Multilayer Process: the addition of the plastic film was step one to make brick containers impermeable to liquids and heat-sealable. Within the nineteen sixties, an aluminum foil started to be additional into the cardboard container to be certain improved security and extend the shelf lifetime of the packaged solution. Now https://customizedpaperbottles.blogspot.com/2025/04/the-rise-of-eco-friendly-packaging.html