... roll stand,preheater,single facer ,transport conveyer, gluing machine ,double facer, CORRUGATED BOARD PRODUCTION LINEThe corrugated cardboard production line is ... roll stand,preheater,single facer ,transport conveyer, gluing machine ,double facer machine ,slitter scorer ,stacker and heating system ,air ... roller is drum type, with long service. automatic 5 layers corrugated paperboard product line