Why aren’t plastic milk jugs sealed (also some teas, drinks, etc) AKA why does the milk always leak?

Question

Foil, plastic, foam-type things are on the orange juice and the coffee creamer and the Tylenol, etc. Why not on milk jugs?

I thought maybe heat issues, but it’s already undergone multiple heat treatments. Also thought maybe cause the product is so quickly meant to use, not worth the time. Then I thought, the attempt to make containers as thin as possible, and general motion would crack seal.

In: Technology

Answer 1

Hmm… all the milk jugs I’ve bought here so far (UK) have foil seals. So it’s surely possible and has helped prevent quits a few spills. Those screw tops come off by accident way too easily.