B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
B65H 18/16 (2006.01) B65H 19/22 (2006.01) B65H 19/26 (2006.01) B65H 19/28 (2006.01)
Patent
CA 2073607
The method and machine is shown for the production of rolls or logs of web material. The web material is fed through a nip (5) formed between two winding rollers (1, 3) and wound up around a core to form a roll or log (R) within a winding space defined by said two winding rollers and by a third roller. At the end of the winding of a log, the third roller (7) is temporarily accelerated to locally increase the speed of the web and to put the web material in tension between the third roller and one of said winding rollers. The tearing of the web material takes place because at that moment the incoming web is pinched between a new core and the one winding roller on which the material is driven out.
éthode et machine pour la production de rouleaux de matériau en feuille continue. La feuille continue passe dans une zone de contact (5) entre deux cylindres enrouleurs (1, 3) et s'enroule autour d'un mandrin pour former un rouleau (R) dans un espace d'enroulage délimité par les deux cylindres enrouleurs et un troisième cylindre. Quand s'achève l'enroulage d'un rouleau, la rotation du troisième cylindre (7) est temporairement accélérée en vue d'augmenter la vitesse de défilement de la feuille continue et mettre le matériau en tension entre le troisième cylindre et l'un desdits cylindres enrouleurs. La rupture du matériau en feuille continue se produit parce que, à ce moment, la feuille qui arrive est coincée entre un nouveau mandrin et le cylindre enrouleur dont le matériau se déroule.
Fabio Perini S.p.a.
Ridout & Maybee Llp
LandOfFree
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