We offer an assortment of pouches, mailers and tubing made from recyclable materials and compostable plastics like monolayer PLA, clear cellulose and PE+D2W. The bags look the exact same. Unless you will be in the bag company You can't explain to the primary difference. However, printing is different. Sartorius https://traysealingmachinemanufac58135.ampedpages.com/modified-atmosphere-packaging-machines-secrets-62065945