They are coated with aluminium and plastic.
NoThere are no health concerns associated with the aseptic packageThe silver material you see on the inside of the aseptic package is an ultra-thin layer of aluminum, which forms a barrier against light and oxygen, eliminating the need for refrigeration and preventing spoilage without using preservativesAluminum does not touch the food productThe inside layer of an aseptic package, which touches the product, is polyethylene (plastic), not aluminumMoreover, there is no leaching of aluminum or aluminum components through the polyethylene layer This is at least what they say on their website.
