PRE-WASHING TANK

The pre-washing tank has the function to settle and separate stones and heavy metals in the pre-washing phase, which could damage the following machines. Thanks to its special structure, the tank allows, by water and air injections, the floating of the plastics parts even though contaminated by earth and by any other contaminants which can change their specific weight. The residues and heavy materials are discharged by an extraction auger at the tank bottom. The innovative film flake extracting system is based on a combination of water power pressure and air insufflation system without any mechanical units, thus avoiding strong periodical maintenance.