This company has installed a new WIP area in several steps, choosing blue belt conveyors. The main advantage of blue belt conveyor is related to the stack height, that can be greater because the stack stability. The height growth gives more WIP capacity, and it makes this technology more competitive. The WIP area is designed as two tier LIFO (last in first out) WIP, where a shuttle car is feeding the WIP with the board which is coming out from the take- off area, and another shuttle car is feeding the converting machines. The shuttle cars are running at high speed to achieve the performance of the corrugator and converting machines. On the converting area, there is a jumbo machines, and some lines of the WIP can operate to accumulate on big stack of two smaller stacks.