The aseptic pack goes through a special sterilization process, optimally protecting the packaged product, in addition to maintaining varying degrees of oxygen barriers as required. They are available in several barrier choices of multilayer laminates and/or co-extruded films. The materials are highly resistant to perforation and can be combined with a wide range of closures , fitment and spouts. They can also be treated with gamma rays to achieve the necessary levels of sterilization and most common dose is 15 kgray or 25 kgray.
Aseptic bags are suitable for the efficient filling and dispensing of fresh, extended shelf life (ESL), aseptic liquid and processed food and fruits i.e. concentrated , puree, NFC and paste for their better preservation and longer shelf life. Standard size of aseptic bags are available from 3 liter, 5 liter, 10 liter, 20 liter and 25 liter, however, the the most common size is 200 Liter or 220 liter metal drum but it can go larger in IBC or intermediate bulk container (1000 liter IBC)