Corrugated Board Bridge ---Draped in an overlapping wave pattern to the double-backer station Purpose---lsolating the two ends of the corrugating machine; balance; slow down Adhesive roll Pressure belt WNNVAVVAVAVAVAYAVAVAVAAYAVAVAL Heating section Cooling sec Outside liner The double-backersection ofcorrugating machine where a second linerboard is applied to the single-faced material coming from the single -facer unit二. Corrugated Board Bridge ---Draped in an overlapping wave pattern to the double-backer station Purpose---Isolating the two ends of the corrugating machine; balance; slow down The double-backer section of corrugating machine where a second linerboard is applied to the single-faced material coming from the single-facer unit