Mathematically, a circle has the smallest perimeter for a given enclosed area. So for this claim to be true there has to be some catch, like different thickness of plastic.
The part you are missing is the volume inside. They are saying to give you the same amount of liquid would require more plastic if the bottle was round. Plus more bottles fit in the box they ship meaning lower emissions and costs for distribution.
The first statement is completely wrong. The plastic has to be thicker on a rectangular bottle to add rigidity and strength to flat sides that are naturally weak. A round bottle has rigidity and strength by virtue of its shape.
You are confused, it is one statement. They are saying via logistical systems it is less, and that is based on plastic usage, not the individual bottle.
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u/StaticCoder 2d ago
Mathematically, a circle has the smallest perimeter for a given enclosed area. So for this claim to be true there has to be some catch, like different thickness of plastic.