Patent ID: 7040076
Filing Date: 2006-05-09
Classification: B65B

Abstract:
1. A method for packaging an object with a hose-shaped stretch foil having laterally extending folds guided axially with respect to the foil and along a length of the object, said method including the steps of: forming either a foil hood sized to the length of said object to be packed or a band stock foil hose; reefing said foil hood or band stock, respectively, on several gripper devices movable in essentially a horizontal direction and being engaged with reefing devices, of a lifting frame movable in essentially a vertical direction, wherein said reefing devices each include a respective roll being rotatably engaged with each of said gripper devices; tentering said reefed foil hood or band stock, respectively, in essentially a horizontal direction by movement of said gripper devices and a first rotation of said reefing devices such that said tentered opening of said foil hood or band stock, respectively, is larger than the contour of said object to be packed and wherein said foil hood or band stock, respectively, is expanded in essentially a horizontal direction; pulling-over of said foil hood or band stock, respectively, over said object by the essentially vertical movement of said lifting frame, wherein said foil hood or band stock, respectively, is pulled-off from said gripper devices and is expanded in essentially a vertical direction; controlling the tension of said foil hood or band stock, respectively, during tentering in essentially a horizontal direction above the upper side of said object by controlled rolling off of the foil hood or band stock from said gripper devices and said reefing devices by rotating the rolls of said reefing devices in a direction opposite to the first rotation direction of the reefing devices utilized during said reefing step.