APPLICATIONS
Furthermore it is possible to mould items consisting of two symmetric or asymmetric parts - such as the two halves of a suitcase - in a more economic way.

The possibility to adjust both the injection phase and the closing phase for each of the two moulds in a totally independent manner allows for production of two different parts, with the only constraints being that the same material is utilized for both moulds and that cooling times for both moulds are similar. Taking into consideration that normally recycled material is more sensitive to thermal degradation during the plasticizing process, this machine configuration guarantees an exploitation of the injection unit because the more the plasticizing unit is utilized the lower is the time that the material remains at high temperature.

The use of a three-platen machine in the above described configuration provides a productivity increase of almost 90% with respect to a standard single-mould machine. In comparison with a production process involving two identical tonnage machines, capital investment costs, operating costs and footprint space are considerably reduced while achieving a similar production rate

CLAMPING UNIT
The camping unit is characterized by a third platen situated in the intermediate position between the fixed and moving platens. This particular configuration makes possible the mounting of two distinct moulds at the same time. This technical solution allows the different phases of mould opening, ejection and injection of mould 1 to be performed during the cooling phase of mould 2.
The movement of the two moulds with a single double clamp toggle system requires a mould locking system during the cooling phase. This system ensures the locking between the third central platen and alternatively the fixed platen and the moving platen. The locking itself can be effectuated for any mould thickness. The locking system consists of two identically installed groups on each of the three platens of the clamping unit (moving platen, fixed platen and central platen), diagonally positioned one opposite the other

INJECTION UNIT
The injection unit is positioned perpendicular to the clamping unit , with the possibility of axial and transverse shifting of the unit itself. Two hot runners are positioned on the inside of the central platen that alternatively feed each mould, thanks to the presence of shutters integrated into the same system. The injection unit is disengaged during clamping system movement. The injection phase can be regulated independently for each of the two moulds: this technique allows for the moulding of different items