Apparatus for glueing the tail of logs of web material

In an apparatus for glueing the tail of a web of material forming a roll or log, which apparatus includes means for unwinding the tail of the material wound on the log, means for detecting the end of said tail, means for applying glue on the web material, said glue serving to adhere the end of the tail onto the log, means for rewinding the log and glueing the tail thereon, and means for moving said log;

• said apparatus characterized in that it includes:
• a pair of endless conveyor members (13, 15) whose active branches (13A, 15A) are parallel and superimposed to each other and spaced apart an extent slightly less than the diameter of the rolls or logs (R) and moving forward in the same direction,
• the upper active branch (15A) being longer than the lower active branch 13A,
• a group (31) for unwinding the tail (L) of the material of the log (R), located upstream of said endless conveyor members (13, 15) able to control the position of the end edge of said tail (L) by a sensor (39);
• a glue dispenser (58) downstream from the lower endless conveyor member (13) for dispensing glue from below onto the outer surface of the log, and a rewinding station (RR).