Andritz has successfully started up a PrimeFlow AT headbox with dilution control at the Casalino Carta Srl. mill in Rocca Grimalda (Alessandria), Italy. The aim of the rebuild was to improve the basis weight profiles and formation of the PM1 packaging paper machine, which has a production speed of 305 to 570 m/min and a width of 2.9 m at the pope reel.

The PrimeFlow AT accelerating tube headbox has uniquely nested trapezoid outlet features - in addition to a rugged design structure - lamellas in the nozzle for turbulence control, and a dilution profiling system with high resolution. This provides excellent jet quality, fiber dispersion and fiber orientation control over a wide range of grades and speeds.

Giovanni and Alessandro Casalino, owners of Casalino Carta Srl., say: "We want a high-quality end product so that we number among the top European producers of Ecocraft packaging, corrugated medium and MG-creped paper. This is why we opted for the Andritz equipment. We are convinced that the new headbox will help us to meet our targets."

Casalino Carta Srl. is one of Italy's leading packaging and creped paper producers (Ecokraft, parent reels of towel paper, fold and roll towels for hygienic, sanitary and household use), and is putting more and more focus on the production of high-quality packaging grades.