Lybra LGR cooled masterbatch metering unitThe masterbatch metering unit for PET applications

Float block image lybra lgr x web

The unit can accommodate up to two independent dosing stations, which can even be of different capacities and be retrofitted to meet changing production needs.
Each dosing station can be configured for individual capacities ranging from 1 g/sec, up to 170 kg/h.
Each dosing station comprises a hopper containing the granules to be dosed and is equipped with a proprietary loss-in-weight control to measure the amount of material carried by the dosing screw to the PET main stream. The mixture is then continuously transferred by gravity from the Lybra’s central block to the plasticizing screw of the moulding machine.
The dosing auger is available in three different configurations with single, dual or triple helical shaft, for controlling material dosing in low percentages with a high level of accuracy and repeatability.
Lybra LGR is particularly suitable wherever there is a need for frequent color or production changes, which thus entail promptly adapting the operating conditions of each metering station.


● Control and management of masterbatch consumption
● No dosing variations: 4 times more accurate
● Advanced touch screen HMI
● Winfactory 4.0 - PET ready


Piovan Group President’s message

23 March 2020 S. Maria di Sala, Venice, Italy

Dear Partners,
I would like to update all of our Stakeholders concerning the current operativity of Piovan Group during the medical emergency of COVID-19. Firstly, I want to reassure all of you that any choice and future activity have, as a primary aim, the health and safety of our Collaborators and of our Customers, duly following the regulations issued by the Governments where we operate.
All production sites, service & sales companies are operating with continuity.

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