How do you guys make that?
9,000 pound roll of paper goes through a corrugator machine which uses heat and pressure to form a sheet of board to whatever dimension the box calls for (we make mostly amazon/miller-coors/dr.pepper (motts)/mushroom boxes).
Stacks of sheets then get sent to converting machines to be ran through a rotary die cutter (no glue, mostly trays or boxes that fold up to make a box and hold together) or a flexer folder gluer (slotted, glued, folded).
My machine can do 400 boxes per minute