... roller paper ! we can making 3 ,5 ,and 7layer machine! Corrugated board production line generally includes the following parts: Mill ... Roll Stand, Pre-heater, Single facer, Overhead bridge conveyor, double decks heater for liner, Gluer, Double facer, ... The single corrugated board is then transmitted by the overhead bridge conveyor to multiple heater to be reheated, after this the ...