Sidel has revealed Nitro Square, a square-shaped, rPET-compatible bottle for still water with liquid nitrogen dosing – apparently reaching an hourly output of 2,600 bottles per mould on Sidel machinery.
Its rigid sections and flexible, pressure-absorbing surfaces work together to maintain the bottle’s square shape and facilitate high resistance. Meanwhile, its flat sides reportedly allow for easy customizability and on-pack branding.
The bottle also features Sidel’s wave-shaped StarLITE-R Nitro base, which is designed for stability and drop resistance alongside visual appeal.
Available in single-serve and multi-serve formats, the bottle is said to be suitable for existing Sidel solutions like Universal, Series 2, and EvoBLOW machines.
“The nitrogen-dosed water bottle market is largely dominated by cylindrical forms, as this is the natural shape created by the internal pressure of the bottle’s contents,” explains packaging innovation polymer expert Xavier Monnier.
“Nitro Square allows manufacturers to elevate their brands with a unique square design that stands out on the shelf, secures its shape and performance across the supply chain and is valid for rPET.”
Earlier this year, Sidel unveiled its StarLITE-R STILL bottle base; this was designed to reduce blowing pressure, enable 100% rPET integration, and facilitate high-speed production. It is recommended for water, juice, milk, and edible oil bottles between 0.25L and 2.5L in size.
Since then, Win Win Water has bottled its alkaline electrolyte water in plant-based bottles made from TotalEnergies Corbion’s Luminy PLA material. Described as fully biodegradable, the bottles seek to overcome the environmental impacts of traditional plastic alternatives.
KHS and Husky have also launched PET bottles that use 5.89 grams of material to hold 591 millilitres of liquid. To increase stability, the shoulder design has been modified and the bottle body reinforced with functional webbing.
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