Multilayer procedure: the addition of the plastic film was the initial step to produce brick containers impermeable to liquids and warmth-sealable. Inside the 1960s, an aluminum foil started to be included to the cardboard container to make certain much better defense and prolong the shelf life of the packaged solution. https://ecofriendlywaterpackaging.blogspot.com/2025/06/tailored-for-tomorrow-sustainable.html