US Patent 7461681 Roller for the transferring labels

A roller (1) for transferring labels of the suction type, comprising a lateral surface (21) having a plurality of openings (2) communicating with respective suction conduits (3) to maintain a label adhering to said lateral surface (21). Originally, at least one of the suction conduits (3) is provided with at least an additional opening (5) located in a position that cannot be obstructed by the label adhering to the lateral surface (21) of the roller (1), to maintain said conduit (3) in constant communication with the external environment. Said additional opening (5) is preferably positioned in an upper area (41) of the roller at a suction opening (3).