Adjustable Sealing Temperature
TPU adhesives are most frequently used in bonding operations where heat activation is part of the process. The optimum adhesive strength can be achieved at a given temperature of the adhesive film. Therefore, to reach such temperature is very important.
These values change depending on the nature of the soft segment (polyol) that exists in the TPU.
Solvent-based TPU adhesives and adhesives based on water dispersible TPU pellets produce, after application and drying, non-blocking adhesive films, which can be made tacky by heating.