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An Innovative Solution for Water Bottling Using PET

D. Scardigno1 A. Castellano1 P. Foti1 A. Fraddosio1 S. Marzano1 M.D. Piccioni1
1DICAR, Politecnico di Bari, Bari, Italy

Displacements along the axis for the collapsed bottle without pressurized gas.

We study an innovative technology for water bottling using PET, aimed at reducing the thickness of the plastic bottles. The goals are the reduction of the amount of plastic used for a single water bottle, the reduction of the packaging costs and more environmental sustainability. The required thickness of the bottle depends on its structural function: when carried, the bottles are piled one on top of the other and, consequently, they are subject to a mechanical loading. Our innovative solution is to introduce in the bottle a suitable amount of pressurized inert gas in the free space over the water. The pressure of this gas partially balances the external loads, and thereby the thickness of the bottle can be reduced. Here, we study the structural behavior of a particular thinner pressurized bottle, and then analyze the effectiveness and the criticality of this lay out.

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