Method for binding a bundle of leaves, a bundle of leaves, method and device for forming such a bundle of leaves
AssigneeUnibind Limited
InventorGuido Peleman
Life of this patent
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Abstract
Method for binding a bundle (5) of leaves (1) in a binding back (7), whereby the bundle (5) is placed in the binding back (7) with an edge (2) of the leaves (1) and fastened therein, characterised in that for the binding use is made of a bundle (5) of leaves (1) of which a strip (4) of each of the leaves (1) has been separately double folded beforehand along the same line to form a fold line (3) that extends parallel to and at a distance (A) from the aforementioned edge (2).
Claims1
A method for forming a bundle (5) of leaves (1), characterised in that each leaf (1) of the bundle (5) is separately double folded by applying the following steps:
- clamping of a leaf (1) to be folded between two plates (18) except for a strip (4) with a width (A) that protrudes between the plates (18), a partial folding of the protruding strip (4) being in a direction (Y-Y′) perpendicular to a plane of the leaf (1);
- further folding of the strip (4) by any of pushing the plates (18) with the partially folded strip (4) into the wedge-shaped groove (22), by pushing the plates (18) with the partially folded strip (4) between two rollers of the wedge-shaped groove (22) and with sprung or fixed suspension, and moving a profiled element (21) with the wedge-shaped groove (22) over the edge (19) of the plates (18),
- moving the wedge-shaped groove (22) and the plates (18) with the folded strip (4) away from one another;
- folding back the folded strip (4) up to the plane of the leaf (1) and further up to a partially folded position of the strip (4) on the opposite side of the plates (18);
- and
- further folding of the strip (4), by any of pushing the plates (18) with the partially folded strip (4) into the funnel-shaped groove (22), pushing the plates (18) with the partially folded strip (4) between two rollers of the wedge-shaped groove (22) and with sprung or fixed suspension, and moving the profiled element (21) with the wedge-shaped groove (22) over the edge (19) of the plates (18), and then withdrawing and folding the folded strip (4) back into the plane of the leaf (1).
Dependencies are inferred from the claim text.