Sealing lots of bags? Band sealers are easy to use and seal poly bags as fast as you can insert them into the unit. These units are fully adjustable with temperature and speed. Higher temps are needed for thicker bags and/or faster recuperation. Bags are sealed and congealed then fall off the end of the short conveyor belt. Start bag into the belts, and the machine will "carry" the bag, seal and optionally emboss coded messages on the bag.