Patent ID: 7328553
Filing Date: 2008-02-12
Classification: B65B

Abstract:
1. A unit for overwrapping packets of substantially rectangular prismatic shape presenting two larger side faces parallel one with another and with a longitudinal axis, two smaller flank faces disposed parallel to the longitudinal axis and normal to the larger faces, and two end faces normal to the longitudinal axis, comprising: a first folding conveyor rotatable about a relative axis and performing the initial steps of an operation whereby a sheet of wrapping material is folded around the two side and two flank faces of the packet; a plurality of holder mechanisms mounted peripherally on the first folding conveyor, each pivotable about a respective axis parallel to the axis of rotation and serving to support respective single packets disposed with the longitudinal axis parallel to the selfsame axis; each of the holder mechanisms comprising means for gripping and retaining a first end of the sheet; each of the holder mechanisms comprising means for holding and restraining a second end of the sheet; a second folding conveyor rotatable about an axis parallel to the axis of the first folding conveyor, by which the operation of wrapping the sheet around the two side and two flank faces of the packet is completed.