When talking about “Super Soft” tissue, whose reels (mother and finished ones) have a low density and the structure of the web is more sensitive to permanent deformation, to the above factors we have to add the high relieving actions on chucks and rider rolls, necessary to keep tissue properties, that reduce the reels stability at high speed. In order to keep high the productivity of tissue winders, enabling them to match the output of tissue machines, also in those cases where speed cannot be raised, Tecno Paper has developed, and patented, rewinding methods able to increase the operation efficiency significantly. We mean that for the productivity “speed is not all”, but efficiency has a great impact. The most recently developed and patented method is the TP-StopLess, a Non Stop finished reels change system.
The main feature of this winding method is that the working speed is only slightly reduced and there is no intervention of the winder operator in the phase of reel exchange and evacuation from the winding position. From the points of view of the quality of the initial winding (keeping tissue properties) of the new reel and of the stability of both reels (newly forming and finished ones), the method allows the best conditions because both reels are constantly supported and in contact with the carrying drums; this allows the NIP against rolls and the entire winding operation are fully controlled from beginning to end, thus avoiding the bad situation that one of the two reels moves freely. Compared to a traditional winder for conventional tissue, the StopLess model has several additional elements, as evidenced in picture 1.