... of casing, shrink bag. The line adopts three bubble process to produce shrink film with high strength, good transparent, strong barrier properties ... film with our line and sale to all over the world including South America, Europe, Australia, southeast Asia, etc.1)triple bubble ... layer:3--74)triple bubble line lay-flat: 80--600mm5)triple bubble line film thickness:30--100um6)triple bubble line max line ...