The double facer is mainly used for bonding flat linerboard closely and firmly on the flute tips of single faced corrugated cardboard, consequently producing high quality single wall corrugated board through heating and cooling. This corrugation machine is mainly composed of a heating section and a cooling section.
Heating section is constructed from steam pipes, hot plates and conveyor belt as well as weight rolls on the belt. Heating is to facilitate gelatinization of glue in the paperboard, thus making it boned firmly and evaporating extra moisture.
Cooling section of the double facer consists of upper and lower conveyor belts between which the board is transported, hence cooling and forming the heated and dried corrugated boards and preventing against warping.Main Features of Double Facer