Patent ID: 6305145
Filing Date: 2001-10-23
Classification: B65B

Abstract:
Wrapping apparatus for winding a wrapping foil web (F), fed from a replaceable foil roll (5), around an object (1) to be packaged, said wrapping apparatus comprising an endless track and a foil dispenser (2) arranged to circulate along the endless track (3) around the object to be packaged, said foil dispenser (2) includinga frame (4) for detachably receiving the replaceable foil roll (5),supporting elements (6) for supporting the foil roll on the frame, anda tensioning arrangement mounted on the frame for maintaining a predetermined foil tension of the foil web, said tensioning arrangement including a sensor (8) for detecting foil tension of the foil web, a control system receiving output from the sensor, and an electric motor (9) controlled by the control system for driving the foil roll (5), wherein the torque, speed of rotation and direction of rotation of said electric motor are controlled by the control system on the basis of the foil tension detected by the sensor.