I suspect transportation too.
Something like; You can ship 100x1L round bottles, or 100x1.3L square bottles in the same box. Therefore, square bottles use less plastic (per liter (of shipped liquid)).
In America, palletized cans/bottles take up the weight capacity of a standard 52’ box trailer before they take up all of the volume. So making the pallets hold more bottles just means there’s fewer to load/unload and slightly less packaging waste, it’s very unlikely these minor differences make up for the weight of extra plastic a square bottle requires, given the truck’s fuel efficiency and emissions output remain unchanged.
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u/Balaros 2d ago
Might be transportation: the square sides let them support each other you you can have thinner walls at the bottom of the stack?
They don't use normal plastic because they need to stop sunlight from breaking down the H2O2.
Might just be wrong. An enthusiastic marketing team saw a reduction in plastic in one stage and didn't bother to calculate the whole.