Wrapping apparatus
AssigneeOy M. Haloila AB
InventorYrjö Suolahti
Life of this patent
Estimating the term…
Abstract
Wrapping apparatus for winding a wrapping foil web (F) around an object (1) includes a foil dispenser (2) arranged to circulate along a ring-like endless track (3) around the object to be packaged. The foil dispenser (2) comprises a frame (4), a detachable and replaceable foil roll (5) mounted on the frame, supporting elements (6) for supporting the foil roll on the frame, and tensioning arrangements (7) for braking foil delivery from the roll and maintaining a predetermined foil tension. The tensioning arrangements (7) comprise a sensor (8) for detecting foil web tension, and an electric motor (9) for driving the foil roll (5). The torque, speed of rotation and direction of rotation of the electric motor is controlled on the basis of foil tension as detected by the sensor.
Claims14
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) including
- a frame (4) for detachably receiving the replaceable foil roll (5),
- supporting elements (6) for supporting the foil roll on the frame, and
- a 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.
Dependencies are inferred from the claim text.