Method and apparatus for automated wrapping
View Patent ↗A method and apparatus are provided for the automated wrapping of a bundle with a resilient stretchable film. The method comprises the steps of (i) unrolling a desired length of the film from a roll. The film has a first panel overlapping a second panel. The panels are interconnected at a sealed first end. (ii) Sealing a second end of the panels to bond them together by a second seal at the desired length. (iii) Cutting the film along the second seal to form a tube. (iv) Separating the first panel of the tube from the second panel by grasping film edges of each of the panels, whereby the tube may be opened. (v) Loading the tube in an opened position on an expandable frame, whereby at least a portion of the tube is accumulated in a folded condition on the expandable frame. (vi) Stretching the tube by expanding the expandable frame. (vii) Covering the bundle with the tube, by displacing the expandable frame towards the bundle, whereby the stretched tube is gradually released therefrom onto the bundle in a stretched resilient condition.
1. A method for automated wrapping of a bundle with a resilient stretchable film, comprising the steps of:
(i) unrolling a desired length of said film from a roll said film having a first panel overlapping a second panel, said panels being interconnected at a sealed first end;
(ii) sealing a second end of said panels to bond them together bya second seal at said desired length;
(iii) cutting said film along said second seal to form a tube;
(iv) separating said first panel of maid tube from said second panel by grasping a portion of each said panels, whereby said tube may be opened;
(v) loading said tube in an opened position on an expandable frame, whereby at least a portion of said tube is accumulated in a folded condition on said expandable frame;
(vi) stretching said tube by expanding said expandable frame; and
(vii) covering the bundle with said tube, by displacing said expandable frame towards the bundle, whereby said stretched tube is gradually released therefrom onto said bundle in a stretched resilient condition.
2. The method according to claim 1 , wherein said tube has a closed end, thereby forming a bag.
3. The method according to claim 1 , wherein an edge of said first panel projects over an edge of said second panel for facilitating the grasping by said first and second jaw means.