Film folding device
AssigneeToyo Shokuhin Kikai Kabushiki Kaisha
InventorHiromichi Shingo
Life of this patent
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Abstract
Film running one direction is folded along a longitudinal folding line by a folding plate and folding blade. The folding plate has a front edge and an inclined edge extending in the lateral direction against the film feeding direction, the folding blade extending in an oblique direction against the film feeding direction from the apex point of said edges of the folding plate for folding the outer part of a film against the reverse side of the film. The edges of the folding plate receives the tensile force of the film along the whole width so as to avoid any concentration of tensile force.
Claims7
A film folding device for folding the film having an inner and outer surface comprising:
- film feed means for feeding said film in a predetermined direction to a film guide means;
- folding plate means for engaging and guiding the inner surface of said film and having a front edge extending traversely to the direction said film is being fed and an inclined edge extending in a direction oblique to said film feed direction, said front edge and inclined edge intersecting at an apex point and abutting the inner surface of said film in the direction being fed, separate film folding blade means for engaging and guiding the outer surface of said film and extending in a second direction oblique to said film feed direction and having an edge abutting the outer surface of said film adjacent to and spaced from said apex point whereby said film passes between the folding plate means and folding blade means and is folded along a fold line passing across said apex point with the inner surface of said film being inside.
Dependencies are inferred from the claim text.