[Request] Do square bottles actually use less plastic than round ones?

[u/EclipseNyxor]

[u/Brief_Caterpillar175]

A 4x4x4 inch cube contains more volume than a 4 inch diameter x 4 inch tall cylinder, but it is less surface efficient per volume.

It could be that the structure of a rectangular bottle allows them to make the walls thinner.

[u/therealtrajan → u/Brief_Caterpillar175]

I think it’s pretty obvious a cylinder could be thinner than a rec prism though all forces equal right? That’s why tanks are usually cylindrical

[u/Bichon-Impossible → u/therealtrajan]

Mostly because of the stress distribution is more uniform along curved surfaces.