Device and system for arranging folds in foil material

A system for arranging at least one additional fold in a strip of flattened tubular shrink foil material, the system comprising:

• (a) a guiding element having a front side and a back side and configured to guide therealong the strip of flattened tubular shrink foil material in an axial direction along the guiding element, wherein the guiding element comprises:
• (i) an upstream guiding element formed by a first flat plate extending in a first plane,
• (ii) a downstream guiding element formed by a second flat plate extending in a second plane rotated with respect to the first plane,
• (iii) a generally wedge-shaped intermediate guiding element connected to or integrally formed with the upstream and downstream guiding elements and shaped so as to smoothly guide the flattened tubular shrink foil material moving over the first flat plate towards the second flat plate,
• (iv) a first set of positioning rollers provided in a transversal groove located in an outer surface of the intermediate guiding element, and
• (v) a second set of positioning provided in an outer surface of the downstream guiding element;
• (b) at least one pair of pressure rollers arranged on either side of the downstream guiding element and configured to press at least one additional fold into the tubular shrink foil material;
• and
• (c) a drive unit to move the strip in an axial direction along the guiding element, wherein the drive unit comprises a frame and a roller support rotatably attached to the frame such that the orientation of the roller support is configured to be set relative to the frame depending on the orientation of the downstream guiding element, wherein the roller support comprises a first support member and a second support member pivotable relative to the first support member between an open position and a closed position, wherein the guiding element is positioned between the first support member and the second support member such that the guiding element is removable from the frame when the first support member and the second support member are in the open position.