Patent ID: 7896284

Claim:
A rewinding machine comprising: a path for feeding a web material towards a winding system; an interruption member to interrupt the web material at an end of winding of a log; a core insertion channel, said channel being defined by a stationary rolling surface and a movable member including a series of parallel spaced apart flexible members entrained around at least two rollers; a core feeder to insert winding cores in succession in said channel; and an electrostatic device to electrostatically charge at least one of the web material and the winding cores to provide, due to electrostatic charges, reciprocal adhesion of each core and an initial free edge of the web material obtained by interruption of the web material at an end of winding of each log, wherein said electrostatic device includes at least one charge bar connected to a voltage source, said at least one charge bar being positioned along said channel, and said at least one charge bar is constructed and arranged within a closed path defined by said flexible members such that electrostatic charges are applied by said at least one charge bar to at least one of said web material and each said core after the core has come into contact with the web material to provide said reciprocal adhesion between said each core and said initial free edge of the web material.