But it's also why caps on half-gallon paper cartons of milk and juice ... to the bottle with a small bit of plastic so the cap doesn't come off even when the bottle is open. By keeping the cap ...

Just about every plastic milk jug has a circular indent placed on its side, but why? Is it just decoration? Does it help ...

Strawless milk containers for ... To improve the roof-shaped cartons, Nippon Paper Industries changed the gluing of the aperture section to make it easier to open. Folds were added to the ...