Pozzi Industri Group: Production of refrigerators for low temperature transport of anti-COVID vaccine

The Pozzi Industri Group has developed a new integrated solution for the production of professional refrigerators employed in the medical sector for the storage and transport at low temperatures of the anti-COVID vaccine in recent months. This type of refrigerator is required by the Pfizer vaccine but, in the near future, other vaccines placed on the market will also need professional coolers.

The combined solution studied by the Pozzi Industries Group includes a new type of universal foamimg fixture, the Saip Fastback foaming fixture and a suite of innovative polyurethane systems by Pozzi-Arosio. The Saip Fastback foaming fixture uses a technology that is characterized above all by its versatility. The change of the molds of the various models takes place quickly and easily for the operator who is able to alternate the foaming molds automatically during production. The change of molds takes place without production stops, avoiding the inevitable dead times of molds adjustment or modification, which usually have to be faced, saving time and energy. The Saip Fastback Foaming fixture system can be used for both professional and domestic refrigerators.

Going into more detail of Saip Fastback technology: the foaming fixture “hat” houses two molds, one operating in the lower part, the other, located on the top in the gearbox waiting position. An upper platform will allow operator to store the desired number of molds while an integrated crane system will allow the molds to move into the translation position.

The mold change takes place by the “hat” rotation, in about 20 s. The side walls of the foaming fixture can be configured by HMI (human-machine interface) and therefore they adapt according to the dimensions set; particularly important detail for the regulation of greater thicknesses insulation. The foaming fixture has a totally electric lifting system.

The mixing system is the result of a study that takes into consideration the characteristics of the most common polyurethane systems and is aimed at enhancing the performances of each type of system. The position of each nozzle inside the foaming head is designed to ensure maximum homogeneity of the result. The head is also configured to accommodate a third stream.

The dosing system allows the special thicknesses of medical refrigerators to be foamed in an optimal manner and, in association with the system, allows the creation of refrigerators capable of operating at the temperature required for the storage and transport of the Pfizer anti-COVID vaccine (-80 °C).

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