Patent ID: 6854682

Claim:
An apparatus for winding at least one web on a winding roll comprising at least a first roll, a second roll 4 and a third roll parallel to one another and to said winding roll, said apparatus having a nominal winding position in which: said first and second rolls and said winding roll are each in contact with said third roll; there is no contact between said first roll and said second roll, between said first roll and said winding roll and between said second roll and said winding roll; a first angle defined between a first half-plane delimited by the axis of said third roll and comprising the axis of said first roll and a second half-plane delimited by the axis of said third roll and comprising the axis of said second roll is smaller than 180°; a second angle defined between a third half-plane delimited by the axis of said third roll and comprising the axis of said winding roll and a fourth half-plane delimited by the axis of said third roll and comprising an intersection line is greater than 90°, said intersection line being defined as the intersection between the bisector plane of said first angle and the plane comprising the axis of said first roll and the axis of said second roll; and the apparatus further comprises means for causing said third roll to position and align freely between said first and second rolls and said winding roll when said apparatus is in said nominal winding position.