Patent ID: 6901721

Claim:
A unit for overwrapping packets, comprising: a unit for transferring packets through an assembly station where the packets are united with leaves of wrapping material, and successively through a folding station where the selfsame leaves are bent around the packets; a cutter device to cut the wrapping material fed and to form the leaves; feed means to advance the leaves along a first path the feed means comprising a conveyor set in motion continuously along the first path while restraining the leaves advanced along the selfsame path, and the transfer unit comprising a plurality of carriers supporting the packets, each equipped with means to grip one end of at least one of the leaves of material adhering to the conveyor and detach it progressively from the selfsame conveyor before effecting art initial step of folding this latter partly around a relative packet, the conveyor comprising a suction roller set in rotation continuously about a relative axis, wherein the suction roller comprises a cylindrical surface having at least one opening, and each carrier of the transfer unit comprising respective gripping means having respective moveable jaws engageable with the opening of the suction roller.