They consist of a suitably braced support structure for the preform containment hopper made of AISI 304 stainless steel with a PEHD cover inside.
The hopper is equipped with full/empty hopper photocells connected to the electrical system. Under the tank there is a tipping system to bring the preforms close to the food grade PVC elevation belt up to the required height.
The elevation belt is equipped with an inverter to adjust the speed.