Rewinding machine and winding method
AssigneeFabio Perini S.p.A.
InventorsMauro Gelli, Roberto Morelli
Life of this patent
Estimating the term…
Abstract
The rewinding machine includes a weakening device for weakening the web material along a substantially transverse weakening line, along which the web material is severed at the end of the winding of a log. The weakening device is controlled so as to generate the weakening line in a manner synchronized with the completion of winding of the log.
Claims31
1-26. (canceled)
Rewinding machine for producing logs of web material, comprising a feed path of a web material, a winding cradle and a perforator, which forms perforation lines in said web material in order to divide said web material into single sheets that can be detached along said perforation lines;
- and said rewinding machine further comprising a weakening device for weakening the web material along a substantially transverse weakening line, along which the web material is severed at an end of winding of a log, said weakening device being arranged to generate said weakening line in a manner synchronized with the end of winding of said log and substantially matching one of said perforation lines.
A method for winding rolls of web material around winding cores, comprising:
- feeding the web material along a feed path;
- subdividing said web material into single portions that can be detached along transverse perforation lines;
- winding a quantity of the web material in order to form a first log of web material;
- when a given quantity of web material has been wound on said log, severing the web material in a severing position along said feed path, forming a tail portion of the first log and a head portion for starting the winding of a second log;
- starting the winding of said second log;
- wherein
- at end of the winding of said log, in a weakening position arranged along the feed path of the web material upstream of the severing position, a weakening line is formed on the web material at one of said transverse perforation lines;
- the web material is fed along said feed path moving said weakening line towards said severing position;
- and
- the web material is severed in said severing position.
Rewinding machine for producing logs of web material, comprising a feed path of a web material, a winding cradle, and weakening device;
- said weakening device comprising an applicator for applying a liquid along a substantially transverse weakening line for weakening the web material along said weakening line, along which the web material is severed at end of winding of a log, said weakening device serving to generate said weakening line in a manner synchronized with the end of winding of said log.
Method for winding rolls of web material around winding cores, comprising:
- feeding the web material along a feed path;
- winding a quantity of the web material in order to form a first log of web material;
- when on said log a given quantity of the web material has been wound, severing the web material in a severing position along said feed path, forming a tail portion of the first log and a head portion for starting winding of a second log;
- starting the winding of said second log;
- wherein
- at end of the winding of said log, in a weakening position arranged along the feed path of the web material upstream of the severing position, a weakening line is formed on the web material by applying a liquid along said weakening line;
- feeding the web material along said feed path moving said weakening line towards said severing position;
- and severing the web material in said severing position.
Dependencies are inferred from the claim text.