficient heat input into the welding zone. The thesis presents polyurethane foam and its main properties. The apparatus for welding and its components as well as the optimal welding parameters are presented. The optimal parameters were determined using a trial and error approach. A manual tensile test and a microscopic analysis of the welds were performed. Based on the results, we determined a window of process parameters that enable successful welding of polyurethane foams.
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