Back to results
US 8,475,349 B2Granted
Method for folding film edges
AssigneeParagon Films, Inc.
InventorsShaun Eugene Pirtle, Khurrum Shamsi, Robert Earl Cochlin
Life of this patent
Estimating the term…
Abstract
Pre-stretched films may be used to increase the rate at which loads can be wrapped and to minimize the exertion required when using traditional handheld film. However, the edges of pre-stretched films are easily damaged, which may result in tearing or failure of the film during use. The present disclosure describes devices, systems, and methods for folding the edges of the film, resulting in a film that is less susceptible to damage and easier to use.
Claims11
A method for producing folded edges in a film in-process, the method comprising the steps of
- providing a film section with edges created by longitudinal slits;
- providing a first idler roll;
- providing a second idler roll separated from the first idler roll by a first distance;
- providing a plurality of folding guides that are positioned between the first idler roll and the second idler roll;
- moving the film section over the first idler roll;
- moving the film section past the folding guides, wherein each folding guide separates adjacent sections of film and induces two folds by causing an edge of each section of film to turn under 180° and spontaneously cling to a bottom surface of the film;
- and
- moving the film section over the second idler roll.
5 more elements
Dependencies are inferred from the claim text.