An apparatus for unwinding rolls of web material

B - Operations – Transporting – 65 – H

Patent

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Details

B65H 23/182 (2006.01) B65H 19/18 (2006.01)

Patent

CA 2503441

A method and apparatus for unwinding a vertically oriented roll (10) of web material (11) is disclosed. The roll (10) comprises a lower surface, an upper surface and a circumferential surface. The apparatus comprises: at least one drive element adapted to rotate the vertically oriented roll (10), a sensor adapted to measure a tension of the web, and a controller adapted to adjust a speed of the web according to the tension of the web. The method comprises steps of rotating the roll, determining a desired web tension, and adjusting the speed of the roll according to the desired web tension.

L'invention concerne un procédé et un appareil destinés à dérouler un rouleau à orientation verticale d'une matière en bande. Ce rouleau comprend une surface inférieure, une surface supérieure et une surface circonférentielle. Ledit appareil comprend au moins un élément d'entraînement conçu pour faire tourner le rouleau à orientation verticale, un détecteur servant à mesurer une tension de la bande, ainsi qu'un dispositif de commande destiné à régler la vitesse de la bande selon la tension de cette bande. Le procédé consiste à faire tourner le rouleau, à déterminer une tension de bande souhaitée et à régler la vitesse dudit rouleau selon la tension de bande souhaitée.

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