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US 7,350,739 B2Granted
Method for producing logs of web material and rewinding machine implementing said method
AssigneeFabio Perini S.p.A.
InventorsRomano Maddaleni, Roberto Morelli, Mauro Gelli
Life of this patent
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Abstract
A method for producing logs (L1, L2) of web material (N) wound around tubular cores wherein the tubular core (A1-A4) is equipped with glue to secure the initial end of the web material and allow winding. Part of the glue applied to the tubular core is transferred to the web material (N) before it is severed upon termination of winding the log, to seal the final free end of the formed log.
Claims22
A method for producing logs of wound web material, comprising:
- winding a quantity of web material around a first winding core to form a first log in a winding area;
- upon termination of winding the first log, bringing a second winding core, with glue on a surface thereof, into contact with said web material;
- severing the web material to produce a tail end of the first log and a leading end to form a second log around said second winding core;
- transferring a portion of the glue from the second winding core to a portion of the web material to be wound on the first log, in proximity to the tail end, which is glued to the first log, and unloading said log from the winding area, wherein said portion of the glue is transferred by the second winding core to the web material before severing of the web material.
1 more element
A peripheral rewinding machine to produce logs of web material wound around tubular cores, comprising:
- a winding cradle with at least a first winding element around which said web material is fed;
- a feeding means to introduce said tubular cores towards said winding cradle;
- a means to sever the web material upon termination of winding each log;
- a glue dispenser to apply a glue to said cores, before introducing the cores into said winding cradle;
- wherein said feeding means and said means to sever the web material are synchronized so that a winding core is brought into contact with the web material fed around said first winding element before the web material is severed, and wherein introduction of the winding core and operation of the means to sever the web material are coordinated so that the web material is severed in an area upstream, in respect to a direction of feed of the web material, of an area in which said winding core transfers a portion of the glue applied to the winding core to the web material.
2 more elements
Dependencies are inferred from the claim text.