Duplex Products Duplex premade pouch packing machines fill and seal custom made premade pouches, two at any given time, at speeds of approximately a hundred and twenty cycles for each moment. See Machines The three hottest MAP procedures are fuel flushing, barrier movies, and scavenger or desiccant packaging. Quadruplex https://www.linpack.com/news/choosing-the-right-tray-sealing-machine-for-your-business