The start-up of the rebuilt PM1 machine is scheduled for the second quarter of 2012. The value of the order will not be disclosed.Metso's delivery will include rebuilds of the coating and drying sections. The drying capacity will be increased with two OptiDry Vertical impingement dryers enabling both a production and a speed increase. Replacing the coating station with an OptiLayer curtain coater and a new coating color supply system will further improve the folding boxboard quality.Cartones Ponderosa, located in San Juan del Río is the leading producer of coated cardboard in Mexico. The company produces more than 50 percent of the total Mexican recycled coated board made, and is the only exporter in its field.