Rewinding machine and a winding method for a web of absorbent substrate

Abstract

A rewinding machine arranged to wind a web of absorbent substrate into multiple logs including a perforating module, a cutting module, a winding module and a control module, the web of absorbent substrate travelling into the modules according to a machine direction, wherein the perforating module is arranged to provide the web of absorbent substrate with regularly spaced perforation lines substantially transversally orientated relatively to the machine direction, wherein the cutting module is arranged to sever the web of absorbent substrate substantially transversally relatively to the machine direction, wherein the winding module is arranged to wind the web of absorbent substrate so as to produce logs of web of absorbent substrate, and wherein the control module is coupled to the perforating module and to the cutting module and controls the modules operations.

1 . A rewinding machine arranged to wind a web of absorbent substrate into multiple logs comprising a perforating module, a cutting module, a winding module and a control module, the web of absorbent substrate travelling into said modules according to a machine direction,
 wherein the perforating module is arranged to provide the web of absorbent substrate with regularly spaced perforation lines substantially transversally orientated relatively to the machine direction,   wherein the cutting module is arranged to sever the web of absorbent substrate substantially transversally relatively to the machine direction,   wherein the winding module is arranged to wind the web of absorbent substrate so as to produce logs of web of absorbent substrate, and   wherein the control module is coupled to the perforating module and to the cutting module and controls said modules operations such that:   at the transition phase between two consecutive logs, the control module is arranged to deactivate the perforating module and activate the cutting module from a first time corresponding to a log production cycle completed between 99.8% and 95% to a second time corresponding to a subsequent log production cycle completed between 0.2% and 5%, and   out of transition phases, the control module activate the perforating module and deactivate the cutting module.   
     
     
         2 . (canceled) 
     
     
         3 . The rewinding machine according to  claim 1 , wherein, out of transition phases, the control module is arranged to activate the perforating module and deactivate the cutting module from a first time corresponding to a log production cycle completed between 0.2% and 5% to a second time corresponding to the log production cycle completed between 99.8% and 95%. 
     
     
         4 . A method of manufacturing logs of absorbent sheet products chosen among the group comprising napkins, towels, kitchen towels, hand towels, toilet papers, wipes and facial tissues with the rewinding machine according to  claim 1 . 
     
     
         5 . A winding method, the winding method comprising the steps of:
 conveying the web of absorbent substrate according to a machine direction,   perforating the web of absorbent substrate by providing the web of absorbent substrate with regularly spaced perforation lines substantially transversally orientated relatively to the machine direction,   winding the web of absorbent substrate so as to produce logs of web of absorbent substrate,   severing the web of absorbent substrate substantially transversally relatively to the machine direction at a transition phase between two consecutive logs,   controlling the perforating step and the severing step such that:   at a transition phase between two consecutive logs, stopping the perforating step and resuming the severing step, and   out of transition phases, resuming the perforating step and stopping the severing step.   
     
     
         6 . (canceled) 
     
     
         7 . The winding method according to  claim 5 , wherein, out of transition phases, the perforating step is resumed and the severing step is stopped from a first time corresponding to a log production cycle completed between 0.2% and 5% to a second time corresponding to the log production cycle completed between 99.8% and 95%. 
     
     
         8 . A log of absorbent sheet products produced according to the winding method according to  claim 5 .