Device and method for closing the tail end of logs of web material and relative logs obtained therewith
AssigneeFabio Perini S.p.A.
InventorMauro Gelli
Life of this patent
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Abstract
The device comprises a system for unwinding a portion of the web material from the log R, and a system for rewinding the tail end on the log after application of an adhesive. Moreover, a folding member 21 is provided, to fold the tail end and form a fold of web material defining a portion for gripping and detaching the folded loose end from the roll.
Claims38
A method for closing a tail end of a log of web material using an adhesive, comprising steps of:
- unwinding a portion of web material from the log;
- applying said adhesive;
- rewinding said portion of web material to make the tail end adhere to the log, wherein said tail end is folded before said rewinding to form a folded end of web material which includes a portion for gripping and detaching the folded end from the log;
- wherein said adhesive is dispensed at a level of a supporting surface of the log;
- and wherein said adhesive is applied by a movable dispensing element, which picks up said adhesive from a container and applies the adhesive to the portion of web material unwound.
A device for closing a tail end of a log of web material, comprising a system for unwinding a portion of web material from the log and a system for rewinding the tail end on the log after application of an adhesive, including a folding member to fold the tail end and form a fold of web material defining a portion for gripping and detaching a loose end of the fold of web material from the log;
- wherein said folding member comprises an adhesive dispensing element, which during movement thereof applies adhesive to the tail end and causes folding thereof.
A device for closing a tail end of a log of web material, comprising a system for unwinding a portion of web material from the log and a system for rewinding the tail end on the log after application of an adhesive, including a folding member to fold the tail end and form a fold of web material defining a portion for gripping and detaching a loose end of the fold of web material from the log;
- and an adhesive dispensing element, which during movement thereof applies adhesive to the tail end;
- said adhesive dispensing element being equipped with an oscillatory movement between a position of immersion in a container of liquid adhesive and a position of adhesive application on the tail end.
Dependencies are inferred from the claim text.