METHOD FOR FEEDING LINERLESS LABELS TO A LABELLING UNIT AND APPARATUS FOR FEEDING LINERLESS LABELS TO THE LABELLING UNIT

摘要

An apparatus for feeding a strip (1) of linerless labels (2) to a drum (60) for applying the labels onto containers comprises a strip support (10) for supporting a reel of a strip of linerless labels (2) and allowing unwinding of the strip (1) from the reel; a first motorized drive roller (20), designed to rotate in a direction of rotation to cause unwinding of the strip (1) arranged on the support (10) and continuous feeding thereof downstream in an advancement direction (X-X) of the strip; a second motorized drive roller (50), designed to rotate such as to cause advancing of the strip (1) towards the drum (60); a chamber (100) which is arranged between the first drive roller (20) and the second drive roller (5) in the direction (X-X) of advancement of the strip; a first upstream roller (11) of the chamber, motorized and rotating in the direction of rotation for advancing the strip, and a second downstream roller (120a) of the chamber, motorized to rotate in a direction opposite to that of the first upstream roller, said rollers being arranged at a respective upstream or downstream edge of the opening (101) of the chamber (100). Pressurized air is fed to a dispensing nozzle (202) arranged to dispense the pressurized air towards the inside of the chamber (100) and a control unit (500) is configured and arranged to cause the unwinding and continuous advancing movement of the strip (1) from the support (10) to the upstream roller (11) of the chamber (100) and an advancing movement of the strip with a predefined speed and tension between said downstream roller (120a,120) of the chamber (100) and the second motorized drive roller (50).