A carton machine will pick up a single piece from a stack of fold carton and then get it to stand up straight, or erect. The machine will fill it with a product or a number of products horizontally through an end that is open, and then close it by tucking an end flap of the carton or putting on glue or adhesive. It is not that hard to understand, but for those who aren’t involved in the cartoning field, it can be a little tricky to understand if they haven’t seen one first-hand in action. http://www.kdpackmachine.com/cartoning-machine/