A turret winder is a standard solution for an automatic reel change for center driven winding. But the good winding geometry is disturbed when the indexing movement starts as the optimum winding position at the contact roll has to be left. Auxiliary devices as rider rolls or an indexing contact roll will help here only partly and will be no entire replacement for the contact roll even during winding with highest speeds.

But this is different at the high speed turret winder HAW: Each winding station has its own contact roll system and its own reel change system. So the indexing movement cannot disturb the winding process any more and winding is perfect from the first to the last layer. The reel change is performed at full winding speed with a rectangular cross cut onto adhesive prepared cores. These can be supported either shaftless or on winding shafts - depending on the request. When using winding shafts the integrated winding shaft handling system - also developed by SOMATEC - is an interesting alternative for the traditional shaft handling outside of the machine.  Here the shafts remains within the winder and an additional external shaft handling is not necessary.

Unloading of wound reel and winding of actual reel	Indexing for core loading
Winding in unloading position and loading of a new core	Cross cutting and lay-on of the web onto the new core

• Fully automatic reel change at highest web speeds up to 1500 m/min (4900 ft/min)
• Best winding results from the first to the last layer by optimal winding conditions even during indexing and during reel change cycle
• precise contact roll pressure control
• Optional automatic reel handling and winding shaft handling available