Line suitable for the production of polyurethane sandwich panels with pentane expansion. This solution allows to be in compliance with the regulations in force. The pre-heating is electric (as option with Diesel oil, heating oil, etc.). The double belt press is 25 m long (as option 30 - 40 m). Lateral containments for 3 different heights (as option more heights). The cut requires a disk for overlapping. Unloader with rotation of roof panel (to save space). Packaging with plastic film. As option closure of head and container for pentane and polyurethane.