Hot melt adhesive is amorphous, so it has no melting point, only a softening point. Generally, it only needs to be about 50 degrees above the softening point, so most hot melt adhesives can melt at about 150 degrees. The lower the temperature, the more the melting speed of the glue will be slower. , the viscosity of the glue is relatively high and the fluidity is poor. If the temperature is high, it is easy to carbonize. However, the viscosity of the glue is lower at high temperatures and the fluidity is better...