Method and apparatus of banded wrapping of a palletized load

B - Operations – Transporting – 65 – B

Patent

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Details

B65B 11/00 (2006.01) B65B 11/04 (2006.01) B65B 41/12 (2006.01)

Patent

CA 2130494

A wrapping machine for wrapping a palletized load is provided with a film carriage having a spool of film. A means for unwinding the film from the spool from an upstream winding position to a downstream position in accordance with a selected path where it is applied to the load is also provided. Prestretching rollers for prestretching the film before it is applied to the load are contained on the film carriage. Cutting blades are used to pierce the film, down-stream of the prestretching rollers, into longitudinally extending strips. The strips are then separated into longitudinally extending bands by a separating roller. The bands are applied to a load by the carriage which slidably moves up and down along a support column in combination with a turntable upon which the load rotates.

Une machine d'emballage pour emballer une charge palettisée est équipée d'un chariot à pellicule ayant une bobine de pellicule. Il y a aussi un moyen pour dérouler la pellicule de la bobine d'une position amont à une position aval conformément à un parcours choisi où elle est appliquée sur la charge. Des rouleaux de préétirage pour préétirer la pellicule avant qu'elle ne soit appliquée sur la charge sont retenus sur le chariot à pellicule. Des lames de coupe sont utilisées pour percer la pellicule, en aval des rouleaux de préétirage, en bandes s'étendant longitudinalement. Ces bandes sont ensuites séparées longitudinalement par un rouleau séparateur. Les bandes sont appliquées sur une charge par le chariot qui coulisse verticalement le long d'une colonne d'appui en combinaison avec une table rotative sur laquelle tourne la charge.

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