Duplex Styles Duplex premade pouch packing machines fill and seal tailor made premade pouches, two at any given time, at speeds of up to one hundred twenty cycles per moment. Perspective Machines The 3 most popular MAP procedures are gasoline flushing, barrier films, and scavenger or desiccant packaging. sealing. https://www.linpack.com/news/how-vacuum-packaging-machines-are-transforming-food-preservation