METHOD AND MACHINE FOR BANDING A PALLETIZED LOAD

摘要

A machine for helically banding the vertical side faces of a palletized load with a band of plastic film whose width is a fraction of the height of the load. The machine comprises a stand and a table which supports the load in a fixed position during the banding of the load and with which supply means and removal means for the load may be combined. A moveable carriage supports a reel of film having an axis with a generally vertical direction. Means are provided for deviating in its own plane the band of film originating from the reel and for vertically offsetting the downstream delivered section of the band of film with respect to the reel. The means are on the one hand carried by the carriage at least substantially opposite the reel and on the other hand may be deformed during the banding operation between two extreme configurations corresponding to two separate extreme states. An active one in which they ensure the deviation and the maximum vertical offsetting and an inactive one in which the deviation and offset are zero or minimal. Means are provided for controlling and driving the deviating and vertical-offsetting means in order to switch them from their active state to their inactive state, or vice versa such that in a certain relative situation of the carriage during the banding operation, operation of the control and drive means results in the downstream delivered section of the band of film applied to the load being offset relatively in the vertical direction with respect to the reel of film.