Modern Single Drum Winders

Abstract

According to the demands from printing industry, paper mills are requested to ship roll products with better quality and larger size rewound rolls year by year. In order meet the demands of market, winder makers realized that they should make highly sophisticated winder with full automation. Therefore, the targets are for better quality of rewound roll and automation for saving labor cost.
In order to achieve the target, Jagenberg developed center-winding system for obtaining better quality of rewound rolls and also completed full automation system for core feeding and taping device. Our new winder Vari-Plus is so designed that one operator can cover full operation of Vari-Plus winder.
As to rewound roll quality, it is clear that we can obtain stress free rewound roll because of center winding with the lowest nip pressure from main rewind drum, thus makes ideal hardness of rewound rolls.
Besides, we can operate winder with better runnability tension regardless rewound roll hardness because we have tension isolating device between running tension and rewind tension. This makes tight tension running and soft winding at the same time, which will be applied for rewound rolls for sheeter. In addition, soft tension running and harder roll rewinding at the same time, which is applied for roll shipping. It also applied for easy break paper like thin paper winding.