Among the many materials used in diaper production, hot melt adhesive, though seemingly insignificant, plays a crucial role. As a key raw material in diaper production, hot melt adhesive plays an indispensable adhesive function. It is a plastic adhesive whose physical state changes with temperature within a specific temperature range, but its chemical properties remain stable. Hot melt adhesive plays a critical adhesive role in diaper production, becoming an indispensable material due to its non-toxic, non-polluting, and highly efficient adhesive properties. It is worth noting that different parts of the diaper use different hot melt adhesives during production, resulting in varying performance requirements.
Key factors affecting adhesive bonding include application temperature, application amount, open time, and contact pressure and time.
Application temperature, i.e., the temperature at which the hot melt adhesive degrades in the nozzle, needs to be controlled within a suitable range. Too low a temperature will lead to poor machinability, while too high a temperature will result in insufficient viscosity, poor thermal stability, and reduced cohesive strength. The bonding effect is affected by key factors such as application temperature, amount of adhesive applied, open time, and contact pressure, and needs to be controlled within a suitable range to ensure bonding quality.