RAY-MELTER series melting unit for high-performance application of Hot Melt and hygroreactive Hot Melt (HMPUR) adhesives. Increased melt rate and easy opening system that guarantees a safe and quick maintenance of the melting unit. The automatic glue dosing system is governed by a central processing unit (CPU) that regulates all the system’s processes, the data processing, the set times, the alarms and the safety functions.