•Collaboration with Escada Systems (UK), continual improvement of corrugator control.•Implementation and monitoring studies related to curl boxes. •Empirical and theoretical modeling of out-of-plan deformation of corrugated cardboard. Collaboration with the “Centre Technique du Papier” (CTP) and 3SR laboratory (Grenoble)•Development and establishment of self-checking and quality monitoring indicators for converting machines .•Studies and observations: communication from production teams to the site director.