Infeed line for Jumbo machine can be made using blue belt conveyors or roller conveyors. In case of so wide sheets the reasons of stability improvement or elephant foot reduction don’t make a lot of sense, but many time the customers prefers blue belt because it becoming more and more popular. Blue belt choice is basically valiant, even if the stacks of board are handled with pallet underneath. The line operates automatically in the way to accumulate as much board as possible, and in order to separate the pile just upstream the pre-feeder.