The machines are completely faired and provided with some safety devices according to the CE regulations in force. The dryers model E/100N are fixed and the door opening is manually operated. AlI the models are provided with some digital electronic instruments for the control of the times and of the temperatures of the cycle. The dryers model E/100R tilt forwards in order to unload automatically in the trolley at the end of the cycle. The machine tilting and the door opening are pneumatically operated. The models E/100 can be realized either with steam or with gas or diathermic oil heating.